Impact ablation device

Abstract

Provided is an impact ablation device, comprising an impact unit (100) arranged at the proximal end and an ablation unit (200) arranged at the distal end. The impact unit (100) comprises a driving component (104), an impact base (109), an elastic impact component (114, 118), a limiting base (123), and a first reset elastic member (119). The limiting base (123) is arranged on the side of the impact base (109) facing the distal end. The driving component (104) is in intermittent driving connection with the impact base (109). One end of the elastic impact component (114, 118) abuts against the impact base (109). The elastic impact component (114, 118) is provided with a fitting portion (117), the limiting base (123) is provided with a limiting portion (129) corresponding to the fitting portion (117), and the limiting portion (129) fits with the fitting portion (117) to limit the elastic impact component (114, 118). The impact base (109) is provided with a guided-release portion (113) corresponding to the fitting portion (117), and the guided-release portion (113) can drive the fitting portion (117) to rotate to release the limiting fit with the limiting portion (129), such that the elastic impact component (114, 118) can release elastic energy to move towards the distal end to impact the ablation unit (200). The first reset elastic member (119) is arranged between the elastic impact component (114, 118) and the limiting base (123), and when the elastic impact component (114, 118) moves towards the distal end, the first reset elastic member (119) is driven to compress and store energy.

Description

An impact ablation device Technical Field

[0001] This invention belongs to the field of ablation technology, and particularly relates to an impact ablation device. Background Technology

[0002] In the field of women's reproductive health, uterine fibroids, as a common benign tumor, have always been a focus of medical attention. Although traditional treatments such as surgery, medication, and interventional therapy have alleviated patients' symptoms to some extent, these methods all have significant limitations. Surgical treatment often involves significant trauma and a long recovery time, and may affect the patient's fertility due to hysterectomy; medication is mostly limited to relieving symptoms and is unlikely to achieve a radical cure; interventional therapy requires a high level of skill from the physician and carries the risk of recurrence.

[0003] In particular, when uterine fibroids develop to a certain stage, they may be accompanied by the formation of uterine calcifications. This is due to the deposition of calcium salts in the myometrium caused by pathological processes such as uterine fibroids, adenomyosis, or endometritis. The presence of these calcifications not only increases the difficulty of treatment but also causes long-term distress 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 techniques for uterine fibroids have developed rapidly. For example, the manual uterine fibroid exciter disclosed in utility model CN216495528U, through its ingenious mechanical design, achieves flexible control and accurate operation during the surgical process, significantly improving the safety and reliability of the procedure. However, this exciter mainly focuses on the excision of uterine fibroid tissue and does not provide a direct and effective solution for the accompanying calcification problem.

[0005] Given the above background, there is an urgent need in the field for an innovative treatment tool that can simultaneously address uterine fibroids and their associated calcifications, thereby achieving comprehensive treatment of uterine fibroids and their complications. Such a device would further reduce surgical trauma, shorten recovery time, improve treatment efficacy, and reduce the risk of recurrence, providing safer and more effective treatment options for patients with uterine fibroids. Summary of the Invention

[0006] To address the aforementioned problems, the present invention aims to provide an impact ablation device that can perform both ablation and impact to eliminate calcifications.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows:

[0008] An impact ablation device includes an impact unit located at a proximal end and an ablation unit located at a distal end. The impact unit is used to impact the ablation unit, and the ablation unit is used to ablate and / or impact target tissue. The impact unit includes a drive assembly, an impact seat, an elastic impact assembly, a limiting seat, and a first reset elastic element. The limiting seat is located on the side of the impact seat facing the distal end.

[0009] The drive assembly is intermittently driven connected to the impact seat. After the drive assembly drives the impact seat to move toward the far end to a preset stroke, it disconnects from the drive assembly. After the impact seat is reset, the drive assembly reconnects to the impact seat.

[0010] One end of the elastic impact component abuts against the impact seat. The elastic impact component is provided with a mating part, and the limiting seat is provided with a limiting part corresponding to the mating part. The limiting part and the mating part cooperate to limit the elastic impact component so that when the impact seat moves toward the far end, it can drive the elastic impact component to compress and store energy.

[0011] The impact seat is provided with a guide release part corresponding to the mating part. When the guide release part moves toward the distal end to mate with the mating part, the guide release part can drive the mating part to rotate to release the limiting mating with the limiting part. The elastic impact component releases elastic energy to move toward the distal end to impact the ablation unit. After the impact, the drive component disconnects the drive connection from the impact seat.

[0012] The first reset elastic element is disposed between the elastic impact component and the limiting seat. When the elastic impact component moves toward the distal end, it drives the first reset elastic element to compress and store energy. After impact, the first reset elastic element drives the elastic impact component and the impact seat to move toward the proximal end to reset. The limiting seat is provided with a guide reset part corresponding to the mating part. When the elastic impact component moves toward the proximal end, the guide reset part cooperates with the mating part to drive the mating part to rotate and reset.

[0013] According to one embodiment of the present invention, the driving assembly is provided with a rotating output part, and the driving assembly can drive the rotating output part to rotate; the impact seat is provided with a helical transmission part at one end facing the proximal end, and the helical transmission part extends helically towards the proximal end;

[0014] The rotary output section is located on the helical transmission section. When the rotary output section rotates, it can move along the helical transmission section and drive the impact seat to move toward the far end through the helical transmission section. After the impact seat moves toward the far end to a preset stroke, the rotary output section leaves the helical transmission section, and the drive assembly disconnects from the impact seat.

