CN112472279B

Movatterモバイル変換

Info

Publication number: CN112472279B
Application number: CN202011359322.7A
Authority: CN
Inventors: 李建雄; 鞠忠建; 吴璇; 冀天楠
Original assignee: Fifth Medical Center of PLA General Hospital
Current assignee: Fifth Medical Center of PLA General Hospital
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2022-03-01
Anticipated expiration: 2040-11-27
Also published as: CN112472279A

Abstract

Translated fromChinese

本发明提供了一种放疗辅助用肿瘤消融装置，属于医疗器械技术领域，包括管体、针头、消融针、驱动管以及控电组件，所述管体上设有与气泵连通的抽吸口；所述针头设于所述管体的前端，所述针头上设有多个通孔，多个所述通孔绕所述针头的轴线呈放射状分布；所述消融针滑动连接于所述管体内部，所述消融针的前端设有多个消融头，所述消融头分别与所述通孔滑动连接；所述驱动管套设于所述消融针的外周且与所述消融针滑动连接，所述驱动管与所述消融针导电接触，所述驱动管的前端设有呈螺旋状分布的切割片，所述切割片套设于所述消融针外周，且前端与所述针头固定连接。本发明提供的放疗辅助用肿瘤消融装置有利于病人的康复。

The invention provides a tumor ablation device for adjuvant radiotherapy, belonging to the technical field of medical devices, comprising a tube body, a needle, an ablation needle, a driving tube and an electrical control assembly, wherein the tube body is provided with a suction port communicated with an air pump; The needle is arranged at the front end of the tube body, the needle is provided with a plurality of through holes, and the plurality of through holes are radially distributed around the axis of the needle; the ablation needle is slidably connected to the tube body Inside, the front end of the ablation needle is provided with a plurality of ablation heads, and the ablation heads are respectively slidably connected with the through holes; the drive tube is sleeved on the outer periphery of the ablation needle and is slidably connected with the ablation needle, The driving tube is in conductive contact with the ablation needle, and the front end of the driving tube is provided with a cutting blade distributed in a spiral shape, the cutting blade is sleeved on the outer periphery of the ablation needle, and the front end is fixedly connected with the needle head. The tumor ablation device for adjuvant radiotherapy provided by the invention is beneficial to the recovery of the patient.

Description

Tumor ablation device for assisting radiotherapy

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a tumor ablation device for assisting radiotherapy.

Background

Tumor radiotherapy is a local treatment for tumors using radiation. The radiation includes alpha, beta and gamma rays generated by radioactive isotopes, and x-rays, electron beams, proton beams and other particle beams generated by various x-ray therapeutic machines or accelerators. About 70% of cancer patients require radiation therapy in the course of cancer treatment, and about 40% of cancers can be cured by radiation therapy. The role and position of radiotherapy in tumor treatment are increasingly prominent, and the radiotherapy has become one of the main means for treating malignant tumors.

The existing tumor radiotherapy has shallow action area for tumor tissues with larger diameters, has unobvious effect on tumor cells at the central position of the tumor tissues, the tumor cells after radiotherapy are left in a patient body and can only be naturally absorbed by the human body, and the tumor tissues can still press other organs in the body, so that the normal work of other organs is influenced, and the rehabilitation of the patient is influenced.

Disclosure of Invention

The invention aims to provide a tumor ablation device for assisting radiotherapy, and aims to solve the technical problems that the existing radiotherapy is not thorough, and tumor tissues are retained in vivo to influence the recovery of a patient.

In order to achieve the purpose, the invention adopts the technical scheme that: provided is a radiotherapy-assisted tumor ablation device, including:

the tube body is provided with a suction port communicated with the air pump;

the needle head is arranged at the front end of the tube body, a plurality of through holes are formed in the needle head, and the through holes are radially distributed around the axis of the needle head;

the ablation needle is connected inside the tube body in a sliding mode, a plurality of ablation heads are arranged at the front end of the ablation needle, and the ablation heads are respectively connected with the through holes in a sliding mode;

the driving tube is sleeved on the periphery of the ablation needle and is in sliding connection with the ablation needle, the driving tube is in conductive contact with the ablation needle, cutting sheets which are distributed in a spiral shape are arranged at the front end of the driving tube, the cutting sheets are sleeved on the periphery of the ablation needle, and the front end of the cutting sheets is fixedly connected with the needle head; and

and the electric control assembly is used for being in conductive contact with the driving tube so as to electrify the ablation needle.

