CN219021515U - Electrode chuck assembly for pulse ablation device - Google Patents

Abstract

The utility model belongs to the technical field of medical appliances, and particularly relates to an electrode chuck assembly for a pulse ablation device, which comprises two electrode plates and a transmission mechanism; the transmission mechanism comprises: a support member; the connecting part is arranged on the supporting piece; a moving member, the proximal end of which slides through the connecting portion; the two push rods, the straight rod structure and the distal ends are respectively connected with the moving part in a rotating way; the bending structure comprises two crutch rods, wherein one crutch rod corresponds to one electrode plate and one push rod, the distal end of the crutch rod is rotationally connected with the corresponding electrode plate, the bending part of the crutch rod is rotationally connected with the supporting piece, and the proximal end of the crutch rod is rotationally connected with the proximal end of the corresponding push rod; the auxiliary rod is in a straight rod structure, one auxiliary rod corresponds to one electrode plate, the far end of the auxiliary rod is rotationally connected with the corresponding electrode plate, and the near end of the auxiliary rod is rotationally connected with the supporting piece. The two electrode plates move mutually in parallel and opposite directions and jointly, so that the ablation part is easier to be kept between the two electrode plates relative to a scissor type clamp.

Description

Electrode chuck assembly for pulse ablation device

Technical Field

The utility model belongs to the technical field of medical appliances, and particularly relates to an electrode chuck assembly for a pulse ablation device.

Background

Atrial fibrillation (atrial fibrillation) is the most common arrhythmia clinically, and is statistically about 1200 ten thousand patients with atrial fibrillation in China, and the overall prevalence is about 0.8%, and is as high as 7% over 80 years old. Atrial fibrillation can create many hazards to the human body. The frequency of atrial beating is very fast and irregular when the atria are in fibrillation, and patients feel palpitation, shortness of breath and hypodynamia, and the quality of life is affected. If hypertension or coronary heart disease and other basic diseases are combined at the same time, heart function damage, heart failure, ischemic nervous system diseases caused by atrial thrombosis drop, and corresponding serious complications and death events can occur.

Thus, surgical treatment of atrial fibrillation is of interest. With the continuous improvement of the operation technology, the application of precision operation instruments such as thoracoscopes, robots and the like, the surgical treatment instruments for atrial fibrillation are different day by day, and a foundation is laid for the expansion of cardiac surgeons in the aspect of atrial fibrillation treatment. Surgical ablative procedures include applications in not only conventional open heart surgery, but also minimally invasive pulse ablative procedures with small intercostal incisions. The medical control and medical intervention catheter ablation operation has the characteristics of low success rate of single operation, long operation time, long treatment period, high cost and the like, and the surgical ablation operation using the bipolar pulse ablation forceps and special surgical instruments can be performed even in a state of cardiac continuous jump. Has the advantages of small operation injury, rapid and accurate operation, less complications and good curative effect. Any existing method for treating atrial fibrillation cannot achieve hundred percent satisfactory effects. With the development of technology, the operations are simpler and easier to repeat. Compared with the catheter intervention technology, the surgical pulse ablation operation is single treatment, is particularly suitable for patients with heart open chest operation diseases which need surgical treatment at the same time, and the single success rate of the operation can reach 70-85%.

At present, a common bipolar pulse ablation forceps is usually a scissor-type clamp, namely two electrode plates do not move in parallel opposite directions or in opposite directions, when pulse ablation is carried out, one end close to each other has a good ablation effect, and one end far away from each other has a poor ablation effect, so that the problems that an ablation line is uneven and an ablation part is not easy to keep between the two electrode plates are caused, and the efficient completion of an operation by an operator is not facilitated.

Disclosure of Invention

The utility model aims at solving the technical problems that the existing bipolar pulse ablation forceps are usually scissor-type clamping, so that an ablation line is uneven and an ablation part is not easy to keep between two electrode plates, and provides an electrode chuck assembly for a pulse ablation device.

