A pull-ring type pulsed ablation clamp device

Abstract

The application relates to the technical field of medical devices, in particular to a pull ring type pulse ablation clamping device which comprises an operating handle, a sleeve, first ablation clamp pliers, a transmission assembly, second ablation clamp pliers and a driving ring. The operating handle is convenient for a surgeon to control the pull ring type pulse ablation clamping device. When the second ablation clamp pliers are close to the first ablation clamp pliers, a plurality of first ablation electrodes and a plurality of second ablation electrodes form an ablation electrode group, which is used to complete a pulse electric field ablation operation. When the pulse electric field ablation operation is performed, the surgeon can operate the operating handle and the driving ring with one hand, accurately adjust the distance between the second ablation clamp pliers and the first ablation clamp pliers by using the driving ring and the transmission assembly, avoid the distance between the ablation clamp pliers being too large or too small, and further avoid the ablation operation failure or tissue damage.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a pull-ring type 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] Existing pulse ablation clamping devices include a handle, a cannula, a fixed ablation clamp, and a movable ablation clamp. One end of the cannula is fixedly connected to the handle. One end of the fixed ablation clamp is fixedly connected to the end of the cannula furthest from the handle. The movable ablation clamp is movably mounted on the end of the cannula furthest from the handle, either towards or away from the fixed ablation clamp. A first ablation electrode is provided on the fixed ablation clamp. A second ablation electrode is provided on the movable ablation clamp. The second ablation electrode and the first ablation electrode form an ablation electrode assembly.

[0004] The existing technical solutions described above have the following drawbacks: the adjustment accuracy is low when adjusting the distance between the fixed ablation clamp and the movable ablation clamp, which makes the distance between the fixed ablation clamp and the movable ablation clamp too large or too small, resulting in ablation failure or tissue damage. Summary of the Invention

[0005] To avoid ablation failure or tissue damage, this application provides a pull-ring type pulse ablation clamping device.

[0006] This application provides a pull-ring type pulse ablation clamping device, which adopts the following technical solution:

[0007] A pull-ring type pulse ablation clamping device, comprising:

[0008] operating handle;

[0009] The sleeve is fixedly installed on the operating handle at one end, and its interior is connected to the interior of the operating handle.

[0010] The first ablation clamp is fixedly installed at the end of the cannula away from the operating handle; the first ablation clamp is provided with a first ablation electrode.

[0011] The transmission assembly is axially movable and installed inside the sleeve and the operating handle;

[0012] The second ablation clamp is installed on the transmission assembly near one end of the first ablation clamp and can move towards or away from the first ablation clamp along with the transmission assembly; the second ablation clamp is matched with the first ablation clamp; and the second ablation clamp is provided with a second ablation electrode matched with the first ablation electrode.

[0013] The driving ring is sleeved on the operation handle and connected with the transmission assembly and can move in the axial direction to drive the transmission assembly to move towards or away from the first ablation clamp.

[0014] By adopting the above technical scheme, when the pulse electric field ablation operation is performed, the operator can operate the operation handle and the driving ring with one hand, and the distance between the second ablation clamp and the first ablation clamp can be accurately adjusted by using the driving ring and the transmission assembly, so that the distance between the ablation clamps is prevented from being too large or too small, and thus the ablation operation failure or the tissue damage is avoided.

[0015] The application is further provided with that the inner walls on the opposite sides of the driving ring are respectively formed with driving racks;

[0016] The transmission assembly comprises:

[0017] The transmission gears are two and are respectively rotatably installed on the opposite sides of the operation handle and are respectively meshed and connected with the driving racks on the corresponding sides;

[0018] The transmission racks are arranged in the operation handle and are respectively meshed and connected with the transmission gears on the corresponding sides;

[0019] The transmission rod is arranged in the operation handle and the sleeve and is fixedly connected at one end with the transmission rack and detachably connected at the other end with one end of the second ablation clamp;

[0020] The reset spring is sleeved on the outer wall of the transmission rod.

