Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art and provides a microwave ablation puncture orientation device which can rapidly define the ablation position, realize precise ablation, avoid damaging human tissues and improve the stability and reliability of operation.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides a microwave ablation puncture orientation device, includes endotheca, overcoat and puncture needle core, the overcoat cover is established the outside of endotheca, be equipped with first opening on the global of overcoat, be equipped with the second opening on the global of endotheca, the endotheca can rotate or along fore-and-aft direction removal for the overcoat, so that the second opening and first opening stagger completely or partly or coincide, the puncture needle core can stretch into or take out from the endotheca, when the puncture needle core takes out from the endotheca, the endotheca is used for placing the microwave ablation needle.
In combination with the above implementation manner, in some implementation manners of the present invention, a rotating handle is disposed at a rear end of the inner sleeve, and the rotating handle is provided with a first through hole communicated with the inner sleeve.
In combination with the above implementation manner, in some implementation manners of the present invention, a base is provided at a rear end of the outer sleeve, a protrusion is provided on the base, and the rotating handle of the inner sleeve is provided with a plurality of clamping grooves uniformly distributed along a circumferential direction, and the protrusion is matched with the clamping grooves.
In combination with the above implementation manner, in some implementation manners of the present invention, a second through hole is provided on the rotating handle, and an adjusting component is provided in the second through hole.
In combination with the above implementation manner, in some implementation manners of the present invention, the second through hole includes an inner screw hole, an outer screw is disposed at a front portion of the adjusting component, the adjusting component is matched with the inner screw hole through the outer screw, and a length scale line is disposed behind the outer screw by the adjusting component.
In combination with the above implementation manner, in some implementation manners of the present invention, a first angle scale line is disposed on an end surface of the base, which is close to the rotating handle, the first angle scale line is used for identifying a position of the first opening in a circumferential direction, and a second angle scale line is disposed on a rear end surface of the rotating handle, and the second angle scale line is used for identifying a position of the second opening in the circumferential direction.
In combination with the above implementation manners, in some implementation manners of the present invention, a projection of the first opening in a front-rear direction coincides with the first angle scale line, a projection of the second opening in the front-rear direction coincides with the second angle scale line, and a viewing window for viewing the first angle scale line is provided on the rotating handle.
In combination with the above implementation, in some implementations of the present invention, the front end of the outer sleeve is serrated.
In combination with the above implementation manner, in some implementations of the present invention, a front end of the puncture needle core is tapered, and a rear end of the puncture needle core is provided with a needle core handle.
In combination with the above implementation, in some implementations of the present invention, the inner surfaces of the inner and outer jackets are each provided with a microwave absorbing layer.
The technical scheme has at least one of the following advantages or beneficial effects that the microwave ablation puncture orientation device is inserted into a focus after percutaneous puncture by the puncture needle core, then the puncture needle core is pulled out of the inner sleeve, and the second opening and the first opening are completely staggered or partially staggered or overlapped through relative rotation or front-back movement between the inner sleeve and the outer sleeve. The size of the overlapping part of the second opening and the first opening is adjusted according to the size of the focus, so that the overlapping part is aligned with the focus, and the ablation position is rapidly defined. And then the microwave ablation needle stretches into the inner sleeve, so that a microwave emission source of the microwave ablation needle is positioned at a position where the first opening and the second opening coincide, and the focus can be subjected to directional ablation, thereby realizing accurate ablation, avoiding damage to human tissues and improving the stability and reliability of the operation.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
In the present invention, if directions (up, down, left, right, front and rear) are described, they are merely for convenience of description of the technical solution of the present invention, and do not indicate or imply that the technical features must be in a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, "a plurality of" means one or more, and "a plurality of" means two or more, and "greater than", "less than", "exceeding", etc. are understood to not include the present number, and "above", "below", "within", etc. are understood to include the present number. In the description of the present invention, the description of "first" and "second" if any is used solely for the purpose of distinguishing between technical features and not necessarily for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the present invention, unless explicitly defined otherwise, terms such as "providing," "mounting," "connecting," and the like should be construed broadly, and may, for example, be directly connected or indirectly connected through an intermediate medium, or may be fixedly connected or may be detachably connected or may be integrally formed, or may be mechanically connected or may be electrically connected or may be capable of communicating with each other, or may be internal to two elements or may be in interaction with each other. The specific meaning of the words in the invention can be reasonably determined by a person skilled in the art in combination with the specific content of the technical solution.
