US20030092988A1 - Staging medical treatment using ultrasound - Google Patents

Abstract

A method for medical treatment of a patient. An ultrasound imaging transducer assembly is obtained. The assembly is inserted into a gastrointestinal area of the patient. The assembly is guided within the gastrointestinal area. Patient tissue in the gastrointestinal area is identified for medical treatment. The medical treatment is staged from ultrasound imaging using the assembly. The patient tissue is medically treated according to the staging. In one example, the medical treatment is not ultrasound medical treatment. In another example, the ultrasound imaging transducer assembly is an ultrasound imaging and medical-treatment transducer assembly which is used for the medical treatment.

Description

• The present application claims priority of U.S. Provisional Application Serial No. 60/294,135 filed May 29, 2001, the entire disclosure of which is incorporated herein by reference.[0001]
FIELD OF THE INVENTION
• The present invention relates generally to ultrasound, and more particularly to an ultrasound medical system and/or to an ultrasound medical method.[0002]
BACKGROUND OF THE INVENTION
• Known ultrasound medical systems and methods include using ultrasound imaging of patients to identify patient tissue for medical treatment and include using ultrasound to medically destroy identified patient tissue by heating the tissue. Imaging is done at lower power and medical treatment is done at higher power. Low power imaging ultrasound will not medically affect patient tissue. High power medical-treatment ultrasound, when focused at a focal zone a distance away from the ultrasound source, will substantially medically affect patient tissue in the focal zone. However, focused medical-treatment ultrasound will not substantially medically affect patient tissue outside the focal zone such as patient tissue located between the source and the focal zone.[0003]
• In one known example, a transducer assembly includes a single ultrasound transducer having a single transducer element, or an array of transducer elements acting together, to ultrasonically image the patient and to ultrasonically ablate identified patient tissue. It is known to convert ultrasound imaging data into temperature imaging data for ultrasound-treated patient tissue to monitor the ultrasound treatment. A known transducer element includes a transducer element having a concave shape or an acoustic lens to focus ultrasound energy. A known array of transducer elements includes a planar, concave, or convex array of transducer elements to focus ultrasound energy. A known array of transducer elements includes an array whose transducer elements are electronically or mechanically controlled together to steer and focus the ultrasound emitted by the array to a focal zone (which may be large or which may be as small as, for example, a grain of rice) to provide three-dimensional medical ultrasound treatment of patient tissue. In some applications, the transducer is placed on the surface of patient tissue for ultrasound imaging and/or ultrasound medical treatment of areas within the patient tissue. In other applications, the transducer is surrounded with a balloon which is expanded to contact the surface of patient tissue by filling with a fluid such as a saline solution to provide acoustic coupling between the transducer and the patient tissue.[0004]
• Known ultrasound medical systems and methods include deploying an end effector having an ultrasound transducer outside the body to break up kidney stones inside the body, endoscopically inserting an end effector having an ultrasound transducer in the colon to medically destroy prostate cancer, laparoscopically inserting an end effector having an ultrasound transducer in the abdominal cavity to medically destroy a cancerous liver tumor, intravenously inserting a catheter end effector having an ultrasound transducer into a vein in the arm and moving the catheter to the heart to medically destroy diseased heart tissue, and interstitially inserting a needle end effector having an ultrasound transducer needle into the tongue to medically destroy tissue to reduce tongue volume to reduce snoring. Known methods for guiding an end effector within a patient include guiding the end effector from x-rays, from MRI images, and from ultrasound images obtained using the ultrasound transducer. Known ultrasound imaging includes Doppler ultrasound imaging to detect blood flow, and a proposed known use of ultrasound includes using an ultrasound transducer outside the body to stop internal bleeding (by sealing ruptured blood vessels) of a patient brought to an emergency room of a hospital.[0005]
• A Mammotome® Breast Biopsy System manufactured by Ethicon Endo-Surgery, Inc. (a Johnson & Johnson Company) inserts a tube into breast tissue, wherein the tube contains an end effector having a biopsy cutting tool. A known electromagnetic transponder and three-receiver system for calculating the position of the transponder and for guiding the transponder (which is attached to a heart catheter for monitoring the heart) inside a patient is the CARTO™ EP Navigation System used with a NAVI-STAR® catheter manufactured by Biosense Webster (a Johnson & Johnson Company). Further, it is known that changes in patient tissue because of medical treatment of patient tissue, such as ultrasound medical treatment, affect the amplitude and/or phase of ultrasound imaging signals.[0006]
• What is needed is an improved ultrasound medical system and/or an improved ultrasound medical method. This invention addresses those needs lacking in an ultrasonic medical system and/or an ultrasonic medical method.[0007]
SUMMARY OF THE INVENTION
• One method of the invention is for medical treatment of a patient and includes steps a) through f). Step a) includes obtaining an ultrasound imaging transducer assembly. Step b) includes inserting the transducer assembly into a gastrointestinal area of the patient. Step c) includes guiding the transducer assembly within the gastrointestinal area. Step d) includes identifying patient tissue in the gastrointestinal area for medical treatment. Step e) includes staging the medical treatment from ultrasound imaging using the transducer assembly. Step f) includes medically treating the patient tissue according to the staging of step e). In one example, the medical treatment is not ultrasound medical treatment. In another example, the ultrasound imaging transducer assembly is an ultrasound imaging and medical-treatment transducer assembly which is used for the medical treatment.[0008]
• The present invention has, without limitation, application in conventional endoscopic and open surgical instrumentation as well as application in robotic-assisted surgery.[0009]
BRIEF DESCRIPTION OF THE DRAWINGS
• FIG. 1 is a perspective view of a first embodiment of the present invention showing an ultrasound medical treatment system which includes a tissue-retaining device;[0010]
• FIG. 2 is an enlarged view of the end effector of the ultrasound medical treatment system of FIG. 1;[0011]
• FIG. 3 is a view of the end effector of FIG. 2 retaining an intervertebral disk of a patient;[0012]
• FIG. 4 is a perspective view of a first alternate end effector which can be used in the ultrasound medical treatment system of FIG. 1;[0013]
• FIG. 5 is a perspective view of a second alternate end effector which can be used in the ultrasound medical treatment system of FIG. 1;[0014]
• FIG. 6 is a perspective view of a third alternate end effector which can be used in the ultrasound medical treatment system of FIG. 1;[0015]
• FIG. 7 is a side elevational view of a second embodiment of the present invention showing another ultrasound medical treatment system which includes a tissue-retaining device;[0016]
• FIG. 8 is an enlarged, partially-cutaway view of the end effector of the ultrasound medical treatment system of FIG. 7;[0017]
• FIG. 9 is a perspective view of a third embodiment of the present invention showing an ultrasound medical system which includes flexible fingers, wherein each finger includes an ultrasound transducer;[0018]
• FIG. 10 is an enlarged view of the tube and the flexible fingers of the ultrasound medical system of FIG. 9 showing the flexible fingers in a deployed fan-like state;[0019]
• FIG. 11 is a view of the flexible fingers of FIG. 10 shown in a stowed state;[0020]
• FIG. 12 is a perspective view of an alternate flexible finger arrangement which can be used in the ultrasound medical system of FIG. 9, showing the flexible fingers in a deployed claw-like state surrounding patient tissue;[0021]
• FIG. 13 is a perspective view of a fourth embodiment of the present invention showing an ultrasound medical system which includes an ultrasound transducer assembly which includes at least two ultrasound transducers;[0022]
• FIG. 14 is an enlarged view of the ultrasound transducer assembly of the ultrasound medical system of FIG. 13;[0023]
• FIG. 15 is a cross-sectional view of the transducer assembly of FIG. 14;[0024]
• FIG. 16 is a cross-sectional view of a first alternate transducer arrangement which can be used in place of the arrangement of FIG. 15;[0025]
• FIG. 17 is a cross-sectional view of a second alternate transducer arrangement which can be used in place of the arrangement of FIG. 15;[0026]
• FIG. 18 is a perspective view of a fifth embodiment of the present invention showing an ultrasound medical treatment system which includes a cutting tool and an ultrasound medical-treatment transducer assembly;[0027]
• FIG. 19 is an enlarged, cross-sectional view of the tube of FIG. 18 showing a cutting tool that has been introduced into the lumen of the tube;[0028]
• FIG. 20 is an enlarged, cross-sectional view of the tube of FIG. 18 showing an ultrasound medical-treatment transducer assembly that has been introduced into the lumen of the tube;[0029]
• FIG. 21 is a block diagram of an eighth method of the present invention which includes ultrasound staging of medical treatment of patient tissue in the gastrointestinal area;[0030]
• FIG. 22 is a block diagram of an eleventh method of the present invention which includes ultrasound medical treatment of a lesion on or in the lung of a patient;[0031]
• FIG. 23 is a block diagram of a thirteenth method of the present invention which includes ultrasound medical treatment of a blood vessel to stop the supply of blood to a lesion from the blood vessel;[0032]
• FIG. 24 is a perspective view of a sixth embodiment of the present invention showing a portion of an ultrasound medical treatment system which includes receivers for locating the position of the transducer assembly of the system; FIG. 25 is a perspective view of a seventh embodiment of the present invention showing a portion of another ultrasound medical treatment system which includes receivers for locating the position of the transponder of the system;[0033]
• FIG. 26 is a block diagram of a seventeenth method of the present invention which includes aiming the transducer assembly; and[0034]
• FIG. 27 is a block diagram of a twentieth method of the present invention which includes creating an image after starting medical treatment using an imaging ultrasound wave before medical treatment and an imaging ultrasound wave after starting medical treatment.[0035]
DETAILED DESCRIPTION OF THE INVENTION
• Before explaining the present invention in detail, it should be noted that the invention is not limited in its application or use to the details of construction and arrangement of parts illustrated in the accompanying drawings and description. The illustrative embodiments of the invention may be implemented or incorporated in other embodiments, variations and modifications, and may be practiced or carried out in various ways. Furthermore, unless otherwise indicated, the terms and expressions employed herein have been chosen for the purpose of describing the illustrative embodiments of the present invention for the convenience of the reader and are not for the purpose of limiting the invention.[0036]
• It is understood that any one or more of the following-described embodiments, expressions of embodiments, examples, methods, etc. can be combined with any one or more of the other following-described embodiments, expressions of embodiments, examples, methods, etc. For example, and without limitation, any of the end effectors can be used in any of the methods, any of the transducer arrangements can be used in any of the end effectors, and any appropriate methods can be combined such as combining the seventeenth and twentieth methods, etc.[0037]
Ultrasound Medical Treatment Using Tissue-Retaining Devices
• Tissue-Retaining System for Ultrasound Medical Treatment[0038]
• Referring now to the drawings, FIGS.[0039]1-3 illustrate a first embodiment of the present invention. A first expression of the first embodiment of the present invention is for an ultrasoundmedical treatment system10 including anend effector12 insertable into apatient14. Theend effector12 includes a tissue-retainingdevice16. The tissue-retainingdevice16 includes a first tissue-retainingmember18 having an (i.e., at least one) ultrasound medical-treatment transducer20 (also called “transducer20”) and includes a second tissue-retainingmember22. The first and second tissue-retainingmembers18 and22 are operatively connected together to retainpatient tissue24 between the first and second tissue-retainingmembers18 and22 and to releasepatient tissue24 so retained.
• It is noted that an ultrasound medical-treatment transducer is an ultrasound transducer adapted at least for ultrasound medical treatment of a patient such as, but not limited to, a human patient. An ultrasound medical-treatment transducer includes either a single ultrasound medical-treatment transducer element or an array of ultrasound medical-treatment transducer elements, as is known to those skilled in the art. An ultrasound medical-treatment transducer may or may not also be adapted for ultrasound imaging of a patient. Likewise, an ultrasound imaging transducer is an ultrasound transducer adapted at least for ultrasound imaging of a patient and may or may not also be adapted for ultrasound medical-treatment of a patient.[0040]
