CN211243685U - High-frequency endoscope operation electrode - Google Patents

Abstract

The utility model discloses a high frequency endoscope operation electrode, including electrode body, outer sheath pipe, the fixed cover section of thick bamboo subassembly and the handle that has near-end and distal end, wherein: the electrode body comprises a bent section at the far end and a straight section at the near end, the far end of the bent section is provided with two electrode tips which are arranged at intervals, and the two electrode tips and the middle insulating layer form an arc surface together; the outer sheath tube is in a hollow tube shape, and the distal end of the outer sheath tube is in an open shape and is in smooth transition; the electrode body is arranged in the outer sheath tube in a penetrating mode, and the bending section at the far end of the electrode body can be smoothly stretched in the far end opening of the outer sheath tube. The high-frequency endoscope operation electrode provided by the utility model is beneficial for doctors to clearly see the condition of the action area, and can relatively increase the contact area with the target tissue and prevent the head part of the electrode from scratching the tissue; thereby realizing the functions of blood coagulation and ablation, improving the working efficiency and shortening the operation time.

Description

High-frequency endoscope operation electrode

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a high frequency endoscope operation electrode.

Background

The high-frequency endoscopic surgery electrode is a high-frequency electrode used for finishing surgery operation under an endoscope, and belongs to the application part of high-frequency surgery equipment; under the condition of endoscopic operation, the instrument enters into the human body through an endoscopic instrument pore passage or other instrument passages and is used for carrying out conventional ablation, blood coagulation and the like on human tissues. The working principle is as follows: the two electrodes are assembled on the same support, and when the high-frequency operation equipment outputs a high-frequency current with a certain waveform, the high-frequency current flows between the two electrodes and directly acts on a human body. The working electrode and the return electrode are arranged at the electrode head end, one end is the working electrode, the other end is the return electrode, current flows out of the working electrode, passes through tissues between the two electrodes and returns to the high-frequency operation equipment through the return electrode and the cable. The high-density radio-frequency current is utilized to generate a concentrated heat effect on local biological tissues to vaporize the tissues and tissue components, and due to the small area of the effective electrode, enough heat can be generated locally in a short time to coagulate blood vessels to a certain depth, so that the surgical purposes of ablation and blood coagulation in clinical surgery are fulfilled.

In the conventional endoscope minimally invasive surgery, in order to ensure clear surgical field, a high-frequency endoscope operation electrode is needed for coagulation, and particularly in the orthopedic minimally invasive surgery, a synovial membrane shelter and the like near a target point are removed by ablation through the high-frequency endoscope operation electrode. Because of the restriction of the endoscope pore canal, the electrode can not reach the target area through translation, and the electrode head can extend out of the outer sheath tube and naturally bend for a certain angle by pressing the handle electrode body, so that the electrode head acts on the target area.

The high-frequency endoscope operation electrode in the prior art is generally a handheld structure with an electrode body capable of extending and bending, and the electrode body is controlled to stretch and retract by pressing and returning a handle; the electrode head has small distance between two electrodes, low ablation and coagulation efficiency, unsmooth expansion and contraction of the electrode body, uncomfortable operation of doctors and prolonged operation time.

For example, the published patent CN202397597U discloses a bendable bipolar electrode, which comprises a fixed frame, wherein the front end of the fixed frame is connected with a guide sheath, the bipolar electrode passes through the guide sheath, the front end of the bipolar electrode is an electrode tip, and the other end of the bipolar electrode is connected with the fixed frame; however, the limiting groove and the limiting rod in the limiting structure are respectively positioned at the upper sides of the single sides of the sheath fixing frame and the electrode fixing frame, the single-side limiting easily causes the relative inclination of the fixing frame and the fixing frame, the central axes are crossed, and friction is generated when the relative positions of the two fixing frames move; and the electrode has insufficient bending elasticity, which easily causes the electrode to extend for the same length every time, the bending angle is indefinite, and the electrical connection between the connecting terminal and the electrode bipole is unstable.

