CN114795457B - Bipolar electrocoagulator - Google Patents

Abstract

The invention provides a bipolar electric condenser, which comprises two clamping arms and two electrode heads; the clamping arms comprise opposite connecting ends and free ends, the connecting ends of the two clamping arms are connected, and the free ends of the two clamping arms can be relatively close to or far away from each other; the two electrode heads are arranged at the two free ends in a one-to-one correspondence manner and are detachably matched with the free ends. The electrode tip and the forceps body or the clamping arms of the forceps body are designed to be of a split type structure, the electrode tip can be used for one time, and can be detached from the clamping arms after being used, so that the forceps body or the forceps body with the clamping arms can be reused, the problem of adhesion with foreign matters is avoided, and the use cost is reduced.

Description

A bipolar electrocoagulator

Technical Field

The present invention relates to the technical field of medical devices, and in particular to a bipolar electrocoagulator.

Background Art

The forceps-type bipolar electrocoagulator provides high-frequency electrical energy to the diseased tissue through the two tips of the bipolar forceps, causing the blood vessels between the two ends of the bipolar forceps to dehydrate and coagulate, thereby achieving the purpose of hemostasis treatment. It is a medical device that can be used for intraoperative hemostasis in transnasal endoscopic surgery, orthopedic surgery, etc.

Existing forceps-type bipolar electrocoagulators can be divided into two categories. One category is reusable, and its electrode head is an integrated structure with the forceps body or clamp body. After repeated use, the electrode head part is prone to adhesion of foreign matter, which is difficult to clean, and the electrode head part is easily damaged, affecting subsequent use; the other type of double-acting electrocoagulator is disposable. In order to facilitate processing, its electrode head and the forceps body or clamp body are also an integrated structure and are discarded after one use. Although this can prevent the electrode head part from being easily adhered to foreign matter, the cost is too high.

Summary of the invention

The purpose of the present invention is to provide a method to solve the problems of the existing bipolar electrocoagulator, such as difficulty in cleaning, easy damage to the electrode head part and high cost.

In order to solve the above problems, the present invention first provides a bipolar electrocoagulator, including two clamp arms and two electrode heads; the clamp arms include opposite connecting ends and free ends, the connecting ends of the two clamp arms are connected, and the free ends of the two clamp arms can be relatively close to or far away from each other; the two electrode heads are installed on the two free ends one by one, and are detachably matched with the free ends.

By adopting the above technical solution, the electrode head and the tweezers body or the clamping arm of the pliers body are designed as a split structure. The electrode head can be used once and removed from the clamping arm after use, so that the tweezers body or the pliers body with the clamping arm can be reused, which not only avoids the problem of foreign matter sticking to the body, but also reduces the cost of use.

Furthermore, a first plug-in portion is provided at the tail end of the electrode head, a first slot is provided at the free end, and the first plug-in portion is plug-fitted with the first slot.

By adopting the above technical solution, the connection between the electrode head and the clamping arm is designed to be plug-in fit, which improves the assembly efficiency and the removal efficiency of the discarded electrode head, and is more convenient for users to use.

Furthermore, the clamp arm includes an arm body and a connecting piece, the connecting piece is detachably mounted on the arm body, an end of the arm body away from the connecting piece is the connecting end, and an end of the connecting piece away from the arm body is the free end.

By adopting the above technical solution, the clamp arm is also designed as a split structure. When the connector directly connected to the electrode head is contaminated or damaged, it can be discarded together with the electrode head, thereby ensuring that the tweezers body or the clamp body can continue to be used, saving costs.

Furthermore, a second slot is formed at one end of the arm body away from the connecting end, and the connecting member is provided with a second plug-in portion pluggable with the second slot.

By adopting the above technical solution, the connector and the arm body are designed to be plug-in compatible, which improves the assembly efficiency and the removal efficiency of the connector, making it more convenient for users to use.

Furthermore, a limiting buckle is provided at one end of the second plug-in portion away from the free end; the arm body includes a first side wall facing the other arm body and two second side walls adjacent to the first side wall and at an angle to each other, the first side wall is provided with a limiting buckle hole that penetrates the second slot, and the limiting buckle is engaged with the limiting buckle hole.

By adopting the above technical solution, the connection stability between the arm body and the connecting piece is improved by utilizing the cooperation of the limiting buckle and the limiting hole.