• Advantages of retaining patient tissue between two tissue-retaining members during ultrasound medical treatment by one of the tissue-retaining members include having a single instrument which ultrasonically medically treats patient tissue and at the same time immobilizes patient tissue against undesired movement during the treatment. It is also noted that in one application the tissue-retaining device is a clamp which retains and holds tissue and that in another application the tissue-retaining device retains tissue against movement, but does not hold tissue, and therefore is not a clamp.[0041]
• In one variation, not shown, the second tissue-retaining[0042]member22 has an ultrasound imaging and/or medical treatment transducer. In the same or a different variation, not shown, the tissue-retainingdevice16 has at least one additional tissue-retaining member. Mechanisms, not shown, for remotely moving two (or more) members toward and away from each other are within the ordinary level of skill of the artisan and include, without limitation, the use of pivotal member attachments and the use of cables or motors. In the same or a different variation, the retainedpatient tissue24 is retained between the ultrasound medical-treatment transducer20 and the second tissue-retainingmember22. In the same or a different variation, the ultrasound medical-treatment transducer20 focuses ultrasound energy, such focusing being known to those skilled in the art. In the same or a different variation, not shown, the second tissue-retainingmember22 is substantially ultrasonically non-reflective.
• A second expression of the first embodiment of the present invention is for an ultrasound[0043]medical treatment system10 including anend effector12 insertable into apatient14. Theend effector12 includes a tissue-retainingdevice16. The tissue-retainingdevice16 includes a first tissue-retainingmember18 having an (i.e., at least one) ultrasound imaging and medical-treatment transducer26 (also called “transducer26”) and includes a second tissue-retainingmember22. The first and second tissue-retainingmembers18 and22 are operatively connected together to retainpatient tissue24 between the first and second tissue-retainingmembers18 and22 and to releasepatient tissue24 so retained.
• It is noted that an ultrasound imaging and medical-treatment transducer is an ultrasound transducer adapted at least for both ultrasound imaging and ultrasound medical treatment of a patient. An ultrasound imaging and medical-treatment transducer includes either a single ultrasound imaging and medical-treatment transducer element or an array of ultrasound medical transducer elements (including an array having at least one separate element for imaging and at least one separate element for medical treatment or an array having at least two elements each adapted for both imaging and medical treatment), as is known to those skilled in the art. In one variation, the retained[0044]patient tissue24 is retained between the imaging and medical-treatment transducer26 and the second tissue-retainingmember22. In the same or a different variation, the ultrasound imaging and medical-treatment transducer26 focuses ultrasound energy. In the same or a different variation, not shown, the second tissue-retainingmember22 is substantially ultrasonically non-reflective.
• A third expression of the first embodiment shown in FIGS.[0045]1-3 is for an ultrasoundmedical treatment system10 including anend effector12 insertable into apatient14. Theend effector12 includes a tissue-retainingdevice16. The tissue-retainingdevice16 includes a first tissue-retainingmember18 having an (i.e., at least one) ultrasound medical-treatment transducer20 and includes a second tissue-retainingmember22 having an (i.e., at least one)ultrasound reflector28. The first and second tissue-retainingmembers18 and22 are operatively connected together to retainpatient tissue24 between the first and second tissue-retainingmembers18 and22 and to releasepatient tissue24 so retained.
• Advantages of retaining patient tissue between two tissue-retaining members during ultrasound medical treatment by an ultrasound medical-treatment transducer of a first tissue-retaining member and an ultrasound reflector of a second tissue-retaining member include having a single instrument which ultrasonically medically treats patient tissue by direct ultrasound, which enhances the ultrasound medical treatment by reflected ultrasound, and which at the same time immobilizes patient tissue against undesired movement during the treatment.[0046]
• It is noted that an[0047]ultrasound reflector28 is a material which reflects ultrasound at least to a degree that would substantially medically affect patient tissue over a treatment period by direct ultrasound which is being reflected back by the ultrasound reflector. Choices of ultrasound reflecting materials include, without limitation, acoustically-rigid materials such as stainless steel (which reflects about 100%) and aluminum (which reflects about 80%) and acoustically-softer materials such as corporene (which reflects about 90%). An ultrasound reflecting material is contrasted with an ultrasound absorbing material such as, without limitation, rubber or plastic. In one variation, the retainedpatient tissue24 is retained between the ultrasound medical-treatment transducer20 and theultrasound reflector28. In the same or a different variation, the ultrasound medical-treatment transducer20 and theultrasound reflector28 each focus ultrasound energy, such ultrasound reflector focusing being accomplished by the shape of, or by shaping, the reflector surface as is within the ordinary level of skill of the artisan.
• A fourth expression of the first embodiment shown in FIGS.[0048]1-3 is for an ultrasoundmedical treatment system10 including anend effector12 insertable into apatient14. Theend effector12 includes a tissue-retainingdevice16. The tissue-retainingdevice16 includes a first tissue-retainingmember18 having an (i.e., at least one) ultrasound imaging and medical-treatment transducer26 and includes a second tissue-retainingmember22 having an (i.e., at least one)ultrasound reflector28. The first and second tissue-retainingmembers18 and22 are operatively connected together to retainpatient tissue24 between the first and second tissue-retainingmembers18 and22 and to releasepatient tissue24 so retained. In one variation, the retainedpatient tissue24 is retained between the ultrasound imaging and medical-treatment transducer26 and theultrasound reflector28. In the same or a different variation, the ultrasound imaging and medical-treatment transducer26 and theultrasound reflector28 each focus ultrasound energy.
• In one example of the previously-described third and fourth expressions of the first embodiment, the[0049]ultrasound reflector28 is disposed to receive ultrasound energy from thetransducer20 and26 and is oriented to reflect the received ultrasound energy back intopatient tissue24 retained by the tissue-retainingdevice16. In the same or a different example, theultrasound reflector28 is oriented to reflect the received ultrasound energy away from thetransducer20 and26 when thepatient tissue14 is retained by the tissue-retainingdevice16. An advantage of this arrangement is that it avoids damage to the transducer from the reflected ultrasound. In the same or a different example, one of the first and second tissue-retainingmembers18 and22 is controllably orientatable relative to the other of the first and second tissue-retainingmembers18 and22 such as, without limitation, by being orientatable along the double-headed arrows shown in FIG. 2. In one modification, the second tissue-retainingmember22 is controllably orientatable relative to the first tissue-retainingmember18 to reflect the received ultrasound energy back along different directions. A firstalternate end effector30 is shown in FIG. 4 wherein the second tissue-retainingmember32 is controllably orientatable relative to the first tissue-retainingmember34 as shown by the double-headed arrows in FIG. 4. Mechanisms, not shown, for remotely controlling the orientation of one member relative to another member are within the ordinary level of skill of the artisan and include, without limitation, the use of pivotal member attachments and the use of cables or motors. In one application, thetransducer20 and26 generates wide-focused ultrasound (shown by the two single-headed arrows coming from the first tissue-retainingmember18 in FIG. 3) and theultrasound reflector28 generates narrow-focused ultrasound (shown by the two single-headed arrows coming from the second tissue-retainingmember22 in FIG. 3).
• In one example of the previously-described first through fourth expressions of the first embodiment, the[0050]end effector12 is an open-surgery end effector, an endoscopic end effector, a laparoscopic end effector (as shown in FIG. 1), a catheter end effector (such as, but not limited to, an intravascular catheter end effector), or a needle end effector, as can be appreciated by those skilled in the art. In one application, theend effector12 is used to retain a blood vessel and then to ultrasonically treat the blood vessel to seal the blood vessel stopping the flow of blood in the retained blood vessel. In another application, theend effector12 is used to retain patient tissue and then to ultrasonically ablate at least a portion of the retained patient tissue.
• In one design of the previously-described first through fourth expressions of the first embodiment, the[0051]end effector12 has alongitudinal axis35, and one of the first and second tissue-retainingmembers18 and22 at all times faces along a direction which is substantially perpendicular to thelongitudinal axis35. If the one tissue-retaining member were planar, this means that the longitudinal axis would be substantially parallel to the plane of the one tissue-retaining member. In one enablement, the one tissue-retaining member is the first tissue-retainingmember18. A secondalternate end effector36 has first and second tissue-retainingmembers38 and40 which are hinged together to relatively move as indicated by the double-headed arrow and which are shown in a partially open configuration in FIG. 5. The secondalternate end effector36 has alongitudinal axis42, and one of the first and second tissue-retainingmembers38 and40 at all times faces along a direction which is substantially parallel to thelongitudinal axis42. If the one tissue-retaining member were planar, this means that the longitudinal axis would be substantially perpendicular to the plane of the one tissue-retaining member. In one enablement, the one tissue-retaining member is the first tissue-retainingmember38. A thirdalternate end effector37 having first and second tissue-retainingmembers39 and41 with one member longitudinally movable with respect to the other member (as indicated by the double-headed arrow) is shown in FIG. 6. The thirdalternate end effector37 has alongitudinal axis43, and one of the first and second tissue-retainingmembers39 and41 at all times faces along a direction which is substantially parallel to thelongitudinal axis43. In one enablement, the one tissue-retaining member is the first tissue-retainingmember39.
• In one enablement, as shown in FIG. 1, the ultrasound[0052]medical treatment system10 also includes ahandpiece44 operatively connected to theend effector12 and to anultrasound controller46 operatively connected to a foot-pedal power switch47, as can be appreciated by those skilled in the art.
• A first method of the invention is for ultrasound medical treatment of a patient and uses the ultrasound medical treatment system as previously described in the first, second, third or fourth expression of the first embodiment with or without the previously-described variations, etc. thereof. The first method includes steps a) through e). Step a) includes endoscopically inserting the end effector into an ear, nose, or throat of the patient. Step b) includes guiding the end effector in the patient. Step c) includes identifying patient tissue for medical treatment such as optionally at least in part from ultrasound imaging using the transducer. Other ways of identifying patient tissue for medical treatment include, without limitation, using x-rays and/or MRI imaging, as are known to the artisan. Step d) includes retaining the identified patient tissue using the tissue-retaining device. Step e) includes medically treating the retained patient tissue with ultrasound using the transducer or using the transducer and the ultrasound reflector. In one implementation, one tissue-retaining member at all times faces along a direction which is substantially parallel to the longitudinal axis of the end effector (as seen in FIGS. 5 and 6).[0053]
• A second method of the invention is for ultrasound medical treatment of a patient and uses the ultrasound medical treatment system as previously described in the first, second, third or fourth expression of the first embodiment with or without the previously-described variations, etc. thereof. The second method includes steps a) through c). Step a) includes inserting the[0054]end effector12 into the patient. Step b) includes retaining an intervertebral disk48 (see FIG. 3) of the patient with the tissue-retaining device, wherein the intervertebral disk48 includes tissue. Step c) includes medically treating the retained intervertebral disk48 with ultrasound to shrink the tissue using the transducer or using the transducer and the ultrasound reflector. In one implementation, one tissue-retaining member at all times faces along a direction which is substantially perpendicular to the longitudinal axis of the end effector (as seen in FIGS. 2 and 4). In one application of the second method of the invention, the intervertebral disk48 includes connective and nerve tissue.