An electrode chuck assembly for a pulse ablation device comprises two electrode plates and a transmission mechanism respectively connected with the two electrode plates;

the transmission mechanism comprises:

a support member;

the connecting part is arranged on the supporting piece and is used for being connected with an external connecting rod;

a movable member having a proximal end slidably passing through the connecting portion, the proximal end adapted to be coupled to an external traction member;

the two push rods, the straight rod structure and the distal ends are respectively connected with the moving part in a rotating way;

the bending part of the crutch rod is rotationally connected with the supporting piece, and the proximal end of the crutch rod is rotationally connected with the proximal end of the corresponding push rod;

the device comprises two auxiliary rods and a straight rod structure, wherein one auxiliary rod corresponds to one electrode plate, the far end of the auxiliary rod is in rotary connection with the corresponding electrode plate, and the near end of the auxiliary rod is in rotary connection with the supporting piece;

and the connecting line of the rotating connection parts at the two ends of the auxiliary rod is a connecting line a, the connecting line of the rotating connection parts at the far ends of the turning rods at the same side of the auxiliary rod and the rotating connection parts of the bending parts is a connecting line b, and the connecting line a is parallel to the connecting line b.

Preferably, the two push rods, the two turning rods and the two auxiliary rods are symmetrically arranged in the axial direction of the moving part.

Preferably, the moving part is a T-shaped part, a long section of the T-shaped part slides through the connecting part and extends out of the proximal end of the connecting part, and two sides of a short section of the T-shaped part are respectively connected with the two push rods in a rotating way.

Preferably, the moving member is internally provided with a wire passing channel along an axial direction, and the wire passing channel is communicated with the proximal end and the distal end of the moving member, so that wires positioned outside sequentially pass through the connecting rod and the moving member and are respectively connected with the corresponding electrode plates.

Preferably, a sleeve is arranged outside the wire between the electrode plate and the distal outlet of the wire passing channel, and the sleeve is preferably connected with the auxiliary rod in parallel.

Preferably, the connection point of the proximal end of the moving member for connection with the traction member is located outside the wire passing path.

Preferably, a glue injection hole is formed in the proximal end of the moving part, and the glue injection hole is communicated with the wire passing channel.

Preferably, a limiting block is arranged on the outer wall of the moving part, and the limiting block is located at the far end side of the connecting part.

Preferably, the electrode chuck assembly for a pulse ablation device further comprises:

and the distal end of the reset mechanism is connected or abutted with the proximal end of the moving piece and is positioned at the proximal end side of the connecting part.

Preferably, the reset mechanism includes:

the baffle is fixedly arranged at the proximal end of the moving piece and positioned at the proximal end side of the connecting part;

and the distal end of the reset spring is arranged on the proximal end side of the baffle plate.

The utility model has the positive progress effects that: the electrode chuck assembly for the pulse ablation device has the following advantages:

1. the two electrode plates of the electrode chuck assembly move mutually in parallel and opposite directions together, and compared with scissor type clamping, the ablation part is easier to keep between the two electrode plates. In the transmission mechanism of the electrode chuck assembly, an auxiliary rod is arranged between the electrode plate and the supporting piece, and two ends of the auxiliary rod are rotationally connected with the electrode plate and the supporting piece, so that the electrode plate can be kept parallel in the opening and closing process.

2. The moving member is provided with a wire passing path so that the external lead wire can be connected to the electrode plate through the wire passing path. The connection between the moving part and the traction part is designed to be as far away from the wire passing channel as possible outside the wire passing channel, so that the traction part passes through the reserved channel as far as possible.

3. The near end side of the moving part is provided with one or more glue injection holes, and after the lead is installed, the glue is injected through the glue injection holes, so that the lead can not slide relative to the wire passing channel, and the lead is prevented from moving to the far end when the moving part moves.

4. The limiting block is arranged on the outer wall of the moving part, so that the moving part is prevented from transitionally moving to the near end, and the push rod transitionally moves, and the electrode plate is changed into opening movement from clamping.