Furthermore, the clamp arm is provided with a wire passing groove for accommodating the passage of a power supply line; when the clamp arm includes an arm body and a connecting piece, and the arm body includes a first side wall and two second side walls, the connecting piece includes a third side wall facing the other connecting piece and a fourth side wall adjacent to the third side wall and at an angle to each other; wherein, at least one of the two second side walls is provided with a first wire passing branch groove, and at least one of the two fourth side walls is provided with a second wire passing branch groove, and the adjacent first wire passing branch grooves and second wire passing branch grooves are connected to form the wire passing groove.

By adopting the above technical solution, a wire trough structure is designed on the clamp arm, which is beneficial to the routing of the power supply line, can ensure the stability of the power supply line during the operation, and avoid affecting the operation.

Furthermore, the clamping device includes a fixed arm, and the connecting ends of the two clamping arms are fixedly connected to the fixed arm; the fixed arm is provided with a fifth side wall connected to the second side wall, and the end of the fifth side wall facing away from the clamping arm is provided with a limiting mechanism, and the power supply line is installed in the limiting mechanism, and the limiting mechanism is used to limit the power supply line from detaching from the fifth side wall.

By adopting the above technical solution, the power supply line can be fixed in a certain position by using the limiting mechanism to prevent the power supply line from being separated from the fixing arm and the wire trough.

Furthermore, the limiting mechanism includes two limiting protrusions respectively located on opposite sides of the fifth side wall, and the power supply line is installed between the two limiting protrusions.

By adopting the above technical solution, the limiting protrusions are used to limit the two sides of the power supply line, which has a simple structure and is easy to implement.

Furthermore, the limiting mechanism also includes a first limiting member and a second limiting member located between the clamp arm and the limiting protrusion; the first limiting member includes a partition portion and a handle portion, the end of the partition portion close to the limiting protrusion is mounted on the fifth side wall through a pivot, and is located between the two branch lines of the power supply line, and the handle portion is vertically connected to the end of the partition portion away from the limiting protrusion; the second limiting member includes a vertically connected limiting portion and a stop portion, the opposite ends of the limiting portion are connected to the two limiting protrusions one by one, and together with the limiting protrusion form a limiting space for the power supply line, the stop portion includes a vertical sixth side wall and a seventh side wall, the sixth side wall abuts against the partition portion, and the seventh side wall abuts against the handle portion.

By adopting the above technical solution, the second limiting member and the limiting protrusion are used to form an enclosing limiting space, which can better limit the power supply line. Before the second limiting member is installed on the partition, the rotation of the partition can also be used to drive the position of the power supply lines on both sides of the partition to ensure reasonable routing.

Furthermore, the clamp arm is made of a conductive material, and a preset interval is formed between the connecting ends of the two clamp arms. At least one insulating connector is provided in the preset interval, and both sides of the insulating connector are respectively connected and fixed to the connecting ends of the two clamp arms, and the connecting ends of each clamp arm are connected to the power supply line.

By adopting the above technical solution, the end of the clamp arm is connected to the end of the conductive circuit, and there is no need to design wiring on the clamp arm, thereby simplifying the structure.

Furthermore, a plurality of anti-slip grooves are arranged at intervals on the side wall of the clamp arm on the side away from the other clamp arm.

By adopting the above technical solution, the friction between the clamp arm and the human hand is improved, making it easier for medical staff to operate the clamp arm.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

FIG1 is a schematic structural diagram of a forceps-type bipolar electrocoagulator provided in Embodiment 1 of the present invention;

FIG2 is an enlarged view of portion A of FIG1 ;

FIG3 is a schematic diagram of the structure of the tweezer-type bipolar electrocoagulation device provided in the first embodiment of the present invention after the electrode head is removed;

FIG4 is a schematic structural diagram of a connecting member provided in Embodiment 1 of the present invention;

FIG5 is a schematic diagram of the structure of an electrode head provided in Embodiment 1 of the present invention;

FIG6 is a schematic diagram of the connection between the electrode head and the power supply circuit provided in the first embodiment of the present invention;

FIG7 is a schematic structural diagram of a forceps-type bipolar electrocoagulator provided in Embodiment 2 of the present invention;

FIG8 is a cross-sectional view taken along line A-A in FIG7 .

