Pulse ablation clamping device

Abstract

The invention relates to the technical field of medical instruments, in particular to a pulse ablation clamping device which comprises a grab handle, a supporting tube, a first ablation clamp, a second ablation clamp, a driving cylinder, a first angle compensation mechanism and a second angle compensation mechanism. When the first angle compensation mechanism and the second angle compensation mechanism are disconnected with the driving cylinder, the driving cylinder drives the supporting tube to rotate substantially so as to drive the first ablation clamp and the second ablation clamp to rotate substantially, the operation flexibility is improved, and the angle adjusting efficiency is guaranteed. When the first angle compensation mechanism / the second angle compensation mechanism is in meshed connection with the outer wall of the driving cylinder, and the second angle compensation mechanism / the first angle compensation mechanism is disconnected from the driving cylinder, the first angle compensation mechanism / the second angle compensation mechanism drives the driving cylinder to perform small-amplitude rotation in the clockwise / anticlockwise direction; therefore, the rotation angle error is compensated, and the angle adjustment precision is guaranteed.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a pulse ablation clamping device. Background Technology

[0002] Pulsed electric field ablation technology releases intermittent, high-intensity pulsed electric fields on the order of microseconds to nanoseconds, causing irreversible electroporation of cell membranes, disrupting intracellular homeostasis, and leading to apoptosis. Because the electroporation threshold of cardiac cells is lower than that of surrounding tissues, myocardial tissue can be selectively ablated with minimal damage to surrounding normal tissues. A pulsed ablation clamping device is required during ablation.

[0003] The existing pulsed ablation clamping device includes a handle, a support tube, a first ablation clamp, and a second ablation clamp. One end of the support tube is fixedly connected to the handle. The first and second ablation clamps are respectively mounted on the ends of the support tube furthest from the handle. A first ablation electrode is provided on the first ablation clamp. A second ablation electrode is provided on the second ablation clamp. The second ablation electrode and the first ablation electrode form an ablation electrode assembly. The ablation electrode assembly is used to ablate abnormal tissue.

[0004] The existing technical solutions mentioned above have the following drawbacks: during ablation surgery, the tissue to be ablated may be located in multiple positions around the periphery of the support tube, and the support tube, the first ablation clamp, and the second ablation clamp can only be rotated by rotating the handle, which restricts the flexibility of the surgery. Summary of the Invention

[0005] To improve the flexibility of surgery, this application provides a pulse ablation clamping device.

[0006] This application provides a pulse ablation clamping device, which adopts the following technical solution: A pulse ablation clamping device, comprising: Handle; Support tube, one end of which is rotatably connected to the handle; The first ablation clamp is installed at the end of the support tube away from the handle and rotates with the support tube; the first ablation electrode is provided on the first ablation clamp. The second ablation clamp is installed at the end of the support tube away from the handle and rotates with the support tube; the second ablation clamp is matched with the first ablation clamp; the second ablation clamp is provided with a second ablation electrode that matches the first ablation electrode. The drive cylinder is sleeved on one end of the support tube near the handle, with its inner wall meshing with the outer wall of the support tube, and one end rotatably connected to the handle. The first angle compensation mechanism engages with or disconnects from the outer wall of the drive cylinder; The second angle compensation mechanism engages with or disconnects from the outer wall of the drive cylinder. When the first angle compensation mechanism and the second angle compensation mechanism are disconnected from the drive cylinder, the drive cylinder drives the support tube to rotate; when the first angle compensation mechanism / second angle compensation mechanism is engaged with the outer wall of the drive cylinder, and the second angle compensation mechanism / first angle compensation mechanism is disconnected from the drive cylinder, the first angle compensation mechanism / second angle compensation mechanism drives the drive cylinder to rotate in a clockwise / counterclockwise direction.

[0007] By adopting the above technical solution, when the first and second angle compensation mechanisms are connected to the drive cylinder, the rotation of the drive cylinder is restricted, thereby preventing the support tube, the first ablation clamp, and the second ablation clamp from rotating, ensuring the stability of the surgery. When the first and second angle compensation mechanisms are disconnected from the drive cylinder, the drive cylinder drives the support tube to rotate significantly, thereby driving the first and second ablation clamps to rotate significantly, improving the flexibility of the surgery and ensuring the efficiency of angle adjustment. When the first / second angle compensation mechanism is engaged with the outer wall of the drive cylinder, and the second / first angle compensation mechanism is disconnected from the drive cylinder, the drive cylinder can only rotate clockwise / counterclockwise. The first / second angle compensation mechanism drives the drive cylinder to rotate slightly clockwise / counterclockwise to compensate for rotation angle errors, ensuring the accuracy of angle adjustment and thus ensuring the precision of the ablation position.