As another embodiment of the application, two first bulges are convexly arranged on the periphery of the rear end of the ablation needle, and the two first bulges are symmetrically arranged on two sides of the ablation needle;

the rear end of driving tube is equipped with two and winds driving tube axis symmetric distribution's arc piece, every be equipped with on the arc piece respectively one be used for with the draw-in groove of first protruding joint, the opening direction perpendicular to of draw-in groove the axis of driving tube.

As another embodiment of the present application, the pipe body includes:

the rear end pipe is provided with the electricity control assembly; and

the front end tube is detachably connected to the front end of the rear end tube and is used for being inserted into the cortex, and the needle head is arranged at the front end of the front end tube;

the inner side of the front end of the rear end pipe is provided with a plurality of strip-shaped grooves, each groove is arranged in parallel to the axis of the rear end pipe, and the width of each groove is gradually reduced from front to back; the rear end of the front end pipe is provided with a plurality of second bulges which are respectively spliced with the grooves.

As another embodiment of the present application, the electric control assembly includes:

one end of the sensing strip is rotatably connected with the inner wall of the rear-end pipe, and the sensing strip is used for being in conductive connection with an external power supply;

the spanner is fixedly arranged at the other end of the sensor strip and is an insulating component; and

the positioning block is arranged on the outer side of the rear end pipe, a slide way communicated with the rear end pipe is arranged on the positioning block, and a long shaft of the slide way is positioned on the radial surface of the rear end pipe;

the spanner stretches out the slide, the lateral wall of slide still is equipped with the first constant head tank and the second constant head tank that are used for holding the spanner, first constant head tank with the second constant head tank is followed the major axis direction of slide distributes.

As another embodiment of the present application, the radiotherapy-assisted tumor ablation apparatus further includes:

and the positioning assembly is sleeved on the periphery of the tube body and used for being placed on the skin of a patient and fixing the tube body.

As another embodiment of the present application, the positioning assembly includes:

the bottom support ring is used for being fixed on the outer side of the skin of a human body;

the bottom of the telescopic assembly is connected with the bottom support ring;

the top support ring is arranged at the top of the telescopic assembly, and an annular sliding groove is formed in the inner side of the top support ring;

the two arc-shaped rods are arranged, two ends of each arc-shaped rod are respectively provided with a sliding block which is used for being in sliding connection with the sliding groove, and the arc-shaped rods are in rotating connection with the sliding blocks; and

and the clamping block is used for connecting the two arc-shaped rods so as to clamp and fix the pipe body.

As another embodiment of this application, the fixture block includes two cardboards, two one side of cardboard is rotated and is connected, and the cooperation of opposite side joint, two the cardboard is used for two the outside of arc pole is pressed from both sides tightly two the arc pole.

As another embodiment of the present application, the telescopic assembly includes:

the air bag ring is respectively connected with the top support ring and the bottom support ring, and the inner cavity of the air bag ring is communicated with an air source; and

and one end of the telescopic rod is fixed with the bottom supporting ring, and the other end of the telescopic rod is fixed with the top supporting ring.

As another embodiment of this application, the outside of suction opening is connected with the tubular metal resonator, be equipped with the fixed axle in the tubular metal resonator, the fixed axle with the tubular metal resonator coaxial arrangement, the inner of fixed axle extends to suction opening department, the inner rotation of fixed axle is connected with the cutting knife.

As another embodiment of the application, a plurality of blades are arranged on the cutting knife, and one side of each blade is bent towards the suction opening.