Description of reference numerals:

100-clamping arm; 110-first slot; 120-arm body; 121-first side wall; 1211-limiting card hole; 122-second side wall; 130-connecting piece; 131-second plug-in part; 1311-limiting buckle; 132-third side wall; 133-fourth side wall; 140-second slot; 150-wire groove; 151-first wire branch groove; 152-second wire branch groove; 160-anti-slip groove;

200-electrode head;

300-fixed arm; 310-fifth side wall;

400-limiting mechanism; 410-limiting protrusion; 420-first limiting member; 421-partitioning portion; 422-handle portion; 430-second limiting member; 431-limiting portion; 432-stopping portion;

500-power supply line; 510-branch line;

600-insulating connector;

700-Insulation sheath.

DETAILED DESCRIPTION

In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

Embodiment 1

In order to solve the problems of difficult cleaning and easy damage of the electrode head of the existing ordinary tweezers-type bipolar electrocoagulation device, as well as the high cost caused by the disposable tweezers-type bipolar electrocoagulation device being discarded after use, the present embodiment provides a tweezers-type bipolar electrocoagulation device, aiming to solve the above technical problems by improving its structure.

As shown in Figure 1, this embodiment provides a forceps-type bipolar electrocoagulator, which can be a forceps type or a clamp type. The description and drawings of this embodiment take the forceps type structure as an example, but its improvements are also applicable to the clamp type. It should be noted that the electrical part and working principle of the forceps-type bipolar electrocoagulator can refer to the existing structure, which is not described in this embodiment, and only the structural improvement part of the forceps-type bipolar electrocoagulator is described in detail.

Specifically, the forceps-type bipolar electrocoagulator of this embodiment includes two clamp arms 100 and two electrode heads 200, wherein when the forceps-type bipolar electrocoagulator is of a forceps-type structure, one end of the two clamp arms 100 are directly fixedly connected, and the pressure applied by the operator is used to cause the two clamp arms 100 to deform and approach each other, and when the forceps-type bipolar electrocoagulator is of a clamp-type structure, one end of the two clamp arms 100 is hinged and extends outward, and the clamping of the two clamp arms 100 is achieved by the principle of leverage.

Among them, the clamp arm 100 of this embodiment includes relative connecting ends and free ends. The connecting ends of the two clamp arms 100 are connected, and the free ends of the two clamp arms 100 can be relatively close to or far away under the external force of the operator. The difference from the existing structure is that the two electrode heads 200 of this embodiment are installed one by one at the two free ends and are detachably matched with the free ends.

Different from the traditional forceps-type bipolar electrocoagulation device in which the electrode head 200 is fixed on the clamp arm 100, the electrode head 200 and the forceps body or the clamp arm 100 of the forceps body are designed as a split structure in this embodiment. The electrode head 200 can be used as a disposable device and removed from the clamp arm 100 after use to form the structure in Figure 3, thereby retaining the main structure such as the clamp arm 100, so that the forceps body or the forceps body with the clamp arm 100 can be reused. From the technical effect point of view, it not only avoids the problem of adhesion of foreign matter, but also the use cost is much lower than the existing disposable forceps-type bipolar electrocoagulation device.

There are many ways to detachably connect the electrode head 200 and the clamp arm 100 of this embodiment, such as snap-on, plug-in, threaded connection, etc. As a preferred implementation mode of this embodiment, this implementation designs the electrode head 200 and the clamp arm 100 to be plug-in compatible for easy processing and disassembly and assembly. As shown in Figure 5, the tail end of the electrode head 200 of this embodiment is provided with a first plug-in portion 210, and correspondingly, the free end of this embodiment is provided with a first slot 110, and the first plug-in portion 210 is plug-in compatible with the first slot 110.

This embodiment utilizes the first plug-in portion 210 and the first slot 110 to achieve plug-in cooperation between the electrode head 200 and the clamp arm 100, thereby improving assembly efficiency during assembly. After the electrode head 200 is used, the electrode head 200 can be easily pulled out, which facilitates the removal and disposal of the electrode head 200 and is beneficial to users.

As shown in Figures 3 and 4, in addition to designing the connecting piece 130 and the clamp arm 100 as a split structure, the present embodiment further improves the structure of the clamp arm 100, and designs the clamp arm 100 as a split structure. Specifically, the clamp arm 100 of the present embodiment includes an arm body 120 and a connecting piece 130, and the materials of the two can be the same or different. The connecting piece 130 of the present embodiment is detachably installed on the arm body 120, and the end of the arm body 120 of the present embodiment away from the connecting piece 130 is the above-mentioned connecting end, and the end of the connecting piece 130 of the present embodiment away from the arm body 120 is the above-mentioned free end, that is, the connecting piece 130 is provided with the above-mentioned first slot 110.