• A third method of the invention is for ultrasound medical treatment of a patient and uses the ultrasound medical treatment system as previously described in the first, second, third or fourth expression of the first embodiment with or without the previously-described variations, etc. thereof. The third method includes steps a) through c). Step a) includes inserting the end effector into the patient. Step b) includes retaining a joint of the patient with the tissue-retaining device, wherein the joint includes tissue. Step c) includes medically treating the retained joint with ultrasound to shrink the tissue using the transducer or using the transducer and the ultrasound reflector. In one implementation, one tissue-retaining member at all times faces along a direction which is substantially perpendicular to the longitudinal axis of the end effector (as seen in FIGS. 2 and 4). In one application of the third method of the invention, the joint includes connective and nerve tissue.[0055]
• As previously mentioned, one application of the ultrasound[0056]medical treatment system10 of the previously-described first through fourth expressions of the first embodiment uses the tissue-retaining device to retain a blood vessel and uses the transducer, or the transducer and the ultrasound reflector, to substantially stop the flow of blood within the blood vessel.
• Referring again to the drawings, FIGS.[0057]7-8 illustrate a second embodiment of the present invention which is an ultrasoundmedical treatment system50 including anend effector52 insertable into a patient. Theend effector52 includes a tissue-retainingdevice54. The tissue-retainingdevice54 includes a first tissue-retainingmember56 having an ultrasound imaging and medical-treatment transducer58 and includes a second tissue-retainingmember60 having anultrasound reflector62. The first and second tissue-retainingmembers56 and60 are operatively connected together to retain patient tissue between the first and second tissue-restraining members and to release patient tissue so retained. The first and second tissue-retainingmembers56 and60 always maintain a substantially parallel alignment.
• Advantages of having a substantially parallel alignment between the tissue-retaining members include, in one example, having the transducer and the ultrasound reflector maintain a substantially parallel alignment for improved reflected ultrasound medical treatment enhancement for any thickness of patient tissue retained by the tissue-retaining members.[0058]
• In one example of the second embodiment, the first tissue-retaining[0059]member56 is adistal end portion64 of afirst tube66. The ultrasoundmedical treatment system50 also includes asecond tube68, first andsecond link members70 and72, and acable74. Thesecond tube68 is oriented substantially parallel to thefirst tube66. The first andsecond link members70 and72 are pivotally attached to the second tissue-retainingmember60 and to thesecond tube68 at pivot points76-82 creating a hinged parallelogram defined by aproximal portion84 of the second tissue-retainingmember60, adistal portion86 of thesecond tube68, and the first andsecond link members70 and72. Theultrasound reflector62 is disposed at adistal portion88 of the second tissue-retainingmember60 and faces thetransducer58. Thecable74 is operatively connected to the hinged parallelogram to move the second tissue-retainingmember60 toward and away from the first tissue-retainingmember56.
• In one variation, the ultrasound[0060]medical treatment system50 also includes anouter tube90. Thecable74 and the first andsecond tubes66 and68 are disposed in theouter tube90. In one modification, the ultrasoundmedical treatment system50 also includes ahandpiece92. Thecable74 and the first, second, andouter tubes66,68 and90 are operatively connected to thehandpiece92. In one design, the orientation of thefirst tube66 about the longitudinal axis of thefirst tube66 is controlled by a step motor (not shown) disposed in, and actuated by, thehandpiece92. In the same or another design, thefirst tube66 is a hollow tube allowing for transducer wiring (not shown), and the second tube is a solid tube (not shown). Depending on use, thetubes66,68, and90 may be rigid or flexible which also is true for any tube arrangement (specifically disclosed as rigid or flexible, or not so specifically disclosed) of any end effector and for any end effector itself of any of the previous or following embodiments of the invention.
Ultrasound Medical Treatment Using Specific Transducer Arrangements
• Deployable Ultrasound Medical Transducers[0061]
• Referring to the drawings, FIGS.[0062]9-11 illustrate a third embodiment of the present invention. A first expression of the third embodiment of the present invention is for an ultrasoundmedical system94 including atube96 and a plurality of resilientlyflexible fingers98. Thetube96 has adistal end100 insertable into a patient and has alumen102 with adistal opening104. Thefingers98 are extendable out of thedistal opening104 of thelumen102 creating a deployed state (seen in FIG. 10) and which are at-least-partially retractable into thedistal opening104 of thelumen102 creating a stowed state (seen in FIG. 11). Eachfinger98 includes anultrasound transducer106. The distance between theultrasound transducers106 ofadjacent fingers98 is greater in the deployed state than in the stowed state. It is noted that an ultrasound medical system is a medical system which at least provides ultrasound imaging or ultrasound medical treatment of a patient.
• Advantages of the tube and extendable/retractable flexible-finger array arrangement include, when the transducers are ultrasound medical-treatment transducers having a common focal zone in the deployed state, providing faster medical treatment times by allowing for more transducer ultrasound-emitting surface area which can be simply stowed into a compact shape for transport within a patient to and from the site of patient tissue receiving ultrasound medical treatment.[0063]
• In one variation, the[0064]fingers98 are only partially retracted into thedistal opening104 of thelumen102 in the stowed state (as seen in FIG. 11). In another variation, not shown, thefingers98 are completely retracted into thedistal opening104 of thelumen102 in the stowed state. By thefingers98 being extendable out of thedistal opening104 of thelumen102 creating the deployed state and being at-least-partially retractable into thedistal opening104 of thelumen102 creating the stowed state means thefingers98 protrude more out of thedistal opening104 of thelumen102 in the extended state than (if at all) in the stowed state. Mechanisms, not shown, for remotely extending and retracting fingers in a tube include, without limitation, a common shaft attached to the proximal ends of the fingers, disposed in the lumen of the tube, and spring-biased to move forward upon squeezing of a handpiece and to return backward upon relaxing of the handpiece, as is within the ordinary level of skill of the artisan. In one modification, thedistal opening104 of thelumen102 coincides with thedistal end100 of thetube96. In another modification, not shown, the distal opening of the lumen is spaced apart from the distal end of the tube. In one implementation, thedistal opening104 of thelumen102 faces in the same direction as thedistal end100 of thetube96. Other implementations are left to the artisan, such as, without limitation, the distal opening of the lumen facing perpendicular to the distal end of the tube. In one example, at least one of thetransducers106 is an ultrasound imaging transducer. In the same or a different example, at least one of thetransducers106 is an ultrasound medical-treatment transducer. In the same or a different example, at least one of thetransducers106 is an ultrasound imaging and medical-treatment transducer.
• A second expression of the third embodiment is for an ultrasound[0065]medical treatment system108 including atube96 and including anend effector110 having a plurality offingers98. Thetube96 has adistal end100 insertable into a patient and has alumen102 with adistal opening104. Thefingers98 are extendable out of thedistal opening104 of thelumen102 creating a deployed state (seen in FIG. 10) and are at-least-partially retractable into thedistal opening104 of thelumen102 creating a stowed state (seen in FIG. 11). Eachfinger98 includes an ultrasound medical-treatment transducer112. The distance between the ultrasound medical-treatment transducers112 ofadjacent fingers98 is greater in the deployed state than in the stowed state.
• A third expression of the third embodiment is for an ultrasound[0066]medical treatment system108 including atube96 and including anend effector110 having a plurality offingers98. Thetube96 has adistal end100 insertable into a patient and has alumen102 with adistal opening104. Thefingers98 are extendable out of thedistal opening104 of thelumen102 creating a deployed state (seen in FIG. 10) and are at-least-partially retractable into thedistal opening104 of thelumen102 creating a stowed state (seen in FIG. 11). Eachfinger98 includes an ultrasound imaging and medical-treatment transducer114. The distance between the ultrasound imaging and medical-treatment transducers114 ofadjacent fingers98 is greater in the deployed state than in the stowed state.
• It is noted that the variations, modifications, and implementations, etc. previously discussed for the first expression of the third embodiment are equally applicable to the second and third expressions of the third embodiment.[0067]
• In one example of the first, second and third expressions of the third embodiment, the[0068]transducers106,112 and114 each have an ultrasound-emittingconcave surface116. In another example, not shown, the transducers have a planar ultrasound-emitting surface. In one arrangement, eachconcave surface116 is concave as one moves along the corresponding finger98 (as best seen in FIG. 10). In another arrangement, not shown, each concave surface is concave as one moves across the corresponding finger or is concave as one moves both along and across the corresponding finger (such as, for example, with a hemispherically-concave surface). In one design, theconcave surfaces116 together have a substantially common focal zone when thefingers98 are in the deployed state. Theend effector110 is seen with itsfingers98 facing thepatient tissue119 in FIG. 10. In another design, not shown, the focal zones are not common. In one configuration, thefingers98 define an open-hand finger array118 in the deployed state. An alternate flexible finger arrangement in the form of asubstitute end effector120 is shown in FIG. 12, wherein thefingers122 define a clawed-hand finger array124 in the deployed state. Thesubstitute end effector120 is seen with itsfingers122 surrounding thepatient tissue126 for imaging and/or medical treatment by theultrasound transducers128 in FIG. 12. In other transducer arrangements, not shown, one or more or all of the ultrasound transducers face outward rather than facing inward.
• In the same or another example of the first, second and third expressions of the third embodiment, the[0069]fingers98 are at least four in number. In the same or yet another example of the second and third expressions of the third embodiment, the end effector110 (as well as the substitute end effector120) is an open-surgery end effector, an endoscopic end effector, a laparoscopic end effector (as shown in FIG. 9), a catheter end effector (such as, but not limited to, an intravascular catheter end effector), or a needle end effector, as can be appreciated by those skilled in the art.
• In one enablement, as shown in FIG. 9, the ultrasound[0070]medical treatment system108 also includes ahandpiece130 operatively connected to theend effector110 and to anultrasound controller132 operatively connected to a foot-pedal power switch133, as can be appreciated by those skilled in the art.
• Faceted Ultrasound Medical Transducer Assembly[0071]
• A fourth embodiment of the present invention is shown in FIGS.[0072]13-15. A first expression of the fourth embodiment of the present invention is for an ultrasoundmedical system134 including anultrasound transducer assembly136 insertable into a patient. Theultrasound transducer assembly136 has alongitudinal axis138. Theultrasound transducer assembly136 includes a plurality P ofultrasound transducers140. Eachtransducer140 has an ultrasound-emittingsurface142 oriented at an angle of substantially 360/P degrees apart from the ultrasound-emittingsurface142 of anadjacent transducer140 when viewed in a cross section (see FIG. 15) of thetransducer assembly136 taken by a cutting plane which is perpendicular to thelongitudinal axis138.
• Advantages of such a transducer configuration include, in one example, providing directed or focused medical-treatment ultrasound which is not possible with a cylindrical ultrasound transducer, as can be appreciated by those skilled in the art.[0073]
• It is noted that an[0074]ultrasound transducer assembly136 insertable into a patient is an ultrasound imaging transducer assembly, an ultrasound medical-treatment transducer assembly, or an ultrasound imaging and medical-treatment transducer assembly. An ultrasound imaging transducer assembly has at least one ultrasound imaging transducer, and an ultrasound medical-treatment transducer assembly has at least one ultrasound medical-treatment transducer. An ultrasound imaging and medical-treatment transducer assembly has at least one ultrasound imaging transducer and at least one ultrasound medical-treatment transducer or has at least one ultrasound imaging and medical-treatment transducer.
