A shock ablation device

Abstract

The present invention discloses an impact ablation device, comprising an impact unit arranged at the proximal end and an ablation unit arranged at the distal end; the impact unit comprises a driving assembly, an impact seat, an elastic impact assembly, a limit seat and a first reset elastic member, and the limit seat is arranged on the side of the impact seat facing the distal end; the driving assembly is intermittently driven and connected to the impact seat; one end of the elastic impact assembly abuts against the impact seat, and a matching part is provided on the elastic impact assembly, and a limiting part corresponding to the matching part is provided on the limiting seat, and the limiting part cooperates with the matching part to limit the elastic impact assembly; a guide release part corresponding to the matching part is provided on the impact seat, and the guide release part can drive the matching part to rotate to release the limiting cooperation with the limiting part, and the elastic impact assembly releases elastic energy to move toward the distal end to impact the ablation unit; the first reset elastic member is arranged between the elastic impact assembly and the limit seat, and when the elastic impact assembly moves toward the distal end, it drives the first reset elastic member to compress and store energy.

Description

Technical Field

[0001] The present invention belongs to the technical field of ablation, and in particular relates to an impact ablation device. Background Art

[0002] In the field of female reproductive health, uterine fibroids, as a common benign tumor, have always been the focus of medical attention. Although traditional treatments such as surgery, drug therapy and interventional therapy have alleviated patients' symptoms to a certain extent, these methods all have significant limitations. Surgical treatment is often accompanied by greater trauma and a longer recovery time, and may affect the patient's fertility due to hysterectomy; drug therapy is mostly limited to relieving symptoms and is difficult to achieve a radical cure; interventional therapy requires a high level of technical skills from doctors and has the risk of recurrence.

[0003] In particular, when uterine fibroids develop to a certain stage, they may be accompanied by the formation of uterine calcification foci, which is caused by calcium salt deposition in the uterine myometrium due to pathological processes such as uterine fibroids, adenomyosis or endometritis. The presence of such calcification foci not only increases the difficulty of treatment, but also causes long-term troubles to patients because they are not easily removed by traditional treatment methods.

[0004] In recent years, with the continuous advancement of medical device technology, minimally invasive treatment technology for uterine fibroids has developed rapidly. For example, the manual uterine fibroid rotary cutter disclosed in the CN216495528U utility model realizes flexible control and accurate operation during the operation through sophisticated mechanical design, significantly improving the safety and reliability of the operation. However, the rotary cutter mainly focuses on the rotary cutting of uterine fibroid tissue, and does not provide a direct and effective solution to the accompanying calcification problem.

[0005] In view of the above background, there is an urgent need for an innovative treatment tool that can simultaneously address uterine fibroids and their accompanying calcifications, thereby achieving comprehensive treatment of uterine fibroids and their complications. Such a device will be able to further reduce surgical trauma, shorten recovery time, improve treatment efficacy, and reduce the risk of recurrence, providing a safer and more effective treatment option for patients with uterine fibroids. Summary of the invention

[0006] To solve the above problems, the object of the present invention is to provide an impact ablation device, which can perform both ablation and impact to eliminate calcification.

[0007] To achieve the above object, the technical solution of the present invention is:

[0008] An impact ablation device, comprising an impact unit arranged at a proximal end and an ablation unit arranged at a distal end, wherein the impact unit is used to impact the ablation unit, and the ablation unit is used to ablate and / or impact a target tissue; the impact unit comprises a driving assembly, an impact seat, an elastic impact assembly, a limit seat and a first resetting elastic member, wherein the limit seat is arranged on a side of the impact seat facing the distal end;

[0009] The driving assembly is intermittently connected to the impact seat, the driving assembly drives the impact seat to move toward the far end to a preset stroke and then disconnects the driving connection with the impact seat, and the driving assembly is reconnected to the impact seat after the impact seat is reset;

[0010] One end of the elastic impact component is in contact with the impact seat, a matching portion is provided on the elastic impact component, and a limiting portion corresponding to the matching portion is provided on the limiting seat, and the limiting portion cooperates with the matching portion to limit the elastic impact component, so that when the impact seat moves toward the far end, the elastic impact component can be driven to compress and store energy;

[0011] The impact seat is provided with a guide release portion corresponding to the matching portion. When the guide release portion moves toward the distal end to match with the matching portion, the guide release portion can drive the matching portion to rotate to release the limited matching with the limiting portion. The elastic impact component releases elastic energy and moves toward the distal end to impact the ablation unit, and after the impact, the drive component disconnects the drive connection with the impact seat;

[0012] The first reset elastic member is arranged between the elastic impact assembly and the limit seat. When the elastic impact assembly moves toward the distal end, it drives the first reset elastic member to compress and store energy. After the impact, the first reset elastic member drives the elastic impact assembly and the impact seat to move toward the proximal end and reset. A guide reset portion corresponding to the matching portion is provided on the limit seat. When the elastic impact assembly moves toward the proximal end, the guide reset portion cooperates with the matching portion to drive the matching portion to rotate and reset.

[0013] According to an embodiment of the present invention, the driving assembly is provided with a rotation output part, and the driving assembly can drive the rotation output part to rotate; a spiral transmission part is provided on one end of the impact seat toward the proximal end, and the spiral transmission part spirally extends toward the proximal end;

[0014] The rotation output part is arranged on the spiral transmission part. When the rotation output part rotates, it can move along the spiral transmission part and drive the impact seat to move toward the distal end through the spiral transmission part. After the impact seat moves toward the distal end to a preset stroke, the rotation output part leaves the spiral transmission part, and the driving assembly disconnects the driving connection with the impact seat.

[0015] According to an embodiment of the present invention, two spiral transmission parts are included, and the spiral transmission parts are spiral blades, the two spiral blades have the same size and extend spirally in the same spiral direction, and the two spiral blades form a circle;

[0016] The rotation output part comprises a driving shaft, and two ends of the driving shaft are respectively arranged on the two spiral blades.

[0017] According to one embodiment of the present invention, the driving assembly includes a motor, the rotating output part includes an output seat, the output shaft of the motor is drivingly connected to the output seat, the output seat is arranged between the two spiral blades, and the driving shaft passes through the output seat and its two ends extend out of the output seat.