Referring to fig. 1 to 4, an embodiment of the present invention provides a microwave ablation puncture orientation device, which includes an inner sleeve 1, an outer sleeve 2 and a puncture needle core 3, wherein the outer sleeve 2 is sleeved outside the inner sleeve 1, a first opening 21 is provided on the circumferential surface of the outer sleeve 2, a second opening 11 is provided on the circumferential surface of the inner sleeve 1, and the inner sleeve 1 can rotate relative to the outer sleeve 2 or move in the front-back direction, so that the second opening 11 is completely staggered or partially staggered or overlapped with the first opening 21. The puncture needle core 3 can extend into or be pulled out of the inner sleeve 1, and when the puncture needle core 3 is pulled out of the inner sleeve 1, the inner sleeve 1 is used for placing the microwave ablation needle 4. Referring to fig. 8, when the first opening 21 and the second opening 11 are completely staggered, the microwave ablation needle 4 placed in the inner sheath 1 cannot emit microwaves to a lesion or a human tissue located outside the outer sheath 2, and referring to fig. 5, 6 and 9, when the first opening 21 and the second opening 11 are partially staggered or overlapped, the microwave ablation needle 4 placed in the inner sheath 1 can emit microwaves to a lesion or a human tissue located outside the outer sheath 2.
The microwave ablation puncture orientation device is inserted into a focus after percutaneous puncture by the puncture needle core 3, then the puncture needle core 3 is pulled out of the inner sleeve 1, and the second opening 11 and the first opening 21 are completely staggered or partially staggered or overlapped through relative rotation or back-and-forth movement between the inner sleeve 1 and the outer sleeve 2. The size of the overlapping portion of the second opening 11 and the first opening 21 is adjusted according to the size of the lesion so that the overlapping portion is aligned with the lesion, thereby rapidly defining the location of ablation. The microwave ablation needle 4 is extended into the inner sleeve 1, see fig. 5 and 6, so that the microwave emission source 41 of the microwave ablation needle 4 is positioned at the position where the first opening 21 and the second opening 11 coincide, and the focus can be subjected to directional ablation, thereby realizing precise ablation, avoiding damage to human tissues and improving the stability and reliability of the operation.
Referring to fig. 1 and 2, in some embodiments, a rotating handle 12 is provided at the rear end of the inner sleeve 1 to facilitate rotating the inner sleeve 1 to adjust the relative positions of the first opening 21 and the second opening 11 in the circumferential direction. The rotary handle 12 is provided with a first through hole 13 communicated with the inner sleeve 1, so that the puncture needle core 3 or the microwave ablation needle 4 extends into the inner sleeve 1 through the first through hole 13, and smooth work is ensured.
Referring to fig. 1, 3 and 7, in some embodiments, the rear end of the outer sleeve 2 is provided with a base 22, and the base 22 is provided with a communication hole 25 communicating with the outer sleeve 2, and the inner sleeve 1 protrudes into the outer sleeve 2 through the communication hole 25. The base 22 is provided with a bulge 23, the rotating handle 12 of the inner sleeve 1 is provided with a plurality of clamping grooves which are uniformly distributed along the circumferential direction, and the bulge 23 is matched with the clamping grooves. After the relative positions of the first opening 21 and the second opening 11 are adjusted, the inner sleeve 1 can be pushed forward to enable the protrusion 23 and the clamping groove to be clamped, so that circumferential limit is performed, and the phenomenon of relative rotation of the inner sleeve 1 and the outer sleeve 2 in the ablation process is prevented, so that the accuracy of ablation is ensured. It will be appreciated that the position locking of the inner sleeve 1 and the outer sleeve 2 may also be achieved by providing grooves in the base 22, protrusions in the rotatable handle 12, etc. The number of the clamping grooves can be set according to the accuracy requirement of ablation, and the magnitude of the single rotation angle is determined by the number of the clamping grooves. The higher the accuracy requirement, the greater the number of card slots provided.
Referring to fig. 1, 2, 5 and 6, in some embodiments, the rotating handle 12 is provided with a second through hole 14 disposed along a front-rear direction, the second through hole 14 is provided with an adjusting member 15, and the adjusting member 15 can move along the front-rear direction in the second through hole 14 to abut against the base 22, so as to adjust the distance between the inner sleeve 1 and the outer sleeve 2 along the front-rear direction, and further adjust the positional relationship between the first opening 21 and the second opening 11 along the front-rear direction, so as to accomplish the orientation purpose.
The adjusting member 15 may be a pin, a screw, or the like, and the second through hole 14 is formed as a light hole or a screw hole, respectively. Referring to fig. 2, 5 and 6, in some embodiments, the second through hole 14 includes an inner screw hole, and the front portion of the adjusting member 15 is provided with an outer screw, and the adjusting member 15 is engaged with the inner screw hole through the outer screw, so that the distance between the outer case 2 and the inner case 1 in the front-rear direction can be conveniently adjusted. The adjusting part 15 is provided with length graduation marks at the rear of the outer screw, so that the distance of the inner sleeve 1 moving backward relative to the outer sleeve 2 can be confirmed, and the adjusting part is convenient for a user to use, so that the orientation of the first opening 21 and the second opening 11 in the front-rear direction is more accurate.
