CN117017472B

CN117017472B - Bipolar operation electrode

Info

Publication number: CN117017472B
Application number: CN202311039749.2A
Authority: CN
Inventors: 鲁晓杰; 张亚卓; 郝解赫; 许浩然; 丁晨玮; 顾铭; 王曼曼; 曹松梅
Original assignee: Zhenjiang Hengsheng Juan'en Medical Devices Co ltd
Current assignee: Zhenjiang Hengsheng Juan'en Medical Devices Co ltd
Priority date: 2023-08-16
Filing date: 2023-08-16
Publication date: 2024-02-02
Anticipated expiration: 2043-08-16
Also published as: CN117017472A

Abstract

The invention discloses a bipolar surgical electrode, which belongs to the field of medical appliances and comprises a shell, a tube body, a needle tube, a connecting rod assembly and a forceps handle, wherein the connecting rod assembly is fixed in the shell, one end of the needle tube is fixed in the shell and is provided with an elastically opened bipolar forceps tip, the forceps handle is movably arranged outside the shell, an adjusting unit is further arranged in the shell, and the adjusting unit is provided with an adjusting end for moving along with the tube body. According to the invention, the current passing through the bipolar forceps tip is controlled in the clamping process by the adjusting component, so that the bipolar electrocoagulation has different electrocoagulation power at different intervals, the problem that the current power cannot be accurately controlled due to different tissue thickness is avoided, and the vascular is prevented from being burnt due to overlarge power and being adhered to tissues is avoided.

Description

Bipolar operation electrode

Technical Field

The invention relates to the technical field of medical appliances, in particular to a bipolar surgical electrode.

Background

Bipolar surgical electrodes are a type of device that provide high frequency electrical energy to focal tissue through forceps and two tips of a wire. The blood vessel between the two ends of the forceps tip of the bipolar forceps is dehydrated and solidified, and the purpose of hemostasis can be achieved. In the using process of the bipolar operation electrode, the electric coagulation temperature is controlled to be between 40 and 100 ℃, so that the electric coagulation temperature is prevented from being too high, and the electric coagulation instrument and tissues are prevented from being adhered to each other.

At present, in the operation process of the bipolar operation electrode, the discharge current of the electrocoagulation needs to be manually adjusted at any time according to the thickness of the tissue, the operation process is generally gradually improved from low current to high current, if the electrocoagulation current is carelessly adjusted to be overlarge, the tissue is easily damaged or the electrocoagulation instrument and the tissue are mutually adhered, and the operation time is prolonged.

Disclosure of Invention

The invention aims to provide a bipolar surgical electrode, which solves the problem that the electric coagulation current of bipolar electric coagulation cannot be accurately controlled in the background art.

In order to achieve the aim of the invention, the invention adopts the following technical scheme:

the utility model provides a bipolar operation electrode, includes casing, body, needle tubing, connecting rod assembly and tweezers handle, the connecting rod assembly is fixed in the casing, the one end of needle tubing is fixed in the casing, the other end of needle tubing extends the casing to have the bipolar tweezers point of elasticity opening, tweezers handle movable mounting is outside the casing to be used for driving the connecting rod assembly, body and connecting rod assembly drive connection, the connecting rod assembly is used for driving the axial displacement of body along the needle tubing, makes the opening or the centre gripping of the bipolar tweezers point of body drive, still install the regulating unit in the casing, the regulating unit has an adjusting end that is used for along with body displacement distance, adjusting end and body fixed connection, in the closed in-process of bipolar tweezers point, after the body drive adjusting end moved to the settlement position, the current intensity of bipolar tweezers point is controlled according to the distance control bipolar tweezers point to the bipolar tweezers point, makes the distance size of bipolar tweezers point and the current size of electric coagulation directly proportional.

Preferably, the adjusting unit comprises a resistor, the resistor is installed in the shell in a sliding connection mode, the resistor and the bipolar forceps tip are electrically connected in a serial connection mode, the adjusting end is installed in the resistor in a sliding mode along the axial direction of the tube body, and the resistor changes the resistance of the resistor through the sliding of the adjusting end.

Preferably, the adjustment unit further comprises a control module fixed within the housing, the control module being in driving connection with the resistor and being adapted to control the relative position of the resistor within the housing.