[0008] This application further specifies that the first-angle compensation agency includes: The first housing is mounted on one side of the handle; The first rotating rod is rotatably mounted inside the first housing; The first input gear is sleeved on the first rotating rod; The first rotary knob is installed at the end of the first rotating rod away from the drive cylinder and is used to drive the first rotating rod to rotate. The second rotating rod is rotatably and axially movable and is installed in the first housing; The first transmission gear is sleeved on the second rotating rod and moves axially with the second rotating rod so that the side wall of the first transmission gear meshes with or disconnects from the side wall of the first input gear; the diameter of the first transmission gear is larger than that of the first input gear. The first output gear is sleeved on the second rotating rod and moves axially with the second rotating rod so that the side wall of the first output gear meshes with or disconnects from the outer wall of the drive cylinder; the diameter of the first output gear is smaller than the diameter of the drive cylinder. When the side wall of the first transmission gear meshes with the side wall of the first input gear, and the side wall of the first output gear meshes with the outer wall of the drive cylinder, the first input gear rotates with the first rotating rod, driving the first transmission gear, the second rotating rod, and the first output gear to rotate, thereby driving the drive cylinder to rotate in a clockwise direction. The second rotary knob is installed at the end of the second rotating rod away from the drive cylinder and is used to drive the second rotating rod to move axially. The first ratchet is fitted onto the second rotating rod; The first pawl is pivotally mounted inside the first housing, with its tip pressing against the side wall of the first ratchet to restrict the first ratchet from rotating in one direction, thereby restricting the second lever from rotating in one direction. The first elastic plate is installed inside the first housing, with one side pressing against the middle of the first pawl, so that the tip of the first pawl presses against the side wall of the first ratchet.

[0009] By adopting the above technical solution, the accuracy of angle adjustment is ensured.

[0010] This application is further configured such that the first housing is detachably connected to the handle.

[0011] By adopting the above technical solution, it is easier to disassemble and assemble the first housing, thereby facilitating the disassembly and assembly of the first angle compensation mechanism.

[0012] This application further specifies that the first-angle compensation mechanism also includes: The first bushing is installed inside the first housing, and its inner wall is in contact with the outer wall of the second rotating rod.

[0013] By adopting the above technical solution, the smoothness of the second rotating rod moving along the axial direction is improved, and the resistance to rotation is reduced.

[0014] This application further specifies that the first-angle compensation mechanism also includes: The first return spring is sleeved on the second rotating rod, with one end abutting against the first transmission gear and the other end abutting against the inner wall of the first housing.

[0015] By adopting the above technical solution, as the sidewall of the first transmission gear gradually disengages from the sidewall of the first input gear, the first return spring is gradually compressed. The force of the first return spring restoring its deformation drives the second rotating rod to move axially, thereby gradually engaging the sidewall of the first transmission gear with the sidewall of the first input gear. Furthermore, the first return spring prevents the first output gear from spontaneously disengaging from the drive cylinder, thus ensuring that the drive cylinder does not spontaneously rotate counterclockwise.

[0016] This application further specifies that the second-angle compensation agency includes: The second housing is detachably mounted on the other side of the handle; The third rotating rod is rotatably mounted inside the second housing; The second input gear is fitted onto the third rotating rod; The third rotary knob is installed at the end of the third rotating rod away from the drive cylinder and is used to drive the third rotating rod to rotate. The fourth rotating rod is rotatably and axially movable and is installed in the second housing; The second transmission gear is sleeved on the fourth rotating rod and moves axially with the fourth rotating rod so that the side wall of the second transmission gear meshes with or disconnects from the side wall of the second input gear; the diameter of the second transmission gear is larger than that of the second input gear. The second output gear is sleeved on the fourth rotating rod and moves axially with the fourth rotating rod so that the side wall of the second output gear meshes with or disconnects from the outer wall of the drive cylinder; the diameter of the second output gear is smaller than the diameter of the drive cylinder. When the side wall of the second transmission gear meshes with the side wall of the second input gear, and the side wall of the second output gear meshes with the outer wall of the drive cylinder, the second input gear rotates with the third rotating rod, driving the second transmission gear, the fourth rotating rod, and the second output gear to rotate, thereby driving the drive cylinder to rotate counterclockwise. The fourth rotary knob is installed at the end of the fourth rotating rod away from the drive cylinder and is used to drive the fourth rotating rod to move axially. The second ratchet is fitted onto the fourth lever; The second pawl is pivotally mounted inside the second housing, with its tip pressing against the side wall of the second ratchet to restrict the second ratchet from rotating in one direction, thereby restricting the fourth lever from rotating in one direction. The second elastic plate is installed inside the second housing, with one side pressing against the middle of the second pawl, so that the tip of the second pawl presses against the side wall of the second ratchet. The second bushing is installed inside the second housing, and its inner wall is in contact with the outer wall of the fourth rotating rod; The second return spring is sleeved on the fourth rotating rod, with one end abutting against the second transmission gear and the other end abutting against the inner wall of the second housing.