For example, published patent CN202526297U discloses a bipolar radiofrequency forceps, which comprises an electrode assembly, an outer tube assembly, a main body, an electrode plug and a handle; the handle is of a split structure and comprises a front handle sleeve, a rear handle sleeve and a spring plate, wherein two ends of the spring plate are respectively connected with the front handle sleeve and the rear handle sleeve; the front handle sleeve and the rear handle sleeve are respectively connected with the main body. However, the handle body is of a split structure, the front handle sleeve and the rear handle sleeve are respectively connected with the elastic sheet through screws, the appearance is poor, the assembly process is complex, and the production efficiency is low.

And published patent CN205181469U discloses a portable plasma scalpel, wherein a front sleeve and a rear sleeve are in concave-convex fit, the front sleeve and a cutter bar assembly are fixed through a front nut cap, a small hole is arranged in the rear nut cap for a power line to penetrate, the rear nut cap is fixed on the rear sleeve, and a front handle and a rear handle are respectively arranged on the front sleeve and the rear sleeve. However, the front handle and the front handle jointly form a handle which is splayed in shape, and the palm needs to be greatly opened during holding, so that the hand holding and pressing are relatively laborious.

In conclusion, the electrode ablation and coagulation efficiency of the prior art is low, because the ablation and coagulation functions are mainly realized through the electrode head, the structure of the electrode head and the distance between the two electrode tips directly influence the action range of electromagnetic energy generated by high-frequency current, and therefore the ablation and coagulation efficiency is related to the structure of the electrode head and the distance between the two electrode tips under the condition of the same frequency and power; the electrode body is not flexible smoothly, the main influencing factor is edge sharpening of the sheath tube to block the electrode body from stretching, and on the other hand, the factor is that the resilience of the handle is insufficient, and then the relative radial movement between the sleeves generates friction; the bending angle of the electrode body extending out every time is indefinite, the reliability of the electrical connection between the guide wire and the connecting wire is insufficient, the connection process is complex, and the connection mode between the guide wire and the connecting wire is mainly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a high-frequency endoscope operation electrode for solving the problems in the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a high frequency endoscope operation electrode, including electrode body, outer sheath pipe, the fixed sleeve subassembly and the handle that have near-end and distal end, wherein:

the electrode body comprises a bent section at the far end and a straight section at the near end, the far end of the bent section is provided with two electrode tips which are arranged at intervals, and the two electrode tips and the middle insulating layer form an arc surface together;

the outer sheath tube is in a hollow tube shape, and the distal end of the outer sheath tube is in an open shape and is in smooth transition;

the electrode body is arranged in the outer sheath tube in a penetrating mode, and the bending section at the far end of the electrode body can be smoothly stretched in the far end opening of the outer sheath tube.

Furthermore, the electrode body consists of two electrode heads, an insulating layer, two guide wires and a double-cavity tube, wherein the two guide wires are arranged in the double-cavity tube, and the far ends of the two guide wires are respectively connected with the two electrode heads one by one.

Further preferably, the distal end of the guide wire is formed by at least three continuous branch sections bent at a certain angle.

Further preferably, the double-lumen tube is made of thermoplastic resin and integrally covers the outer surface of the guide wire.

Further, fixed sleeve subassembly includes distal end nut, axle sleeve pipe, distal end sleeve pipe, near-end sleeve pipe and the near-end nut that coaxial axle center and arranged in proper order from distal end to near-end, wherein:

the far end of the far end nut is fixedly connected with the near end of the outer sheath tube, the near end of the far end nut is connected with the far end of the shaft sleeve, and the near end of the shaft sleeve is movably sleeved in the far end sleeve;

the near end of the far-end sleeve is fixed in the near-end sleeve, and the near end of the near-end sleeve is fixedly connected with the near-end nut;

the straight section of the near end of the electrode body sequentially penetrates through the far end nut, the shaft sleeve, the far end sleeve and the near end sleeve from the near end of the outer sheath tube to be connected with the near end nut.

Further preferably, the proximal end of the shaft sleeve extends out of the proximal end of the distal sleeve, and at least one snap spring for limiting the distal sleeve is embedded in the outer wall of the shaft sleeve along the circumferential direction of the shaft sleeve.