5. When the moving part is pulled back by the traction part, the two electrode plates are clamped, the reset mechanism is compressed at the moment, and when the force of the traction part is removed, the reset mechanism resets to push the moving part to reset, so that the two electrode plates are opened.

Drawings

FIG. 1 (a) is a schematic diagram of an application structure of the present utility model;

FIG. 1 (b) is an angular schematic view of FIG. 1 (a);

FIG. 1 (c) is another angular schematic view of FIG. 1 (a);

FIG. 2 (a) is a schematic diagram of the internal structure of FIG. 1 (c);

FIG. 2 (b) is an enlarged view of a portion of FIG. 2 (a) at A;

FIG. 2 (c) is a partial enlarged view at B in FIG. 2 (a);

FIG. 3 is a schematic view of the structure of FIG. 2 (a) except for the extension rod;

FIG. 4 (a) is a schematic diagram of the structure of FIG. 3 except for the reset mechanism;

FIG. 4 (b) is an enlarged view of a portion of FIG. 4 (a) at C;

FIG. 5 (a) is a partial cross-sectional view of FIG. 1 (a);

fig. 5 (b) is a partial enlarged view of D in fig. 5 (a);

FIG. 5 (c) is an enlarged view of a portion at E in FIG. 5 (b);

fig. 6 is an exploded view of the electrode holder assembly of the present utility model.

Detailed Description

In order that the manner in which the utility model is practiced, as well as the features and objects and functions thereof, will be readily understood and appreciated, the utility model will be further described in connection with the accompanying drawings.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

In the present utility model, "distal", "proximal", "distal" and "proximal" are used as terms of orientation, which are terms commonly used in the field of interventional medical devices, where "distal" refers to an end or section of a pulse ablation device that is away from an operator during a procedure, and "proximal" refers to an end or section of a pulse ablation device that is near an operator during a procedure. "axial" refers to a direction parallel to the line connecting the distal center and the proximal center of the pulse ablation device; "radial" refers to a direction perpendicular to the "axial" direction described above.

The present utility model provides an electrode holder assembly for a pulse ablation device for use in a pulse ablation device as part of the pulse ablation device. Referring to fig. 1 (a) to 1 (c), the pulse ablation device includes a housing 100, an electrode holder assembly 200 of the present utility model, and a connecting rod using an extension rod 300, as shown in fig. 1 (a), the extension rod 300 includes at least two rigid sections at both ends and a flexible section 310 at the middle, a rigid section 320 at the proximal end is connected to the housing 100, a rigid section 330 at the distal end is connected to the electrode holder assembly 200, and the flexible section 310 is bendable.

The extension rod 300 of the present utility model adopts a bendable design, wherein the rigid sections at both ends can be better connected with the electrode holder assembly 200 and the housing 100, respectively, and the flexible section 310 in the middle is used for bending the extension rod, so that the position of the electrode holder assembly 200 can be adjusted according to the opening of the operation hole.

In some embodiments, the flexible segment 310 and the rigid segments at the two ends may be connected by a material-to-material existing connection, such as bonding, plugging, welding, screwing, or a connector connection.

In some embodiments, flexible segment 310 employs a metal sizing hose that can be arbitrarily bent and oriented to achieve more convenient adjustment of bending and sizing.

In some embodiments, the extension rod 300 is externally coated with an outer tube 340. The outer tube 340 covers the whole extension rod to form a smooth outer surface of the extension rod, so that the human body is further prevented from being injured when the extension rod is extended into the human body, and the human body is prevented from contacting more metal materials. Specifically, the outer tube 340 may be a polyethylene outer tube.