[0017] This application further includes: Terminal blocks are installed inside the handle; The conductive slip ring is installed inside the handle and is connected to the terminal block, the first ablation electrode, and the second ablation electrode via cables.

[0018] By adopting the above technical solution, when the support tube, the first ablation electrode, and the second ablation electrode rotate, the conductive slip ring can prevent the cables inside the support tube from tangling, thereby ensuring the stability of the electrical connection.

[0019] This application further specifies that the support tube is a rigid tube.

[0020] By adopting the above technical solution, it has strong rigidity and strength and is not easily deformed.

[0021] This application further specifies that the support tube is a plastic tube capable of producing plastic deformation.

[0022] By adopting the above technical solution, the support tube itself can undergo 360° torsional deformation, while the drive cylinder can drive the support tube to rotate 180°. Therefore, the maximum rotation angle of the first ablation clamp and the second ablation clamp can reach 540°, which improves the flexibility of the operation.

[0023] In summary, the beneficial technical effects of this application are as follows: 1. When the first and second angle compensation mechanisms are connected to the drive cylinder, rotation of the drive cylinder is restricted, thereby preventing rotation of the support tube, the first ablation clamp, and the second ablation clamp, ensuring the stability of the surgery. When the first and second angle compensation mechanisms are disconnected from the drive cylinder, the drive cylinder drives the support tube to rotate significantly, thereby driving the first and second ablation clamps to rotate significantly, improving the flexibility of the surgery and ensuring the efficiency of angle adjustment. When the first / second angle compensation mechanism is engaged with the outer wall of the drive cylinder, and the second / first angle compensation mechanism is disconnected from the drive cylinder, the drive cylinder can only rotate clockwise / counterclockwise. The first / second angle compensation mechanism drives the drive cylinder to rotate slightly clockwise / counterclockwise to compensate for rotation angle errors, ensuring the accuracy of angle adjustment and thus ensuring the precision of the ablation position.

[0024] 2. As the sidewall of the first transmission gear gradually disengages from the sidewall of the first input gear, the first return spring is gradually compressed. The force of the first return spring restoring its deformation drives the second rotating rod to move axially, thereby gradually engaging the sidewall of the first transmission gear with the sidewall of the first input gear. Furthermore, the first return spring prevents the first output gear from spontaneously disengaging from the drive cylinder, thus ensuring that the drive cylinder does not spontaneously rotate counterclockwise.

[0025] 3. As the sidewall of the second transmission gear gradually disengages from the sidewall of the second input gear, the second return spring is gradually compressed. The force of the second return spring restoring its deformation drives the fourth rotating rod to move axially, thereby gradually engaging the sidewall of the second transmission gear with the sidewall of the second input gear. Furthermore, the second return spring prevents the second output gear from spontaneously disengaging from the drive cylinder, thus ensuring that the drive cylinder does not spontaneously rotate clockwise.

[0026] 4. When the support tube, the first ablation electrode, and the second ablation electrode rotate, the conductive slip ring can prevent the cables inside the support tube from tangling, thereby ensuring the stability of the electrical connection. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an embodiment of the pulse ablation clamping device; Figure 2 yes Figure 1 An exploded view of the pulse ablation clamping device shown. Figure 3 yes Figure 1 A schematic diagram of the first angle compensation mechanism in the pulse ablation clamping device shown; Figure 4 yes Figure 1 A schematic diagram of the second angle compensation mechanism in the pulse ablation clamping device shown; Figure 5 This is a schematic diagram of another embodiment of the pulse ablation clamping device.