The tumor ablation device for assisting radiotherapy provided by the invention has the beneficial effects that: compared with the prior art, the tumor ablation device for assisting radiotherapy is used for further removing tumor tissues after radiotherapy is carried out on a patient, firstly, the electricity control component is connected with an external power supply, the front end of the tube body is inserted into the patient until the tumor position is reached, the driving tube is fixed at the moment and pushes the ablation needle to enable the ablation head at the front end of the ablation needle to protrude out of the needle head and to be in contact with the tumor tissues, the electricity control component is in contact with the driving tube, the driving tube is in conductive connection with the ablation needle to enable the ablation needle to be electrified, radio frequency current is released through the ablation head at the front end of the ablation needle to act on the tumor, after the tumor is completely destroyed after a period of time, the electricity control component is separated from the driving tube, the connection between the electricity control component and the external power supply is disconnected, the driving tube is pushed to enable the needle head to be separated from the tube body, an opening structure is formed, and the cutting blade is exposed at the tumor tissues, the driving tube is rotated, so that the cutting blade at the front end of the driving tube rotates to cut and crush the inactivated tumor tissue, and drives the crushed tumor tissue to enter the tube body and move to the suction opening, and the crushed tumor tissue is washed out by the air pump after reaching the suction opening. The radiotherapy-assisted tumor ablation device can change the extending length of the ablation head by pushing the distance of the ablation needle, so that the device acts on the central positions of tumors with different sizes and volumes, and cells at the central positions of the tumors which cannot be acted by radiotherapy are inactivated; the radially distributed ablation heads can enlarge the tumor area acted by the radio frequency current and improve the ablation efficiency of the tumor; the cutting piece is used for cutting the tumor in the rotating process, and simultaneously plays a role in guiding the inactivated tumor tissue, thereby being beneficial to the derivation of tumor cells, enabling other organs to work normally and being beneficial to the rehabilitation of patients.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view illustrating a usage status of a radiotherapy-assisted tumor ablation apparatus according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

fig. 3 is a schematic view illustrating a second usage state of the radiotherapy-assisted tumor ablation apparatus according to the first embodiment of the present invention;

fig. 4 is a schematic view illustrating a usage state of the radiotherapy-assisted tumor ablation apparatus according to the second embodiment of the present invention;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

FIG. 6 is a schematic top view of the structure of FIG. 5;

fig. 7 is a schematic view illustrating a second usage state of the radiotherapy-assisted tumor ablation apparatus according to the second embodiment of the present invention;

fig. 8 is a schematic perspective view of a tube according to an embodiment of the present invention;

FIG. 9 is a schematic perspective view of a rotary tube according to an embodiment of the present invention;

FIG. 10 is a schematic perspective view of a positioning assembly according to an embodiment of the present invention;

FIG. 11 is a schematic front view of a positioning assembly according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of a right-view structure of a positioning assembly according to an embodiment of the present invention;

fig. 13 is a schematic cross-sectional view of a fixture block according to an embodiment of the present invention;

fig. 14 is a schematic perspective view of a cutting knife according to an embodiment of the present invention;

fig. 15 is a schematic perspective view of a cutting knife according to a second embodiment of the present invention.

In the figure: 1. a pipe body; 101. a front end tube; 102. a rear end tube; 2. a needle head; 3. an ablation needle; 4. a drive tube; 5. an electricity control assembly; 501. a sensor strip; 502. a wrench; 503. positioning blocks; 6. an ablation head; 7. cutting the slices; 8. a suction port; 9. a first protrusion; 10. a card slot; 11. a groove; 12. a second protrusion; 13. a positioning assembly; 131. a bottom support ring; 132. a telescoping assembly; 132-1, an airbag ring; 132-2, a telescopic rod; 133. a top support ring; 134. an arcuate bar; 135. buckling; 135-1 and a clamping plate; 135-2, an elastic member; 135-3, and a buckle; 14. a chute; 15. a slider; 16. a blade; 17. an air cavity; 18. a metal tube; 19. a fixed shaft; 20. a cutting knife; 21. a slideway; 22. a first positioning groove; 23. a second positioning groove.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 7, a tumor ablation apparatus for assisting radiotherapy according to the present invention will now be described. The tumor ablation device for assisting radiotherapy comprises a tube body 1, a needle head 2, an ablation needle 3, a driving tube 4 and an electric control assembly 5, wherein a suction port 8 communicated with an air pump is formed in the tube body 1; the needle head 2 is arranged at the front end of the tube body 1, a plurality of through holes are arranged on the needle head 2, and the through holes are radially distributed around the axis of the needle head 2; the ablation needle 3 is connected inside the tube body 1 in a sliding manner, a plurality of ablation heads 6 are arranged at the front end of the ablation needle 3, and the ablation heads 6 are respectively connected with the through holes in a sliding manner; the driving tube 4 is sleeved on the periphery of the ablation needle 3 and is in sliding connection with the ablation needle 3, the driving tube 4 is in conductive contact with the ablation needle 3, the cutting blades 7 which are distributed spirally are arranged at the front end of the driving tube 4, the cutting blades 7 are sleeved on the periphery of the ablation needle 3, and the front end of the cutting blades is fixedly connected with the needle head 2; the electric control component 5 is used for being in conductive contact with the driving tube 4 so as to electrify the ablation needle 3.