[0021] By adopting the above technical scheme, when the driving ring moves away from the first ablation clamp, the transmission gears can be driven to rotate, and thus the transmission rack, the transmission rod and the second ablation clamp are driven to move towards the first ablation clamp, and in this process, the reset spring is gradually compressed. With the force of the reset spring recovering the deformation, the driving ring can be driven to spontaneously move towards the first ablation clamp to reset the second ablation clamp. By adopting the gear transmission mode, the transmission efficiency can reach more than 96%, the transmission ratio remains constant, the accuracy and stability of the movement of the second ablation clamp are guaranteed, and thus the distance between the second ablation clamp and the first ablation clamp can be accurately controlled, and the ablation operation failure or the tissue damage is avoided. Moreover, the transmission assembly as a whole occupies a smaller space.

[0022] The application is further provided with that the application further comprises:

[0023] The limiting ring is installed in the operating handle and has a clearance hole in the middle for the transmission rod to pass through;

[0024] The side wall of the transmission rod is formed with a limiting block matched with the limiting ring.

[0025] By using the above technical scheme, when the transmission rod moves away from the first ablation clamp, the limiting block gradually presses on the limiting ring to limit the continuous movement of the transmission rod.

[0026] The present application is further provided that: the end of the operating handle away from the sleeve is formed with a thumb wearing ring; the outer wall of one side of the driving ring is formed with an index finger wearing ring, and the outer wall of the other side is formed with a middle finger wearing ring.

[0027] By using the above technical scheme, the thumb wearing ring is worn by the thumb of the operator. The index finger wearing ring is worn by the index finger of the operator. The middle finger wearing ring is worn by the middle finger of the operator, so as to facilitate single-handed operation of the pull ring type pulse ablation clamping device.

[0028] The present application is further provided that: the inner wall of the end of the driving ring away from the sleeve is formed with a clamping groove;

[0029] Further comprising:

[0030] The clamping block is movably installed on the operating handle and can be matched with the clamping groove to limit the movement of the driving ring.

[0031] The lifting block is movably installed in the operating handle, and the top end is fixedly connected with the bottom end of the clamping block.

[0032] The jacking spring is installed in the operating handle, and the top end is fixedly connected with the lifting block.

[0033] The unlocking button is movably installed on the operating handle, and the bottom end is fixedly connected with the top end of the lifting block.

[0034] The present application is further provided that: the inside of the operating handle is formed with a mounting cavity for mounting electronic components.

[0035] The present application is further provided that: the end of the operating handle away from the sleeve is formed with an adjusting screw hole;

[0036] The adjusting screw is screwed in the middle of the adjusting screw hole, and one end is pressed against the end of the transmission rack away from the transmission rod, and the other end extends to the outside of the operating handle.

[0037] By adopting the technical scheme, the driving ring is first driven to move away from the first ablation clamp, so that the second ablation clamp gradually approaches the first ablation clamp, and the distance between the second ablation clamp and the first ablation clamp is coarsely adjusted. Then, the adjusting screw is driven to rotate, so that the second ablation clamp continues to approach the first ablation clamp, and the distance between the second ablation clamp and the first ablation clamp is finely adjusted. In this way, the distance between the second ablation clamp and the first ablation clamp can be controlled to be in the order of millimeters, and the distance adjustment accuracy is greatly improved.

[0038] The application is further provided as follows:

[0039] The first bellows is internally stored with working medium, is arranged in the operating handle, and is fixedly connected at one end to one end of the transmission rack and at the other end to one end of the operating handle away from the sleeve;

[0040] The second bellows is internally stored with working medium, is arranged in the operating handle, and is fixedly connected at one end to the other end of the transmission rack and at the other end to one end of the operating handle close to the sleeve;

[0041] The first one-way valve is installed in the transmission rack, has a communication inlet with the first bellows, and has a communication outlet with the second bellows through the first electromagnetic on-off valve;

[0042] The second one-way valve is installed in the transmission rack, has a communication inlet with the second bellows, and has a communication outlet with the first bellows through the second electromagnetic on-off valve;

[0043] The controller is installed in the operating handle and is connected with the first electromagnetic on-off valve and the second electromagnetic on-off valve;

[0044] The first control button is installed on the operating handle and is connected with the controller;

[0045] The second control button is installed on the operating handle and is connected with the controller.