[0028] Reference numerals: 110, handle; 120, support tube; 130, first ablation clamp; 131, first ablation electrode; 140, second ablation clamp; 141, second ablation electrode; 150, drive cylinder; 160, first angle compensation mechanism; 161, first housing; 162, first rotating rod; 163, first input gear; 164, first rotary knob; 165, second rotating rod; 166, first transmission gear; 167, first output gear; 168, second rotary knob; 1691. 1692. First ratchet; 1693. First return spring; 170. Second angle compensation mechanism; 171. Second housing; 172. Third rotating rod; 173. Second input gear; 174. Third rotary knob; 175. Fourth rotating rod; 176. Second transmission gear; 177. Second output gear; 178. Fourth rotary knob; 1791. Second ratchet; 1792. Second pawl; 1793. Second return spring; 180. Terminal block; 190. Conductive slip ring. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0030] Reference Figure 1 and Figure 2This application discloses a pulsed ablation clamping device, including a handle 110, a support tube 120, a first ablation clamp 130, a second ablation clamp 140, a drive cylinder 150, a first angle compensation mechanism 160, and a second angle compensation mechanism 170. The handle 110 is for the operator to grip. One end of the support tube 120 is rotatably connected to the handle 110, and its interior communicates with the interior of the handle 110. The first ablation clamp 130 is mounted on the end of the support tube 120 away from the handle 110 and rotates with the support tube 120. Multiple first ablation electrodes 131 are provided on the first ablation clamp 130; the second ablation clamp 140 is mounted on the end of the support tube 120 away from the handle 110 and rotates with the support tube 120. The second ablation clamp 140 matches the first ablation clamp 130. Multiple second ablation electrodes 141 are provided on the second ablation clamp 140. Multiple second ablation electrodes 141 are matched one-to-one with multiple first ablation electrodes 131 to form an ablation electrode group. The ablation electrode group is electrically connected to the pulsed electric field ablation device via a cable. The pulsed electric field ablation device provides high-voltage electric pulses, which are applied to abnormal tissue through the ablation electrodes to induce necrosis of the abnormal tissue. The drive cylinder 150 is sleeved on the end of the support tube 120 near the handle 110, and its inner wall is engaged with the outer wall of the support tube 120 through meshing teeth. One end is rotatably connected to the handle 110. The first angle compensation mechanism 160 is engaged with or disconnected from the outer wall of the drive cylinder 150. The second angle compensation mechanism 170 is engaged with or disconnected from the outer wall of the drive cylinder 150. When the first angle compensation mechanism 160 and the second angle compensation mechanism 170 are respectively connected to the drive cylinder 150, the rotation of the drive cylinder 150 is restricted, thereby preventing the support tube 120, the first ablation clamp 130 and the second ablation clamp 140 from rotating, ensuring the stability of the operation. When the first angle compensation mechanism 160 and the second angle compensation mechanism 170 are disconnected from the drive cylinder 150, the drive cylinder 150 drives the support tube 120 to rotate significantly, thereby causing the first ablation clamp 130 and the second ablation clamp 140 to rotate significantly. This allows the first ablation clamp 130 and the second ablation clamp 140 to clamp tissues to be ablated in multiple directions, improving the flexibility of the surgery and ensuring the efficiency of angle adjustment. When the first angle compensation mechanism 160 is engaged with the outer wall of the drive cylinder 150, and the second angle compensation mechanism 170 is disconnected from the drive cylinder 150, the drive cylinder 150 can only rotate clockwise. The first angle compensation mechanism 160 drives the drive cylinder 150 to rotate slightly clockwise to compensate for rotation angle errors, achieving precise adjustment of the positions of the first ablation clamp 130 and the second ablation clamp 140, ensuring the accuracy of angle adjustment, and thus ensuring the accuracy of the ablation position.When the second angle compensation mechanism 170 is engaged with the outer wall of the drive cylinder 150, and the first angle compensation mechanism 160 is disconnected from the drive cylinder 150, the drive cylinder 150 can only rotate counterclockwise. The second angle compensation mechanism 170 drives the drive cylinder 150 to rotate slightly counterclockwise to compensate for the rotation angle error, thereby achieving the purpose of accurately adjusting the position of the first ablation clamp 130 and the second ablation clamp 140, ensuring the accuracy of the angle adjustment, and thus ensuring the accuracy of the ablation position.