The tumor ablation device for assisting radiotherapy is used for further removing tumor tissues after radiotherapy is carried out on a patient, and the using process comprises the following steps:

firstly, an electricity control assembly 5 is connected with an external power supply, the front end of a tube body 1 is inserted into a patient body until reaching a tumor position, at the moment, a driving tube 4 is fixed and fixed, an ablation needle 3 is pushed, an ablation head 6 at the front end of the ablation needle 3 protrudes out of a needle head 2 and is contacted with tumor tissue, the driving tube 4 is contacted with the driving tube 4 through the electricity control assembly 5, the driving tube 4 is in conductive connection with the ablation needle 3, the ablation needle 3 is electrified, radio frequency current is released through the ablation head 6 at the front end of the ablation needle 3 to act on the tumor, after a period of time, the tumor is completely destroyed, the electricity control assembly 5 is separated from the driving tube 4, the connection between the electricity control assembly 5 and the external power supply is disconnected, the driving tube 4 is pushed, the needle head 2 is separated from the tube body 1, an opening structure is formed, at the moment, a cutting piece 7 is exposed at the tumor tissue, the driving tube 4 is rotated, the cutting piece 7 at the front end of the driving tube 4 is rotated to cut and crush the inactivated tumor tissue, and the crushed tumor tissue is driven to enter the tube body 1 to move towards the suction port 8, and is washed out by the air pump after reaching the suction port 8.

Compared with the prior art, the radiotherapy-assisted tumor ablation device provided by the invention has the advantages that the extending length of theablation head 6 can be changed by pushing the distance of theablation needle 3, so that the device acts on the central positions of tumors with different sizes, and cells at the central positions of the tumors which cannot be acted by radiotherapy are inactivated; the radially distributed ablation heads 6 can enlarge the tumor area acted by the radio frequency current and improve the ablation efficiency of the tumor; thecutting blade 7 also plays a role in guiding the flow of the inactivated tumor tissues while cutting the tumor in the rotating process, thereby being beneficial to the derivation of tumor cells, enabling other organs to work normally and being beneficial to the rehabilitation of patients.

It is to be noted that the front end is the end close to theneedle 2 and the rear end is the end far from theneedle 2, which are the same as the front and rear ends described hereinafter.

Wherein the rotation ofdrive tube 4 passes through motor drive, and specific drive process is: when the drivingtube 4 needs to be controlled to rotate, the output shaft of the motor is fixedly connected with the rear end of the drivingtube 4 or connected through a transmission structure similar to a gear, and the rotation of the drivingtube 4 is realized by starting the motor; when the drivingpipe 4 needs to be controlled to stop rotating, the motor is shut down.

Specifically, not shown in the figure, in order to ensure that the drivingtube 4 and theablation needle 3 can effectively conduct electricity while having a rotation allowance, a mounting ring groove is arranged on the inner wall of the drivingtube 4, and a metal conductive spring coil is arranged in the mounting ring groove and elastically contacts with theablation needle 3 through elastic force.