[0015] According to one embodiment of the present invention, the device includes two helical drive units, and each helical drive unit is a helical blade. The two helical blades are of the same size and extend helically in the same helical direction, forming a circle.

[0016] The rotary output section includes a drive shaft, with its two ends respectively disposed on the two helical blades.

[0017] According to one embodiment of the present invention, the driving assembly includes a motor, the rotary output part includes an output seat, the output shaft of the motor is drivenly connected to the output seat, the output seat is disposed between the two helical blades, and the push shaft passes through the output seat with both ends extending out of the output seat.

[0018] According to one embodiment of the present invention, the device includes a housing, wherein the impact unit and the ablation unit are both disposed within the housing, the drive assembly and the ablation unit are fixedly connected to the housing, the impact seat is slidably connected to the housing, the limiting seat is slidably connected to the impact seat, and the limiting seat abuts against the ablation unit through the elastic impact assembly.

[0019] According to an embodiment of the present invention, the elastic impact assembly includes an impact member and an impact elastic member. The impact member is slidably connected to the impact seat and is rotatable relative to the impact seat. The impact elastic member is disposed between the impact seat and the impact member. A first reset elastic member is disposed between the impact member and the limiting seat. When the impact seat moves toward the distal end, it drives the impact elastic member to compress and store energy. The mating part is disposed on the impact member. The guide release part drives the mating part and the impact member to rotate to release the limiting fit between the mating part and the limiting part. The impact elastic member releases elastic energy to drive the impact member to slide toward the distal end to impact the ablation unit.

[0020] According to an embodiment of the present invention, the limiting seat is provided with a movable groove, and the movable groove includes a first moving groove, a limiting groove and a second moving groove in sequence toward the ablation unit. The first moving groove and the second moving groove extend along the axial direction of the impact member, and the limiting groove extends along the circumferential rotation direction of the impact member.

[0021] The limiting part is a limiting surface, the guiding and resetting part is a guiding and resetting surface, the limiting surface is the groove surface of the limiting groove near the ablation unit, the guiding and resetting surface is the groove surface of the limiting groove near the impact seat, the limiting surface extends along the circumferential rotation direction of the impact member, and the guiding and resetting surface is obliquely disposed towards the first moving groove.

[0022] The mating part is a mating shaft, which is disposed in the movable groove. When the mating shaft slides along the first moving groove to abut against the limiting surface, the impact member is limited. When the guide release part drives the mating shaft to rotate to the second moving groove, the impact member is released from limitation. When the impact member is reset, the mating shaft abuts against the guide reset surface and rotates to the first moving groove through the guidance of the guide reset surface.

[0023] According to an embodiment of the present invention, the impact seat is provided with a release groove, the mating shaft is disposed in the release groove, the guide release part is a guide release surface, the guide release surface is the groove surface of the release groove away from the ablation unit, and the guide release surface is obliquely disposed towards the second moving groove;

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

[0025] According to one embodiment of the present invention, the impact seat is an impact sleeve, the impact sleeve has a first mounting cavity, the limiting seat is a hollow limiting cap, the first mounting cavity is open at one end facing the limiting cap, and the end of the first mounting cavity away from the limiting cap has a sliding hole; the limiting cap passes through the open end of the first mounting cavity and is slidably connected to the first mounting cavity, and the end of the limiting cap is open at one end facing the impact sleeve and has a first impact hole at the end facing the ablation unit;

[0026] The impact member is disposed in the first mounting cavity of the impact sleeve and the limiting cap. One end of the impact member passes through and is 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 element is an impact spring, the first reset elastic element is a first reset spring, the impact element is provided with a separating flange, the impact spring is sleeved on the impact element and located between the separating flange and the inner wall of the first mounting cavity away from the limiting cap, one end of the impact spring abuts against the inner wall of the first mounting cavity away from the limiting cap, and the other end abuts against the separating flange.

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

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

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

[0031] According to one embodiment of the present invention, the impact sleeve has a second mounting cavity on the side of the first mounting cavity away from the limiting cap. The second mounting cavity has an opening on one side and communicates 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 disposed therein through the opening of the second mounting cavity and 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 reset elastic element. The elastic impact component impacts the ablation component and drives the second reset elastic element to compress and store energy. After the elastic impact component resets, the ablation component is reset by the second reset elastic element.

[0033] According to an embodiment of the present invention, the ablation assembly includes 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 disposed in the sliding seat, and the second reset elastic element is connected to the sliding seat.

[0034] The elastic impact component impacts the sliding seat through the first impact hole and the second impact hole, causing the sliding seat to slide towards the distal end and causing the second reset elastic element to compress and store energy, so that the ablation needle can impact the target tissue. After the elastic impact component is reset, the sliding seat and the ablation needle are reset by the second reset elastic element.

[0035] According to an embodiment of the present invention, the device includes an inlet pipe and a return pipe. The sliding seat is provided with an inlet and a return port. The ablation needle is provided with an inlet cavity and a return cavity. The inlet is connected to the inlet cavity and the inlet pipe. The return port is connected to the return cavity and the return pipe.

[0036] The inlet pipe is used to introduce coolant into the inlet chamber to cool the ablation needle, and the return pipe is used for the return flow of the coolant.