[0018] According to one embodiment of the present invention, it includes a shell, the impact unit and the ablation unit are both arranged in the shell, the driving assembly and the ablation unit are fixedly connected to the shell, the impact seat is slidably connected to the shell, the limit seat is slidably connected to the impact seat, and the limit seat is abutted against the ablation unit through the elastic impact assembly.

[0019] According to one embodiment of the present invention, the elastic impact assembly includes an impact piece and an impact elastic piece, the impact piece is slidably connected to the impact seat and can rotate relative to the impact seat, the impact elastic piece is arranged between the impact seat and the impact piece, the first reset elastic piece is arranged between the impact piece and the limit seat, and the impact seat drives the impact elastic piece to compress and store energy when moving toward the distal end. The matching part is arranged on the impact piece, and the guide release part drives the matching part and the impact piece to rotate to release the limiting cooperation between the matching part and the limiting part. The impact elastic piece releases the elastic energy to drive the impact piece to slide toward the distal end to impact the ablation unit.

[0020] According to an embodiment of the present invention, a movable groove is provided on the limiting seat, and the movable groove sequentially includes a first movable groove, a limiting groove and a second movable groove toward the ablation unit, the first movable groove and the second movable groove are extended along the axial direction of the impact member, and the limiting groove is extended along the circumferential rotation direction of the impact member;

[0021] The limiting portion is a limiting surface, the guiding reset portion is a guiding reset surface, the limiting surface is a groove surface of the limiting groove close to the ablation unit, the guiding reset surface is a groove surface of the limiting groove close to the impact seat, the limiting surface is extended along the circumferential rotation direction of the impact member, and the guiding reset surface is obliquely arranged toward the first moving groove;

[0022] The mating portion is a mating shaft, and the mating shaft is arranged in the movable groove. When the mating shaft slides along the first movable groove until it abuts against the limiting surface, the impact member is limited; when the guide release portion drives the mating shaft to rotate to the second movable groove, the impact member is released from the limit; when the impact member is reset, the mating shaft abuts against the guide reset surface, and is rotated to the first movable groove guided by the guide reset surface.

[0023] According to an embodiment of the present invention, a release groove is provided on the impact seat, the matching shaft is arranged in the release groove, the guide release portion is a guide release surface, the guide release surface is a groove surface of the release groove away from the ablation unit, and the guide release surface is arranged obliquely toward the second movable groove;

[0024] After the mating shaft abuts against the limiting surface, the guide release surface moves to abut against the mating shaft, and guides and drives the mating shaft to rotate to the second moving groove.

[0025] According to an embodiment of the present invention, the impact seat is an impact sleeve, a first installation cavity is provided in the impact sleeve, the limiting seat is a hollow limiting cap, the first installation cavity is open toward one end of the limiting cap, and a sliding hole is provided at one end of the first installation cavity away from the limiting cap; the limiting cap is passed through the open end of the first installation cavity and is slidably connected in the first installation cavity, and the limiting cap is open toward one end of the impact sleeve and is provided with a first impact hole at one end toward the ablation unit;

[0026] The impact member is arranged in the first installation cavity of the impact sleeve and the limiting cap, one end of the impact member is passed through and slidably connected to the sliding hole, and the impact member extends out of the limiting cap through the first impact hole to impact the ablation unit;

[0027] The impact elastic member is an impact spring, the first reset elastic member is a first reset spring, a separation flange is provided on the impact member, the impact spring is sleeved on the impact member and is located between the separation flange and the inner wall of one end of the first installation cavity away from the limiting cap, one end of the impact spring abuts against the inner wall of one end of the first installation cavity away from the limiting cap, and the other end abuts against the separation flange;

[0028] The first return spring is sleeved on the impact member and is located between the partition flange and the inner wall of the limiting cap at one end away from the impact sleeve. One end of the first return spring abuts against the inner wall of the limiting cap at one end away from the impact sleeve, and the other end abuts against the partition flange.

[0029] According to an embodiment of the present invention, the impact member extends out of the first installation cavity through the sliding hole, and a limit head is provided on the portion extending out of the first installation cavity, and the size of the limit head is larger than the first installation cavity.

[0030] According to one embodiment of the present invention, a mounting hole is provided at one end of the first mounting cavity away from the limiting cap, the mounting hole is connected to the sliding hole through a connecting groove, the size of the mounting hole is larger than the limiting head, and after the limiting head extends out of the first mounting cavity through the mounting hole, the impact member is arranged in the sliding hole through the connecting groove.

[0031] According to one embodiment of the present invention, the impact sleeve is provided with a second mounting cavity on a side of the first mounting cavity away from the limiting cap, one side of the second mounting cavity is open, the second mounting cavity is connected with the first mounting cavity through the mounting hole and the sliding hole, a plug is provided in the second mounting cavity, the plug is arranged in the second mounting cavity through the opening, and the plug abuts against the limiting head to limit the impact member in the sliding hole.

[0032] According to one embodiment of the present invention, the ablation unit includes an ablation component and a second resetting elastic member. The elastic impact component hits the ablation component and drives the second resetting elastic member to compress and store energy. After the elastic impact component is reset, the ablation component is reset by the second resetting elastic member.

[0033] According to an embodiment of the present invention, the ablation assembly comprises an ablation seat, a sliding seat and an ablation needle, the ablation seat is hollow inside, and a second impact hole is provided at one end of the ablation seat facing the impact unit; the sliding seat is slidably connected inside the sliding seat, the ablation needle is fixedly arranged on the sliding seat, and the second resetting elastic member is connected to the sliding seat;

[0034] The elastic impact assembly hits the sliding seat through the first impact hole and the second impact hole, driving the sliding seat to slide toward the distal end and driving the second reset elastic member to compress and store energy, so that the ablation needle can impact the target tissue. After the elastic impact assembly is reset, the sliding seat and the ablation needle are reset through the second reset elastic member.

[0035] According to an embodiment of the present invention, a water inlet pipe and a water return pipe are included, the sliding seat is provided with a water inlet and a water return port, the ablation needle is provided with a water inlet cavity and a water return cavity, the water inlet is connected with the water inlet cavity and the water inlet pipe, and the water return port is connected with the water return cavity and the water return pipe;

[0036] The water inlet pipe is used to introduce cooling liquid for cooling the ablation needle into the water inlet cavity, and the water return pipe is used for the return of the cooling liquid.