• A second expression of the fourth embodiment of the present invention is for an ultrasound medical-[0075]treatment system144 including anend effector146 insertable into a patient. Theend effector146 includes an ultrasound medical-treatment transducer assembly148. The ultrasound medical-treatment transducer assembly148 has alongitudinal axis138. The ultrasound medical-treatment transducer assembly148 includes a plurality P of ultrasound medical-treatment transducers150. Eachtransducer150 has an ultrasound-emittingsurface142 which faces away from thelongitudinal axis138 and which is oriented at an angle of substantially360/P degrees apart from the ultrasound-emittingsurface142 of anadjacent transducer150 when viewed in a cross section (see FIG. 15) of thetransducer assembly148 taken by a cutting plane which is perpendicular to thelongitudinal axis138. In one example, at least one of the ultrasound medical-treatment transducers150 is also adapted for ultrasound imaging.
• A fourth method of the present invention is for ultrasound medical treatment of a patient and uses the ultrasound[0076]medical treatment system144 as previously described in the second expression of the fourth embodiment. The fourth method includes steps a) through b). Step a) includes inserting theend effector146 into the liver of the patient. Step b) includes medically treating a lesion in the liver with ultrasound from the ultrasound medical-treatment transducer assembly148. In one example, step a) interstially inserts theend effector146 into the lesion. In another example, step a) endoscopically inserts theend effector146 into the liver through the hepato-biliary duct system.
• A third expression of the fourth embodiment of the present invention is for an ultrasound[0077]medical treatment system144 including anend effector146 insertable into a patient. Theend effector146 includes an ultrasound imaging and medical-treatment transducer assembly152. The ultrasound imaging and medical-treatment transducer assembly152 has alongitudinal axis138. The ultrasound imaging and medical-treatment transducer assembly152 includes a plurality P of ultrasound imaging and medical-treatment transducers154. Eachtransducer154 has an ultrasound-emittingsurface142 which faces away from thelongitudinal axis138 and which is oriented at an angle of substantially 360/P degrees apart from the ultrasound-emittingsurface142 of anadjacent transducer154 when viewed in a cross section (see FIG. 15) of thetransducer assembly152 taken by a cutting plane which is perpendicular to thelongitudinal axis138.
• A fifth method of the present invention is for ultrasound medical treatment of a patient and uses the ultrasound medical-[0078]treatment system144 as previously described in the third expression of the fourth embodiment. The fourth method includes steps a) through c). Step a) includes inserting theend effector146 into the liver of the patient. Step b) includes identifying a lesion in the liver for medical treatment at least in part from ultrasound imaging using the ultrasound imaging and medical-treatment transducer assembly152. Step c) includes medically treating the lesion with ultrasound from the ultrasound imaging and medical-treatment transducer assembly152. In one example, step a) interstially inserts theend effector146 into the lesion. In another example, step a) endoscopically inserts theend effector146 into the liver through the hepato-biliary duct system.
• In one example of the previously-described first, second and third expressions of the fourth embodiment, the[0079]transducer assembly136,148, and152 has adistal tip156 and has atip transducer158. In one design, the tip transducer is a forward facing tip transducer. In another design, the tip transducer is a sideways facing tip transducer. In one variation, the tip transducer is an ultrasound imaging tip transducer. In another variation, the tip transducer is an ultrasound medical-treatment tip transducer. In a further variation, the tip transducer is an ultrasound imaging and medical-treatment tip transducer. In an additional variation, the tip transducer is a transponder which emits electromagnetic waves or mechanical waves or both.
• In the same or a different example of the previously-described first, second and third expressions of the third embodiment, each ultrasound-emitting[0080]surface142 is substantially straight when viewed in the cross section, as seen in FIG. 15. In one variation, as seen in FIG. 14, each ultrasound-emittingsurface142 has a substantially concave shape as one moves along the ultrasound-emittingsurface142 in a direction parallel to thelongitudinal axis138, and each ultrasound-emittingsurface142 has a focal zone. In a first alternate transducer arrangement seen FIG. 16, each ultrasound-emittingsurface162 has a substantially planar shape. In a second alternate transducer arrangement seen in FIG. 17, each ultrasound-emittingsurface164 has a substantially concave shape when viewed in the cross section, and each ultrasound-emittingsurface164 has a focal zone. In one modification, each ultrasound-emittingsurface164 also has a substantially concave shape as one moves along the ultrasound-emittingsurface164 in a direction parallel to the longitudinal axis (such as, for example, by the ultrasound-emittingsurface164 having a hemispherically-concave shape). Such ultrasound-emitting surface shapes are equally applicable to any ultrasound transducer mentioned in any other embodiment of the invention.
• In the same or a different example of the previously-described first, second and third expressions of the third embodiment, P is no greater than four. In one variation, P equals three as seen in FIGS. 15 and 17. In another variation, P equals two as seen in FIG. 16.[0081]
• In the same or a different example of the previously-described second and third expressions of the third embodiment, the[0082]end effector146 is an open-surgery end effector, an endoscopic end effector, a laparoscopic end effector (as shown in FIG. 13), a catheter end effector (such as, but not limited to, an intravascular catheter end effector), or a needle end effector, as can be appreciated by those skilled in the art. In one enablement, as shown in FIG. 13, the ultrasoundmedical treatment system144 also includes ahandpiece166 operatively connected to theend effector146 and to anultrasound controller168 operatively connected to a foot-pedal power switch169, as can be appreciated by the artisan.
Ultrasound Medical Treatment Applications
• Excisional and Ultrasound Medical Treatment System[0083]
• A fifth embodiment of the present invention is shown in FIGS.[0084]18-20. In a first expression of the fifth embodiment of the present invention, an ultrasoundmedical treatment system170 includes atube172, afirst end effector174, and asecond end effector176. Thetube172 has adistal end178 insertable into apatient180 and has alumen182. Thefirst end effector174 has acutting tool184, is introducible into thelumen182 of the insertedtube172 from outside thepatient180, and is translatable through thelumen182 of the insertedtube172 to inside thepatient180. Thesecond end effector176 has an ultrasound medical-treatment transducer assembly186, is introducible into thelumen182 of the insertedtube172 from outside thepatient180, and is translatable through thelumen182 of the insertedtube172 to inside thepatient180. In one variation, the first and second end effectors are introduced into the lumen through separate openings in the lumen or through separate branch channels leading to the lumen. In another variation, the first and second end effectors are introduced into the lumen through the same opening in the lumen. In one modification, a lumen opening is disposed at the end of the tube. In another modification, a lumen opening is spaced apart from the end of the tube.
• A second expression of the fifth embodiment of the present invention is for an ultrasound[0085]medical treatment system170 including atube172, afirst end effector174, and asecond end effector176. The tube has adistal end178 insertable into apatient180 and has alumen182 with adistal opening188 and aproximal opening190. Thefirst end effector174 has acutting tool184, is introducible into theproximal opening190, and is translatable through thelumen182 to thedistal opening188. Thesecond end effector176 has an ultrasound medical-treatment transducer assembly186, is introducible into theproximal opening190, and is translatable through thelumen182 to thedistal opening188.
• In one example of the first and second expressions of the fifth embodiment of the present invention, the[0086]lumen182 is sized to allow introduction of only one of the first andsecond end effectors174 and176 at a time. In the same or another example, thedistal end178 of thetube172 is interstitially insertable intopatient tissue192 of thepatient180. In the same or a different example, thecutting tool184 is abiopsy cutting tool194 or other excisional cutting tool.
• A third expression of the fifth embodiment of the present invention is for an ultrasound[0087]medical treatment system170 including atube172, afirst end effector174, and asecond end effector176. Thetube172 has adistal end178 interstitially insertable intobreast tissue196 of apatient180 and has alumen182 with adistal opening188 and aproximal opening190. Thefirst end effector174 has a biopsy cutting tool194 (or other excisional cutting tool), is introducible into theproximal opening190, and is translatable through thelumen182 to thedistal opening188. Thesecond end effector176 has an ultrasound medical-treatment transducer assembly186, is introducible into theproximal opening190, and is translatable through thelumen182 to thedistal opening188. Thelumen182 is sized to allow introduction of only one of the first andsecond end effectors174 and176 at a time. In one design, the first end effector also includes a suction mechanism to draw in patient tissue to be biopsied by thebiopsy cutting tool194. In one application, thetube172 and the first end effector174 (with thebiopsy cutting tool194 including a suction mechanism) are based on components of a Mammotome® Breast Biopsy System manufactured by Ethicon Endo-Surgery, Inc. (a Johnson & Johnson Company).
• A sixth method of the invention is for ultrasound medical treatment of a[0088]patient180 and uses the ultrasoundmedical treatment system170 as previously described in the third expression of the fifth embodiment of the present invention. The sixth method includes steps a) through h). Step a) includes identifying possiblycancerous breast tissue196 of the patient. Step b) includes interstitially inserting thedistal end178 of thetube172 into thepatient180 with thedistal opening188 disposed proximate thebreast tissue196 and with theproximal opening190 disposed outside the patient. Step c) includes introducing thefirst end effector174 into theproximal opening190 and translating thefirst end effector174 through thelumen182 to thedistal opening188. Step d) includes obtaining a biopsy sample of thebreast tissue196 with thebiopsy cutting tool194. Step e) includes removing thefirst end effector174 from thelumen182, Step f) includes introducing thesecond end effector176 into theproximal opening190 and translating thesecond end effector176 through thelumen182 to thedistal opening188. Step g) includes identifying an area of hemorrhaging in the breast tissue where the biopsy sample was obtained. Step h) includes medically treating the identified area with ultrasound using thetransducer assembly186 to substantially stop the hemorrhaging. In one application, the sixth method of the invention also includes the steps of testing the biopsy sample for cancer and substantially ablating any remaining cancer in the breast tissue with ultrasound using thetransducer assembly186. Advantages of such an ultrasound medical treatment system and method include the ease of obtaining a breast biopsy and the control of hemorrhaging caused by the biopsy procedure coupled together in a minimally invasive manner.
• In a fourth expression of the fifth embodiment of the present invention, an ultrasound[0089]medical treatment system170 includes atube172, afirst end effector174, and asecond end effector176. Thetube172 has adistal end178 insertable into apatient180 and has alumen182. Thefirst end effector174 has acutting tool184, is introducible into thelumen182 of the insertedtube172 from outside thepatient180, and is translatable through thelumen182 of the insertedtube172 to inside thepatient180. Thesecond end effector176 has an ultrasound imaging and medical-treatment transducer assembly198, is introducible into thelumen182 of the insertedtube172 from outside thepatient180, and is translatable through thelumen182 of the insertedtube172 to inside thepatient180. In one variation, the first and second end effectors are introduced into the lumen through separate openings in the lumen or through separate branch channels leading to the lumen. In another variation, the first and second end effectors are introduced into the lumen through the same opening in the lumen. In one modification, a lumen opening is disposed at the end of the tube. In another modification, a lumen opening is spaced apart from the end of the tube.
• A fifth expression of the fifth embodiment of the present invention is for an ultrasound[0090]medical treatment system170 including atube172, afirst end effector174, and asecond end effector176. The tube has adistal end178 insertable into apatient180 and has alumen182 with adistal opening188 and aproximal opening190. Thefirst end effector174 has acutting tool184, is introducible into theproximal opening190, and is translatable through thelumen182 to thedistal opening188. Thesecond end effector176 has an ultrasound imaging and medical-treatment transducer assembly198, is introducible intoproximal opening190, and is translatable through thelumen182 to thedistal opening188.