Further preferably, the proximal end of the proximal sleeve is connected with the distal end internal thread of the proximal nut, and a positioning sleeve is arranged in the proximal cavity of the proximal nut;

the near ends of the two guide wires are respectively in press connection with guide wire terminals, the far ends of the two wire cores are respectively in press connection with wire core terminals, the two guide wire terminals and the two wire core terminals are respectively in two groups, and the two guide wire terminals and the two wire core terminals are in relatively close press connection with each other through near-end nuts in grooves formed in the side end face of the positioning sleeve and the side end face of the near-end sleeve.

Further preferably, one group of the wire guide terminal and the wire core terminal and the other group of the wire guide terminal and the wire core terminal are arranged in a staggered mode, and the horizontal distance between the wire guide terminal and the wire core terminal is larger than or equal to 2 mm.

Further, the handle includes metal shrapnel, distal end handle cover and near-end handle cover, wherein:

the distal handle sleeve is arranged at the distal end of the metal elastic sheet, and the top end of the distal side of the metal elastic sheet is fixed on the distal end part of the shaft sleeve close to the proximal side of the distal nut through a ferrule;

the near-end handle sleeve is arranged at the near end of the metal elastic sheet, and the top end of the near-end side of the metal elastic sheet is fixed on the far-end sleeve through the near-end sleeve.

Further, still include the connector, the connector includes the sinle silk, cladding in the protect line cover and the plug of sinle silk outer wall, wherein:

the two wire cores are provided, the near ends of the two wire cores are respectively connected with the plug, and the far ends of the two wire cores are respectively connected with wire core terminals in a pressing mode;

each wire core terminal and the corresponding guide wire terminal are tightly pressed in a groove formed by the side end face of the near-end sleeve and the side end face of the positioning sleeve through the near-end sleeve respectively.

The above technical scheme is adopted in the utility model, compared with the prior art, following technological effect has:

(1) the bipolar head with the cambered surface structure is beneficial for a doctor to clearly see the condition of an action area, meanwhile, the contact area with target tissues can be relatively increased, and the smooth and corner-free contour prevents the head of the electrode from scratching the tissues; human tissues which are in contact with the two electrode tips and between the two electrode tips are equivalent to resistance, high-frequency current generates resistance heat through the human body resistance between the electrode tips, so that blood coagulation and ablation functions are realized, the larger distance between the two electrode tips is provided, the action range is relatively increased, the working efficiency is improved, the operation time is shortened, and the operation is smoother;

(2) the distal end of the sheath tube is open, and when the curved part of the electrode body stretches out and draws back from the sheath tube, only the smooth inner wall of the sheath tube is rubbed, and the port with a relatively sharp edge part is not scratched;

(3) the shaft sleeve and the distal sleeve are limited by the clamp spring, and the clamp spring structure is similar to a sector ring, wherein the central angle of the sector ring is more than or equal to 180 degrees, and the central axis of the shaft sleeve is superposed with the central axes of the distal sleeve, the proximal sleeve and the electrode body when the handle is in a natural release state, so that when the handle is squeezed, the distal sleeve moves relative to the shaft sleeve, and the friction force is small; thereby the electrode body is more smooth to stretch and retract, the operation of a doctor is smoother, the operation time is relatively shortened, and the operation is smoother; the handle is extruded by the same distance every time, the length of the electrode body extending out of the outer sheath tube and the bending angle are relatively stable, and the operation of a doctor is more convenient;

(4) the wire guide terminal and the wire core terminal are connected in a crimping mode, the production efficiency is high, the two wires and the wire core are crimped in the grooves at different positions, the contact area of the wires and the wire core is increased by the wire guide terminal and the wire core terminal, and the two wires and the two wire cores are tightly pressed and fixed in the two grooves on one side of the near-end sleeve by the positioning sleeve and the near-end nut, so that the two wires and the two wire cores are more reliably electrically connected;

(5) the distal end of the guide wire of the traditional product is generally formed by an arc section, the distal end of the guide wire of the utility model is formed by at least three continuous branch sections which are bent at a certain angle, on one hand, the bonding strength of the guide wire and the double-cavity tube can be improved, and the risks of electrode tip dislocation and the like in the use process of the product are reduced; on the other hand, the bending elasticity of the electrode can be improved, the stability of the extending length and the bending angle of the electrode tip every time is ensured, and the clinical safety is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a high-frequency endoscopic surgical electrode according to the present invention;