[0037] According to an embodiment of the present invention, the ablation needle comprises an inner tube and an outer tube, and both the inner tube and the outer tube are fixedly connected to the sliding seat;

[0038] The water inlet cavity is the inner cavity of the inner tube, and the water return cavity is the annular cavity between the inner tube and the outer tube, or the water return cavity is the inner cavity of the inner tube, and the water inlet cavity is the annular cavity between the inner tube and the outer tube;

[0039] The water inlet cavity and the water return cavity are connected at the distal end of the ablation needle.

[0040] According to an embodiment of the present invention, a conductive cable is included, and the conductive cable is electrically connected to the ablation needle.

[0041] According to an embodiment of the present invention, the ablation needle comprises an insulating tube, and the insulating tube is sleeved on the outer tube.

[0042] Due to the adoption of the above technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0043] 1. The present invention uses an impact unit to impact the ablation unit, so that the ablation unit can perform both ablation and impact to eliminate calcification. By cleverly integrating the impact crushing technology with the ablation technology, the present invention can simultaneously utilize the powerful crushing effect of the impact unit and the precise ablation function of the ablation unit to implement comprehensive and effective treatment for calcified uterine fibroids, a difficult-to-treat disease. This dual action mechanism not only accelerates the decomposition of calcifications, but also ensures the in-depth and thorough ablation process, significantly improving the treatment effect and bringing patients a faster and better recovery experience.

[0044] The elastic impact component design adopted in the present invention realizes a soft and powerful impact by storing energy in the elastic impact component, effectively avoiding damage to the ablation needle caused by direct rigid impact, extending the service life of the device. At the same time, the ablation needle can also flexibly impact the calcification focus, reducing the patient's discomfort during treatment and improving the safety and comfort of treatment.

[0045] The present invention uses the guide release part to release the limit of the elastic impact component so that it impacts the ablation unit, and cleverly utilizes the kinetic energy of the impact seat, so that the impact seat can not only play the role of compressing the elastic impact component, but also play the role of releasing the elastic impact component, thereby realizing the maximum utilization of energy. This design not only simplifies the operation process, but also improves the energy conversion efficiency.

[0046] In addition, the driving component of the present invention that drives the impact seat to move is intermittently driven and connected to the impact seat. The driving component drives the impact seat to move toward the far end to a preset stroke and then disconnects the driving connection with the impact seat, so that the reaction force after the impact will not be transmitted to the driving component, shell and other components. Combined with the elastic impact of the elastic impact component, the overall vibration caused by the impact can be reduced, which effectively improves the stability and reliability while improving the user experience, and also extends the service life of key components such as the driving component, and reduces maintenance costs. After the impact, the elastic impact component compresses the first reset elastic part and drives the elastic impact component and the impact seat to reset through the first reset elastic part. After the impact seat is reset, the driving component is re-connected to the impact seat drive, so as to achieve continuous impact. The reset driven by the first reset elastic part realizes automatic reset, simplifies the operation process, and also utilizes the kinetic energy of the elastic impact component to improve the energy conversion efficiency.

[0047] 2. The present invention converts the rotary motion of the driving assembly into the linear movement of the impact seat through the rotary output part and the spiral transmission part, which can reduce the driving stroke to reduce the overall size of the device, and the impact frequency can be increased through the rotary drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0049] Figure 1 It is an overall schematic diagram of the present invention;

[0050] Figure 2 It is an overall cross-sectional view of the present invention;

[0051] Figure 3 For the present invention Figure 2 Partial magnification Figure 1 ;

[0052] Figure 4 For the present invention Figure 2 Partial magnification Figure 2 ;

[0053] Figure 5 For the present invention Figure 2 Partial magnification Figure 3 ;

[0054] Figure 6 Partial cross-section of the present invention Figure 1 ;

[0055] Figure 7 Partial cross-section of the present invention Figure 2 ;

[0056] Figure 8 The schematic diagram of the housing is hidden for the present invention;

[0057] Fig. 9 For the present invention Figure 8 A partial enlarged view of

[0058] Fig.10 For the present invention Fig. 9 's front view;

[0059] Fig.11 It is a partial cross-sectional view of the present invention;

[0060] Fig.12 For the present invention Fig.11 A partial enlarged view of

[0061] Fig.13 It is an exploded view of the present invention;

[0062] Fig.14 It is a schematic diagram of the limiting cap of the present invention;

[0063] Fig.15A It is a schematic diagram of the initial state of the present invention;

[0064] Fig. 15B It is a schematic diagram of the present invention when the matching shaft abuts against the limiting surface;

[0065] Fig. 15C This is a schematic diagram of the process in which the guide release surface of the present invention drives the matching shaft to rotate;

[0066] Fig.15D It is a schematic diagram after impact of the present invention.

[0067] Description of reference numerals:

[0068] 100, impact unit; 101, main body shell; 102, cover shell; 103, end cover; 104, motor; 105, push switch; 106, press kit; 107, output seat; 108, push shaft; 109, impact sleeve; 110, spiral blade; 111, first slider; 112, release groove; 113, guide release surface; 114, rivet; 115, limit head; 116, separation flange; 117, matching shaft; 118, impact spring; 119, first return spring; 120, plug; 121, sliding hole; 122, mounting hole; 123, limit Position cap; 124, second slider; 125, movable groove; 126, first movable groove; 127, limiting groove; 128, second movable groove; 129, limiting surface; 130, guide reset surface; 200, ablation unit; 201, needle seat shell; 202, ablation needle; 203, ablation seat; 204, sliding seat; 205, third slider; 206, water inlet; 207, water return port; 208, lead groove; 209, inner tube; 210, outer tube; 211, needle tip; 212, insulating tube; 213, second reset spring; 214, water inlet pipe; 215, water return pipe. DETAILED DESCRIPTION

[0069] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and use inaccurate ratios, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0070] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship and movement of various components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication will also change accordingly. In the embodiments of the present invention, "proximal end" refers to the end close to the operator, and "distal end" refers to the end away from the operator.