• In one example of the fourth and fifth expressions of the fifth embodiment of the present invention, the[0091]lumen182 is sized to allow introduction of only one of the first andsecond end effectors174 and176 at a time. In the same or another example, thedistal end178 of thetube172 is interstitially insertable intopatient tissue192 of thepatient180. In the same or a different example, thecutting tool184 is abiopsy cutting tool194 or other excisional cutting tool.
• A sixth expression of the fifth embodiment of the present invention is for an ultrasound[0092]medical treatment system170 including atube172, afirst end effector174, and asecond end effector176. Thetube172 has adistal end178 interstitially insertable intobreast tissue196 of apatient180 and has alumen182 with adistal opening188 and aproximal opening190. Thefirst end effector174 has a biopsy cutting tool194 (or other excisional cutting tool), is introducible into theproximal opening190, and is translatable through thelumen182 to thedistal opening188. Thesecond end effector176 has an ultrasound imaging and medical-treatment transducer assembly196, is introducible into theproximal opening190, and is translatable through thelumen182 to thedistal opening188. Thelumen182 is sized to allow introduction of only one of the first andsecond end effectors174 and176 at a time. In one application, thetube172 and the first end effector174 (with thebiopsy cutting tool194 including a suction mechanism) are based on components of a Mammotome® Breast Biopsy System manufactured by Ethicon Endo-Surgery, Inc. (a Johnson & Johnson Company).
• A seventh method of the invention is for ultrasound medical treatment of a[0093]patient180 and uses the ultrasoundmedical treatment system170 as previously described in the sixth expression of the fifth embodiment of the present invention. The seventh method includes steps a) through h). Step a) includes identifying possiblycancerous breast tissue196 of the patient. Step b) includes interstitially inserting thedistal end178 of thetube172 into thepatient180 with thedistal opening188 disposed proximate thebreast tissue196 and with theproximal opening190 disposed outside the patient. Step c) includes introducing thefirst end effector174 into theproximal opening190 and translating thefirst end effector174 through thelumen182 to thedistal opening188. Step d) includes obtaining a biopsy sample of thebreast tissue196 with thebiopsy cutting tool194. Step e) includes removing thefirst end effector174 from thelumen182, Step f) includes introducing thesecond end effector176 into theproximal opening190 and translating thesecond end effector176 through thelumen182 to thedistal opening188. Step g) includes identifying an area of hemorrhaging in the breast tissue where the biopsy sample was obtained from ultrasound imaging using thetransducer assembly198. Step h) includes medically treating the identified area with ultrasound using thetransducer assembly198 to substantially stop the hemorrhaging. In one application, the seventh method of the invention also includes the steps of testing the biopsy sample for cancer and substantially ablating any remaining cancer in the breast tissue with ultrasound using thetransducer assembly198. Advantages of such an ultrasound medical treatment system and method include the ease of obtaining a breast biopsy and the imaging and control of hemorrhaging caused by the biopsy procedure coupled together in a minimally invasive manner.
• In one enablement, as shown in FIG. 18, the ultrasound[0094]medical treatment system170 also includes ahandpiece199 which is attached to thetube172, which contains thefirst end effector174 for extending thecutting tool184 into, and withdrawing it from, thelumen182, and which is operatively connected to anultrasound controller201 via afirst cable203. Thesecond end effector176, in this enablement, is operatively connected to theultrasound controller201 via asecond cable205 and is inserted into thelumen182 from outside thehandpiece199 as shown in FIG. 18.
• Staging Medical Treatment Using Ultrasound[0095]
• An eighth method of the invention is shown in block diagram form in FIG. 21 and is for medical treatment of a patient. The eighth method includes steps a) through f). Step a) is labeled “Obtain Transducer Assembly” in[0096]block200 of FIG. 21. Step a) includes obtaining an ultrasound imaging transducer assembly. Step b) is labeled “Insert Assembly Into Gastrointestinal Area” inblock202 of FIG. 21. Step b) includes inserting the transducer assembly into a gastrointestinal area of the patient. Step c) is labeled “Guide Assembly” inblock204 of FIG. 21. Step c) includes guiding the transducer assembly within the gastrointestinal area. Step d) is labeled “Identify Patient Tissue For Treatment” inblock206 of FIG. 21. Step d) includes identifying patient tissue in the gastrointestinal area for medical treatment. Step e) is labeled “Stage Treatment From Ultrasound Imaging” inblock208 of FIG. 21. Step e) includes staging the medical treatment from ultrasound imaging using the transducer assembly. Step f) is labeled as “Medically Treat Patient” inblock210 of FIG. 21. Step f) includes medically treating the patient tissue according to the staging of step e). It is pointed out that in the eighth method the medical treatment need not include ultrasound medical treatment with the transducer assembly used for staging and/or need not include ultrasound medical treatment with any other ultrasound transducer assembly. In one procedure depending on the pathology size and site, a first transducer assembly is used endoscopically to stage the medical treatment in step e) and a second transducer assembly is used laparoscopically to medically treat the patient tissue with ultrasound in step f). In one variation, the first transducer assembly is used laparoscopically to stage the medical treatment in step e) and the second transducer assembly is used endoscopically to medically treat the patient tissue with ultrasound in step f). In another procedure, the medical treatment in step f) is radio-frequency, laser, microwave, or chemical ablation medical treatment. Other types of medical treatment are left to the artisan.
• It is noted that the gastrointestinal (GI) area of a human patient includes, without limitation, the esophagus and the stomach of the upper GI area and the rectum and the colon of the lower GI area. It further is noted that the liver is also considered to be in the GI area for purposes of this method.[0097]
• By “staging the medical treatment from ultrasound imaging” is meant at least using ultrasound images to determine the three-dimensional size and shape of the patient tissue that is to receive medical treatment. For example, and without limitation, upper and lower GI tumors can be visualized with high frequency (6-30 MHz) ultrasound imaging using a cylindrical, side-firing, or half-convex ultrasound array or single-element transducer introduced endoscopically into the GI tract. All layers of the GI tract can be visualized including all layers of the esophagus, stomach, duodenum, colon, etc. In one procedure, a three-dimensional representation of the GI structures is created by collating a series of two-dimensional scans generated by axially advancing the ultrasound transducer. Any neoplastic growth, its morphological characteristics, as well as the tumor's size and shape can easily be determined from the three-dimensional representation.[0098]
• Advantages of such medical-treatment staging from ultrasound imaging include, in one example, providing a non-invasive medical-treatment staging technique which has greater resolution and which is more practical compared to conventional extracorporeal medical-treatment staging techniques such as using x-rays or MRI imaging or compared to using conventional endoscopic optical techniques.[0099]
• A ninth method of the invention is for ultrasound medical treatment of a patient and includes steps a) through f). The ninth method uses the same block diagram of FIG. 21 as does the eighth method but with “end effector” replacing “transducer assembly” in[0100]block200 and with “end effector” replacing “assembly” inblocks202 and204. Step a) includes obtaining an end effector having an ultrasound imaging and medical-treatment transducer assembly. Step b) includes inserting the end effector into a gastrointestinal area of the patient. Step c) includes guiding the transducer assembly within the gastrointestinal area. Step d) includes identifying patient tissue in the gastrointestinal area for medical treatment. Step e) includes staging the medical treatment from ultrasound imaging using the transducer assembly. Step f) includes medically treating the patient tissue with ultrasound using the transducer assembly according to the staging of step e).
• A tenth method of the invention is for ultrasound medical treatment of a patient and includes steps a) through f). The tenth method uses the same block diagram of FIG. 21 as does the eighth method but with “end effector” replacing “transducer assembly” in[0101]block200 and with “end effector” replacing “assembly” inblocks202 and204. Step a) includes obtaining an end effector having an ultrasound imaging and medical-treatment transducer assembly. Step b) includes inserting the end effector into a gastrointestinal area of the patient. Step c) includes guiding the transducer assembly within the gastrointestinal area. Step d) includes identifying patient tissue in the gastrointestinal area for medical treatment at least in part from ultrasound imaging using the transducer assembly. Step e) includes staging the medical treatment from ultrasound imaging using the transducer assembly. Step f) includes medically treating the patient tissue with ultrasound using the transducer assembly according to the staging of step e). In one procedure, large GI tumors are staged through a laparoscopic access to the GI area, whereby the tumors are identified, staged and treated using an end effector having an ultrasound imaging and medical-treatment transducer assembly.
• In one example of the ninth and tenth methods of the invention, the patient tissue is gastroesophageal tissue containing a lesion, and step f) ultrasonically substantially ablates the lesion. In one modification, the gastroesophageal tissue contains a blood vessel supplying blood to the lesion, and step f) ultrasonically treats the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel.[0102]
• In another example of the ninth and tenth methods of the invention, the patient tissue is liver tissue containing a lesion and a blood vessel supplying blood to the lesion, and step f) ultrasonically treats the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel.[0103]
• In an additional example of the ninth and tenth methods of the invention, the patient tissue is liver tissue containing a lesion, and step f) ultrasonically substantially ablates the lesion. In one modification, the liver tissue contains a blood vessel supplying blood to the lesion, and step f) also ultrasonically treats the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel. In one procedure, an end effector having an ultrasound imaging and medical-treatment transducer assembly is introduced endoscopically into the GI tract, is advanced retrogradely through the ampulla of Vater up the common bile duct, and is advanced further into the hepatic duct system where liver parenchyma requiring medical treatment (such as cholangio-carcinomas) are identified, staged, and treated using the end effector.[0104]
• Treatment of Lung Lesions Using Ultrasound[0105]
• An eleventh method of the invention is shown in block diagram form in FIG. 22 and is for ultrasound medical treatment of a patient. The eleventh method includes steps a) through f). Step a) is labeled “Obtain End Effector” in[0106]block212 of FIG. 22. Step a) includes obtaining an end effector having an ultrasound medical-treatment transducer assembly. Step b) is labeled “Insert End Effector” inblock214 of FIG. 22. Step b) includes inserting the end effector into the patient. Step c) is labeled “Guide End Effector To Lung” inblock216 of FIG. 22. Step c) includes guiding the end effector within the patient to a lung of the patient. Step d) is labeled “Identify Lesion” inblock218 of FIG. 22. Step d) includes identifying a lesion on or in the lung for medical treatment. Step e) is labeled “Position Transducer Assembly” inblock220 of FIG. 22. Step e) includes positioning the transducer assembly on or in the lesion. Step f) is labeled “Medically Treat Lesion” inblock222 of FIG. 22. Step f) includes medically treating the lesion with ultrasound using the transducer assembly.
• A twelfth method of the invention is for ultrasound medical treatment of a patient and includes steps a) through f). The twelfth method uses the same block diagram of FIG. 22 as does the eleventh method. Step a) includes obtaining an end effector having an ultrasound imaging and medical-treatment transducer assembly. Step b) includes inserting the end effector into the patient. Step c) includes guiding the end effector within the patient to a lung of the patient. Step d) includes identifying a lesion on or in the lung for medical treatment at least in part from ultrasound imaging using the transducer assembly. Step e) includes positioning the transducer assembly on or in the lesion. Step f) includes medically treating the lesion with ultrasound using the transducer assembly.[0107]