In some embodiments, referring to fig. 2 (a) and 2 (b), a limited rotation slot 321 is provided on the proximal rigid section 320, a limited rotation hole 110 is provided on the housing 100, the limited rotation hole 110 is located inside the housing 100 and does not extend through the housing 100, and the connection of the extension rod 300 to the housing 100 is achieved by inserting the limited rotation slot 321 into the limited rotation hole 110 via a shaft. In the connection design of the extension rod 300 and the housing 100, the rotation limiting hole 110 is not penetrated through the housing 100, and after the rod is inserted into the rotation limiting hole 110 and the rotation limiting groove 321, the rod is always positioned in the housing 100, so that the falling risk is avoided.

In some embodiments, referring to fig. 2 (a) and 2 (c), the electrode holder assembly 200 for a pulse ablation device of the present utility model includes two electrode plates 210 and a transmission mechanism 220, wherein the two electrode plates 210 are disposed parallel to each other and can move toward each other, and the ablation site is more easily maintained between the two electrode plates 210 with respect to a scissor type nip. The transmission mechanism 220 is respectively connected with the two electrode plates 210, and the transmission mechanism 220 drives the two electrode plates 210 to move in opposite directions.

Referring to fig. 2 (a), the pulse ablation device of the present utility model further includes a driving mechanism 400 and a traction member 500, the driving mechanism 400 being disposed in the housing 100, and a driving end of the driving mechanism 400 protruding from the housing 100, so that an operator drives the driving mechanism 400 through the driving end.

The traction member 500 is made of a flexible material, and the traction member 500 is preferably a pull wire. The distal end of the traction component 500 is connected with the transmission mechanism 220, the proximal end of the traction component 500 extends into the shell 100 through the inside of the extension rod 300 and is connected with the driving mechanism 400, and the driving mechanism 400 drives the transmission mechanism 220 to transmit through the traction component 500, so that the two electrode plates 210 are driven to move in opposite directions.

In some embodiments, referring to fig. 4 (a), 4 (b) and 6, the transmission mechanism 220 includes a support 221, a connection 222, a mover 223, two push rods 224, two crank rods 225 and two auxiliary rods 226.

The support 221 may be any shaped support structure. To reduce the weight of the electrode holder assembly 200, the support 221 is preferably a hollow frame-type structure.

The connection 222 is provided on the support 221, the connection 222 being connected to the distal rigid section 330. When the connection portion 222 is connected to the distal end rigid section 330, as shown in fig. 5 (b) and 5 (c), an external thread is provided on the outer wall of the connection portion 222, and an internal thread is provided in the distal end rigid section 330, and the two are connected by the thread.

The proximal end of the moving member 223 slides through the connection portion 222 and protrudes into the inside of the extension rod 300, and the proximal end of the moving member 223 is connected to the traction member 500 to pull the moving member 223 to slide proximally along the inside of the connection portion 222 when the traction member 500 is pulled proximally.

The two push rods 224 are both in a straight rod structure, and the distal ends of the two push rods 224 are respectively and rotatably connected with the moving member 223.

The two turning rods 225 are of a bent structure, one turning rod 225 corresponds to one electrode plate 210 and one push rod 224, the distal end of the turning rod 225 is rotationally connected with the corresponding electrode plate 210, the bent part of the turning rod 225 is rotationally connected with the supporting piece 221, and the proximal end of the turning rod 225 is rotationally connected with the proximal end of the corresponding push rod 224. As shown in fig. 6, the curved shape of the two bent levers 225 is preferably a V-shaped structure with an obtuse opening angle.

The two auxiliary rods 226 are of straight rod structures, one auxiliary rod 226 corresponds to one electrode plate 210, the distal end of the auxiliary rod 226 is rotationally connected with the corresponding electrode plate 210, the proximal end of the auxiliary rod 226 is rotationally connected with the supporting piece 221, and a connecting line at the rotationally connected position of the two ends of the auxiliary rod 226 is parallel to a connecting line at the rotationally connected position of the turning rod 225 and the electrode plate 210 and the rotationally connected position of the turning rod 225 and the supporting piece 221. That is, as shown in fig. 4 (b), the connection line between the rotational connection points of the two ends of the auxiliary rod 226 is defined as a connection line a, and the connection line between the rotational connection point of the turning rod 225 and the electrode plate 210 on the same side as the auxiliary rod 226 and the rotational connection point of the turning rod 225 and the supporting member 221 is defined as a connection line b, so that the connection line a is parallel to the connection line b.