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

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

[0039] Furthermore, the inlet chamber and the return chamber are connected at the distal end of the ablation needle.

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

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

[0042] Because the present invention adopts the above technical solution, it has the following advantages and positive effects compared with the prior art:

[0043] 1. This invention utilizes an impact unit to impact an ablation unit, enabling the ablation unit to both ablate and impact calcifications. By cleverly integrating impact fragmentation and ablation techniques, this invention simultaneously leverages the powerful fragmentation effect of the impact unit and the precise ablation function of the ablation unit to provide comprehensive and effective treatment for the refractory disease of calcified uterine fibroids. This dual-action mechanism not only accelerates the decomposition of calcifications but also ensures a thorough and deep ablation process, significantly improving treatment outcomes and providing patients with a faster and better recovery experience.

[0044] The elastic impact component design used in this invention achieves a gentle yet 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 calcifications, reducing patient discomfort during treatment and improving the safety and comfort of treatment.

[0045] Furthermore, this invention cleverly utilizes the kinetic energy of the impact seat by releasing the elastic impact component through a guide release part, allowing it to impact the ablation unit. This enables the impact seat to not only compress the elastic impact component but also release it, maximizing energy utilization. This design not only simplifies the operation process but also improves energy conversion efficiency.

[0046] Furthermore, the driving component that drives the impact seat in this invention is intermittently connected to the impact seat. After the driving component drives the impact seat to move to a preset distance, it disconnects from the impact seat, ensuring that the reaction force after the impact is not transmitted to the driving component, housing, or other components. Combined with the elastic impact of the elastic impact component, the vibration caused by the impact can be reduced, improving the user experience while effectively enhancing stability and reliability. It 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 element and drives the elastic impact component and the impact seat to reset through the first reset elastic element. After the impact seat resets, the driving component reconnects to the impact seat, thereby achieving continuous impact. The reset is automated through the first reset elastic element, simplifying the operation process and utilizing the kinetic energy of the elastic impact component, thus improving energy conversion efficiency.

[0047] 2. The present invention converts the rotational motion of the drive assembly into the linear movement of the impact seat by using a rotary output part and a helical transmission part, which can reduce the drive stroke and reduce the overall size of the device, and the impact frequency can be increased by rotary drive. Attached Figure Description

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

[0049] Figure 1 is a schematic diagram of the overall invention;

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

[0051] Figure 3 is a partial enlarged view of Figure 2 of the present invention;

[0052] Figure 4 is a partial enlarged view of Figure 2 of the present invention;

[0053] Figure 5 is a partial enlarged view of Figure 2 of the present invention;

[0054] Figure 6 is a partial cross-sectional view of the present invention;

[0055] Figure 7 is a partial cross-sectional view of the present invention;

[0056] Figure 8 is a schematic diagram of the concealed shell of the present invention;

[0057] Figure 9 is a partial enlarged view of Figure 8 of the present invention;

[0058] Figure 10 is a frontal view of Figure 9 of the present invention;

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

[0060] Figure 12 is a partial enlarged view of Figure 11 of the present invention;

[0061] Figure 13 is an exploded view of the present invention;

[0062] Figure 14 is a schematic diagram of the limiting cap of the present invention;

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

[0064] Figure 15B is a schematic diagram of the mating shaft and the limiting surface of the present invention.

[0065] Figure 15C is a schematic diagram of the process by which the guide release surface of the present invention drives the mating shaft to rotate.

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

[0067] Explanation of reference numerals in the attached drawings: 100, Impact unit; 101, Main body shell; 102, Cover shell; 103, End cap; 104, Motor; 105, Push switch; 106, Push assembly; 107, Output seat; 108, Push shaft; 109, Impact sleeve; 110, Helical blade; 111, First slider; 112, Release groove; 113, Guide release surface; 114, Rifle; 115, Limiting head; 116, Separating flange; 117, Mating shaft; 118, Impact spring; 119, First return spring; 120, Plug; 121, Sliding hole; 122, Mounting hole; 123, Limiting... 124. Position cap; 125. Second slider; 126. Movable groove; 127. First moving groove; 128. Limiting groove; 129. Second moving groove; 130. Limiting surface; 201. Guide reset surface; 202. Ablation unit; 203. Needle seat shell; 204. Ablation needle; 205. Ablation seat; 206. Sliding seat; 207. Third slider; 208. Water inlet; 209. Water outlet; 210. Lead wire groove; 211. Inner tube; 212. Outer tube; 213. Needle tip; 214. Insulating tube; 215. Second reset spring; 216. Water inlet pipe; 217. Water outlet pipe. Detailed Implementation

[0068] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise ratios, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0069] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this embodiment of the invention are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly. In this embodiment of the invention, "proximal end" refers to the end closer to the operator, and "distal end" refers to the end farther away from the operator.

[0070] Referring to Figures 1 to 15, the core of this invention is to provide an impact ablation device for uterine fibroid surgery, particularly for treating calcified uterine fibroids. This device can both ablate and impact calcified uterine fibroids to pulverize the deposited calcifications. In other words, this invention combines impact fragmentation technology with ablation technology, aiming to achieve comprehensive and effective treatment of calcified uterine fibroids through a dual-action mechanism, providing an effective solution for treating diseases such as uterine fibroids, adenomyosis, and endometritis. Of course, this device can also be used for other diseases accompanied by calcifications; this embodiment does not specifically limit its application scope.