As a specific embodiment of the tumor ablation device for assisting radiotherapy provided by the present invention, please refer to fig. 1, fig. 3, fig. 4, fig. 7 and fig. 9, twofirst protrusions 9 are convexly disposed on the periphery of the rear end of theablation needle 3, and the twofirst protrusions 9 are symmetrically disposed on two sides of theablation needle 3; the rear end of the drivingtube 4 is provided with two arc-shaped sheets which are symmetrically distributed around the axis of the drivingtube 4, each arc-shaped sheet is provided with a clampinggroove 10 which is used for being clamped with thefirst bulge 9, and the opening direction of each clampinggroove 10 is perpendicular to the axis of the drivingtube 4. Firstly, the electricity control assembly 5 is in conductive connection with an external power supply, the needle head 2 is inserted into a body to reach a tumor tissue, at the moment, the first protrusion 9 and the clamping groove 10 are in a non-clamping state, relative sliding between the ablation needle 3 and the driving tube 4 can be realized, the driving tube 4 is fixed relative to the tube body 1, the ablation needle 3 is pushed, and as the cutting blade 7 at the front end of the driving tube 4 is fixed with the needle head 2, the needle head 2 and the tube body 1 are in a contact state when the driving tube 4 is fixed, the needle head 2 seals the front end of the tube body 1, only the ablation head 6 penetrates through the through hole and protrudes out of the periphery of the needle head 2, the ablation head 6 is controlled by the electricity control assembly 5 to be connected to release radio-frequency current to a tumor, and necrosis of tumor cells is realized; after the tumor cells are completely destroyed, the electric connection between the electric control component 5 and the ablation needle 3 is disconnected, the electric control component 5 is disconnected with an external power supply, at the moment, the ablation needle 3 does not move to push the driving tube 4, the driving tube 4 drives the cutting blade 7 to push the needle 2, the needle 2 is separated from the tube body 1 to open the front end of the tube body 1, the cutting blade 7 is exposed in the inactivated tumor tissue, the ablation head 6 retracts into the needle 2 when the driving tube 4 and the ablation head 6 are in relative position, at the moment, the position of the first bulge 9 just corresponds to the clamping groove 10, the ablation needle 3 is rotated to clamp the first bulge 9 with the clamping groove 10, the driving tube 4 and the ablation needle 3 are fixed, at the moment, the driving tube 4 and the ablation needle 3 rotate integrally, the cutting blade 7 rotates to drive the inactivated tumor tissue near the needle 2 to be crushed and reach the suction port 8 to be sucked away by the air pump through the guiding function of the cutting blade 7, and the inactivated tumor tissue is cleaned, the inactivated tumor tissue is prevented from still pressing nerves, and the rehabilitation of patients is facilitated.

As another embodiment, two lockinggrooves 10 are formed on the arc-shaped piece along the axis of theablation needle 3, and a state when thefirst protrusion 9 is locked with one locking groove 10 (see fig. 1 and 3) is as follows: theablation head 6 does not protrude out of theneedle head 2, and the drivingtube 4 and theablation needle 3 are relatively fixed; the second state (please refer to fig. 4 and 7) when thefirst protrusion 9 is engaged with theother slot 10 is: theablation head 6 protrudes out of theneedle head 2, and the drivingtube 4 and theablation needle 3 are relatively fixed. The first state is used as described above; the process that the second state made tumor cell deactivation throughmelting head 6 is the same with the aforesaid, and the difference is that after tumor cell deactivation,melting head 6 still protrudes insyringe needle 2, and drivetube 4 andablation needle 3 synchronous revolution this moment, protrudingmelting head 6 are favorable to smashing the tumor cell of necrosis, and the rotation of cuttingpiece 7 will smash the deactivation tumor tissue after leading into in body 1 and take out, improves the clearance efficiency to the tumor tissue of deactivation.