[0031] Reference Figure 2 and Figure 3In one embodiment, the first angle compensation mechanism 160 includes a first housing 161, a first rotating rod 162, a first input gear 163, a first rotary knob 164, a second rotating rod 165, a first transmission gear 166, a first output gear 167, a second rotary knob 168, a first ratchet 1691, a first pawl 1692, a first elastic plate (not shown), a first bushing (not shown), and a first return spring 1693. The first housing 161 is detachably mounted on one side of the handle 110 to facilitate the assembly and disassembly of the first housing 161, thereby facilitating the assembly and disassembly of the first angle compensation mechanism 160. The first rotating rod 162 is rotatably mounted inside the first housing 161. The first input gear 163 is sleeved on the first rotating rod 162. The first rotary knob 164 is mounted on the end of the first rotating rod 162 away from the drive cylinder 150, and is used to drive the first rotating rod 162 to rotate, thereby driving the first input gear 163 to rotate. The axis of the second rotating rod 165 is parallel to the axis of the first rotating rod 162, and it is rotatably and axially movable within the first housing 161. A first transmission gear 166 is sleeved on the second rotating rod 165 and moves axially with the second rotating rod 165, so that the sidewall of the first transmission gear 166 engages or disengages with the sidewall of the first input gear 163. The diameter of the first transmission gear 166 is larger than that of the first input gear 163. A first output gear 167 is sleeved on the second rotating rod 165 and moves axially with the second rotating rod 165, so that the sidewall of the first output gear 167 engages or disengages with the outer wall of the drive cylinder 150. The diameter of the first output gear 167 is smaller than that of the drive cylinder 150. When the sidewall of the first transmission gear 166 meshes with the sidewall of the first input gear 163, and the sidewall of the first output gear 167 meshes with the outer wall of the drive cylinder 150, the first input gear 163 rotates with the first rotating rod 162, driving the first transmission gear 166, the second rotating rod 165, and the first output gear 167 to rotate, thereby causing the drive cylinder 150 to rotate slightly clockwise. This ensures the accuracy of angle adjustment. The second rotary knob 168 is installed at the end of the second rotating rod 165 away from the drive cylinder 150, and is used to drive the second rotating rod 165 to move axially, so that the sidewall of the first transmission gear 166 meshes with or disengages with the sidewall of the first input gear 163, and the sidewall of the first output gear 167 meshes with or disengages with the outer wall of the drive cylinder 150. The first ratchet 1691 is sleeved on the second rotating rod 165. The first pawl 1692 is pivotally mounted inside the first housing 161, with its tip pressing against the side wall of the first ratchet 1691 to restrict the first ratchet 1691 from rotating in one direction, thereby restricting the second lever 165 from rotating in one direction. A first elastic plate is mounted inside the first housing 161, with one side pressing against the middle of the first pawl 1692, causing the tip of the first pawl 1692 to press against the side wall of the first ratchet 1691.The first bushing is installed inside the first housing 161, with its inner wall contacting the outer wall of the second rotating rod 165. This improves the smoothness of the second rotating rod 165's axial movement and reduces the resistance to rotation. A first return spring 1693 is sleeved on the second rotating rod 165, with one end abutting against the first transmission gear 166 and the other end abutting against the inner wall of the first housing 161. As the side wall of the first transmission gear 166 gradually disengages from the side wall of the first input gear 163, the first return spring 1693 is gradually compressed. The force of the first return spring 1693 restoring its deformation drives the second rotating rod 165 to move axially, thereby gradually engaging the side wall of the first transmission gear 166 with the side wall of the first input gear 163. Furthermore, the first return spring 1693 prevents the first output gear 167 from spontaneously disengaging from the drive cylinder 150, thus ensuring that the drive cylinder 150 does not spontaneously rotate counterclockwise.

[0032] Preferably, the first housing 161 and the handle 110 are detachably connected by means of screwing, snap-fitting, or plugging.