[0071] The impact ablation device includes an impact unit 100 located proximally and an ablation unit 200 located distally. The impact unit 100 impacts the ablation unit 200, and the ablation unit 200 ablates and / or impacts the target tissue. It also includes a housing, within which both the impact unit 100 and the ablation unit 200 are housed.

[0072] Specifically, the housing includes a needle handle shell and a needle seat shell 201. The impact unit 100 is disposed inside the needle handle shell, and the ablation unit 200 is disposed inside the needle seat shell 201. The needle handle shell and the needle seat shell 201 are made of materials such as ABS and PC, and are fixedly connected. The needle handle shell specifically includes a main body shell 101, a cover shell 102, and an end cap 103. The cover shell 102 is sealed and fitted onto the main body shell 101. The end cap 103 is disposed at the end of the needle handle shell away from the needle seat shell 201, and is sealed and connected to the main body shell 101 and the cover shell 102. A cavity is formed between the main body shell 101, the cover shell 102, and the end cap 103, and the cavity is open and communicates with the end facing the needle seat shell 201.

[0073] The impact unit 100 includes a drive assembly, an impact seat, an elastic impact assembly, a limiting seat, and a first reset elastic element. The limiting seat is located on the side of the impact seat facing the distal end. The drive assembly is fixedly connected to the needle handle housing, the impact seat is slidably connected to the needle handle housing, and the limiting seat is slidably connected to the impact seat.

[0074] The drive assembly is intermittently driven to the impact seat. After the drive assembly drives the impact seat to move to the far end to a preset stroke, it disconnects from the drive assembly. After the impact seat is reset, the drive assembly reconnects to the impact seat.

[0075] One end of the elastic impact component abuts against the impact seat. The elastic impact component has a mating part, and the limiting seat has a limiting part corresponding to the mating part. The limiting part and the mating part cooperate to limit the elastic impact component, so that when the impact seat moves toward the distal end, it can drive the elastic impact component to compress and store energy. The limiting seat abuts against the ablation unit 200 through the elastic impact component.

[0076] The impact seat is provided with a guide release part corresponding to the mating part. When the guide release part moves toward the distal end to mate with the mating part, the guide release part can drive the mating part to rotate to release the limiting mating with the limiting part. The elastic impact component releases elastic energy and moves toward the distal end to impact the ablation unit 200. After the impact, the drive component disconnects the drive connection from the impact seat.

[0077] The first reset elastic element is located between the elastic impact component and the limiting seat. When the elastic impact component moves toward the far end, it drives the first reset elastic element to compress and store energy. After the impact, the first reset elastic element drives the elastic impact component and the impact seat to move toward the near end to reset. The limiting seat is provided with a guide reset part with a corresponding mating part. When the elastic impact component moves toward the near end, the guide reset part and the mating part cooperate to drive the mating part to rotate and reset.

[0078] Specifically, the drive assembly has a rotary output section that can drive the rotary output section to rotate; a helical drive section is provided on the proximal end of the impact seat, extending helically towards the proximal end. The rotary output section is located on the helical drive section. When the rotary output section rotates, it can move along the helical drive section and drive the impact seat to move towards the distal end through the helical drive section. After the impact seat moves towards the distal end to a preset stroke, the rotary output section leaves the helical drive section, and the drive assembly disconnects from the impact seat.

[0079] This embodiment includes two helical drive units, and the helical drive unit is a helical blade 110. The two helical blades 110 are the same size and extend helically in the same helical direction. The two helical blades 110 form a circle. The rotation output unit includes a push shaft 108, and the two ends of the push shaft 108 are respectively disposed on the two helical blades 110.

[0080] In this embodiment, the driving component is a motor 104. The motor 104 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 drivenly connected to the output seat 107. The output seat 107 is located between two spiral blades 110. The push shaft 108 passes through the output seat 107 and its two ends extend out of the output seat 107 to be respectively located on the two spiral blades 110.

[0081] A push switch 105 is also installed inside the needle handle housing. The push switch 105 is electrically connected to the motor 104 and is used to control the start and stop of the motor 104. The cover 102 is also provided with a push kit 106 that communicates with the inside and outside and is connected to the push switch 105. The push switch 105 can be controlled by pressing the push kit 106.

[0082] The elastic impact assembly includes an impact member, an impact elastic member, and an impact seat. The impact member is slidably connected to the impact seat and can rotate relative to the impact seat. The impact elastic member is disposed between the impact seat and the impact member. A first reset elastic member is disposed between the impact member and the limiting seat. When the impact seat moves toward the distal end, it drives the impact elastic member to compress and store energy. A mating part is disposed on the impact member. A guide release part drives the mating part and the impact member to rotate to release the limiting fit between the mating part and the limiting part. The impact elastic member releases its elastic energy, causing the impact member to slide toward the distal end to impact the ablation unit 200.

[0083] The limiting seat is provided with a movable groove 125. The movable groove 125 includes a first moving groove 126, a limiting groove 127 and a second moving groove 128 in sequence facing the ablation unit 200. The first moving groove 126 and the second moving groove 128 extend along the axial direction of the impact member, and the limiting groove 127 extends along the circumferential rotation direction of the impact member.