FIG. 2 is a partially enlarged structural view of a portion A of the high-frequency endoscopic surgery electrode shown in FIG. 1;

FIG. 3 is a partially enlarged structural view of a portion B of the high-frequency endoscopic surgery electrode shown in FIG. 1;

FIG. 4 is a partially enlarged structural view of a portion C of the high-frequency endoscopic surgery electrode shown in FIG. 1;

FIG. 5 is a schematic diagram of a side view and a top view of a guide wire in a high frequency endoscopic surgical electrode according to the present invention;

FIG. 6 is a schematic diagram showing a side view and a sectional view of an outer sheath tube of the high-frequency endoscopic surgery electrode according to the present invention;

wherein the reference symbols are:

10-electrode body, 11-bending section, 12-straight section, 13-electrode head, 14-insulating layer, 15-guide wire and 151-branch section; 16-a dual lumen tube; 20-outer sheath; 30-fixing sleeve assembly, 31-distal nut, 32-ferrule, 33-shaft sleeve, 34-distal sleeve, 35-proximal sleeve, 36-proximal nut, 37-positioning sleeve, 38-snap spring, 39-guide wire terminal, 310-wire core terminal; 40-handle, 41-metal shrapnel, 42-distal handle sleeve, 43-proximal handle sleeve; 50-connector, 51-wire core, 52-wire sheath and 53-plug.

Detailed Description

Exemplary embodiments that embody features and advantages of the present invention will be described in detail in the following description. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.

The present invention will be described in detail and specifically with reference to specific embodiments so as to provide a better understanding of the present invention, but the following embodiments do not limit the scope of the present invention. In addition, the utility model discloses when describing the position to the direction that is close to operating personnel relative to the patient during the operation is "near-end", and the direction of keeping away from operating personnel is "distal end".

The present invention will be described in detail and specifically with reference to specific embodiments so as to provide a better understanding of the present invention, but the following embodiments do not limit the scope of the present invention.

Example 1

Referring to fig. 1 and 6, the present embodiment provides a high-frequency endoscopic surgery electrode, which includes an electrode body 10 having a proximal end and a distal end, an outer sheath tube 20, a fixing sleeve assembly 30, and a handle 40, wherein the electrode body 10 is movably disposed inside the outer sheath tube 20, and the proximal end of the electrode body 10 is connected to the fixing sleeve assembly 30, and the electrode body 10 can be moved telescopically inside the outer sheath tube 20 under the action of the handle 40.

In the present embodiment, as shown in fig. 1, the electrode body 10 includes a distal curved section 11 and a proximal straight section 12, the distal end of the curved section 11 is provided with two spaced apart electrode tips 13, the two electrode tips 13 and the middle insulating layer 14 together form an arc surface, and the two electrode tips 13 are spaced apart by the middle insulating layer 14, and the size of the gap affects the electrode action range. The electrode tips 13 of the two electrodes and the middle insulating layer 14 together form a spherical surface, which is beneficial for doctors to clearly see the condition of the action area, and simultaneously, the contact area with the target tissue can be relatively increased, and the smooth edge-free outline prevents the head of the electrode from scratching the tissue. The thickness of the insulating layer 14 between the two electrode tips 13 is 0.3mm, and the two electrode tips have a larger distance, so that the effective range of ablation and blood coagulation is increased.

In this embodiment, as shown in fig. 1, the sheath 20 is a hollow tube, and the distal end thereof is open and smoothly transited, so that the lateral edge portion is smoothly transited; the electrode body 10 is inserted into the outer sheath 20, and the bending section 11 at the distal end thereof can be smoothly extended and retracted into the distal opening of the outer sheath 20. The distal end of the outer sheath 20 is open, and when the bending section 11 at the distal end of the electrode body 10 is extended or retracted relative to the outer sheath 20, the bending section only rubs the smooth inner wall of the outer sheath 20, and does not scratch the relatively sharp end of the edge of the outer sheath 20.