As one embodiment of the tumor ablation device for assisting radiotherapy provided by the present invention, please refer to fig. 1, fig. 3, fig. 4, fig. 7 and fig. 8, the tube body 1 includes arear tube 102 and afront tube 101, and the power control assembly 5 is mounted on therear tube 102; thefront end tube 101 is detachably arranged at the front end of therear end tube 102 and is used for being inserted into the cortex, and theneedle head 2 is connected to the front end of thefront end tube 101; a plurality of strip-shapedgrooves 11 are formed in the inner side of the front end of therear end pipe 102, eachgroove 11 is parallel to the axis of therear end pipe 102, and the width of eachgroove 11 is gradually reduced from front to back; the rear end of thefront end pipe 101 is provided with a plurality ofsecond protrusions 12 which are respectively inserted into thegrooves 11. The width of thesecond protrusion 12 is smaller than the width of the widest part of thegroove 11 and larger than the width of the narrowest part of thegroove 11, when the front-end pipe 101 and the rear-end pipe 102 are connected, thesecond protrusion 12 on the front-end pipe 101 corresponds to the position of thegroove 11 on the rear-end pipe 102, then the front-end pipe 101 is pushed until thesecond protrusion 12 is clamped in thegroove 11 and can not be pushed to be plugged, and the rear-end pipe 102 is inconvenient to frequently replace due to the complex structure and the basic position outside a human body; however, thefront tube 101 may be easily damaged because it is inserted below the skin, and it is impossible to use the same tube for different patients, and the tube body 1 of this structure makes thefront tube 101 easily replaceable, and therear tube 102 can be used corresponding to a plurality offront tubes 101, thereby reducing the treatment cost.

As a specific embodiment of the tumor ablation device for assisting radiotherapy provided by the present invention, please refer to fig. 1 to 7, the electric control assembly 5 includes asensing bar 501, awrench 502 and apositioning block 503, one end of thesensing bar 501 is rotatably connected to the inner wall of therear tube 102, and thesensing bar 501 is used for electrically connecting with an external power supply; thewrench 502 is fixedly arranged at the other end of thesensor bar 501 and is an insulating member; thepositioning block 503 is arranged on the outer side of therear end pipe 102, aslideway 21 communicated with therear end pipe 102 is arranged on thepositioning block 503, and the long axis of theslideway 21 is positioned on the radial surface of therear end pipe 102; thewrench 502 extends out of theslide way 21, the side wall of theslide way 21 is further provided with a first positioning groove 22 and asecond positioning groove 23 for accommodating thewrench 502, and the first positioning groove 22 and thesecond positioning groove 23 are distributed along the long axis direction of theslide way 21.

When the wrench 502 is located in the first positioning groove 22, the sensing bar 501 is not in contact with the driving pipe 4, and the wrench 502 can be clamped by the first positioning groove 22 to prevent the wrench 502 from shaking; after the ablation head 6 extends out of the needle head 2, the power needs to be supplied to enable the ablation head 6 to release radio frequency current, at this time, the wrench 502 is wrenched into the slide way 21 from the first positioning groove 22 and slides to the position of the second positioning groove 23, in the process, the wrench 502 drives the sensing strip 501 to move towards the position close to the driving tube 4 until the sensing strip 501 contacts the driving tube 4, the wrench 502 is pushed to be clamped in the second positioning groove 23, the sensing strip 501 is communicated with an external circuit, at this time, the sensing strip 501 is electrically connected with the driving tube 4, and as the driving tube 4 is in conductive contact with the ablation needle 3, the protruded ablation head 6 can send the radio frequency current to tumor cells to achieve necrosis of the tumor cells; when power is needed to be cut off, the sensing strip 501 is firstly cut off from an external power supply, and then the wrench 502 is wrenched from the second positioning groove 23 to the first positioning groove 22 through the reverse process; it is worth to be noted that the driving tube 4 is in a non-energized state during the rotation process, so as to prevent the normal cell activity from being affected by the continuous energization after the tumor cells are inactivated. The structure is convenient to switch the electrifying state of theablation needle 3, so as to adapt to different working environments and meet medical requirements.

As a specific embodiment of the tumor ablation device for assisting radiotherapy provided by the present invention, please refer to fig. 10 to 12, the tumor ablation device for assisting radiotherapy further includes apositioning component 13, and thepositioning component 13 is sleeved on the periphery of the tube body 1 and is used for placing on the skin of the patient and fixing the tube body 1. The process of inactivating the tumor cells by theablation head 6 requires a certain time, and the labor intensity of medical staff is increased if the medical staff always supports the tumor cells by hands in the time; can fix body 1 and place in the human outside through locatingcomponent 13, medical personnel at this moment only need through medical image watch the necrotic state of tumour can, reduce medical personnel's intensity for the operation process is lighter.