[0084] The limiting part is the limiting surface 129, and the guiding and resetting part is the guiding and resetting surface 130. The limiting surface 129 is the groove surface of the limiting groove 127 near the ablation unit 200, and the guiding and resetting surface 130 is the groove surface of the limiting groove 127 near the impact seat. The limiting surface 129 extends along the circumferential rotation direction of the impact member, and the guiding and resetting surface 130 is obliquely set towards the first moving groove 126.

[0085] The mating part is a mating shaft 117, which is located in the movable groove 125. When the mating shaft 117 slides along the first moving groove 126 and abuts against the limiting surface 129, the impact member is limited. When the guide release part drives the mating shaft 117 to rotate to the second moving groove 128, the impact member is released from the limit. When the impact member is reset, the mating shaft 117 abuts against the guide reset surface 130 and rotates to the first moving groove 126 through the guidance of the guide reset surface 130.

[0086] The impact seat is provided with a release groove 112, and the mating shaft 117 is provided in the release groove 112. The guide release part is the guide release surface 113, which is the groove surface of the release groove 112 away from the ablation unit 200, and the guide release surface 113 is obliquely arranged towards the second moving 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 moving groove 128.

[0087] Specifically, in this embodiment, the impact seat is an impact sleeve 109. A plurality of first sliders 111 are evenly distributed on the outer wall of the impact sleeve 109, and a plurality of corresponding first sliding grooves are provided on the needle handle shell. The first sliders 111 are slidably connected within the first sliding grooves, so that the impact sleeve 109 and the needle handle shell are slidably connected. A first mounting cavity is provided inside the impact sleeve 109. The limiting seat is a hollow limiting cap 123. The first mounting cavity is open at one end facing the limiting cap 123, and a sliding hole 121 is provided at the end of the first mounting cavity away from the limiting cap 123. The impact element is a ram 114, made of 304 stainless steel, which can withstand enormous impact force. The limiting seat is a hollow limiting cap 123, which passes through the open end of the first mounting cavity and is slidably connected within the first mounting cavity. The limiting cap 123 is open at one end facing the impact sleeve 109 and has a first impact hole at the end facing the ablation unit 200. A plurality of second sliders 124 are evenly distributed on the outer wall of the limiting cap 123, and a plurality of corresponding second sliding grooves are provided on the inner wall of the impact sleeve 109. The second sliders 124 are slidably connected in the second sliding grooves so that the limiting cap 123 and the impact sleeve 109 are slidably connected.

[0088] A striker 114 is disposed within the first mounting cavity and the limiting cap 123 of the impact sleeve 109. One end of the striker 114 passes through and is slidably connected to the sliding hole 121. The striker 114 extends out of the first mounting cavity through the sliding hole 121, and a limiting head 115 is provided on the portion extending out of the first mounting cavity. The limiting head 115 is larger than the first mounting cavity and is used to limit the striker 114. The striker 114 extends out of the limiting cap 123 through the first impact hole to impact the ablation unit 200.

[0089] The impact elastic element is an impact spring 118, the first reset elastic element is a first reset spring 119, the ram 114 is provided with a separating flange 116, the impact spring 118 is sleeved on the ram 114 and located between the separating flange 116 and the inner wall of the first mounting cavity away from the limiting cap 123, one end of the impact spring 118 abuts against the inner wall of the first mounting cavity away from the limiting cap 123, and the other end abuts against the separating flange 116.

[0090] The first return spring 119 is sleeved on the striker 114 and located between the separating flange 116 and the inner wall of the limiting cap 123 away from the impact sleeve 109. One end of the first return spring 119 abuts against the inner wall of the limiting cap 123 away from the impact sleeve 109, and the other end abuts against the separating flange 116.

[0091] The mating shaft 117 passes through the partition flange 116, with both ends extending out of the partition flange 116. The movable groove 125 is provided on the side wall of the limiting cap 123, and each side of the limiting cap 123 is provided with a movable groove 125, with both ends of the mating shaft 117 respectively located in the two movable grooves 125.

[0092] The release groove 112 is provided on one end of the impact sleeve 109 facing the ablation unit 200, and there are two release grooves 112 respectively, located on both sides of the impact sleeve 109. The two ends of the mating shaft 117 are respectively located in the two release grooves 112.

[0093] Preferably, the first mounting cavity is provided with a mounting hole 122 at the end away from the limiting cap 123. 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 that of the limiting head 115. After the limiting head 115 extends out of the first mounting cavity through the mounting hole 122, the striker 114 is disposed in the sliding hole 121 through the connecting groove. The mounting hole 122 facilitates the installation of the striker 114.

[0094] Furthermore, the impact sleeve 109 has a second mounting cavity on the side of the first mounting cavity away from the limiting cap 123. The second mounting cavity has an opening on one side and communicates with the first mounting cavity through the mounting hole 122 and the sliding hole 121. A plug 120 is provided in the second mounting cavity. The plug 120 is located inside the opening of the second mounting cavity and abuts against the limiting head 115 to limit the impact pin 114 in the sliding hole 121 to prevent the impact pin 114 from shifting laterally and to ensure stability.

[0095] The ablation unit 200 includes an ablation component and a second reset elastic element. The elastic impact component impacts the ablation component and drives the second reset elastic element to compress and store energy. After the elastic impact component resets, the ablation component is reset by the second reset elastic element. The second reset elastic element can also play a buffering role to prevent damage to the ablation needle 202 caused by excessive impact force.