With this structural design, when the connector 130 directly connected to the electrode head 200 is also contaminated or damaged, it can be discarded together with the electrode head 200, further demonstrating that the forceps-type bipolar coagulation device of this embodiment combines the advantages of ordinary forceps-type bipolar coagulation devices and disposable forceps-type bipolar coagulation devices, and parts of the forceps-type bipolar coagulation device can be selectively discarded, thereby ensuring that the forceps body or the main body of the forceps body can continue to be used, thereby saving treatment costs.

Similarly, the detachable connection between the arm body 120 and the connector 130 of the present embodiment can also be a plug-in connection, that is, a second slot 140 is provided at one end of the arm body 120 of the present embodiment away from the connection end, and correspondingly, a second plug-in portion 131 is provided on the connector 130 of the present embodiment to be plugged in and matched with the second slot 140. During assembly, the second plug-in portion 131 can be docked with the second slot 140. When the connector 130 needs to be removed, the connection between the two can be released, thereby improving the assembly efficiency and the removal efficiency of the connector 130, and making it more convenient for users to use.

In combination with Figures 1 and 2, in order to improve the connection stability between the arm 120 and the connector 130 of the present embodiment, the present embodiment makes further improvements to the structure of the connector 130 and the arm 120. Specifically, a limiting buckle 1311 is provided at one end of the second plug-in portion 131 of the present embodiment away from the free end, and the limiting buckle hole 1211 can be a structure with a cross section similar to a right triangle in the figure, or can be a protrusion in other shapes. The arm 120 of the present embodiment includes a first side wall 121 facing the other arm 120 and two second side walls 122 adjacent to the first side wall 121 and at an angle to each other (specifically, they can be vertical angles in the figure), corresponding to the above-mentioned limiting buckle 1311, a limiting buckle hole 1211 that is connected to the second slot 140 is provided on the first side wall 121 of the present embodiment, and the limiting buckle hole 1211 and the limiting buckle 1311 are engaged.

During assembly, the second plug-in portion 131 with the limiting buckle 1311 is inserted into the second slot 140. At this time, the limiting buckle 1311 of this embodiment produces a certain deformation in the second slot 140. When the limiting buckle 1311 extends into the limiting card hole 1211, the limiting buckle 1311 returns to its original state to achieve a snap-fit with the limiting card hole 1211; when the connecting member 130 needs to be removed, the connecting frame of this embodiment can be pulled out with force. At this time, the limiting buckle 1311 produces a certain deformation to disengage from the limiting card hole 1211, thereby disconnecting the connecting member 130 from the arm body 120.

In combination with Figures 1, 3 and 4, the present embodiment further makes other structural improvements to the clamp arm 100. In the present embodiment, a wire groove 150 for accommodating the power supply line 500 is provided on the clamp arm 100. In combination with Figure 6, the power supply line 500 of the present embodiment has two branch lines 510, and the ends of the two branch lines 500 are connected to the two electrode heads 200 in a one-to-one correspondence. In order to facilitate wiring, the clamp arm 100 of the present embodiment includes an arm body 120 and a connecting member 130. The arm body 120 includes a first side wall 121, the two second side walls 122, the connecting piece 130 of this embodiment includes a third side wall 132 facing the other connecting piece 130 and a fourth side wall 133 adjacent to the third side wall 132 and forming an angle with each other (specifically, it can be a vertical angle in the figure); wherein, at least one of the two second side walls 122 is provided with a first wire branch groove 151, and at least one of the two fourth side walls 133 is provided with a second wire branch groove 152, and the adjacent first wire branch grooves 151 and second wire branch grooves 152 are connected to form a wire groove 150.

The above structural design opens the wire groove 150 on the clamp arm 100 to preliminarily fix the routing direction of the power supply line 500, which can ensure the stability of the position of the power supply line 500 during the operation and avoid the influence of the disorder of the power supply line 500 on the operation.