Through the above design, when the traction component 500 pulls the moving piece 223 to slide along the connecting part 222 to the near end, the two electrode plates 210 are clamped by the transmission of the push rod 224 and the turning rod 225. Wherein, the auxiliary rod 226 is designed so that the two electrode plates 210 can be kept parallel during the opening and closing process.

In some embodiments, referring to fig. 2 (c) and 4 (b), the two push rods 224, the two crank rods 225, and the two auxiliary rods 226 are each disposed in axial symmetry of the mover 223.

In some embodiments, referring to fig. 2 (c), 4 (b) and 6, the moving member 223 is a T-shaped member, and a long section of the T-shaped member slides through the connecting portion 222 and extends into the extension rod 300 to be connected to the traction member 500, and two sides of a short section of the T-shaped member are respectively rotatably connected to the two push rods 224.

In some embodiments, referring to fig. 5 (b) and 5 (c), the inside of the mover 223 is axially provided with a wire passing path 2231, and the wire passing path 2231 communicates with the proximal and distal ends of the mover 223, so that the wires at the housing 100 are connected to the corresponding electrode plates 210 after passing through the inside of the extension rod 300 and the inside of the mover 223, respectively.

In some embodiments, a sleeve is disposed outside the lead between electrode plate 210 and the distal outlet of the wire trace 2231, preferably in parallel with auxiliary rod 226. For example, glued to each other, such a design does not affect the movement of the auxiliary rod 226 and its electrode plate 210 because the wires are flexible.

In some embodiments, referring to fig. 4 (b), 5 (b) and 5 (c), the point of attachment of the proximal end of mover 223 to traction member 500 is located outside of lane 2231. Such a design may enable traction element 500 to be positioned as far from wire path 2231 as possible so that traction element 500 is positioned as close as possible to the outside of the interior of extension rod 300, i.e., so that traction element 500 is positioned as close as possible to the inside wall of extension rod 300, away from the central axis of extension rod 300, so that a passageway is reserved for the wires to pass through the interior of extension rod 300.

In some embodiments, referring to fig. 4 (b), 5 (b) and 5 (c), the proximal end of the moving member 223 is provided with a glue injection hole 2232, the glue injection hole 2232 being in communication with the wire channel 2231. Depending on the implementation, one, a plurality, or a symmetrical plurality of glue injection holes 2232 may be provided, for example, as shown in fig. 4 (b), two glue injection holes 2232 are symmetrically provided at the proximal end of the movable member 223. After the lead is installed, an adhesive is injected through the injection hole 2232 so that the lead cannot slide with respect to the wire path 2231, preventing the distal movement of the lead within the extension rod during movement of the mover 223.

In some embodiments, referring to fig. 5 (b) and 6, a stopper 2233 is provided on an outer wall of the moving member 223, and the stopper 2233 is located at a distal end side of the connection part 222. The stopper 2233 prevents the transition of the mover 223 to the proximal end, resulting in the transition of the push rod 224, so that the electrode plate 210 is changed from the clamping to the opening movement.

In some embodiments, referring to fig. 3, the electrode holder assembly for a pulse ablation device of the present utility model further comprises a reset mechanism 600, wherein the reset mechanism 600 is disposed within the extension rod 300, the distal end of the reset mechanism 600 is connected or abutted with the proximal end of the mover 223 and is located on the proximal side of the connection portion 222, and the proximal end of the reset mechanism 600 is connected or abutted with the distal rigid section 330. Because the extension rod 300 is designed to be bendable, and thus cannot be driven by a conventional guide rod, the utility model adopts the traction component 500 made of bendable flexible materials for driving, the traction component 500 can realize free bending, and the traction component 500 can bear larger tensile force but cannot bear larger thrust force, therefore, the utility model also designs the reset mechanism 600, which combines the reset mechanism 600 with the electrode chuck assembly 200, when the movable piece 223 is pulled back by the traction component 500, the two electrode plates 210 are clamped, at this time, the reset mechanism 600 is compressed, and when the force of the traction component 500 is removed, the reset mechanism 600 is reset, the movable piece 223 is pushed to reset, so that the two electrode plates 210 are opened.