[0096] 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. The end of the ablation seat 203 facing the impact unit 100 has a second impact hole. The outer wall of the sliding seat 204 has several third sliders 205, and the inner wall of the ablation seat 203 has several corresponding third grooves. The third sliders 205 are slidably connected within the third grooves, allowing the sliding seat 204 to slidably connect with the ablation seat 203. The sliding seat 204 has a limiting shoulder. The end of the sliding seat 204 facing the impact unit 100 passes through the second impact hole, and the limiting shoulder prevents the sliding seat 204 from excessively moving towards the impact unit 100. The ablation needle 202 is fixed to the sliding seat 204. The distal end of the needle seat housing 201 is provided with a through hole. The ablation needle 202 passes through the through hole and exits the needle seat housing 201. The second reset elastic element is specifically the second reset spring 213. The second reset spring 213 is sleeved on the ablation needle 202 and its two ends abut against the sliding seat 204 and the inner wall of the distal end of the needle seat housing 201, respectively.

[0097] The striker 114 strikes the sliding seat 204 through the first impact hole and the second impact hole, causing the sliding seat 204 to slide toward the distal end and causing the second return spring 213 to compress and store energy, so that the ablation needle 202 can impact the target tissue. After the striker 114 is reset, the sliding seat 204 and the ablation needle 202 are reset by the second return spring 213.

[0098] The ablation assembly includes an inlet pipe 214 and a return pipe 215. The sliding seat 204 has an inlet port 206 and a return port 207. The ablation needle 202 has an inlet chamber and a return chamber. The inlet port 206 communicates with the inlet chamber and the inlet pipe 214, and the return port 207 communicates with the return chamber and the return pipe 215. The inlet pipe 214 is used to introduce coolant into the inlet chamber for cooling the ablation needle 202, and the return pipe 215 is used for the return flow of the coolant. The coolant is used for heat dissipation of the ablation needle 202 during ablation. It also includes a conductive cable, which is electrically connected to the ablation needle 202 for conducting electricity to the ablation needle 202 for ablation. The inlet pipe 214, the return pipe 215, and the conductive cable are all made of flexible material and have a certain length of allowance to accommodate the sliding seat 204. This ensures that the inlet pipe 214 and the return pipe 215 remain connected to the ablation needle 202 when the sliding seat 204 slides, and ensures the conductive cable is electrically connected to the ablation needle 202.

[0099] 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 and connect with the ablation needle 202.

[0100] Specifically, the ablation needle 202 includes an inner tube 209, an outer tube 210, a needle tip 211, and an insulating tube 212. Both the inner tube 209 and the outer tube 210 are fixedly connected to the sliding seat 204. The outer tube 210 is sleeved on the inner tube 209, and the insulating tube 212 is sleeved on the outer tube 210. The needle tip 211 is located at the distal end of the ablation needle 202 and is connected to either the inner tube 209 or the outer tube 210. The insulating tube 212 is fixedly connected to the needle seat housing 201 and serves as insulation for the ablation needle 202. The water inlet chamber is the inner cavity of the inner tube 209, and the water return chamber is the annular cavity between the inner tube 209 and the outer tube 210; alternatively, the water return chamber is the inner cavity of the inner tube 209, and the water inlet chamber is the annular cavity between the inner tube 209 and the outer tube 210. The water inlet chamber and the water return chamber are connected at the distal end of the ablation needle 202. The conductive cable is electrically connected to the outer tube 210.

[0101] The working process of this invention will be further explained below:

[0102] Referring to Figure 15A, the entire device is in its initial state, the motor 104 is not started, and the drive shaft 108 is in contact with the lowest end of the spiral blade 110.

[0103] Referring to Figure 15B, the motor 104 starts, driving the output seat 107 and the push shaft 108 to rotate. The two ends of the push shaft 108 slide along the two helical blades 110 respectively, pushing the impact sleeve 109 to slide towards the distal end, compressing the impact spring 118. At the same time, the mating shaft 117 slides in the first moving groove 126, and the guide release surface 113 on the impact sleeve 109 abuts against the mating shaft 117 on the ram 114. The mating shaft 117 abuts against the limiting surface 129.

[0104] Referring to Figure 15C, in the critical state, the push shaft 108 continues to slide upward along the spiral blade 110 and is about to complete a circumference. The impact sleeve 109 drives the mating shaft 117 and the ram 114 to rotate through the guide release surface 113, so that the mating shaft 117 rotates to the end of the limiting groove 127 near the second moving groove 128.

[0105] Referring to Figure 15D, the impact sleeve 109 drives the mating shaft 117 to rotate through the guide release surface 113 until it falls into the second moving groove 128. The impact spring 118 releases its elastic energy instantaneously, causing the striker 114 to move towards the distal end. The striker 114 impacts the sliding seat 204 through the first and second impact holes. Simultaneously, the mating shaft 117 moves towards the distal end within the second moving groove 128. As the striker 114 moves towards the distal end, it compresses the first reset elastic element. After the striker 114 impacts the sliding seat 204, it drives the sliding seat 204 and the ablation needle 202 to move towards the distal end, and the sliding seat 204 compresses the second reset elastic element. After the impact is complete, the striker 114 and the impact sleeve 109 are reset by the first reset elastic element, and the sliding seat 204 and the ablation needle 202 are reset by the second reset elastic element. After the impact is completed, the push shaft 108 rotates away from the spiral blade 110, disconnecting the drive connection with the impact sleeve 109. After the impact sleeve 109 moves towards the proximal end to reset, the push shaft 108 then abuts against the lowest end of the spiral blade 110.