Example 2

Unlike the above-described embodiment 1, referring to fig. 2, the high-frequency endoscopic surgery electrode according to this embodiment 2 is provided with an electrode body 10 composed of two electrode tips 13, an insulating layer 14, two guide wires 15, and a double lumen tube 16, wherein the two guide wires 15 are disposed in the double lumen tube 16, and distal ends thereof are connected to the two electrode tips 13 one by one, respectively, and distal end portions of the two guide wires 15 have the same structure and are formed by one-time press forming. In addition, the insulating layer 14 is part of the distal intermediate wall of the dual lumen tube 16 and is integrally formed therewith.

In this embodiment, the distal end of the guide wire 15 is formed by at least three continuous and angled branch sections 151. Preferably, as shown in fig. 5, for a schematic side view and a schematic top view of the guide wire in the high-frequency endoscopic surgery electrode, the branch segment 151 bent at a certain angle is six segments, a certain angle is formed between each segment, the two guide wires 15 are respectively inserted into the double lumen tube 16 and then are subjected to heat shaping, and finally the bent segment 11 at the distal end part of the electrode body is shaped, and the double lumen tube 16 is made of thermoplastic resin and integrally covers the outer surface of the guide wire 15.

In the present embodiment, in the handle 40, in the naturally released state, the bent portion of the electrode body 10 is bound inside the outer sheath 20, and the handle 10 is manually pressed, and the angle is relatively stable in the case where the electrode body 10 is extended from the outer sheath 20 by the same length each time.

Compared with the conventional product, the distal end of the guide wire 15 is formed by at least three continuous branch sections 151 bent at a certain angle, so that on one hand, the guide wire of the embodiment can improve the bonding strength between the guide wire and the double-lumen tube 16, and reduce the risks of dislocation of the electrode tip 13 and the like in the use process of the product; on the other hand, the bending elasticity of the whole electrode body 10 can be improved, the stability of the extending length and the bending angle of the electrode head 13 every time can be ensured, and the clinical safety can be improved.

Example 3

In contrast to the above-mentioned embodiment 1, with continued reference to fig. 1, the high-frequency endoscopic surgery electrode according to the embodiment 3 is provided, wherein the fixing sleeve assembly 30 includes a distal nut 31, a shaft sleeve 33, a distal sleeve 34, a proximal sleeve 35 and a proximal nut 36, which are coaxially and sequentially arranged from the distal end to the proximal end.

In this embodiment, as shown in fig. 1, a distal end of the distal nut 31 is fixedly connected to a proximal end of the outer sheath 20, a proximal end thereof is connected to a distal end of the shaft sleeve 33, and a proximal end of the shaft sleeve 33 is movably sleeved in the distal sleeve 34; the proximal end of the distal sleeve 34 is fixed in the proximal sleeve 35, and the proximal end of the proximal sleeve 35 is fixedly connected with the proximal nut 36; the straight section 12 at the proximal end of the electrode body 10 passes through the distal nut 31, the shaft sleeve 33, the distal sleeve 34, the proximal sleeve 35 and the proximal nut 36 from the proximal end of the outer sheath 20 in sequence.

In this embodiment, as shown in fig. 3, the proximal end of the shaft sleeve 33 extends from the proximal end of the distal sleeve 34, and at least one snap spring 38 for limiting the position of the distal sleeve 34 is embedded in the outer wall of the shaft sleeve along the circumferential direction. The clamp spring 38 is adopted between the shaft sleeve 33 and the far-end sleeve 34 for limiting, the clamp spring 38 is approximately in a sector ring shape, the central angle of the sector ring shape is more than or equal to 180 degrees, and when the handle 40 is in a natural release state, the central axis of the shaft sleeve 33 is superposed with the central axes of the far-end sleeve 34, the near-end sleeve 35 and the electrode body 10, so when the handle 40 is squeezed, the far-end sleeve 34 moves relative to the shaft sleeve 33, and the friction force is small; therefore, the electrode body 10 can stretch more smoothly, the operation of a doctor is smoother, the operation time is relatively shortened, and the operation is smoother.