Combined with what is shown in FIG1 , the clamping device of this embodiment itself can be a tweezers-type structure, that is, in addition to the two clamping arms 100 mentioned above, the clamping device of this embodiment also includes a fixed arm 300, and the connecting ends of the two clamping arms 100 are fixedly connected to the fixed arm 300. The arm body 120 of the clamping arm 100 can be integrally formed with the fixed arm 300, and the function of the fixed arm 300 is to connect and fix the connecting ends of the two clamping arms 100. In order to cooperate with the above-mentioned wiring trough, the fixed arm 300 of this embodiment is provided with a fifth side wall 310 connected to the second side wall 122, and the end of the fifth side wall 310 away from the clamping arm 100 is provided with a limiting mechanism 400, and the power supply line 500 is installed in the limiting mechanism 400. The limiting mechanism 400 is used to limit the power supply line 500 from being separated from the fifth side wall 310. That is, during the routing process, the power supply line 500 is first preliminarily limited by the limiting mechanism 400, and then routed through the wiring trough, thereby ensuring the stability of the structure of the power supply line 500 and preventing the power supply line 500 from being separated from the fixed arm 300 and the wiring trough 150.

Optionally, the limiting mechanism 400 of this embodiment includes two limiting protrusions 410 respectively located on opposite sides of the fifth side wall 310, and the power supply line 500 is installed between the two limiting protrusions 410. The limiting protrusions 410 are used to limit both sides of the power supply line 500. The structure is simple and easy to implement.

In addition, the present embodiment further optimizes the design of the limiting mechanism 400, that is, the limiting mechanism 400 of the present embodiment also includes a first limiting member 420 and a second limiting member 430 located between the clamp arm 100 and the limiting protrusion 410; the first limiting member 420 is an L-shaped member, and the first limiting member 420 includes an integrally connected or integrally formed partition portion 421 and a handle portion 422, wherein the partition portion 421 of the present embodiment is mounted on the fifth side wall 310 through a pivot at one end close to the limiting protrusion 410 and is located between the two power supply lines 500, and the handle portion 422 of the present embodiment is vertically connected to the end of the partition portion 421 facing away from the limiting protrusion 410.

The second limiting member 430 of the present embodiment is a T-shaped member, and the second limiting member 430 includes a limiting portion 431 and a stopping portion 432 that are vertically connected. The limiting portion 431 has two opposite ends perpendicular to the length direction of the clamping device that are connected one-to-one with the two limiting protrusions 410. The limiting portion 431 and the limiting protrusions 410 form a limiting space for the power supply line 500. The stopping portion 432 of the present embodiment includes a vertical sixth side wall and a seventh side wall (not marked in the figure). The sixth side wall abuts against the partition portion 421, and the seventh side wall abuts against the handle portion 422. Of course, during the specific assembly, in addition to the abutment with the first limiting member 420, the sixth side wall and the seventh side wall can also be connected and fixed in other ways.

The above structural design utilizes the second limiting member 430 and the limiting protrusion 410 to form an enclosing limiting space, which can not only better limit the power supply line 500, but also before the second limiting member 430 is installed on the partition 421, the rotation of the partition 421 can be used to drive the position of the power supply lines 500 on both sides of the partition 421 to ensure reasonable routing.

In addition, for ease of operation, this embodiment also provides a plurality of anti-skid grooves 160 at intervals on the side wall of the clamp arm 100 facing away from the other clamp arm 100 . The anti-skid grooves 160 increase the friction between the clamp arm 100 and the human hand, making it easier for medical staff to operate the clamp arm 100 .

Embodiment 2

As shown in Figures 7 and 8, unlike the first embodiment, the clamp arm of this embodiment is not provided with a wire-passing structure, and the clamp arm 100 itself is made of a conductive material. In order to independently power the two clamp arms 100 and avoid electrical conduction between the two clamp arms 100, a preset interval is formed between the connection ends of the two clamp arms 100 of this embodiment, and at least one insulating connector 600 is provided in the preset interval. The number of insulating connectors 600 can be two as shown in the figure, and the shape can be a columnar structure with a cross-shaped cross section. The opposite sides of each insulating connector 600 are respectively connected and fixed to the connection ends of the two clamp arms 100, and the connection ends of each clamp arm 100 are electrically connected to the power supply line. In this way, there is no need to design wiring on the clamp arm, simplifying the structure. The material of the two insulating connectors 600 of this embodiment is preferably ceramic.

In addition, a cylindrical insulating sheath 700 may be provided at the connection end of the two clamp arms 100 to protect the internal insulating connector. The material of the insulating sheath 700 is preferably PEEK (polyetheretherketone). Optionally, an insulating coating (not shown in the figure) may be provided at the handle portion (the hand-held portion during clamping) of the clamp arm 100 to improve the safety of the operation.

Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. A bipolar electrocoagulator, characterized by comprising two clamping arms (100) and two electrode heads (200);

the clamping arms (100) comprise opposite connecting ends and free ends, the connecting ends of the two clamping arms (100) are connected, and the free ends of the two clamping arms (100) can be relatively close to or far away from each other;

the two electrode heads (200) are arranged at the two free ends in a one-to-one correspondence manner and are detachably matched with the free ends;

the clamping arm (100) is provided with a wire passing groove (150) for accommodating the power supply circuit (500) to pass through;

when the arm (100) comprises an arm body (120) and a connecting piece (130), the arm body (120) comprises a first side wall (121) and two second side walls (122), the connecting piece (130) comprises a third side wall (132) facing the other connecting piece (130) and two fourth side walls (133) adjacent to the third side wall (132) and forming an angle with each other;

Wherein at least one of the two second side walls (122) is provided with a first wire passing branch groove (151), at least one of the two fourth side walls (133) is provided with a second wire passing branch groove (152), and the adjacent first wire passing branch groove (151) and the second wire passing branch groove (152) are in butt joint to form the wire passing groove (150);

The bipolar electrocoagulator further comprises a fixed arm (300), and the connecting ends of the two clamping arms (100) are fixedly connected to the fixed arm (300); the fixing arm (300) is provided with a fifth side wall (310) connected with the second side wall (122), one end of the fifth side wall (310) away from the clamping arm (100) is provided with a limiting mechanism (400), the limiting mechanism (400) is internally provided with the power supply circuit (500), and the limiting mechanism (400) is used for limiting the power supply circuit (500) to be separated from the fifth side wall (310);

the limiting mechanism (400) comprises two limiting protrusions (410) which are respectively positioned on two opposite sides of the fifth side wall (310), and the power supply circuit (500) is arranged between the two limiting protrusions (410);

the limiting mechanism (400) further comprises a first limiting piece (420) and a second limiting piece (430) which are positioned between the clamping arm (100) and the limiting protrusion (410);

The first limiting piece (420) comprises a separation part (421) and a handle part (422), one end of the separation part (421) close to the limiting protrusion (410) is pivotally mounted on the fifth side wall (310) and is positioned between two branch circuits (510) of the power supply circuit (500), and the handle part (422) is vertically connected to one end of the separation part (421) away from the limiting protrusion (410);

The second limiting part (430) comprises a limiting part (431) and a stopping part (432) which are vertically connected, two opposite ends of the limiting part (431) are connected with two limiting protrusions (410) in one-to-one correspondence, the limiting protrusions (410) enclose a limiting space of the power supply circuit (500), the stopping part (432) comprises a sixth side wall and a seventh side wall which are vertical, the sixth side wall is abutted against the separating part (421), and the seventh side wall is abutted against the handle part (422).

2. The bipolar electrocoagulator according to claim 1, characterized in that the tail end of the electrode head (200) is provided with a first plug-in connection part (210), the free end is provided with a first slot (110), and the first plug-in connection part (210) is in plug-in connection with the first slot (110).

3. The bipolar electrocoagulator according to claim 1, characterized in that the clamping arm (100) comprises an arm body (120) and a connecting piece (130), the connecting piece (130) is detachably mounted on the arm body (120), one end of the arm body (120) facing away from the connecting piece (130) is the connecting end, and one end of the connecting piece (130) facing away from the arm body (120) is the free end.

4. A bipolar electrocoagulator according to claim 3, characterized in that a second socket (140) is provided at an end of the arm body (120) facing away from the connection end, and that the connection piece (130) is provided with a second plug-in part (131) for plug-in engagement with the second socket (140).

5. The bipolar electrocoagulator according to claim 4, characterized in that the end of the second plug-in part (131) facing away from the free end is provided with a limit catch (1311);

The arm body (120) comprises a first side wall (121) facing the other arm body (120) and two second side walls (122) adjacent to the first side wall (121) and forming an angle with each other, a limiting clamping hole (1211) communicated with the second slot (140) is formed in the first side wall (121), and the limiting clamping hole (1211) is clamped with the limiting clamp (1311).

6. The bipolar electrocoagulator according to any one of claims 1-5, characterized in that the clamping arms (100) are made of conductive material, a preset interval is formed between the connection ends of the two clamping arms (100), at least one insulating connecting piece is arranged in the preset interval, two sides of the insulating connecting piece are respectively connected and fixed with the connection ends of the two clamping arms (100), and the connection ends of the clamping arms (100) are electrically connected with a power supply circuit (500).