[0046] By adopting the technical scheme, when the driving ring moves away from the first ablation clamp, the second electromagnetic on-off valve is opened, and the first electromagnetic on-off valve is in a closed state, the volume of the second bellows gradually decreases, and the volume of the first bellows gradually increases, a part of the working medium in the second bellows gradually flows into the first bellows, so that the force exerted by the second bellows on the transmission rack is the same as the force exerted by the first bellows on the transmission rack, further ensuring the stability of the position of the transmission rack, and further ensuring the stability of the distance between the second ablation clamp and the first ablation clamp. After the second ablation clamp is moved to the position, the first bellows and the second bellows can not only limit the spontaneous movement of the transmission rack, but also have a certain buffering effect, so as to avoid damage to the tissue caused by hand shaking during operation.

[0047] To sum up, the beneficial technical effects of the application are:

[0048] 1. The operator can operate the handle and the driving ring with one hand during the pulse field ablation operation, and the distance between the second ablation clamp and the first ablation clamp can be accurately adjusted by the driving ring and the transmission assembly, so that the distance between the ablation clamps is neither too large nor too small, and the ablation operation is not failed or the tissue is not damaged.

[0049] 2. The transmission efficiency can reach more than 96% by adopting the gear transmission mode, the transmission ratio is kept constant, the accuracy and stability of the movement of the second ablation clamp are ensured, and the distance between the second ablation clamp and the first ablation clamp can be accurately controlled, so that the ablation operation is not failed or the tissue is not damaged. Moreover, the transmission assembly occupies a smaller space.

[0050] 3. The driving ring is first moved away from the first ablation clamp to gradually move the second ablation clamp close to the first ablation clamp, and then the adjusting bolt is driven to rotate to continue moving the second ablation clamp close to the first ablation clamp, so that the distance between the second ablation clamp and the first ablation clamp can be controlled to the millimeter level, and the distance adjustment accuracy is greatly improved.

[0051] 4. When the driving ring moves away from the first ablation clamp, the volume of the second bellows gradually decreases, and the volume of the first bellows gradually increases, a part of the working medium in the second bellows gradually flows into the first bellows, so that the force exerted by the second bellows on the transmission rack is the same as the force exerted by the first bellows on the transmission rack, and the stability of the position of the transmission rack is further ensured. When the second ablation clamp is moved into position, the first bellows and the second bellows can not only limit the spontaneous movement of the transmission rack, but also have a certain buffering effect, so as to avoid damage to the tissue caused by hand shaking during operation. BRIEF DESCRIPTION OF DRAWINGS

[0052] Figure 1 is a structural schematic view of an embodiment of the pull ring type pulse ablation clamping device;

[0053] Figure 2 is Figure 1 the cross-sectional view of the pull ring type pulse ablation clamping device shown in

[0054] Figure 3 is Figure 2 the local enlarged view of the A area in

[0055] Figure 4 is Figure 2 the local enlarged view of the B area in

[0056] Figure 5 isFigure 2 Partial enlarged view of area C in the middle;

[0057] Figure 6 is another embodiment of the pull-ring type pulse ablation clamping device in axial section view;

[0058] Figure 7 is still another embodiment of the pull-ring type pulse ablation clamping device in axial section view;

[0059] Figure 8 is Figure 7 Partial enlarged view of area D in the middle.

[0060] Fig. 110, operating handle; 111, accommodating cavity; 112, mounting cavity; 113, adjusting screw hole; 114, thumb wearing ring; 120, sleeve; 130, first ablation clamp; 140, transmission assembly; 141, transmission gear; 142, transmission rack; 143, transmission rod; 1431, limiting block; 144, return spring; 150, second ablation clamp; 151, connecting rod; 160, driving ring; 161, driving rack; 162, index finger wearing ring; 163, middle finger wearing ring; 164, clamping groove; 171, clamping block; 172, lifting block; 173, jacking spring; 174, unlocking button; 175, limiting ring; 180, adjusting bolt; 191, first bellows; 192, second bellows; 193, first one-way valve; 194, first electromagnetic on-off valve; 195, second one-way valve; 196, second electromagnetic on-off valve; 197, controller. DETAILED DESCRIPTION

[0061] The following will be described in detail in combination with the accompanying drawings. Figures 1-8 The present application is further described in detail.