[0071] See also Figures 1 to 15D The core of the present invention is to provide an impact ablation device for uterine fibroid surgery, especially for the treatment of calcified uterine fibroids. The device can ablate calcified uterine fibroids and can also impact calcified uterine fibroids to crush deposited calcifications. That is to say, the present invention combines impact crushing technology with ablation technology, aiming to achieve comprehensive and effective treatment of calcified uterine fibroids through a dual action mechanism, and provides an effective solution for the treatment of uterine fibroids, adenomyosis, endometritis and other diseases. Of course, the device can also be used for other diseases accompanied by calcifications, and this embodiment does not specifically limit its scope of application.

[0072] The impact ablation device comprises an impact unit 100 arranged at the proximal end and an ablation unit 200 arranged at the distal end, wherein the impact unit 100 is used to impact the ablation unit 200, and the ablation unit 200 is used to ablate and / or impact the target tissue. The device also comprises a housing, wherein the impact unit 100 and the ablation unit 200 are both arranged in the housing.

[0073] Specifically, the housing includes a needle handle housing and a needle seat housing 201, the impact unit 100 is disposed in the needle handle housing, the ablation unit 200 is disposed in the needle seat housing 201, the needle handle housing and the needle seat housing 201 are made of materials such as ABS and PC, and the needle handle housing and the needle seat housing 201 are fixedly connected. The needle handle housing specifically includes a main body housing 101, a cover housing 102 and an end cover 103, the cover housing 102 is sealed and covered on the main body housing 101, the end cover 103 is disposed at one end of the needle handle housing away from the needle seat housing 201, and the end cover 103 is sealed and connected to the main body housing 101 and the cover housing 102, a cavity is formed between the main body housing 101, the cover housing 102 and the end cover 103, and the cavity is open toward one end of the needle seat housing 201 and communicates with it.

[0074] The impact unit 100 includes a driving assembly, an impact seat, an elastic impact assembly, a limit seat and a first resetting elastic member, wherein the limit seat is arranged on the side of the impact seat facing the distal end. The driving assembly is fixedly connected to the needle handle housing, the impact seat is slidably connected to the needle handle housing, and the limit seat is slidably connected to the impact seat.

[0075] The driving assembly is intermittently driven and connected to the impact seat. After the driving assembly drives the impact seat to move toward the far end to a preset stroke, the driving connection with the impact seat is disconnected. After the impact seat is reset, the driving assembly is re-connected to the impact seat.

[0076] One end of the elastic impact assembly is in contact with the impact seat, a matching portion is provided on the elastic impact assembly, and a limiting portion corresponding to the matching portion is provided on the limiting seat, and the limiting portion and the matching portion cooperate to limit the elastic impact assembly, so that when the impact seat moves toward the distal end, the elastic impact assembly can be driven to compress and store energy. The limiting seat is in contact with the ablation unit 200 through the elastic impact assembly.

[0077] The impact seat is provided with a guide release portion corresponding to the matching portion. When the guide release portion moves toward the distal end to match with the matching portion, the guide release portion can drive the matching portion to rotate to release the limiting cooperation with the limiting portion. The elastic impact component releases elastic energy to move toward the distal end to impact the ablation unit 200, and after the impact, the driving component disconnects the driving connection with the impact seat.

[0078] The first reset elastic member is arranged between the elastic impact assembly and the limit seat. When the elastic impact assembly moves toward the distal end, it drives the first reset elastic member to compress and store energy. After the impact, the first reset elastic member drives the elastic impact assembly and the impact seat to move toward the proximal end and reset. A guide reset part corresponding to the matching part is provided on the limit seat. When the elastic impact assembly moves toward the proximal end, the guide reset part cooperates with the matching part to drive the matching part to rotate and reset.

[0079] Specifically, the driving assembly is provided with a rotating output part, and the driving assembly can drive the rotating output part to rotate; a spiral transmission part is provided on the end of the impact seat facing the proximal end, and the spiral transmission part spirally extends toward the proximal end. The rotating output part is arranged on the spiral transmission part, and when the rotating output part rotates, it can move along the spiral transmission part and drive the impact seat to move toward the distal end through the spiral transmission part. After the impact seat moves toward the distal end to a preset stroke, the rotating output part leaves the spiral transmission part, and the driving assembly is disconnected from the impact seat.

[0080] This embodiment includes two spiral transmission parts, and the spiral transmission parts are spiral blades 110. The two spiral blades 110 have the same size and extend spirally in the same spiral direction. The two spiral blades 110 form a circle. The rotation output part includes a driving shaft 108, and the two ends of the driving shaft 108 are respectively arranged on the two spiral blades 110.

[0081] In this embodiment, the driving component is a motor 104, which is connected to the needle handle housing through a mounting plate. The rotating output part includes an output seat 107. The output shaft of the motor 104 is drivingly connected to the output seat 107. The output seat 107 is arranged between the two spiral blades 110. The driving shaft 108 is passed through the output seat 107 and its two ends extend out of the output seat 107 to be respectively arranged on the two spiral blades 110.

[0082] A push switch 105 is also installed in the needle handle housing, and the push switch 105 is electrically connected to the motor 104 to control the start and stop of the motor 104. A push kit 106 is also provided on the cover 102, which is connected to the inside and outside and connected to the push switch 105. By pressing the push kit 106, the push switch 105 can be controlled.

[0083] The elastic impact assembly includes an impact piece, an impact elastic piece and an impact seat. The impact piece is slidably connected to the impact seat and can rotate relative to the impact seat. The impact elastic piece is arranged between the impact seat and the impact piece. The first reset elastic piece is arranged between the impact piece and the limit seat. When the impact seat moves toward the distal end, it drives the impact elastic piece to compress and store energy. The matching part is arranged on the impact piece, and the guide release part drives the matching part and the impact piece to rotate to release the limiting matching between the matching part and the limiting part. The impact elastic piece releases the elastic energy to drive the impact piece to slide toward the distal end to impact the ablation unit 200.

[0084] A movable groove 125 is provided on the limiting seat, and the movable groove 125 includes a first movable groove 126, a limiting groove 127 and a second movable groove 128 in sequence toward the ablation unit 200. The first movable groove 126 and the second movable groove 128 are extended along the axial direction of the impact piece, and the limiting groove 127 is extended along the circumferential rotation direction of the impact piece.

[0085] The limiting portion is a limiting surface 129, and the guiding resetting portion is a guiding resetting surface 130. The limiting surface 129 is the groove surface of the limiting groove 127 close to the ablation unit 200, and the guiding resetting surface 130 is the groove surface of the limiting groove 127 close to the impact seat. The limiting surface 129 is extended along the circumferential rotation direction of the impact piece, and the guiding resetting surface 130 is obliquely arranged to the first movable groove 126.