In this embodiment, as shown in fig. 4, the proximal end of the proximal sleeve 35 is connected to the distal end internal thread of the proximal nut 36, and a positioning sleeve 37 is disposed in the proximal cavity of the proximal nut 36; the proximal ends of the two guide wires 15 are respectively crimped with guide wire terminals 39, the distal ends of the two wire cores 51 are respectively crimped with wire core terminals 310, the two guide wire terminals 39 and the two wire core terminals 310 are respectively divided into two groups, and the two groups are respectively crimped in a groove formed by the side end surface of the positioning sleeve 37 and the side end surface of the proximal sleeve 35 through a proximal nut 36, so that the corresponding terminals are in close contact, and the electrical connection is realized. The guide wire terminal and the wire core terminal are connected in a crimping mode, the production efficiency is high, the two guide wires 15 and the wire core 51 are crimped in grooves at different positions, the contact area of the guide wires 15 and the wire core 51 is increased by the guide wire terminal 39 and the wire core terminal 310, and the two guide wires 15 and the two wire cores 51 are pressed and fixed in the two grooves on one side of the near-end sleeve 34 by the positioning sleeve 37 and the near-end nut 36, so that the two guide wires 15 and the two wire cores 51 are electrically connected more reliably.

In this embodiment, as a preferred technical solution, one set of the wire-guiding terminal 39 and the wire-core terminal 310 and the other set of the wire-guiding terminal 39 and the wire-core terminal 310 are arranged in a staggered manner, as shown in fig. 4, one set of the wire-guiding terminal 39 and the wire-core terminal 310 are contacted and pressed on a plane a, the other set of the wire-guiding terminal 39 and the wire-connecting terminal 310 are contacted and pressed on a plane b, both the plane a and the plane b are perpendicular to the central axis of the handle 40, and the two planes are spaced by 2mm, that is, the two slots of the proximal sleeve are spaced by 2mm from the central axis of the proximal sleeve, so as to ensure.

Example 4

In contrast to the above embodiment 1, with continued reference to fig. 1, the high-frequency endoscopic surgery electrode according to embodiment 4 is provided, wherein the handle 40 includes a metal spring 41, a distal stem sleeve 42 and a proximal stem sleeve 43, and wherein: the distal handle sleeve 42 is arranged at the distal end of the metal elastic sheet 41, and the distal end of the metal elastic sheet 41 is fixed on the distal end part of the shaft sleeve 33 close to the proximal side of the distal nut 31 through the ferrule 32; the proximal handle 43 is disposed at the proximal end of the metal spring 41, and the proximal end of the metal spring 41 is fixed to the distal sleeve 34 through the proximal sleeve 35.

In this embodiment, the connector 50 further includes a wire core 51, a wire sheath 52 covering an outer wall of the wire core 51, and a plug 53, wherein: the number of the wire cores 51 is two, the near ends of the wire cores are respectively connected with the plug 53, and the far ends of the wire cores are respectively crimped with wire core terminals 310; each wire core terminal 310 and the corresponding guide wire terminal 39 are respectively and tightly pressed in a groove formed by the side end surface of the positioning sleeve 37 and the side end surface of the proximal sleeve 35 through a proximal nut 36.

The above detailed description of the embodiments of the present invention is only for exemplary purposes, and the present invention is not limited to the above described embodiments. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.

Claims (10)

1. A high frequency endoscopic surgery electrode, comprising an electrode body (10) having a proximal end and a distal end, an outer sheath tube (20), a fixed sleeve assembly (30) and a handle (40), wherein:

the electrode body (10) comprises a bent section (11) at the far end and a straight section (12) at the near end, two electrode tips (13) which are arranged at intervals are arranged at the far end of the bent section (11), and the two electrode tips (13) and a middle insulating layer (14) form an arc surface together;

the outer sheath tube (20) is in a hollow tubular shape, and the far end of the outer sheath tube is in an open shape and is in smooth transition;

the electrode body (10) is arranged in the outer sheath tube (20) in a penetrating mode, and the bending section (11) at the far end of the electrode body can be smoothly stretched in the far end opening of the outer sheath tube (20).