• In one example of the eleventh and twelfth methods, step f) ultrasonically substantially ablates the lesion. In one application, the end effector is an endoscopic end effector and step b) transbronchial-endoscopically inserts the end effector into the patient. In another application, the end effector is a needle end effector and step b) interstitially inserts the end effector into the patient. In one implementation, step e) positions the transducer assembly on the lesion. In another implementation, step e) positions the transducer assembly in the lesion. In one practice of the eleventh and twelfth methods, step c) a bronchoscope is used to guide the end effector to a lung of the patient.[0108]
• Ultrasound medical treatment of the lung has conventionally been avoided because such ultrasound is prevented from reaching a lesion within the lung by the alveoli of the lung which contain air which reflect back most of the ultrasound preventing the ultrasound from effectively penetrating the lung to the lesion. Using higher power ultrasound for effective penetration of the lung to reach the lesion would injure or destroy the alveoli which are needed for breathing. Applicants theorized that positioning the ultrasound transducer on or in a lesion of the lung would allow ultrasound medical treatment of the lesion (such as a tumor or an infarct) without injury to the alveoli. It is noted that Applicants' method is applicable to surface lesions as well as non-surface lesions. Advantages of Applicants' eleventh and twelfth methods for ultrasound medical treatment include, in one example, the destruction of lung cancer lesions in cases which otherwise would be inoperable or incurable.[0109]
• Ultrasound-Based Occlusive Procedure for Medical Treatment[0110]
• A thirteenth method of the invention is shown in block diagram form in FIG. 23 and is for ultrasound medical treatment of a patient. The thirteenth method includes steps a) through e). Step a) is labeled “Obtain End Effector” in[0111]block224 of FIG. 23. Step a) includes obtaining an end effector having an ultrasound medical-treatment transducer assembly. Step b) is labeled “Insert End Effector” inblock226 of FIG. 23. Step b) includes inserting the end effector into the patient. Step c) is labeled “Guide End Effector” inblock228 of FIG. 23. Step c) includes guiding the end effector within the patient to a region of patient tissue containing a lesion. Step d) is labeled “Identify Blood Vessel Supplying Lesion” inblock230 of FIG. 23. Step d) includes identifying a blood vessel in the region which supplies blood to the lesion. Step e) is labeled “Stop Blood Supply Using Ultrasound” inblock232 of FIG. 23. Step e) includes medically treating the blood vessel with ultrasound from the transducer assembly to substantially seal the blood vessel to stop the supply of blood to the lesion from the blood vessel. One implementation of the thirteenth method of the invention also includes the step of medically treating the lesion with ultrasound from the transducer assembly to substantially ablate the lesion.
• A fourteenth method of the invention is for ultrasound medical treatment of a patient and includes steps a) through g). The fourteenth method is similar to the thirteenth method. Step a) includes obtaining an end effector having an ultrasound imaging and medical-treatment transducer assembly. Step b) includes inserting the end effector into the patient. Step c) includes guiding the end effector within the patient to a region of patient tissue containing a lesion. Step d) includes identifying the lesion at least in part from ultrasound imaging using the transducer assembly. Step e) includes identifying a blood vessel in the region which supplies blood to the lesion from ultrasound imaging using the transducer assembly. Step f) includes medically treating the blood vessel with ultrasound from the transducer assembly to substantially seal the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel. Step g) includes medically treating the lesion with ultrasound from the transducer assembly to substantially ablate the lesion. It is noted that Doppler ultrasound imaging alone, gray-scale ultrasound imaging alone, and a combination of Doppler and gray-scale ultrasound imaging are known ultrasound techniques to image blood flow in blood vessels.[0112]
• In one application of the thirteenth and fourteenth methods, the end effector is an open-surgery end effector. In another application, the end effector is an endoscopic end effector. In a further application, the end effector is a laparoscopic end effector. In an additional application, the end effector is a catheter end effector (such as, but not limited to, an intravascular catheter end effector). In a different application, the end effector is a needle end effector.[0113]
• A broadened thirteenth method of the invention eliminates the inserting into and guiding within steps of the above-described thirteenth method and includes steps a) through c). Step a) includes obtaining an end effector having an ultrasound medical-treatment transducer assembly. Step b) includes identifying a blood vessel in the patient which supplies blood to a lesion. Step c) includes medically treating the blood vessel with ultrasound from the transducer assembly to substantially seal the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel.[0114]
• A broadened fourteenth method of the invention eliminates the inserting into and guiding within steps of the above-described fourteenth method and includes steps a) through e). Step a) includes obtaining an end effector having an ultrasound imaging and medical-treatment transducer assembly. Step b) includes identifying a lesion in the patient at least in part from ultrasound imaging using the transducer assembly. Step c) includes identifying a blood vessel which supplies blood to the lesion from ultrasound imaging using the transducer assembly. Step d) includes medically treating the blood vessel with ultrasound from the transducer assembly to substantially seal the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel. Step e) includes medically treating the lesion with ultrasound from the transducer assembly to substantially ablate the lesion.[0115]
• In one example of the broadened thirteenth and fourteenth methods, the end effector is an extracorporeal end effector. In another example, the end effector is an intracorporeal end effector. In a further example, the end effector can be used in both an extracorporeal mode and in an intracorporeal mode.[0116]
• Advantages of Applicants' thirteenth and broadened thirteenth methods for ultrasound medical treatment include, in one example, the indirect destruction of cancer lesions by ultrasound hemostasis in blood vessels supplying the cancer lesions in cases which otherwise would be inoperable or incurable because the location of the cancer lesions prevents medical treatment of the lesions themselves. Advantages of Applicants' fourteenth and broadened fourteenth methods for ultrasound treatment include, in one example, direct destruction of cancer lesions by ultrasound ablation of the cancer lesions together with the indirect destruction of any cancer lesions missed in the ultrasound ablation step by ultrasound hemostasis in blood vessels supplying blood to the missed cancer lesions.[0117]
Guiding and Targeting Ultrasound End Effectors
• Guiding Ultrasound End Effector for Medical Treatment[0118]
• A sixth embodiment of the present invention is shown in FIG. 24. In a first expression of the sixth embodiment of the present invention, an ultrasound medical treatment system[0119]234 (only a portion of which is shown in FIG. 24) includes anend effector236 and at least threereceivers238. Theend effector236 has atransducer assembly240 including atransducer242 having at least onetransducer element244 adapted for emitting medical-treatment ultrasound waves and for emitting mechanical waves. It is noted that the terminology “mechanical waves” includes ultrasound and non-ultrasound compression (acoustic) waves and ultrasound and non-ultrasound shear waves, and that waves include wave pulses. Thereceivers238 are spaced apart from thetransducer assembly240, and thereceivers238 are adapted to receive the emitted mechanical waves for use in locating the position of thetransducer assembly240. Conventional methods (including triangulation methods) for locating the position of a transponder emitting waves which are received by three receivers are well known. A second expression of the sixth embodiment is identical to the first expression of the sixth embodiment except that the at-least-onetransducer element244 is also adapted for emitting imaging ultrasound waves. In one variation of the first and second expressions of the sixth embodiment, the end effector and the receivers are disposable outside (including in one modification on) the patient. In another variation, the end effector is insertable into the patient and the receivers are disposable outside (including in one modification on) the patient.
• A seventh embodiment of the present invention is shown in FIG. 25. In a first expression of the seventh embodiment of the present invention, an ultrasound medical treatment system[0120]246 (only a portion of which is shown in FIG. 25) includes anend effector248 and at least threereceivers250. Theend effector248 has an ultrasound medical-treatment transducer assembly252 and has atransponder254 Thetransponder254 is adapted to emit waves, and the waves include electromagnetic waves or mechanical waves or both. Thereceivers250 are spaced apart from thetransducer assembly252, and thereceivers250 are adapted to receive the emitted waves for use in locating the position of thetransponder254. In a second expression of the seventh embodiment, the ultrasound medical-treatment transducer assembly252 is an ultrasound imaging and medical-treatment transducer assembly256.
• In one application of the first and second expressions of the seventh embodiment, the[0121]end effector248 is insertable into a patient, thetransponder254 is adapted to emit electromagnetic waves, and thereceivers250 are disposable outside the patient. In one variation, thereceivers250 are disposable on the patient. In another application, the end effector is disposable outside (including in one modification on) the patient and the receivers are disposable outside (including in one modification on) the patient.
• In one example of the first and second expressions of the seventh embodiment, the[0122]end effector248 is an endoscopic end effector, a laparoscopic end effector, a catheter end effector (such as, but not limited to, an intravascular catheter end effector), or a needle end effector. In one design of the first and second expressions of the seventh embodiment, theend effector248 has adistal tip260, and thetransponder254 is disposed at thedistal tip260 of theend effector248. In one variation, thetransducer assembly252 and256 is disposed proximate thetransponder254.
• A fifteenth method of the invention uses the ultrasound medical treatment system of the first expression of the seventh embodiment and includes steps a) through h). Step a) includes inserting the[0123]end effector248 into the patient. Step b) includes disposing thereceivers250 outside the patient. Step c) includes emitting electromagnetic waves from thetransponder254. Step d) includes receiving the electromagnetic waves with thedisposed receivers250. Step e) includes calculating the position of thetransponder254 from the received electromagnetic waves. Step f) includes guiding the end effector within the patient to a desired location from the calculated position of thetransponder254. Step g) includes, after step f), identifying patient tissue for medical treatment. Step h) includes medically treating the identified patient tissue with ultrasound using thetransducer assembly252.
• A sixteenth method of the invention uses the ultrasound medical treatment system of the second expression of the seventh embodiment and includes steps a) through h). Step a) includes inserting the[0124]end effector248 into the patient. Step b) includes disposing thereceivers250 outside the patient. Step c) includes emitting electromagnetic waves from thetransponder254. Step d) includes receiving the electromagnetic waves with thedisposed receivers250. Step e) includes calculating the position of thetransponder254 from the received electromagnetic waves. Step f) includes guiding the end effector within the patient to a desired location from the calculated position of thetransponder254. Step g) includes, after step f), identifying patient tissue for medical treatment at least in part from ultrasound imaging using thetransducer assembly256. Step h) includes medically treating the identified patient tissue with ultrasound using thetransducer assembly256.
• A known electromagnetic transponder and three-receiver system for calculating the position of the transponder and for guiding the transponder (which is attached to a heart catheter for monitoring the heart) inside a patient is the CARTO™ EP Navigation System used with a NAVI-STAR ® catheter manufactured by Biosense Webster (a Johnson & Johnson Company).[0125]
• Advantages of an end effector with ultrasound medical treatment and position-location capabilities include, in one example, more accurately guiding the end effector inside a patient to patient tissue for ultrasound medical treatment of the patient tissue.[0126]
• Method for Aiming Ultrasound for Medical Treatment[0127]