[0086] The mating part is a mating shaft 117, which is arranged in the movable groove 125. When the mating shaft 117 slides along the first movable groove 126 and abuts against the limiting surface 129, the impact piece is limited; when the guide release part drives the mating shaft 117 to rotate to the second movable groove 128, the impact piece is released from the limit; when the impact piece is reset, the mating shaft 117 abuts against the guide reset surface 130, and rotates to the first movable groove 126 guided by the guide reset surface 130.

[0087] A release groove 112 is provided on the impact seat, and a mating shaft 117 is provided in the release groove 112. The guide release portion is a guide release surface 113. The guide release surface 113 is the groove surface of the release groove 112 away from the ablation unit 200, and the guide release surface 113 is arranged obliquely to the second movable groove 128. After the mating shaft 117 abuts against the limiting surface 129, the guide release surface 113 moves to abut against the mating shaft 117, and guides and drives the mating shaft 117 to rotate to the second movable groove 128.

[0088] Specifically, in this embodiment, the impact seat is an impact sleeve 109, and a plurality of first sliders 111 are evenly arranged on the outer wall of the impact sleeve 109, and a plurality of corresponding first slide grooves are arranged on the needle handle shell, and the first slider 111 is slidably connected in the first slide groove, so that the impact sleeve 109 is slidably connected with the needle handle shell, and a first installation cavity is arranged in the impact sleeve 109. The limiting seat is a hollow limiting cap 123, and the first installation cavity is open toward one end of the limiting cap 123, and a sliding hole 121 is arranged at one end of the first installation cavity away from the limiting cap 123, and the impact piece is a rivet 114, and the rivet 114 is made of 304 stainless steel and can withstand huge impact force; the limiting seat is a hollow limiting cap 123, and the limiting cap 123 is passed through the open end of the first installation cavity and slidably connected in the first installation cavity, and the limiting cap 123 is open toward one end of the impact sleeve 109 and is provided with a first impact hole at one end toward the ablation unit 200. A plurality of second sliders 124 are evenly arranged on the outer wall of the limiting cap 123 , and a plurality of corresponding second slide grooves are arranged on the inner wall of the impact sleeve 109 . The second sliders 124 are slidably connected in the second slide grooves so that the limiting cap 123 is slidably connected to the impact sleeve 109 .

[0089] The rivet 114 is arranged in the first installation cavity and the limiting cap 123 of the impact sleeve 109, one end of the rivet 114 is penetrated and slidably connected to the sliding hole 121, the rivet 114 extends out of the first installation cavity through the sliding hole 121, and a limiting head 115 is provided on the portion extending out of the first installation cavity, the size of the limiting head 115 is larger than the first installation cavity, and the limiting head 115 is used to limit the rivet 114. And the rivet 114 extends out of the limiting cap 123 through the first impact hole to impact the ablation unit 200.

[0090] The impact elastic member is an impact spring 118, the first return elastic member is a first return spring 119, a partition flange 116 is provided on the rivet 114, the impact spring 118 is sleeved on the rivet 114 and is located between the partition flange 116 and the inner wall of one end of the first mounting cavity away from the limiting cap 123, one end of the impact spring 118 abuts against the inner wall of one end of the first mounting cavity away from the limiting cap 123, and the other end abuts against the partition flange 116.

[0091] The first return spring 119 is sleeved on the striker 114 and is located between the partition flange 116 and the inner wall of the limiting cap 123 at one end away from the impact sleeve 109 , one end of the first return spring 119 abuts against the inner wall of the limiting cap 123 at one end away from the impact sleeve 109 , and the other end abuts against the partition flange 116 .

[0092] The matching shaft 117 is passed through the partition flange 116, and both ends extend out of the partition flange 116. The movable groove 125 is provided on the side wall of the limiting cap 123, and a movable groove 125 is provided on both sides of the limiting cap 123, and both ends of the matching shaft 117 are respectively provided in the two movable grooves 125.

[0093] The release groove 112 is disposed on one end of the impact sleeve 109 facing the ablation unit 200 , and two release grooves 112 are correspondingly disposed on both sides of the impact sleeve 109 , and both ends of the matching shaft 117 are disposed in the two release grooves 112 .

[0094] Preferably, a mounting hole 122 is provided at one end of the first mounting cavity away from the limiting cap 123, and the mounting hole 122 is connected to the sliding hole 121 through a connecting groove. The size of the mounting hole 122 is larger than the limiting head 115. After the limiting head 115 extends out of the first mounting cavity through the mounting hole 122, the rivet 114 is arranged in the sliding hole 121 through the connecting groove, and the installation of the mounting hole 122 facilitates the installation of the rivet 114.

[0095] Furthermore, the impact sleeve 109 is provided with a second mounting cavity on the side of the first mounting cavity away from the limiting cap 123, and one side of the second mounting cavity is open. The second mounting cavity is connected with the first mounting cavity through the mounting hole 122 and the sliding hole 121, and a plug 120 is provided in the second mounting cavity. The plug 120 is arranged in the second mounting cavity through the opening of the second mounting cavity, and the plug 120 abuts against the limiting head 115 to limit the rivet 114 in the sliding hole 121 to prevent the rivet 114 from moving sideways and ensure stability.

[0096] The ablation unit 200 includes an ablation component and a second resetting elastic member. The elastic impact component hits the ablation component and drives the second resetting elastic member to compress and store energy. After the elastic impact component is reset, the ablation component is reset through the second resetting elastic member, and the second resetting elastic member can also play a buffering role to prevent the ablation needle 202 from being damaged due to excessive impact force.