As an embodiment of the tumor ablation device for assisting radiotherapy provided by the present invention, please refer to fig. 10 to 12, thepositioning assembly 13 includes abottom support ring 131, atelescopic assembly 132, atop support ring 133, an arc-shapedrod 134 and a fixture block, thebottom support ring 131 is used for being fixed on the outer side of the skin of the human body; the bottom of thetelescopic assembly 132 is connected with thebottom support ring 131; the top supportingring 133 is arranged at the top of thetelescopic assembly 132, and the inner side of the top supportingring 133 is provided with an annular slidingchute 14; the number of the arc-shapedrods 134 is two, two ends of each arc-shapedrod 134 are respectively provided with a slidingblock 15 which is used for being in sliding connection with the slidingchute 14, and the arc-shapedrods 134 are rotatably connected with the slidingblocks 15; the clamping block is used for connecting the twoarc rods 134, so that the twoarc rods 134 clamp and fix the tube body 1.

Thebottom support ring 131 is sleeved on the periphery of the tube body 1 and fixed on the skin of a person, the height of thetop support ring 133 is adjusted through thetelescopic assembly 132 and is positioned between the two arc-shapedrods 134, and thetelescopic assembly 132 enables the height of the position for fixing the tube body 1 to be adjustable; the position of slidingblock 15 inspout 14 adjustsarc pole 134, then rotates the arc and presss from both sides two arc grillages in body 1 periphery to it is fixed through the fixture block, realize fixing body 1. This structure is convenient fixes the co-altitude not of body 1, through the centre gripping of two arcs to body 1, no matter what angle body 1 is in can be pressed from both sides in the centre by twoarc poles 134, and application scope is wide and convenient the regulation.

In this embodiment, thebottom support ring 131 can be sucked on the skin of the human body by a small suction cup, or can be adhered by a medical adhesive tape.

As a specific embodiment of the tumor ablation device for assisting radiotherapy provided by the present invention, please refer to fig. 13, the clamping block includes two clamping plates 135-1, one side of the two clamping plates 135-1 is rotatably connected, the other side is in clamping fit, and the two clamping plates 135-1 are used for clamping the two arc-shapedrods 134 at the outer sides of the two arc-shapedrods 134. Preferably, the other ends of the two clamping plates 135-1 are provided with buckles 135-3135 for enabling the two clamping plates 135-1 to clamp the two arc-shapedrods 134 at the outer sides of the arc-shaped plates; after thearc rod 134 is adjusted to contact the periphery of the tube body 1, the two clamping blocks are clamped on thearc rod 134 and located on two sides of the tube body 1 respectively, a clamping space for fixing the tube body 1 is formed between the two clamping blocks and the twoarc rods 134, and stability of the tube body 1 during fixing is improved conveniently.

In this embodiment, the inner side of the clamping plate 135-1 is provided with an elastic member 135-2, the elastic member 135-2 is preferably a rubber block, and the rubber block is extruded when the clamping plate 135-1 is clamped, so that the two arc-shapedrods 134 can be stably fixed through the elasticity of the rubber block, and the rubber block has a certain contraction range and can be suitable for clamping arc-shapedrods 134 with various diameters; the buckle 135-3135 is a spring plate protruding from the edge of the upper clamping plate 135-1, the side surface of the lower clamping plate 135-1 is provided with a fixing hole for clamping with the spring plate, and the upper and lower clamping plates 135-1 can be opened and closed by clamping the spring plate in the fixing hole.

Referring to fig. 10 to 12, thetelescopic assembly 132 includes an air bag ring 132-1 and a telescopic rod 132-2, the air bag ring 132-1 is respectively connected to thetop support ring 133 and thebottom support ring 131, and an inner cavity of the air bag ring 132-1 is communicated with an air source; the telescoping rod 132-2 is secured at one end to thebottom support ring 131 and at the other end to thetop support ring 133. The air source inflates the air bag ring 132-1, the telescopic rod 132-2 extends synchronously until the height is adjusted to be proper, and the telescopic rod 132-2 is adjusted in a telescopic mode to ensure the stability of thetop support ring 133; the height of thetop support ring 133 is adjusted through the air bag ring 132-1, so that adjustment is facilitated, the weight of the whole device can be reduced, and the applicable comfort level is increased.