[0106] This completes one impact cycle, returning to the initial state shown in Figure 15A. Thus, with the continuous rotation of motor 104, the ablation needle 202 can deliver continuous, cyclical impacts.

[0107] This invention utilizes an impact unit 100 to impact an ablation unit 200, enabling the ablation unit 200 to both ablate and impact calcifications. By cleverly integrating impact fragmentation and ablation techniques, this invention simultaneously leverages the powerful fragmentation effect of the impact unit 100 and the precise ablation function of the ablation unit 200 to provide comprehensive and effective treatment for the refractory disease of calcified uterine fibroids. This dual-action mechanism not only accelerates the decomposition of calcifications but also ensures a thorough and deep ablation process, significantly improving treatment outcomes and providing patients with a faster and better recovery experience.

[0108] The elastic impact component design adopted in this invention achieves a gentle yet powerful impact from the impact spring 118 by storing energy in the impact spring 118. This effectively avoids damage to the ablation needle 202 caused by direct rigid impact, extends the service life of the device, and at the same time, the ablation needle 202 can also flexibly impact the calcification lesions, reducing patient discomfort during treatment and improving the safety and comfort of treatment.

[0109] Furthermore, this invention cleverly utilizes the kinetic energy of the impact sleeve 109 by rotating the mating shaft 117 via the guide release surface 113 to release its limiting position. This allows the impact sleeve 109 to not only compress the impact spring 118 but also release the ramming pin 114, maximizing energy utilization. This design not only simplifies the operation process but also improves energy conversion efficiency.

[0110] Furthermore, the motor 104 that drives the impact sleeve 109 to move is intermittently driven to the impact sleeve 109 via a spiral blade 110. After the motor 104 drives the impact sleeve 109 to move to a preset distance, it disconnects from the impact sleeve 109, ensuring that the reaction force after impact is not transmitted to the motor 104, housing, or other components. Combined with the elastic impact of the elastic impact assembly, the vibration caused by the impact can be reduced, improving user experience while effectively enhancing stability and reliability. It also extends the service life of key components such as the motor 104 and reduces maintenance costs. After impact, the ram 114 compresses the first return spring 119, which in turn drives the ram 114 and the impact sleeve 109 to reset. After the impact sleeve 109 resets, the motor 104 reconnects to the impact seat, thus achieving continuous impact. The reset is automated by the first return spring 119, simplifying the operation process and utilizing the kinetic energy of the ram 114, thereby improving energy conversion efficiency. Furthermore, the present invention converts the rotational motion of the motor 104 into the linear movement of the impact seat by using the horizontally arranged push shaft 108 and helical blade 110, which can reduce the drive stroke and reduce the overall size of the device, and the impact frequency can be increased by rotational drive.

[0111] The embodiments of the present invention have been described in detail above with reference to 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 shall still fall within the protection scope of the present invention.

Claims

1. An impact ablation device, characterized in that, It includes an impact unit located at the proximal end and an ablation unit located at the distal end. 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 includes a drive assembly, an impact seat, an elastic impact assembly, a limiting seat, and a first reset elastic element. The limiting seat is located on the side of the impact seat facing the distal end. The drive assembly is intermittently driven connected to the impact seat. After the drive assembly drives the impact seat to move toward the far end to a preset stroke, it disconnects from the drive assembly. After the impact seat is reset, the drive assembly reconnects to the impact seat. One end of the elastic impact component abuts against the impact seat. The elastic impact component is provided with a mating part, and the limiting seat is provided with a limiting part corresponding to the mating part. The limiting part and the mating part cooperate to limit the elastic impact component so that when the impact seat moves toward the far end, it can drive the elastic impact component to compress and store energy. The impact seat is provided with a guide release part corresponding to the mating part. When the guide release part moves toward the distal end to mate with the mating part, the guide release part can drive the mating part to rotate to release the limiting mating with the limiting part. The elastic impact component releases elastic energy to move toward the distal end to impact the ablation unit. After the impact, the drive component disconnects the drive connection from the impact seat. The first reset elastic element is disposed between the elastic impact component and the limiting seat. When the elastic impact component moves toward the distal end, it drives the first reset elastic element to compress and store energy. After impact, the first reset elastic element drives the elastic impact component and the impact seat to move toward the proximal end to reset. The limiting seat is provided with a guide reset part corresponding to the mating part. When the elastic impact component moves toward the proximal end, the guide reset part cooperates with the mating part to drive the mating part to rotate and reset.

2. The impact ablation device according to claim 1, characterized in that, The drive assembly is provided with a rotary output section, which can drive the rotary output section to rotate; the impact seat is provided with a helical transmission section at one end facing the proximal end, which extends helically towards the proximal end; The rotary output section is located on the helical transmission section. When the rotary output section rotates, it can move along the helical transmission section and drive the impact seat to move toward the far end through the helical transmission section. After the impact seat moves toward the far end to a preset stroke, the rotary output section leaves the helical transmission section, and the drive assembly disconnects from the impact seat.

3. The impact ablation device according to claim 2, characterized in that, It includes two helical drive parts, and each helical drive part is a helical blade. The two helical blades are the same size and extend helically in the same helical direction, forming a circle. The rotary output section includes a drive shaft, with its two ends respectively disposed on the two helical blades.