[0033] Reference Figure 2 and Figure 4In one embodiment, the second angle compensation mechanism 170 includes a second housing 171, a third rotating rod 172, a second input gear 173, a third rotary knob 174, a fourth rotating rod 175, a second transmission gear 176, a second output gear 177, a fourth rotary knob 178, a second ratchet 1791, a second pawl 1792, a second elastic plate (not shown), a second bushing (not shown), and a second return spring 1793. The second housing 171 is detachably mounted on the other side of the handle 110 to facilitate the assembly and disassembly of the second housing 171, thereby facilitating the assembly and disassembly of the second angle compensation mechanism 170. The third rotating rod 172 is rotatably mounted inside the second housing 171. The second input gear 173 is sleeved on the third rotating rod 172. The third rotary knob 174 is mounted on the end of the third rotating rod 172 away from the drive cylinder 150, and is used to drive the third rotating rod 172 to rotate, thereby driving the second output gear 177 to rotate. The axis of the fourth rotating rod 175 is parallel to the axis of the third rotating rod 172, and it is rotatably and axially movable within the second housing 171. The second transmission gear 176 is sleeved on the fourth rotating rod 175 and moves axially with the fourth rotating rod 175, so that the sidewall of the second transmission gear 176 engages or disengages with the sidewall of the second input gear 173. The diameter of the second transmission gear 176 is larger than that of the second input gear 173. The second output gear 177 is sleeved on the fourth rotating rod 175 and moves axially with the fourth rotating rod 175, so that the sidewall of the second output gear 177 engages or disengages with the outer wall of the drive cylinder 150. The diameter of the second output gear 177 is smaller than that of the drive cylinder 150. When the sidewall of the second transmission gear 176 meshes with the sidewall of the second input gear 173, and the sidewall of the second output gear 177 meshes with the outer wall of the drive cylinder 150, the second input gear 173 rotates with the third rotating rod 172, driving the second transmission gear 176, the fourth rotating rod 175, and the second output gear 177 to rotate, thereby causing the drive cylinder 150 to rotate slightly counterclockwise. This ensures the accuracy of angle adjustment. The fourth rotary knob 178 is installed at the end of the fourth rotating rod 175 away from the drive cylinder 150, and is used to drive the fourth rotating rod 175 to move axially, so that the sidewall of the second transmission gear 176 meshes with or disengages with the sidewall of the second input gear 173, and the sidewall of the second output gear 177 meshes with or disengages with the outer wall of the drive cylinder 150. The second ratchet 1791 is sleeved on the fourth rotating rod 175. The second pawl 1792 is pivotally mounted inside the second housing 171, with its tip pressing against the side wall of the second ratchet 1791 to restrict the second ratchet 1791 from rotating in one direction, thereby restricting the fourth lever 175 from rotating in one direction. A second elastic plate is mounted inside the second housing 171, with one side pressing against the middle of the second pawl 1792, causing the tip of the second pawl 1792 to press against the side wall of the second ratchet 1791.The second bushing is installed inside the second housing 171, with its inner wall contacting the outer wall of the fourth rotating rod 175. This improves the smoothness of the fourth rotating rod 175's axial movement and reduces the resistance to rotation. The second return spring 1793 is sleeved on the fourth rotating rod 175, with one end abutting against the second transmission gear 176 and the other end abutting against the inner wall of the second housing 171. As the side wall of the second transmission gear 176 gradually disengages from the side wall of the second input gear 173, the second return spring 1793 is gradually compressed. The force of the second return spring 1793 restoring its deformation drives the fourth rotating rod 175 to move axially, thereby gradually engaging the side wall of the second transmission gear 176 with the side wall of the second input gear 173. Furthermore, the second return spring 1793 prevents the second output gear 177 from spontaneously disengaging from the drive cylinder 150, thus ensuring that the drive cylinder 150 does not spontaneously rotate clockwise.

[0034] Preferably, the second housing 171 and the handle 110 are detachably connected by means of screwing, snap-fitting, or plugging.

[0035] Reference Figure 2 In one embodiment, the pulse ablation clamping device further includes a terminal block 180 and a conductive slip ring 190. The terminal block 180 is installed within the handle 110 and is electrically connected to the pulse electric field ablation device via a cable. The conductive slip ring 190 is installed within the handle 110 and is electrically connected to the terminal block 180, the first ablation electrode 131, and the second ablation electrode 141 via cables. When the support tube 120, the first ablation electrode 131, and the second ablation electrode 141 rotate, the conductive slip ring 190 prevents the cables within the support tube 120 from becoming tangled, thereby ensuring the stability of the electrical connection.

[0036] In one embodiment, the support tube 120 is a rigid tube, which has strong rigidity and strength and is not easily deformed.

[0037] In another embodiment, such as Figure 5 As shown, the support tube 120 is a plastic tube capable of plastic deformation. The support tube 120 itself can undergo 360° torsional deformation, while the drive cylinder 150 can drive the support tube to rotate 180°. Therefore, the maximum rotation angle of the first ablation clamp 130 and the second ablation clamp 140 can reach 540°, effectively improving the flexibility of the operation.