• A seventeenth method of the invention is shown in block diagram form in FIG. 26 and is for ultrasound medical treatment of a patient. The seventeenth method includes steps a) through f). Step a) is labeled “Obtain End Effector” in[0128]block262 of FIG. 26. Step a) includes obtaining an end effector having an ultrasound medical-treatment transducer assembly. Step b) is labeled “Aim Transducer Assembly” inblock264 of FIG. 26. Step b) includes aiming the transducer assembly to focus ultrasound energy at a desired focal zone of patient tissue. It is noted that, in one example, to aim a transducer assembly means to focus ultrasound energy at a particular distance from the transducer assembly and along a particular direction. Step c) is labeled “Activate Transducer Assembly” inblock266 of FIG. 26. Step c) includes activating the aimed transducer assembly to emit ultrasound energy sufficient to achieve a temperature increase in the patient tissue essentially without medically affecting the patient tissue. Step d) is labeled “Detect Actual Focal Zone” inblock268 of FIG. 26. Step d) includes after step c) detecting, from reflected ultrasound energy, an actual focal zone of patient tissue having a temperature increase. Step e) is labeled “Correct For Any Aiming Error” inblock269 of FIG. 26. Step e) includes correcting for any error between the desired focal zone and the actual focal zone. Step f) is labeled “Medically Treat Patient Tissue” inblock270 of FIG. 26. Step f) includes after step e), medically treating the patient tissue with ultrasound using the transducer assembly. In one application, step d) uses one or more additional ultrasound transducer assemblies, separate from the ultrasound transducer assembly used in steps a) through c) and e) through f), to detect, from reflected ultrasound energy, the actual focal zone. In another application, the same ultrasound transducer assembly is used for steps a) through f). In one example of the seventeenth method, the end effector is an extracorporeal end effector. In another example, the end effector is an intracorporeal end effector. In a further example, the end effector can be used in both an extracorporeal mode and in an intracorporeal mode.
• An eighteenth method of the invention is for ultrasound medical treatment of a patient and includes steps a) through f). The eighteenth method uses the same block diagram of FIG. 26 as does the seventeenth method. Step a) includes obtaining an end effector having an ultrasound imaging and medical-treatment transducer assembly. Step b) includes aiming the transducer assembly to focus ultrasound energy at a desired focal zone of patient tissue. Step c) includes activating the aimed transducer assembly to emit ultrasound energy sufficient to achieve a temperature increase in the patient tissue essentially without medically affecting the patient tissue. Step d) includes after step c) detecting, from reflected ultrasound energy using the transducer assembly, an actual focal zone of patient tissue having a temperature increase. Step e) includes correcting for any error between the desired focal zone and the actual focal zone. Step f) includes after step e), medically treating the patient tissue with ultrasound using the transducer assembly. In one example, the end effector is an extracorporeal end effector. In another example, the end effector is an intracorporeal end effector. In a further example, the end effector can be used in both an extracorporeal mode and in an intracorporeal mode.[0129]
• A nineteenth method of the invention is for ultrasound medical treatment of a patient and includes steps a) through i). The nineteenth method uses the same block diagram of FIG. 26 as does the seventeenth method but with three extra steps added between[0130]block262's step a) and block264's step b) of the seventeenth method. In the nineteenth method, step a) includes obtaining an end effector having an ultrasound imaging and medical-treatment transducer assembly. Step b) includes inserting the end effector into the patient. Step c) includes guiding the end effector inside the patient. Step d) includes identifying a desired focal zone of patient tissue at least in part from ultrasound imaging using the transducer assembly. Step e) includes aiming the transducer assembly to focus ultrasound energy at the desired focal zone of patient tissue. Step f) includes activating the aimed transducer assembly to emit ultrasound energy sufficient to achieve a temperature increase in the patient tissue essentially without medically affecting the patient tissue. Step g) includes after step f) detecting, from reflected ultrasound energy using the transducer assembly, an actual focal zone of patient tissue having a temperature increase. Step h) includes correcting for any error between the desired focal zone and the actual focal zone. Step i) includes after step h), medically treating the patient tissue with ultrasound using the transducer assembly.
• In one example of the seventeenth through nineteenth methods, the end effector is an endoscopic end effector. In another example, the end effector is a laparoscopic end effector. In a further example, the end effector is a catheter end effector (such as, but not limited to, an intravascular catheter end effector). In an additional example, the end effector is a needle end effector.[0131]
• It is noted that the achieved temperature increase will decrease over time so that the detected temperature increase may not exactly equal the achieved temperature increase. In one implementation of the seventeenth through nineteenth methods, the temperature increase detected in the detecting step is equal substantially to the temperature increase achieved in the activating step. In one application of the seventeenth through nineteenth methods, the detected temperature increase is not greater than about five degrees Celsius. In one variation, the detected temperature increase is not greater than about two degrees Celsius.[0132]
• It is noted that conventional methods are known to the artisan to convert ultrasound image data into temperature images. In one variation of the seventeenth through nineteenth methods, the correcting step is performed automatically by a feedback control on the same mechanism used to aim the transducer assembly in the aiming step, as can be appreciated by the artisan. As previously noted, mechanisms for aiming an ultrasound medical-treatment transducer assembly include conventional electronic and/or mechanical techniques as are known to those skilled in the art.[0133]
• Advantages of correcting for any error between the desired and actual focal zones before medical treatment include more precise ultrasound medical treatment of patient tissue. In one example, better targeting maximizes the ablation of a lesion (and any appropriate margin) while minimizing medical treatment of patient tissue outside the lesion (and outside any appropriate margin).[0134]
Ultrasound Imaging of Patient Tissue
• Ultrasound Feedback in Medically-Treated Patients[0135]
• A twentieth method of the invention is shown in block diagram form in FIG. 27 and is for ultrasound imaging of patient tissue of a patient. The twentieth method includes steps a) through c). Step a) is labeled “Obtain A First Signal From A Location At A First Time” in[0136]block272 of FIG. 27. Step a) includes obtaining a first signal of a first imaging ultrasound wave which has been reflected back from a location in the patient tissue at a first time. Step b) is labeled “Obtain A Second Signal From The Location At A Later Second Time” inblock274 of FIG. 27. Step b) includes obtaining a second signal of a second imaging ultrasound wave which has been reflected back from the location in the patient tissue at a later second time wherein the patient has received at least some medical treatment by the second time. Step c) is labeled “Create An Image Of The Location Using The Two Signals” inblock276 of FIG. 27. Step c) includes creating an image of the location using the first signal and the second signal. It is understood that the terminology “creating an image” includes, without limitation, creating an image in visual form displayed, for example, on a monitor and creating an image in electronic form which, for example, is used by a computer without being displayed in visual form on a monitor. In one enablement of the twentieth method of the invention, the image of the location is visually displayed at a pixel location on a monitor.
• In one example of the twentieth method of the invention, step c) includes creating an image of the location using at least the amplitude of the first signal and the amplitude of the second signal. In one variation, step c) calculates the difference in the amplitudes between the first and second signals. In one modification, step c) uses the calculated amplitude difference and uses one of the amplitudes of one of the first and second signals. In one implementation, step c) calculates the sum of the one amplitude and a function of the calculated amplitude difference. In one illustration for a first signal amplitude of 6 and a second signal amplitude of 7, step c) calculates the amplitude difference, adds the difference to the second signal amplitude creating a processed amplitude of 8, and creates the image of the location using the processed amplitude. Other algorithms for using the amplitude of the first and second signals to enhance any amplitude difference in creating the image of the location after medical treatment are left to the artisan.[0137]
• In another example of the twentieth method of the invention, step c) includes creating an image of the location using at least the phase of the first signal and the phase of the second signal. In one variation, step c) calculates the difference in the phase between the first and second signals. In one modification, step c) uses the calculated phase difference and uses one of the phases of one of the first and second signals. In one implementation, step c) calculates the sum of the one phase and a function of the calculated phase difference. In one illustration of a first signal phase of 6 degrees and a second signal phase of 7 degrees, step c) calculates the phase difference, adds the difference to the second signal phase creating a processed phase of 8 degrees, and creates the image of the location using the processed phase. Other algorithms for using the phase of the first and second signals to enhance any phase difference in creating the image after medical treatment are left to the artisan.[0138]
• In an additional example of the twentieth method of the invention, step c) includes creating an image of the location using at least the amplitude and the phase of the first signal and the amplitude and phase of the second signal. In one variation step c) combines the discussions in the previous two paragraphs, as is within the ordinary level of skill of the artisan.[0139]
• In one application of the twentieth method and examples, etc. thereof, the first signal of step a) has a first frequency (e.g., a first center frequency having a sigma) and the second signal of step b) has a second frequency (e.g., a second center frequency having a sigma) which is different from the first frequency (meaning, for example, that the center frequencies are different). In the same or a different application, the medical treatment is ultrasound medical treatment. In the same or a different application, steps a) through c) are repeated for different locations to image the patient tissue, wherein the image of the patient tissue includes medically-treated locations and medically-untreated locations. In one enablement of the twentieth method of the invention, the image of the patient tissue is visually displayed on a monitor. In another enablement, the image remains as an image map in a computer without being displayed on a monitor. In one extension of the twentieth method, additional signals are obtained between steps a) and b) which are also used in creating the image of the location in step c).[0140]
• Applicants were the first to realize that changes in patient tissue because of medical treatment of patient tissue, such as ultrasound medical treatment, which affect the amplitude and/or phase of ultrasound imaging signals can be used to enhance the ultrasound image differences of medically-treated patient tissue from surrounding untreated tissue. Applicants have theorized that using different frequencies for the two signals can enhance amplitude and/or phase differences for medically treated and untreated tissue and can be used to enhance the ultrasound image differences of medically-treated patient tissue from surrounding untreated tissue. Advantages of the twentieth method and examples, etc. thereof include, in one application, better ultrasound image contrast between treated and untreated patient tissue providing better monitoring during patient treatment.[0141]
• Other medical treatments applicable to the twentieth method include, without limitation, other thermal ablation techniques such as radio-frequency, laser, and microwave medical treatments and chemical ablation techniques such as ethanol and chemo-therapeutics (including anti-cancer drugs). Other optional steps in the twentieth method include using signal smoothing techniques, as are known to those skilled in the art.[0142]
• It is understood that any one or more of the previously-described embodiments, expressions of embodiments, examples, methods, etc. can be combined with any one or more of the other previously-described embodiments, expressions of embodiments, examples, methods, etc. For example, and without limitation, any of the end effectors can be used in any of the methods, any of the transducer arrangements can be used in any of the end effectors, and any appropriate methods can be combined such as combining the seventeenth and twentieth methods, etc.[0143]
• The foregoing description of several expressions of embodiments and methods of the invention has been presented for purposes of illustration. It is not intended to be exhaustive or to limit the invention to the precise forms and procedures disclosed, and obviously many modifications and variations are possible in light of the above teaching. For example, as would be apparent to those skilled in the art, the disclosures herein of the ultrasonic systems and methods have equal application in robotic assisted surgery taking into account the obvious modifications of the invention to be compatible with such a robotic system. It is intended that the scope of the invention be defined by the claims appended hereto.[0144]