[0097] Specifically, the ablation assembly includes an ablation seat 203, a sliding seat 204 and an ablation needle 202. The ablation seat 203 is fixedly connected to the needle seat housing 201 and is hollow inside. A second impact hole is provided at one end of the ablation seat 203 facing the impact unit 100. A plurality of third sliders 205 are provided on the outer wall of the sliding seat 204. A plurality of corresponding third slide grooves are provided on the inner wall of the ablation seat 203. The third sliders 205 are slidably connected in the third slide grooves, so that the sliding seat 204 is slidably connected to the ablation seat 203. A limiting shoulder is provided on the sliding seat 204. One end of the sliding seat 204 facing the impact unit 100 is penetrated in the second impact hole, and the sliding seat 204 is restricted by the limiting shoulder to prevent excessive movement toward the impact unit 100. The ablation needle 202 is fixed on the sliding seat 204, and the distal end of the needle seat shell 201 is provided with a through hole, and the ablation needle 202 passes through the needle seat shell 201 through the through hole. The second reset elastic member is specifically a second reset spring 213, and the second reset spring 213 is sleeved on the ablation needle 202 and its two ends are respectively abutted against the sliding seat 204 and the inner wall of the distal end of the needle seat shell 201.

[0098] The rivet 114 hits the sliding seat 204 through the first impact hole and the second impact hole, driving the sliding seat 204 to slide toward the distal end and driving the second return spring 213 to compress and store energy, so that the ablation needle 202 can impact the target tissue. After the rivet 114 is reset, the sliding seat 204 and the ablation needle 202 are reset by the second return spring 213.

[0099] The ablation assembly includes a water inlet pipe 214 and a water return pipe 215. The sliding seat 204 is provided with a water inlet 206 and a water return port 207. The ablation needle 202 is provided with a water inlet cavity and a water return cavity. The water inlet 206 is connected with the water inlet cavity and the water inlet pipe 214. The water return port 207 is connected with the water return cavity and the water return pipe 215. The water inlet pipe 214 is used to introduce a cooling liquid for cooling the ablation needle 202 into the water inlet cavity, and the water return pipe 215 is used for the reflux of the cooling liquid. The cooling liquid is used to dissipate heat of the ablation needle 202 during ablation. It also includes a conductive cable, which is electrically connected to the ablation needle 202 and is used to conduct electricity to the ablation needle 202 for ablation. The water inlet pipe 214, the water return pipe 215 and the conductive cable are all made of flexible materials, and a certain length of margin can be left to adapt to the sliding of the sliding seat 204, ensuring that the water inlet pipe 214 and the water return pipe 215 can maintain communication with the ablation needle 202 when the sliding seat 204 slides, ensuring the conductive connection between the conductive cable and the ablation needle 202.

[0100] The ablation seat 203 is provided with a lead wire groove 208 , and the needle seat housing 201 is provided with a lead wire hole. The water inlet pipe 214 , the water return pipe 215 and the conductive cable enter the sliding seat 204 through the lead wire hole and the lead wire groove 208 to connect with the ablation needle 202 .

[0101] Specifically, the ablation needle 202 includes an inner tube 209, an outer tube 210, a needle tip 211 and an insulating tube 212. The inner tube 209 and the outer tube 210 are both fixedly connected to the sliding seat 204. The outer tube 210 is sleeved on the inner tube 209, the insulating tube 212 is sleeved on the outer tube 210, the needle tip 211 is arranged at the distal end of the ablation needle 202, the needle tip 211 is connected to the inner tube 209 or the outer tube 210, the insulating tube 212 is fixedly connected to the needle seat housing 201, and the insulating tube 212 is used for insulation of the ablation needle 202. The water inlet cavity is the inner cavity of the inner tube 209, and the water return cavity is the annular cavity between the inner tube 209 and the outer tube 210, or the water return cavity is the inner cavity of the inner tube 209, and the water inlet cavity is the annular cavity between the inner tube 209 and the outer tube 210, and the water inlet cavity and the water return cavity are connected at the distal end of the ablation needle 202. The conductive cable is conductively connected to the outer tube 210 .

[0102] The working process of the present invention is further described below:

[0103] See also Fig.15A , the entire device is in an initial state, the motor 104 is not started, and the driving shaft 108 abuts against the lowest end of the spiral blade 110.

[0104] See also Fig. 15B The motor 104 is started, and the motor 104 drives the output seat 107 and the driving shaft 108 to rotate. The two ends of the driving shaft 108 slide along the two spiral blades 110 respectively to push the impact sleeve 109 to slide toward the far end, and the impact sleeve 109 compresses the impact spring 118. At the same time, the matching shaft 117 slides in the first moving groove 126, and the guide release surface 113 on the impact sleeve 109 abuts against the matching shaft 117 on the rivet 114, and the matching shaft 117 abuts against the limiting surface 129.

[0105] See also Fig. 15C , is in a critical state, the pushing shaft 108 continues to slide upward along the spiral blade 110 and is about to complete a circular stroke, and the impact sleeve 109 drives the matching shaft 117 and the rivet 114 to rotate through the guide release surface 113, so that the matching shaft 117 rotates to one end of the limiting groove 127 close to the second movable groove 128.

[0106] See also Fig.15D, the impact sleeve 109 drives the matching shaft 117 to rotate through the guide release surface 113 until it falls into the second moving groove 128, and the impact spring 118 instantly releases its elastic energy, driving the rivet 114 to move toward the distal end, and the rivet 114 hits the sliding seat 204 through the first impact hole and the second impact hole. At the same time, the matching shaft 117 moves toward the distal end in the second moving groove 128, and the rivet 114 compresses the first reset elastic member when it moves toward the distal end. After the rivet 114 hits the sliding seat 204, it drives the sliding seat 204 and the ablation needle 202 to move toward the distal end, and the sliding seat 204 compresses the second reset elastic member. After the collision is completed, the rivet 114 and the impact sleeve 109 are reset through the first reset elastic member, and the sliding seat 204 and the ablation needle 202 are reset through the second reset elastic member. After the impact is completed, the driving shaft 108 rotates to leave the spiral blade 110, disconnecting the driving connection with the impact sleeve 109, and after the impact sleeve 109 moves toward the proximal end and resets, the driving shaft 108 abuts against the lowest end of the spiral blade 110 again.

[0107] This completes a collision and returns to Fig.15A As described above, with the repetitive rotation of the motor 104, the ablation needle 202 can be continuously and repetitively impacted.

[0108] The present invention uses the impact unit 100 to impact the ablation unit 200, so that the ablation unit 200 can perform both ablation and impact to eliminate calcification. By cleverly integrating the impact crushing technology with the ablation technology, the present invention can simultaneously utilize the powerful crushing effect of the impact unit 100 and the precise ablation function of the ablation unit 200 to implement comprehensive and effective treatment for the intractable disease of calcified uterine fibroids. This dual action mechanism not only accelerates the decomposition of calcification, but also ensures the in-depth and thorough ablation process, significantly improves the treatment effect, and brings patients a faster and better recovery experience.