4. The impact ablation device according to claim 3, characterized in that, The drive assembly includes a motor, the rotary output part includes an output seat, the output shaft of the motor is drivenly connected to the output seat, the output seat is located between the two helical blades, and the push shaft passes through the output seat with both ends extending out of the output seat.

5. The impact ablation device according to claim 1, characterized in that, The device includes a housing, in which the impact unit and the ablation unit are both disposed. The driving assembly and the ablation unit are fixedly connected to the housing. The impact seat is slidably connected to the housing. The limiting seat is slidably connected to the impact seat. The limiting seat abuts 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 member and an impact elastic member. The impact member is slidably connected to the impact seat and can rotate relative to the impact seat. The impact elastic member is disposed between the impact seat and the impact member. The first reset elastic member is disposed between the impact member and the limiting seat. When the impact seat moves toward the distal end, it drives the impact elastic member to compress and store energy. The mating part is disposed on the impact member. The guide release part drives the mating part and the impact member to rotate to release the limiting fit between the mating part and the limiting part. The impact elastic member releases elastic energy to drive the impact member 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, which includes a first moving groove, a limiting groove and a second moving groove in sequence facing the ablation unit. The first moving groove and the second moving groove extend along the axial direction of the impact member, and the limiting groove extends along the circumferential rotation direction of the impact member. The limiting part is a limiting surface, the guiding and resetting part is a guiding and resetting surface, the limiting surface is the groove surface of the limiting groove near the ablation unit, the guiding and resetting surface is the groove surface of the limiting groove near the impact seat, the limiting surface extends along the circumferential rotation direction of the impact member, and the guiding and resetting surface is obliquely disposed towards the first moving groove. The mating part is a mating shaft, which is disposed in the movable groove. When the mating shaft slides along the first moving groove to abut against the limiting surface, the impact member is limited. When the guide release part drives the mating shaft to rotate to the second moving groove, the impact member is released from limitation. When the impact member is reset, the mating shaft abuts against the guide reset surface and rotates to the first moving groove through the guidance of 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 mating shaft is provided in the release groove, the guide release part is a guide release surface, the guide release surface is the groove surface of the release groove away from the ablation unit, and the guide release surface is obliquely arranged towards the second moving groove; After the mating shaft abuts against the limiting surface, the guide release surface moves to abut against the mating shaft and guides 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, and the impact sleeve has a first mounting cavity. The limiting seat is a hollow limiting cap. The first mounting cavity is open at one end facing the limiting cap, and the end of the first mounting cavity away from the limiting cap has a sliding hole. The limiting cap passes through the open end of the first mounting cavity and is slidably connected to the first mounting cavity. The end of the limiting cap is open at the impact sleeve, and the end facing the ablation unit has a first impact hole. The impact member is disposed in the first mounting cavity of the impact sleeve and the limiting cap. One end of the impact member passes through and is 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 element is an impact spring, the first reset elastic element is a first reset spring, the impact element is provided with a separating flange, the impact spring is sleeved on the impact element and located between the separating flange and the inner wall of the first mounting cavity away from the limiting cap, one end of the impact spring abuts against the inner wall of the first mounting cavity away from the limiting cap, and the other end abuts against the separating flange. The first return spring is sleeved on the impact member and located between the separating flange and the inner wall of the limiting cap at the end away from the impact sleeve. One end of the first return spring abuts against the inner wall of the limiting cap at the end away from the impact sleeve, and the other end abuts against the separating flange.

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

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

12. The impact ablation device according to claim 11, characterized in that, The impact sleeve has a second mounting cavity on the side of the first mounting cavity away from the limiting cap. The second mounting cavity has an opening on one side and communicates 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 located inside the opening of the second mounting cavity and 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 reset elastic element. The elastic impact component strikes the ablation component and drives the second reset elastic element to compress and store energy. After the elastic impact component resets, the ablation component is reset by the second reset elastic element.

14. The impact ablation device according to claim 13, characterized in that, The ablation assembly includes 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 fixed to the sliding seat, and the second reset elastic element is connected to the sliding seat. The elastic impact component impacts the sliding seat through the first impact hole and the second impact hole, causing the sliding seat to slide towards the distal end and causing the second reset elastic element to compress and store energy, so that the ablation needle can impact the target tissue. After the elastic impact component is reset, the sliding seat and the ablation needle are reset by the second reset elastic element.

15. The impact ablation device according to claim 14, characterized in that, It includes an inlet pipe and a return pipe. The sliding seat is provided with an inlet and a return port. The ablation needle is provided with an inlet chamber and a return chamber. The inlet is connected to the inlet chamber and the inlet pipe. The return port is connected to the return chamber and the return pipe. The inlet pipe is used to introduce coolant into the inlet chamber to cool the ablation needle, and the return pipe is used for the return flow of the coolant.

16. The impact ablation device according to claim 15, characterized in that, The ablation needle includes an inner tube and an outer tube, both of which are fixedly connected to the sliding seat; The water inlet chamber is the inner cavity of the inner tube, and the water return chamber is an annular cavity between the inner tube and the outer tube, or the water return chamber is the inner cavity of the inner tube, and the water inlet chamber is an annular cavity between the inner tube and the outer tube; Furthermore, the inlet chamber and the return chamber 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, It includes a conductive cable, which is electrically connected to the ablation needle.

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

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