[0062] Reference will be made to Figure 1 and Figure 2The embodiment of the application discloses a pull ring type pulse ablation clamping device, which comprises an operating handle 110, a sleeve 120, a first ablation clamp 130, a transmission assembly 140, a second ablation clamp 150 and a driving ring 160. The operating handle 110 facilitates the operator to control the pull ring type pulse ablation clamping device. The interior of the operating handle 110 is formed with a containing cavity 111. One end of the sleeve 120 is fixedly installed on the operating handle 110, and the interior of the sleeve 120 is in communication with the containing cavity 111 in the interior of the operating handle 110. One end of the first ablation clamp 130 is fixedly installed on the end of the sleeve 120 away from the operating handle 110. A first ablation electrode is arranged on the first ablation clamp 130. The transmission assembly 140 is movably installed in the interiors of the sleeve 120 and the operating handle 110 in the axial direction. One end of the second ablation clamp 150 is installed on the end of the transmission assembly 140 close to the first ablation clamp 130, and the second ablation clamp 150 can move towards or away from the first ablation clamp 130 along with the transmission assembly 140. The second ablation clamp 150 is matched with the first ablation clamp 130. A second ablation electrode matched with the first ablation electrode is arranged on the second ablation clamp 150. It should be noted that when the first ablation electrode is a positive ablation electrode, the second ablation electrode is a negative ablation electrode. When the first ablation electrode is a negative ablation electrode, the second ablation electrode is a positive ablation electrode. Both the first ablation electrode and the second ablation electrode are multiple, and can be electrically connected with an external pulse power supply or pulse ablation instrument. When the second ablation clamp 150 is close to the first ablation clamp 130, the multiple first ablation electrodes and the multiple second ablation electrodes form an ablation electrode group, which is used for completing a pulse electric field ablation operation. The driving ring 160 is sleeved on the operating handle 110 and connected with the transmission assembly 140, and can move in the axial direction to drive the transmission assembly 140 to move towards or away from the first ablation clamp 130. During the pulse electric field ablation operation, the operator can operate the operating handle 110 and the driving ring 160 with one hand, and accurately adjust the distance between the second ablation clamp 150 and the first ablation clamp 130 by using the driving ring 160 and the transmission assembly 140, so that the distance between the ablation clamps is prevented from being too large or too small, and thus the ablation operation failure or tissue damage is avoided.

[0063] Reference Figure 2 , Figure 3 and Figure 4The inner wall of the driving ring 160 on the opposite side is provided with a driving rack 161. The two ends of the driving rack 161 on each side extend along the axial direction of the driving ring 160. The transmission assembly 140 includes two transmission gears 141, a transmission rack 142, a transmission rod 143, and a return spring 144. The two transmission gears 141 are rotatably installed on the opposite sides of the handle 110. The two transmission gears 141 are in meshing connection with the corresponding side of the driving rack 161. The transmission rack 142 is arranged in the handle 110 and is in meshing connection with the corresponding side of the transmission gear 141. The transmission rod 143 is arranged in the handle 110 and the sleeve 120, one end of which is fixedly connected with one end of the transmission rack 142, and the other end is detachably connected with one end of the second ablation clamp 150. The return spring 144 is arranged on the outer wall of the transmission rod 143. When the driving ring 160 moves away from the first ablation clamp 130, the transmission gear 141 is driven to rotate, thereby driving the transmission rack 142, the transmission rod 143, and the second ablation clamp 150 to move towards the first ablation clamp 130. In this process, the return spring 144 is gradually compressed. With the force of the return spring 144 recovering the deformation, the driving ring 160 is driven to move towards the first ablation clamp 130, so as to reset the second ablation clamp 150. The transmission efficiency can reach more than 96% by using the gear transmission mode, the transmission ratio remains constant, which ensures the accuracy and stability of the movement of the second ablation clamp 150, thereby ensuring that the distance between the second ablation clamp 150 and the first ablation clamp 130 can be accurately controlled, avoiding the failure of the ablation surgery or the damage to the tissue. Moreover, the transmission assembly 140 occupies a smaller space.

[0064] It should be noted that the side wall of the end of the sleeve 120 away from the handle 110 is provided with a avoiding hole for the second ablation clamp to pass through.

[0065] In one embodiment, referring to Figure 5 A connecting rod 151 is formed at one end of the second ablation clamp 150. The outer wall of the connecting rod 151 is provided with external threads. The inner wall of the end of the transmission rod 143 close to the second ablation clamp 150 is provided with internal threads matched with the external threads. The connecting rod 151 is screwed with the transmission rod 143, so as to facilitate the replacement of the second ablation clamp 150.