[0109] The elastic impact component design adopted in the present invention achieves a soft and powerful impact of the pin 114 by storing energy in the impact spring 118, effectively avoiding damage to the ablation needle 202 caused by direct rigid impact, and extending the service life of the device. At the same time, the ablation needle 202 can also flexibly impact the calcification focus, reducing the patient's discomfort during the treatment process and improving the safety and comfort of the treatment.

[0110] In addition, the present invention drives the matching shaft 117 to rotate to release its limit through the guide release surface 113, and cleverly utilizes the kinetic energy of the impact sleeve 109, so that the impact sleeve 109 can not only play the role of compressing the impact spring 118, but also play the role of releasing the rivet 114, thereby realizing the maximum utilization of energy. This design not only simplifies the operation process, but also improves the energy conversion efficiency.

[0111] In addition, the motor 104 of the present invention that drives the impact sleeve 109 to move is intermittently driven and connected to the impact sleeve 109 through the spiral blade 110. After the motor 104 drives the impact sleeve 109 to move toward the far end to a preset stroke, the driving connection with the impact sleeve 109 is disconnected, so that the reaction force after the impact will not be transmitted to the motor 104, the shell and other components. Combined with the elastic impact of the elastic impact component, the overall vibration caused by the impact can be reduced, while improving the user experience, the stability and reliability are effectively improved, and the service life of key components such as the motor 104 is extended, and the maintenance cost is reduced. After the impact, the rivet 114 compresses the first return spring 119 and drives the rivet 114 and the impact sleeve 109 to reset through the first return spring 119. After the impact sleeve 109 is reset, the motor 104 is re-connected to the impact seat drive, so as to achieve continuous impact. The reset driven by the first return spring 119 realizes automatic reset, simplifies the operation process, and also utilizes the kinetic energy of the rivet 114 to improve the energy conversion efficiency. Furthermore, the present invention converts the rotary motion of the motor 104 into the linear motion of the impact seat through the transversely arranged driving shaft 108 and the spiral blade 110, which can reduce the driving stroke to reduce the overall size of the device, and the impact frequency can be increased through the rotary drive.

[0112] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A percussive ablation device, characterized in that: The device comprises an impact unit arranged at the proximal end and an ablation unit arranged at the distal end, wherein the impact unit is used to impact the ablation unit, and the ablation unit is used to ablate and / or impact the target tissue; the impact unit comprises a driving assembly, an impact seat, an elastic impact assembly, a limit seat and a first resetting elastic member, wherein the limit seat is arranged on the side of the impact seat facing the distal end; The driving assembly is intermittently connected to the impact seat, the driving assembly drives the impact seat to move toward the far end to a preset stroke and then disconnects the driving connection with the impact seat, and the driving assembly is reconnected to the impact seat after the impact seat is reset; One end of the elastic impact component is in contact with the impact seat, a matching portion is provided on the elastic impact component, and a limiting portion corresponding to the matching portion is provided on the limiting seat, and the limiting portion cooperates with the matching portion to limit the elastic impact component, so that when the impact seat moves toward the far end, the elastic impact component can be driven to compress and store energy; The impact seat is provided with a guide release portion corresponding to the matching portion. When the guide release portion moves toward the distal end to match with the matching portion, the guide release portion can drive the matching portion to rotate to release the limited matching with the limiting portion. The elastic impact component releases elastic energy and moves toward the distal end to impact the ablation unit, and after the impact, the drive component disconnects the drive connection with the impact seat; The first reset elastic member is arranged between the elastic impact assembly and the limit seat. When the elastic impact assembly moves toward the distal end, it drives the first reset elastic member to compress and store energy. After the impact, the first reset elastic member drives the elastic impact assembly and the impact seat to move toward the proximal end and reset. A guide reset portion corresponding to the matching portion is provided on the limit seat. When the elastic impact assembly moves toward the proximal end, the guide reset portion cooperates with the matching portion to drive the matching portion to rotate and reset.

2. The impact ablation device according to claim 1, characterized in that: The driving assembly is provided with a rotation output part, and the driving assembly can drive the rotation output part to rotate; the impact seat is provided with a spiral transmission part on one end facing the proximal end, and the spiral transmission part spirally extends toward the proximal end; The rotation output part is arranged on the spiral transmission part. When the rotation output part rotates, it can move along the spiral transmission part and drive the impact seat to move toward the distal end through the spiral transmission part. After the impact seat moves toward the distal end to a preset stroke, the rotation output part leaves the spiral transmission part, and the driving assembly disconnects the driving connection with the impact seat.

3. The impact ablation device according to claim 2, characterized in that: It comprises two spiral transmission parts, and the spiral transmission parts are spiral blades, the two spiral blades have the same size and extend spirally in the same spiral direction, and the two spiral blades form a circle; The rotation output part comprises a driving shaft, and two ends of the driving shaft are respectively arranged on the two spiral blades.

4. The impact ablation device according to claim 3, characterized in that: The driving assembly includes a motor, the rotating output part includes an output seat, the output shaft of the motor is drivingly connected to the output seat, the output seat is arranged between the two spiral blades, and the driving shaft passes through the output seat and its two ends extend out of the output seat.

5. The impact ablation device according to claim 1, characterized in that: It includes a shell, the impact unit and the ablation unit are both arranged in the shell, the driving assembly and the ablation unit are fixedly connected to the shell, the impact seat is slidably connected to the shell, the limit seat is slidably connected to the impact seat, and the limit seat is abutted against the ablation unit through the elastic impact assembly.

6. The impact ablation device according to claim 5, characterized in that: The elastic impact assembly includes an impact piece and an impact elastic piece, the impact piece is slidably connected to the impact seat and can rotate relative to the impact seat, the impact elastic piece is arranged between the impact seat and the impact piece, the first reset elastic piece is arranged between the impact piece and the limit seat, and the impact seat drives the impact elastic piece to compress and store energy when moving toward the distal end. The matching part is arranged on the impact piece, and the guide release part drives the matching part and the impact piece to rotate to release the limiting matching between the matching part and the limiting part. The impact elastic piece releases the elastic energy to drive the impact piece to slide toward the distal end to impact the ablation unit.