In some embodiments, referring to fig. 5 (a) to 5 (c), the reset mechanism 600 includes a shutter 610 and a reset spring 620, the shutter 610 is fixedly mounted to the proximal end of the mover 223 and located on the proximal side of the connection portion 222, the distal end of the reset spring 620 is disposed on the proximal side of the shutter 610, and the proximal end of the reset spring 620 abuts against the stepped block 331 inside the distal rigid section 330.

In some embodiments, referring to fig. 2 (a), 3 and 4 (a), the housing 100 is hollow inside, and the housing 100 includes, from a proximal end to a distal end, a grip base 120 and a housing body 130 that are connected to each other.

The driving end of the driving mechanism 400 is a handle 410, the handle 410 extends into the housing main body 130 and is rotatably connected with the interior of the housing main body 130, one end of the handle 410 extends out of the housing main body 130 and corresponds to the position of the grip base 120, and the handle 410 extending out of the housing main body 130 can be of a relatively slender structure so as to be convenient for gripping the handle 410.

The driving mechanism 400 further includes a link 420 and a wire rod 430, one end of the link 420 being rotatably connected to the other end of the handle 410 located in the housing main body 130. The middle part of the wire rod 430 is rotatably connected with the inside of the housing main body 130, one end of the wire rod 430 is connected with the other end of the connecting rod 420, and the other end of the wire rod 430 is fixedly connected with the proximal end of the traction member 500.

According to the utility model, the positions of the handle seat 120 and the handle 410 correspond to each other, and when the handle 410 is held by holding the handle seat 120, the connecting rod 420 is pushed to drive the wire rod 430 to rotate, so that the traction part 500 is pulled to move proximally, and the opposite movement of the two electrode plates 210 is realized. The utility model has a structure similar to a pistol, and is more suitable for an operator to grasp.

In some embodiments, the other end of the handle 410 within the housing body 130 is provided with a stabilizing wheel 440, the stabilizing wheel 440 being rotatably connected to one end of the linkage 420. That is, the handle 410 is not directly connected with the connecting rod 420, but is rotatably connected through the stabilizing wheel 440, and the stabilizing wheel 440 can increase the weight of the handle 410 and the pulse ablation device thereof, and can also increase the stability during operation.

In some embodiments, in order to prevent the outside from contaminating the inside of the housing 100 through a passage required for the rotation of the handle 410, a light shielding member 450 is provided on the handle 410, the light shielding member 450 being located inside the housing main body 130, the light shielding member 450 blocking the passage required for the rotation of the handle 410.

In some embodiments, the transitional opening of the handle 410 is prevented from causing the traction member 500 to generate thrust, and the interior of the housing 100 is provided with a brake post 140, the brake post 140 blocking the transition of the stabilizing wheel 440 to proximal rotation.

In some embodiments, referring to fig. 2 (a), 3 and 4 (a), the housing 100 is further provided with at least one tail hole 150, at least one tail hole 150 being located at the distal end of the housing 100, the tail holes 150 extending through the housing 100.

At least one wire-binding block 160 is further arranged in the shell 100, the wire-binding block 160 is at least positioned in the shell 100 near the far end side, a wire-binding channel is axially arranged on the wire-binding block 160, and a wire is fixed through the wire-binding channel of the wire-binding block 160 after entering the shell 100 from the tail hole 150 at the far end, so that the wire is prevented from interfering with the wire rod 430 and the connecting rod 420. The number of the wire-binding blocks 160 may be plural according to the axial length of the housing 100, and the plurality of wire-binding blocks 160 may be disposed at different positions according to actual requirements, so as to prevent interference between the wires and the driving mechanism.