[0066] In another embodiment, a connecting rod 151 is formed at one end of the second ablation clamp 150. The end of the transmission rod 143 close to the second ablation clamp 150 is provided with a plug-in hole. The connecting rod 151 is connected with the transmission rod 143 in a plug-in manner, so as to facilitate the replacement of the second ablation clamp 150.

[0067] Referring to Figure 2 and Figure 4In one of the embodiments, the pull-ring type pulse ablation clamping device further comprises a limiting ring 175. The limiting ring 175 is fixedly installed in the operating handle 110, and a through hole is formed in the middle of the limiting ring 175 for the transmission rod 143 to pass through. A limiting block 1431 is formed on the side wall of the transmission rod 143 and matches the limiting ring 175. When the transmission rod 143 moves away from the first ablation clamp 130, the limiting block 1431 gradually presses against the limiting ring 175 to limit the continuous movement of the transmission rod 143. It should be noted that one end of the reset spring 144 is fixedly connected with the limiting ring 175.

[0068] With reference to Figure 1 and Figure 2 In one of the embodiments, a thumb wearing ring 114 is formed on the end of the operating handle 110 away from the sleeve 120. A forefinger wearing ring 162 is formed on one side of the outer wall of the driving ring 160, and a middle finger wearing ring 163 is formed on the other side of the outer wall of the driving ring 160. The thumb wearing ring 114 is for the thumb of the operator to wear. The forefinger wearing ring 162 is for the forefinger of the operator to wear. The middle finger wearing ring 163 is for the middle finger of the operator to wear, so as to facilitate the single-handed operation of the pull-ring type pulse ablation clamping device.

[0069] With reference to Figure 2 and Figure 3 In one of the embodiments, a clamping groove 164 is formed on the inner wall of the end of the driving ring 160 away from the sleeve 120. The pull-ring type pulse ablation clamping device further comprises a clamping block 171, a lifting block 172, a pressing spring 173 and an unlocking button 174. The clamping block 171 is movably installed on the operating handle 110 and can match the clamping groove 164 to limit the movement of the driving ring 160. The lifting block 172 is movably installed in the operating handle 110, and the top end is fixedly connected with the bottom end of the clamping block 171. The pressing spring 173 is installed in the operating handle 110, and the top end is fixedly connected with the lifting block 172. The unlocking button 174 is movably installed on the operating handle 110, and the bottom end is fixedly connected with the top end of the lifting block 172. During the movement of the driving ring 160 away from the sleeve 120, the unlocking button 174 is pressed to move downward, thereby driving the lifting block 172 and the clamping block 171 to move downward, and the pressing spring 173 is gradually compressed. Then, the lifting block 172 is driven to move upward by the restoring force of the compressed pressing spring 173, thereby driving the unlocking button 174 and the clamping block 171 to move upward, so that the clamping block 171 is clamped into the clamping groove 164, thereby limiting the movement of the driving ring 160 towards the sleeve 120, and ensuring that the distance between the first ablation clamp 130 and the second ablation clamp 150 does not become larger. After unlocking, the reset spring 144 is used to reset the driving ring 160.

[0070] Preferably, an installation cavity 112 for installing electronic components is formed in the interior of the operating handle 110, so as to facilitate the installation of electronic components.

[0071] Referring to Figure 6 In one embodiment, the operation handle 110 is formed with an adjusting screw hole 113 at one end away from the sleeve 120. The middle part of the adjusting screw 180 is screwed with the adjusting screw hole 113, one end is pressed against the end of the transmission rack 142 away from the transmission rod 143, and the other end extends out of the operation handle 110. First, the driving ring 160 is driven to move away from the first ablation clamp 130, so that the second ablation clamp 150 gradually approaches the first ablation clamp 130, and the distance between the second ablation clamp 150 and the first ablation clamp 130 is coarsely adjusted. Then, the adjusting screw 180 is further driven to rotate, so that the second ablation clamp 150 continues to approach the first ablation clamp 130, and the distance between the second ablation clamp 150 and the first ablation clamp 130 is finely adjusted. In this way, the distance between the second ablation clamp 150 and the first ablation clamp 130 can be controlled to millimeter level, greatly improving the distance adjustment accuracy.