[0038] The implementation principle of this embodiment is as follows: When the first angle compensation mechanism 160 and the second angle compensation mechanism 170 are respectively connected to the drive cylinder 150, the rotation of the drive cylinder 150 is restricted, thereby preventing the support tube 120, the first ablation clamp 130, and the second ablation clamp 140 from rotating, ensuring the stability of the operation. When the first angle compensation mechanism 160 and the second angle compensation mechanism 170 are disconnected from the drive cylinder 150, the drive cylinder 150 drives the support tube 120 to rotate significantly, thereby causing the first ablation clamp 130 and the second ablation clamp 140 to rotate significantly. This allows the first ablation clamp 130 and the second ablation clamp 140 to clamp the tissue to be ablated in multiple directions, improving the flexibility of the operation and ensuring the efficiency of angle adjustment. When the first angle compensation mechanism 160 is engaged with the outer wall of the drive cylinder 150, and the second angle compensation mechanism 170 is disengaged from the drive cylinder 150, the drive cylinder 150 can only rotate clockwise. The first angle compensation mechanism 160 drives the drive cylinder 150 to rotate slightly clockwise to compensate for rotation angle errors, thereby achieving precise adjustment of the positions of the first ablation clamp 130 and the second ablation clamp 140, ensuring the accuracy of angle adjustment and thus the accuracy of the ablation position. When the second angle compensation mechanism 170 is engaged with the outer wall of the drive cylinder 150, and the first angle compensation mechanism 160 is disengaged from the drive cylinder 150, the drive cylinder 150 can only rotate counterclockwise. The second angle compensation mechanism 170 drives the drive cylinder 150 to rotate slightly counterclockwise to compensate for rotation angle errors, thereby achieving precise adjustment of the positions of the first ablation clamp 130 and the second ablation clamp 140, ensuring the accuracy of angle adjustment and thus the accuracy of the ablation position.

[0039] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A pulse ablation clamping device, characterized in that, include: Handle (110); A support tube (120) is rotatably connected at one end to the handle (110); A first ablation clamp (130) is installed at the end of the support tube (120) away from the handle (110) and rotates with the support tube (120); a first ablation electrode (131) is provided on the first ablation clamp (130); The second ablation clamp (140) is installed at the end of the support tube (120) away from the handle (110) and rotates with the support tube (120); the second ablation clamp (140) matches the first ablation clamp (130); the second ablation clamp (140) is provided with a second ablation electrode (141) that matches the first ablation electrode (131); A drive cylinder (150) is sleeved on one end of the support tube (120) near the handle (110), with its inner wall meshing with the outer wall of the support tube (120), and one end rotatably connected to the handle (110). The first angle compensation mechanism (160) is engaged or disconnected from the outer wall of the drive cylinder (150); The second angle compensation mechanism (170) is engaged or disconnected from the outer wall of the drive cylinder (150); When the first angle compensation mechanism (160) and the second angle compensation mechanism (170) are disconnected from the drive cylinder (150), the drive cylinder (150) drives the support tube (120) to rotate; when the first angle compensation mechanism (160) / the second angle compensation mechanism (170) are engaged with the outer wall of the drive cylinder (150), and the second angle compensation mechanism (170) / the first angle compensation mechanism (160) are disconnected from the drive cylinder (150), the first angle compensation mechanism (160) / the second angle compensation mechanism (170) drives the drive cylinder (150) to rotate in a clockwise / counterclockwise direction.

2. The pulse ablation clamping device according to claim 1, characterized in that, The first angle compensation mechanism (160) includes: The first housing (161) is mounted on one side of the handle (110); The first rotating rod (162) is rotatably mounted inside the first housing (161); The first input gear (163) is sleeved on the first rotating rod (162); A first rotary knob (164) is installed at the end of the first rotating rod (162) away from the drive cylinder (150) to drive the first rotating rod (162) to rotate; The second rotating rod (165) is rotatably and axially movable inside the first housing (161); The first transmission gear (166) is sleeved on the second rotating rod (165) and moves axially with the second rotating rod (165) so that the side wall of the first transmission gear (166) meshes with or disconnects from the side wall of the first input gear (163); the diameter of the first transmission gear (166) is larger than that of the first input gear (163). The first output gear (167) is sleeved on the second rotating rod (165) and moves axially with the second rotating rod (165) so that the side wall of the first output gear (167) meshes with or disconnects from the outer wall of the drive cylinder (150); the diameter of the first output gear (167) is smaller than the diameter of the drive cylinder (150). When the side wall of the first transmission gear (166) meshes with the side wall of the first input gear (163), and the side wall of the first output gear (167) meshes with the outer wall of the drive cylinder (150), the first input gear (163) rotates with the first rotating rod (162), causing the first transmission gear (166), the second rotating rod (165), and the first output gear (167) to rotate, thereby causing the drive cylinder (150) to rotate clockwise. The second rotary knob (168) is installed at the end of the second rotating rod (165) away from the drive cylinder (150) and is used to drive the second rotating rod (165) to move axially. The first ratchet (1691) is fitted onto the second rotating rod (165); The first pawl (1692) is pivotally mounted inside the first housing (161), with the pawl tip pressing against the side wall of the first ratchet (1691) to restrict the first ratchet (1691) from rotating in one direction, thereby restricting the second rotating rod (165) from rotating in one direction. The first elastic plate is installed inside the first housing (161), and one side of it abuts against the middle of the first pawl (1692), so that the pawl tip of the first pawl (1692) abuts against the side wall of the first ratchet (1691).