In some embodiments, referring to fig. 2 (a), 3 and 4 (a), an inlet 170 penetrating the inside and outside of the housing 100 is also provided at the proximal end of the housing 100, and a wire inside the housing 100 may extend out of the proximal end of the housing 100 through the inlet 170 and then be connected to an external power supply to provide pulse signals to the two electrode plates 210.

In some embodiments, referring to fig. 1 (a) to 2 (a), 3 and 4 (a), the housing 100 may be formed in two halves, each half having a half tail hole 150, a half rotation limiting hole 110 and a half inlet hole 170, and the two halves of the housing 100 may be detachably connected together to form the hollow housing 100.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. An electrode chuck assembly for a pulse ablation device comprises two electrode plates and a transmission mechanism respectively connected with the two electrode plates;

the transmission mechanism is characterized by comprising:

a support member;

a connecting part arranged on the supporting piece;

a moving member having a proximal end slidably passing through the connecting portion;

the two push rods, the straight rod structure and the distal ends are respectively connected with the moving part in a rotating way;

the bending part of the crutch rod is rotationally connected with the supporting piece, and the proximal end of the crutch rod is rotationally connected with the proximal end of the corresponding push rod;

the device comprises two auxiliary rods and a straight rod structure, wherein one auxiliary rod corresponds to one electrode plate, the far end of the auxiliary rod is in rotary connection with the corresponding electrode plate, and the near end of the auxiliary rod is in rotary connection with the supporting piece;

and the connecting line of the rotating connection parts at the two ends of the auxiliary rod is a connecting line a, the connecting line of the rotating connection parts at the far ends of the turning rods at the same side of the auxiliary rod and the rotating connection parts of the bending parts is a connecting line b, and the connecting line a is parallel to the connecting line b.

2. The electrode holder assembly for a pulse ablation device according to claim 1, wherein the two push rods, the two turn rods, and the two auxiliary rods are each disposed symmetrically with respect to the axial direction of the moving member.

3. The electrode holder assembly for a pulse ablation device according to claim 1, wherein the moving member is a T-shaped member, a long section of the T-shaped member slides through the connecting portion and extends out of a proximal end of the connecting portion, and both sides of a short section of the T-shaped member are rotatably connected to the two push rods, respectively.

4. The electrode holder assembly for a pulse ablation device according to claim 1, wherein a wire passage is axially provided inside the moving member, the wire passage communicating a proximal end and a distal end of the moving member.

5. The electrode holder assembly for a pulse ablation device according to claim 4, wherein a sleeve is disposed outside the lead between the electrode plate and the distal outlet of the wire passage, the sleeve being connected in parallel with the auxiliary rod.

6. The electrode holder assembly for a pulse ablation device according to claim 4 wherein the point of attachment of the proximal end of the mover for attachment to the traction member is located outside of the wire path.

7. The electrode holder assembly for a pulse ablation device according to claim 4, wherein the proximal end of the moving member is provided with a glue injection hole, the glue injection hole being in communication with the wire passage.

8. The electrode holder assembly for a pulse ablation device according to claim 1, wherein a stopper is provided on an outer wall of the moving member, the stopper being located on a distal end side of the connecting portion.

9. The electrode holder assembly for a pulse ablation device according to any one of claims 1 to 8, further comprising:

and the distal end of the reset mechanism is connected or abutted with the proximal end of the moving piece and is positioned at the proximal end side of the connecting part.

10. The electrode holder assembly for a pulse ablation device of claim 9, wherein the reset mechanism comprises:

the baffle is fixedly arranged at the proximal end of the moving piece and positioned at the proximal end side of the connecting part;

and the distal end of the reset spring is arranged on the proximal end side of the baffle plate.

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