Referring to fig. 1, after guiding the microwave ablation puncture positioning device into the focal zone by CT, the puncture needle core 3 is removed. By rotating the inner sleeve 1 and the outer sleeve 2, the overlapping part of the first opening 21 and the second opening 11 in the circumferential direction meets the size requirement of a focus to be ablated, and the inner sleeve 1 is pushed to move forward, so that the clamping groove is matched with the protrusion 23, and the inner sleeve 1 and the outer sleeve 2 are limited to relatively displace in the circumferential direction, as shown in fig. 7. The front-back distance between the inner sleeve 1 and the outer sleeve 2 is adjusted by the adjusting component 15, so that the superposition of the first opening 21 and the second opening 11 in the front-back direction meets the size requirement of a focus to be ablated, the inner sleeve 1 can move in the front-back direction under the driving of the adjusting component 15 and the guidance of the convex blocks, and the superposition of the first opening 21 and the second opening 11 in the front-back direction and the circumferential direction can be determined, so that the ablation position is rapidly defined. Referring to fig. 5 and 6, the microwave ablation needle 4 extends the microwave emission source 41 into the inner sleeve 1 along the inner sleeve 1, and when the microwave emission source 41 reaches the overlapping portion of the first opening 21 and the second opening 11, microwaves can be emitted, and accurate ablation can be performed, so that the purpose of killing cancerous tissues is achieved. Meanwhile, the damage to the healthy tissues of the human body is avoided, and the stability and the reliability of the operation are improved.
Referring to fig. 7, in some embodiments, the base 22 is provided with a first angle scale 24 on an end surface near the rotating handle 12, the first angle scale 24 is used to identify a position of the first opening 21 in the circumferential direction, and the rear end surface of the rotating handle 12 is provided with a second angle scale 15, and the second angle scale 15 is used to identify a position of the second opening 11 in the circumferential direction. By providing the first angle graduation marks 24 and the second angle graduation marks 15, the relative positions of the first opening 21 and the second opening 11 in the circumferential direction are conveniently confirmed.
The specific position of the first angle graduation mark 24 on the base 22 and the specific position of the second angle graduation mark 15 on the rotary handle 12 can be reasonably set according to the sizes of the base 22 and the rotary handle 12. Referring to fig. 7, in some embodiments, the projection of the first opening 21 in the front-rear direction coincides with the first angular graduation line 24, and the projection of the second opening 11 in the front-rear direction coincides with the second angular graduation line 15, so that the user can intuitively see the relative positions of the first angular graduation line 24 and the second angular graduation line 15 in the circumferential direction. The turning handle 12 is provided with an observation window for observing the first angle scale line 24, and the observation window is convenient for a user to observe the first angle scale line 24, namely confirm the position of the first opening 21 in the circumferential direction.
Referring to fig. 1 and 3, in some embodiments, the front end of the outer sleeve 2 is serrated, and when the microwave ablation puncture orientation device enters human bone tissue or other parts in a spiral advancing manner, the front end of the serrated outer sleeve 2 is beneficial to opening a channel, so that the microwave ablation puncture orientation device is convenient to enter human tissue.
Referring to fig. 1, the front end of the puncture needle core 3 is tapered, and the tapered front end can puncture the epidermis and extend into the bone or other tissues of the human body for slotting so as to reach the focus area. The rear end of the puncture needle core 3 is provided with a needle core handle 31 which is convenient for holding the puncture needle core 3.
When the microwave ablation needle 4 emits microwaves aiming at the superposition position of the first opening 21 and the second opening 11, the microwaves can influence the body of the inner sleeve 1 and the body of the outer sleeve 2 near the openings, so that the inner sleeve 1 and the outer sleeve 2 generate heating phenomena, and certain influence is caused on human healthy tissues. In some embodiments, the inner surfaces of the inner sleeve 1 and the outer sleeve 2 are provided with microwave absorbing layers, so that the phenomenon that microwaves penetrate through the inner sleeve 1 and the outer sleeve 2 to cause the inner sleeve 1 and the outer sleeve 2 to generate heat is avoided. The microwave absorbing layer can absorb the microwaves in the non-target direction well, so that the phenomenon that the healthy tissues of the human body, namely the non-target tissues generate heat is avoided, and the healthy tissues around the focus are prevented from being damaged. It is understood that the microwave absorbing layer may be made of microwave absorbing material such as lithium-cadmium ferrite, lithium-zinc ferrite, or ultrafine metal particles. Wherein, the inner sleeve 1 and the outer sleeve 2 can also be made of microwave absorbing materials.
In the description of the present specification, reference to the terms "example," "embodiment," or "some embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The present application is, of course, not limited to the above-described embodiments, and one skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the application, and these equivalent modifications or substitutions are intended to be included in the scope of the present application as defined in the appended claims.