In this embodiment, cold air or hot air can be filled into the airbag ring 132-1 according to the environmental requirements, for example, in a cold weather, the device itself is relatively cool, and warmer air can be filled into the airbag ring 132-1; in hot weather conditions, cooler air may be introduced into bladder loop 132-1 to reduce dryness heat. The patient can be ensured to be in a more comfortable state in the treatment process by adjusting the temperature of the introduced gas.

As a specific embodiment of the radiotherapy-assisted tumor ablation apparatus provided by the present invention, referring to fig. 11 to 12, a plurality ofair cavities 17 are provided in the air bag ring 132-1 along the axial direction of thetop support ring 133, and the plurality ofair cavities 17 are communicated with each other; or, a plurality ofair cavities 17 are arranged separately, and eachair cavity 17 is respectively communicated with an air source. When a plurality ofair cavities 17 are communicated, thewhole air cavity 17 only needs to be ventilated through an air source, and the height of thetop support ring 133 can be changed according to the amount of air introduced into theair cavity 17; when theair chambers 17 are arranged in a mutually separated manner, eachair chamber 17 is independently communicated with the air source, eachair chamber 17 corresponds to one adjusting valve for opening and closing the inflation inlet, the height of thetop support ring 133 can be adjusted by independently inflating one ormore air chambers 17, at the moment, eachair chamber 17 is in a full state when inflated, the more the number of the filledair chambers 17 is, the higher the correspondingtop support ring 133 is, and theair chambers 17 are always in the full state, so that the stability of the whole structure is ensured; can also be full of twoair cavities 17 that the interval set up, increase the flexibility of altitude mixture control process, and structure easy operation reduces medical personnel's intensity of labour.

Referring to fig. 1, 3, 4 and 7, ametal tube 18 is connected to an outer side of thesuction opening 8, a fixingshaft 19 is disposed in themetal tube 18, the fixingshaft 19 is coaxial with themetal tube 18, an inner end of the fixingshaft 19 extends to thesuction opening 8, and an inner end of the fixingshaft 19 is rotatably connected to a cuttingknife 20. Preferably, 19 inside motors that are equipped with of fixed axle, the fuselage of motor and 19 inside fixed of fixed axle, the output shaft and the cuttingknife 20 of motor are fixed, through switch motor,control cutting knife 20's rotation and stop, cuttingblade 7 leads the tumour tissue of deactivation to the position back of sucking 8 departments, cuttingknife 20's rotation is smashed it again, prevent that cell tissue from blockking up intubular metal resonator 18, smash the mobility that improves the tissue after through the tumour tissue with the deactivation, help taking out of air pump, the efficiency of taking out of the tumour tissue of improvement to the deactivation is improved.

Referring to fig. 14, a plurality ofblades 16 are provided on a cuttingknife 20, and one side of eachblade 16 is bent toward thesuction opening 8. Preferably, the distribution of theblades 16 on the fixedshaft 19 is similar to the distribution of the blades on a windmill; through the suction of air pump, lead to the air current of suction opening department to the external world flow for the air current promotes theblade 16 rotatory through the bending depressed part ofblade 16, realizes the cutting to the tumour tissue of deactivation, can need not set up the motor in fixedaxle 19 inside, prevents the electric leakage, has reduced manufacturing cost.

As another example, referring to FIG. 15, thecutting blade 20 includes a fixed member and a plurality ofannular blades 16 disposed around the fixed member. The fixing piece is of a filter screen structure, and the inactivated tumor tissue reaching the position of the cuttingknife 20 through thesuction port 8 passes through the cuttingknife 20 under the action of air flow by sucking at the outer end of the cuttingknife 20 through the air pump, and is broken under the double actions of theblade 16 and the fixing piece, so that the blockage in themetal tube 18 is prevented; specifically, the cuttingknife 20 of this structure cooperates the motor result of use better.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.