3. The pulse ablation clamping device according to claim 2, characterized in that, The first housing (161) is detachably connected to the handle (110).

4. The pulse ablation clamping device according to claim 2, characterized in that, The first angle compensation mechanism (160) further includes: The first bushing is installed inside the first housing (161), and its inner wall is in contact with the outer wall of the second rotating rod (165).

5. The pulse ablation clamping device according to claim 2, characterized in that, The first angle compensation mechanism (160) further includes: The first return spring (1693) is sleeved on the second rotating rod (165), with one end abutting against the first transmission gear (166) and the other end abutting against the inner wall of the first housing (161).

6. The pulse ablation clamping device according to any one of claims 1 to 5, characterized in that, The second angle compensation mechanism (170) includes: The second housing (171) is detachably mounted on the other side of the handle (110); The third rotating rod (172) is rotatably mounted inside the second housing (171); The second input gear (173) is sleeved on the third rotating rod (172); The third rotary knob (174) is installed at the end of the third rotating rod (172) away from the drive cylinder (150) and is used to drive the third rotating rod (172) to rotate. The fourth rotating rod (175) is rotatably and axially movable within the second housing (171); The second transmission gear (176) is sleeved on the fourth rotating rod (175) and moves axially with the fourth rotating rod (175) so that the side wall of the second transmission gear (176) meshes with or disconnects from the side wall of the second input gear (173); the diameter of the second transmission gear (176) is larger than that of the second input gear (173). The second output gear (177) is sleeved on the fourth rotating rod (175) and moves axially with the fourth rotating rod (175) so that the side wall of the second output gear (177) meshes with or disconnects from the outer wall of the drive cylinder (150); the diameter of the second output gear (177) is smaller than the diameter of the drive cylinder (150); When the side wall of the second transmission gear (176) meshes with the side wall of the second input gear (173), and the side wall of the second output gear (177) meshes with the outer wall of the drive cylinder (150), the second input gear (173) rotates with the third rotating rod (172), causing the second transmission gear (176), the fourth rotating rod (175), and the second output gear (177) to rotate, thereby causing the drive cylinder (150) to rotate counterclockwise. The fourth rotary knob (178) is installed at the end of the fourth rotating rod (175) away from the drive cylinder (150) and is used to drive the fourth rotating rod (175) to move axially. The second ratchet (1791) is sleeved on the fourth rotating rod (175); The second pawl (1792) is pivotally mounted inside the second housing (171), with its tip pressing against the side wall of the second ratchet (1791) to restrict the second ratchet (1791) from rotating in one direction, thereby restricting the fourth lever (175) from rotating in one direction. The second elastic plate is installed inside the second housing (171), and one side of it presses against the middle of the second pawl (1792), so that the pawl tip of the second pawl (1792) presses against the side wall of the second ratchet (1791). The second bushing is installed inside the second housing (171), and its inner wall is in contact with the outer wall of the fourth rotating rod (175); The second return spring (1793) is sleeved on the fourth rotating rod (175), with one end abutting against the second transmission gear (176) and the other end abutting against the inner wall of the second housing (171).

7. The pulse ablation clamping device according to any one of claims 1 to 5, characterized in that, Also includes: A terminal block (180) is installed inside the handle (110); A conductive slip ring (190) is installed inside the handle (110) and is connected to the terminal block (180), the first ablation electrode (131), and the second ablation electrode (141) via cables.

8. The pulse ablation clamping device according to any one of claims 1 to 5, characterized in that, The support tube (120) is a rigid tube.

9. The pulse ablation clamping device according to any one of claims 1 to 5, characterized in that, The support tube (120) is a plastic tube capable of plastic deformation.

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