[0072] Referring to Figure 7 and Figure 8, the pull ring type pulse ablation clamping device further comprises a first bellow 191, a second bellow 192, a first one-way valve 193, a first electromagnetic switch valve 194, a second one-way valve 195, a second electromagnetic switch valve 196, a controller 197, a first control button and a second control button. The first bellow 191 stores working medium inside and is arranged in the accommodating cavity 111 of the handle 110. One end of the first bellow 191 is fixedly connected with one end of the transmission rack 142, and the other end is fixedly connected with one end of the handle 110 away from the sleeve 120. The second bellow 192 stores working medium inside and is arranged in the accommodating cavity 111 of the handle 110. One end of the second bellow 192 is fixedly connected with the other end of the transmission rack 142, and the other end is fixedly connected with one end of the handle 110 close to the sleeve 120. It should be noted that the working medium is gas or liquid. The first one-way valve 193 is installed in the transmission rack 142, the inlet of which is communicated with the first bellow 191, and the outlet of which is communicated with the second bellow 192 through the first electromagnetic switch valve 194. When the first electromagnetic valve is opened, the working medium in the first bellow 191 can flow into the second bellow 192 through the first one-way valve 193 and the first electromagnetic switch valve 194. The second one-way valve 195 is installed in the transmission rack 142, the inlet of which is communicated with the second bellow 192, and the outlet of which is communicated with the first bellow 191 through the second electromagnetic switch valve 196. When the second electromagnetic valve is opened, the working medium in the second bellow 192 can flow into the first bellow 191 through the second one-way valve 195 and the second electromagnetic switch valve 196. The controller 197 is installed in the mounting cavity 112 of the handle 110 and is electrically connected with the first electromagnetic switch valve 194 and the second electromagnetic switch valve 196 respectively, for controlling the opening and closing of the first electromagnetic switch valve 194 and the second electromagnetic switch valve 196. The first control button is installed on the handle 110 and is electrically connected with the controller 197, for controlling the opening and closing of the first electromagnetic switch valve 194. The second control button is installed on the handle 110 and is electrically connected with the controller 197, for controlling the opening and closing of the second electromagnetic switch valve 196. When the driving ring 160 moves away from the first ablation clamp 130, the second electromagnetic switch valve 196 is opened, and the first electromagnetic switch valve 194 is in a closed state, the volume of the second bellow 192 gradually decreases, and the volume of the first bellow 191 gradually increases, a part of the working medium in the second bellow 192 gradually flows into the first bellow 191, so that the force exerted by the second bellow 192 on the transmission rack 142 is the same as the force exerted by the first bellow 191 on the transmission rack 142, further ensuring the stability of the position of the transmission rack 142, thereby ensuring the stability of the distance between the second ablation clamp 150 and the first ablation clamp 130, and enabling the operation to proceed smoothly.When the second ablation clamp 150 is moved into position, the first bellow 191 and the second bellow 192 can both limit the spontaneous movement of the transmission rack 142 and also have a certain buffering effect, avoiding damage to the tissue caused by hand shaking during operation. When the drive ring 160 is moved towards the first ablation clamp 130, the first electromagnetic switch valve 194 is opened and the second electromagnetic switch valve 196 is closed, the volume of the first bellow 191 gradually decreases, the volume of the second bellow 192 gradually increases, and a portion of the working medium in the first bellow 191 gradually flows into the second bellow 192, so that the force exerted by the second bellow 192 on the transmission rack 142 is the same as the force exerted by the first bellow 191 on the transmission rack 142, further ensuring the stability of the position of the transmission rack 142.

[0073] The implementation principle of the embodiment is that when the pulse electric field ablation operation is performed, the operator can operate the handle 110 and the drive ring 160 with one hand, and precisely adjust the distance between the second ablation clamp 150 and the first ablation clamp 130 by using the drive ring 160 and the transmission assembly 140, so as to avoid that the distance between the ablation clamps is too large or too small, and further avoid that the ablation operation fails or the tissue is damaged.