7. The impact ablation device according to claim 6, characterized in that: The limiting seat is provided with a movable groove, and the movable groove sequentially includes a first movable groove, a limiting groove and a second movable groove toward the ablation unit, the first movable groove and the second movable groove are extended along the axial direction of the impact member, and the limiting groove is extended along the circumferential rotation direction of the impact member; The limiting portion is a limiting surface, the guiding reset portion is a guiding reset surface, the limiting surface is a groove surface of the limiting groove close to the ablation unit, the guiding reset surface is a groove surface of the limiting groove close to the impact seat, the limiting surface is extended along the circumferential rotation direction of the impact member, and the guiding reset surface is obliquely arranged toward the first moving groove; The mating portion is a mating shaft, and the mating shaft is arranged in the movable groove. When the mating shaft slides along the first movable groove until it abuts against the limiting surface, the impact member is limited; when the guide release portion drives the mating shaft to rotate to the second movable groove, the impact member is released from the limit; when the impact member is reset, the mating shaft abuts against the guide reset surface, and is rotated to the first movable groove guided by the guide reset surface.

8. The impact ablation device according to claim 7, characterized in that: The impact seat is provided with a release groove, the matching shaft is arranged in the release groove, the guide release portion is a guide release surface, the guide release surface is a groove surface of the release groove away from the ablation unit, and the guide release surface is arranged obliquely toward the second movable groove; After the mating shaft abuts against the limiting surface, the guide release surface moves to abut against the mating shaft, and guides and drives the mating shaft to rotate to the second moving groove.

9. The impact ablation device according to claim 6, characterized in that: The impact seat is an impact sleeve, a first mounting cavity is provided inside the impact sleeve, the limiting seat is a hollow limiting cap, the first mounting cavity is open toward one end of the limiting cap, and a sliding hole is provided at one end of the first mounting cavity away from the limiting cap; the limiting cap is passed through the open end of the first mounting cavity and is slidably connected in the first mounting cavity, and the limiting cap is open toward one end of the impact sleeve and is provided with a first impact hole at one end toward the ablation unit; The impact member is arranged in the first installation cavity of the impact sleeve and the limiting cap, one end of the impact member is passed through and slidably connected to the sliding hole, and the impact member extends out of the limiting cap through the first impact hole to impact the ablation unit; The impact elastic member is an impact spring, the first reset elastic member is a first reset spring, a separation flange is provided on the impact member, the impact spring is sleeved on the impact member and is located between the separation flange and the inner wall of one end of the first installation cavity away from the limiting cap, one end of the impact spring abuts against the inner wall of one end of the first installation cavity away from the limiting cap, and the other end abuts against the separation flange; The first return spring is sleeved on the impact member and is located between the partition flange and the inner wall of the limiting cap at one end away from the impact sleeve. One end of the first return spring abuts against the inner wall of the limiting cap at one end away from the impact sleeve, and the other end abuts against the partition flange.

10. The impact ablation device according to claim 9, characterized in that: The impact member extends out of the first installation cavity through the sliding hole, and a limiting head is provided on the portion extending out of the first installation cavity, and the size of the limiting head is larger than the first installation cavity.

11. The impact ablation device according to claim 10, characterized in that: A mounting hole is provided at one end of the first mounting cavity away from the limiting cap, and the mounting hole is connected to the sliding hole through a connecting groove. The size of the mounting hole is larger than the limiting head. After the limiting head extends out of the first mounting cavity through the mounting hole, the impact member is arranged in the sliding hole through the connecting groove.

12. The impact ablation device according to claim 11, characterized in that: The impact sleeve is provided with a second mounting cavity on the side of the first mounting cavity away from the limiting cap, and one side of the second mounting cavity is open. The second mounting cavity is connected with the first mounting cavity through the mounting hole and the sliding hole. A plug is provided in the second mounting cavity, and the plug is arranged in the second mounting cavity through the opening of the second mounting cavity. The plug abuts against the limiting head to limit the impact member in the sliding hole.

13. The impact ablation device according to claim 9, characterized in that: The ablation unit includes an ablation component and a second resetting elastic member. The elastic impact component impacts the ablation component and drives the second resetting elastic member to compress and store energy. After the elastic impact component is reset, the ablation component is reset through the second resetting elastic member.

14. The impact ablation device according to claim 13, characterized in that: The ablation assembly comprises an ablation seat, a sliding seat and an ablation needle. The ablation seat is hollow inside, and a second impact hole is provided at one end of the ablation seat facing the impact unit; the sliding seat is slidably connected inside the sliding seat, the ablation needle is fixedly arranged on the sliding seat, and the second resetting elastic member is connected to the sliding seat; The elastic impact assembly hits the sliding seat through the first impact hole and the second impact hole, driving the sliding seat to slide toward the distal end and driving the second reset elastic member to compress and store energy, so that the ablation needle can impact the target tissue. After the elastic impact assembly is reset, the sliding seat and the ablation needle are reset through the second reset elastic member.

15. The impact ablation device according to claim 14, characterized in that: It includes a water inlet pipe and a water return pipe, the sliding seat is provided with a water inlet and a water return port, the ablation needle is provided with a water inlet cavity and a water return cavity, the water inlet is connected with the water inlet cavity and the water inlet pipe, and the water return port is connected with the water return cavity and the water return pipe; The water inlet pipe is used to introduce cooling liquid for cooling the ablation needle into the water inlet cavity, and the water return pipe is used for the return of the cooling liquid.

16. The impact ablation device according to claim 15, characterized in that: The ablation needle comprises an inner tube and an outer tube, and both the inner tube and the outer tube are fixedly connected to the sliding seat; The water inlet cavity is the inner cavity of the inner tube, and the water return cavity is the annular cavity between the inner tube and the outer tube, or the water return cavity is the inner cavity of the inner tube, and the water inlet cavity is the annular cavity between the inner tube and the outer tube; The water inlet cavity and the water return cavity are connected at the distal end of the ablation needle.

17. The impact ablation device according to any one of claims 14 to 16, characterized in that: A conductive cable is included, wherein the conductive cable is electrically connected to the ablation needle.

18. The impact ablation device according to claim 16, characterized in that: The ablation needle comprises an insulating tube, and the insulating tube is sleeved on the outer tube.

Images