2. A high-frequency endoscopic surgery electrode according to claim 1, characterized in that the electrode body (10) is composed of two electrode tips (13), an insulating layer (14), two guide wires (15) and a double lumen tube (16), wherein the two guide wires (15) are arranged in the double lumen tube (16) and the distal ends thereof are respectively connected with the two electrode tips (13) one by one.

3. The high-frequency endoscopic surgery electrode according to claim 2, characterized in that the distal end of the guide wire (15) is constituted by at least three continuous and angled branches (151).

4. A high frequency endoscopic surgery electrode according to claim 2, characterized in that the double lumen tube (16) is integrally coated on the outer surface of the guide wire (15) by thermoplastic resin.

5. The high frequency endoscopic surgery electrode according to claim 1, characterized in that the fixed sleeve assembly (30) comprises a distal nut (31), a shaft sleeve (33), a distal sleeve (34), a proximal sleeve (35) and a proximal nut (36) coaxially and sequentially arranged from a distal end to a proximal end, wherein:

the far end of the far end nut (31) is fixedly connected with the near end of the outer sheath tube (20), the near end of the far end nut is connected with the far end of the shaft sleeve (33), and the near end of the shaft sleeve (33) is movably sleeved in the far end sleeve (34);

the proximal end of the distal sleeve (34) is fixed in the proximal sleeve (35), and the proximal end of the proximal sleeve (35) is fixedly connected with the proximal nut (36); and

the straight section (12) at the near end of the electrode body (10) sequentially penetrates through the far end nut (31), the shaft sleeve (33), the far end sleeve (34) and the near end sleeve (35) from the near end of the outer sheath tube (20) and is connected with the near end nut (36).

6. A high frequency endoscopic surgery electrode according to claim 5, characterized in that the proximal end of the shaft sleeve (33) extends from the proximal end of the distal sleeve (34), and the outer wall thereof is embedded with at least one snap spring (38) along the circumferential direction thereof for limiting the distal sleeve (34).

7. The high frequency endoscopic surgery electrode according to claim 5, characterized in that the proximal end of the proximal sleeve (35) is connected with the distal end internal thread of the proximal nut (36), and a positioning sleeve (37) is arranged in the proximal cavity of the proximal nut (36);

the near ends of the two guide wires (15) are respectively crimped with guide wire terminals (39), the far ends of the two wire cores (51) are respectively crimped with wire core terminals (310), the two guide wire terminals (39) and the two wire core terminals (310) are respectively two groups, and the near end sleeve (35) is relatively tightly crimped in a groove formed by the side end surface of the positioning sleeve (37) and the side end surface of the near end sleeve (35).

8. The high frequency endoscopic surgery electrode according to claim 7, wherein one set of the guide wire terminal (39) and the core terminal (310) is arranged in a misaligned arrangement with the other set of the guide wire terminal (39) and the core terminal (310).

9. The high frequency endoscopic surgery electrode according to claim 5, characterized in that the handle (40) comprises a metal dome (41), a distal stem sleeve (42) and a proximal stem sleeve (43), wherein:

the distal handle sleeve (42) is arranged at the distal end of the metal elastic sheet (41), and the distal end of the metal elastic sheet (41) is fixed on the distal end part of the shaft sleeve (33) close to the proximal side of the distal nut (31) through a ferrule (32);

the near-end handle sleeve (43) is arranged at the near end of the metal elastic sheet (41), and the top end of the near-end side of the metal elastic sheet (41) is fixed on the far-end sleeve (34) through the near-end sleeve (35).

10. The high frequency endoscopic surgery electrode according to claim 1, further comprising a connector (50), wherein the connector (50) comprises a wire core (51), a wire sheath (52) covering the outer wall of the wire core (51) and a plug (53), wherein:

the number of the wire cores (51) is two, the near ends of the wire cores are respectively connected with the plug (53), and the far ends of the wire cores are respectively connected with wire core terminals (310) in a pressing mode;

each wire core terminal (310) and the corresponding guide wire terminal (39) are tightly pressed in a groove formed by the side end surface of the proximal sleeve (35) and the side end surface of the positioning sleeve (37) through the proximal sleeve (35).

Images