[0074] The embodiments of the specific implementation are preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A pull-ring type pulse ablation clamping device, characterized in that, include: operating handle(110); The sleeve (120) is fixedly installed on the operating handle (110) at one end, and its interior is in communication with the interior of the operating handle (110); A first ablation clamp (130) is fixedly installed at the end of the cannula (120) away from the operating handle (110); a first ablation electrode is provided on the first ablation clamp (130); The transmission assembly (140) is axially movable and installed inside the sleeve (120) and the operating handle (110); A second ablation clamp (150) is installed at one end of the transmission assembly (140) near the first ablation clamp (130) and can move toward or away from the first ablation clamp (130) with the transmission assembly (140); the second ablation clamp (150) matches the first ablation clamp (130); a second ablation electrode matching the first ablation electrode is provided on the second ablation clamp (150); A drive ring (160) is sleeved on the operating handle (110) and connected to the transmission assembly (140). It can move axially to drive the transmission assembly (140) to move toward or away from the first ablation clamp (130). Drive racks (161) are formed on the inner walls of opposite sides of the drive ring (160). The transmission assembly (140) includes: There are two transmission gears (141), which are rotatably mounted on opposite sides of the operating handle (110) and respectively mesh with the drive rack (161) on the corresponding side. A transmission rack (142) is inserted into the operating handle (110) and meshes with the corresponding transmission gear (141) on opposite sides. The transmission rod (143) is inserted into the operating handle (110) and the sleeve (120), with one end fixedly connected to one end of the transmission rack (142) and the other end detachably connected to one end of the second ablation clamp (150). A return spring (144) is sleeved on the outer wall of the transmission rod (143); An adjustment screw hole (113) is formed at the end of the operating handle (110) away from the sleeve (120); The pull-ring type pulse ablation clamping device also includes: The adjusting bolt (180) is screwed to the adjusting screw hole (113) in the middle, with one end pressing against the end of the transmission rack (142) away from the transmission rod (143), and the other end extending to the outside of the operating handle (110).

2. The pull-ring type pulse ablation clamping device according to claim 1, characterized in that, Also includes: A limiting ring (175) is installed inside the operating handle (110), and a clearance hole is formed in the middle for the transmission rod (143) to pass through; A limiting block (1431) is formed on the side wall of the transmission rod (143) to cooperate with the limiting ring (175).

3. The pull-ring type pulse ablation clamping device according to claim 1, characterized in that, A thumb ring (114) is formed at the end of the operating handle (110) away from the sleeve (120); an index finger ring (162) is formed on one side of the outer wall of the drive ring (160), and a middle finger ring (163) is formed on the other side of the outer wall.

4. The pull-ring type pulse ablation clamping device according to claim 1, characterized in that, A groove (164) is formed on the inner wall of the end of the drive ring (160) away from the sleeve (120); Also includes: The card block (171) is movably mounted on the operating handle (110) and can cooperate with the card slot (164) to restrict the movement of the drive ring (160); The lifting block (172) is installed in the operating handle (110) and can be moved up and down. Its top end is fixedly connected to the bottom end of the locking block (171). A tensioning spring (173) is installed inside the operating handle (110), and its top end is fixedly connected to the lifting block (172); The unlock button (174) is mounted on the operating handle (110) and can be moved up and down. Its bottom end is fixedly connected to the top end of the lifting block (172).

5. The pull-ring type pulse ablation clamping device according to claim 1, characterized in that, The operating handle (110) has a mounting cavity (112) for mounting electronic components inside.

6. The pull-ring type pulse ablation clamping device according to claim 1, characterized in that, Also includes: The first bellows (191), which stores the working medium inside, is located inside the operating handle (110). One end is fixedly connected to one end of the transmission rack (142), and the other end is fixedly connected to the end of the operating handle (110) away from the sleeve (120). The second bellows (192) contains a working medium and is located inside the operating handle (110). One end is fixedly connected to the other end of the transmission rack (142), and the other end is fixedly connected to the end of the operating handle (110) near the sleeve (120). The first one-way valve (193) is installed in the transmission rack (142), with its inlet connected to the first bellows (191) and its outlet connected to the second bellows (192) through the first electromagnetic switch valve (194). The second one-way valve (195) is installed in the transmission rack (142), with its inlet connected to the second bellows (192) and its outlet connected to the first bellows (191) through the second electromagnetic switch valve (196). The controller (197) is installed in the operating handle (110) and is connected to the first electromagnetic switch valve (194) and the second electromagnetic switch valve (196) respectively. The first control button is mounted on the operating handle (110) and connected to the controller (197); The second control button is mounted on the operating handle (110) and connected to the controller (197).

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