Claims (13)

What is claimed is:

1. A method for medical treatment of a patient comprising the steps of:

a) obtaining an ultrasound imaging transducer assembly;

b) inserting the transducer assembly into a gastrointestinal area of the patient;

c) guiding the transducer assembly within the gastrointestinal area;

d) identifying patient tissue in the gastrointestinal area for medical treatment;

e) staging the medical treatment from ultrasound imaging using the transducer assembly; and

f) medically treating the patient tissue according to the staging of step e).

2. A method for ultrasound medical treatment of a patient comprising the steps of:

a) obtaining an end effector having an ultrasound imaging and medical-treatment transducer assembly;

b) inserting the end effector into a gastrointestinal area of the patient;

c) guiding the transducer assembly within the gastrointestinal area;

d) identifying patient tissue in the gastrointestinal area for medical treatment;

e) staging the medical treatment from ultrasound imaging using the transducer assembly; and

f) medically treating the patient tissue with ultrasound using the transducer assembly according to the staging of step e).

3. The method ofclaim 2, wherein the patient tissue is gastroesophageal tissue containing a lesion, and wherein step e) ultrasonically substantially ablates the lesion.

4. The method ofclaim 3, wherein the gastroesophageal tissue contains a blood vessel supplying blood to the lesion, and wherein step e) ultrasonically treats the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel.

5. The method ofclaim 2, wherein the patient tissue is liver tissue containing a lesion and a blood vessel supplying blood to the lesion, and wherein step e) ultrasonically treats the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel.

6. The method ofclaim 2, wherein the patient tissue is liver tissue containing a lesion, and wherein step e) ultrasonically substantially ablates the lesion.

7. The method ofclaim 6, wherein the liver tissue contains a blood vessel supplying blood to the lesion, and wherein step e) ultrasonically treats the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel.

8. A method for ultrasound medical treatment of a patient comprising the steps of:

a) obtaining an end effector having an ultrasound imaging and medical-treatment transducer assembly;

b) inserting the end effector into a gastrointestinal area of the patient;

c) guiding the transducer assembly within the gastrointestinal area;

d) identifying patient tissue in the gastrointestinal area for medical treatment at least in part from ultrasound imaging using the transducer assembly;

e) staging the medical treatment from ultrasound imaging using the transducer assembly, and

f) medically treating the patient tissue with ultrasound using the transducer assembly according to the staging of step e).

9. The method ofclaim 8, wherein the patient tissue is gastroesophageal tissue containing a lesion, and wherein step f) ultrasonically substantially ablates the lesion.

10. The method ofclaim 8, wherein the gastroesophageal tissue contains a blood vessel supplying blood to the lesion, and wherein step f) ultrasonically treats the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel.

11. The method ofclaim 8, wherein the patient tissue is liver tissue containing a lesion and a blood vessel supplying blood to the lesion, and wherein step f) ultrasonically treats the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel.

12. The method ofclaim 8, wherein the patient tissue is liver tissue containing a lesion, and wherein step f) ultrasonically substantially ablates the lesion.

13. The method ofclaim 12, wherein the liver tissue contains a blood vessel supplying blood to the lesion, and wherein step f) ultrasonically treats the blood vessel to substantially stop the supply of blood to the lesion from the blood vessel.

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