Preferably, the control module comprises a supporting piece, the supporting piece is fixed in the casing, rotate on the supporting piece and be fixed with worm, a first axle and No. two axles, the one end of worm runs through the supporting piece to extend out the casing, convex worm wheel is installed to the one end of a first axle, convex worm wheel meshes with the worm mutually, drive bevel gear is installed to the other end of a first axle, driven bevel gear is installed to the one end of No. two axles, drive bevel gear meshes with driven bevel gear, drive spur gear is installed to the other end of No. two axles, slidable mounting has the sliding rack on the casing to with resistor fixed connection, the sliding rack meshes with drive spur gear.

Preferably, the resistor comprises an insulating shell, a resistor plate is fixedly inserted into the insulating shell, a first conducting strip and a first conducting strip are fixed at one end of the resistor plate, two sliding contacts are arranged at the adjusting end, one sliding contact is slidably inserted into the first conducting strip, the other sliding contact is slidably inserted into the first conducting strip, the first conducting strip is electrically communicated with the first conducting strip through the adjusting end, a conducting lug electrically communicated with the first conducting strip is arranged at the other end of the resistor plate, a resistor lug electrically communicated with the first conducting strip is further arranged at the other end of the resistor plate, a second conducting strip and a third conducting strip are fixedly arranged on the shell, the conducting lug is abutted against the second conducting strip, and the resistor lug is abutted against the third conducting strip to form a series circuit.

Preferably, the first resistor disc comprises a first resistor segment and a second resistor segment, and the resistivity of the first resistor segment and the resistivity of the second resistor segment have a certain difference.

Preferably, the insulating housing is internally fixed with a connector, a first groove, a second groove and a third groove which are mutually communicated are formed in the connector along the axial direction of the needle tube, the end part of the first groove, which faces the tube body, is abutted against the connecting rod assembly, a clamping groove is formed in the second groove, a positioning block and two channels are fixed on the outer wall of the needle tube, the positioning block is clamped in the clamping groove, and the two channels are located in the third groove and abutted against one end, which is far away from the tube body, of the second groove.

Preferably, the side wall of the first groove is provided with a sliding groove, the resistor is inserted in the sliding groove in a sliding manner, the side wall of the first groove is provided with two mounting grooves, the second conductive sheet and the third conductive sheet are identical in structure and are inserted in the corresponding mounting grooves, the outer wall of the connector is provided with a rack sliding groove, the end part of the rack sliding groove extends into the first groove, and the sliding rack is inserted in the rack sliding groove in a sliding manner and extends out of the first groove to be fixedly connected with the resistor.

Preferably, the resistor is further provided with a damping module, and the damping module is abutted against the connector and used for increasing damping when the resistor slides.

Preferably, the damping module comprises a damping spring plate, the damping spring plate is fixed on the resistor, a plurality of damping grooves are formed in the connector, and the damping spring plate is inserted into the damping grooves.

The beneficial effects are that:

according to the distance between the bipolar forceps tips, the current intensity of the bipolar forceps tips is accurately controlled, so that the bipolar electrocoagulation has different electrocoagulation powers under different distances, the phenomenon that the power is too high to burn blood vessels and adhere with tissues due to incapability of accurately controlling the current powers with different tissue thicknesses is avoided, the distance between the bipolar forceps tips reaches a certain range through the adjusting component to discharge, misoperation can be avoided, and the use safety is improved.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention;

FIG. 2 is a cross-sectional view of a first embodiment of the invention;

FIG. 3 is a schematic diagram illustrating a connection relationship of a connecting rod assembly according to a first embodiment of the present invention;

fig. 4 is a schematic perspective view of a second embodiment of the present invention;

FIG. 5 is a schematic diagram of a regulating unit according to a second embodiment of the present invention;

FIG. 6 is a schematic diagram of a connection relationship between needle tubes in a second embodiment of the present invention;

FIG. 7 is an enlarged schematic view of the structure of FIG. 6;

FIG. 8 is a schematic structural view of a support member according to a second embodiment of the present invention;

FIG. 9 is a schematic diagram of an explosion structure of a resistor in a second embodiment of the present invention;

FIG. 10 is a schematic diagram illustrating a connection relationship between two resistors according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a first resistor in a second embodiment of the present invention;

fig. 12 is a schematic perspective view of a connector according to a second embodiment of the present invention;

fig. 13 is a schematic structural view of a rack runner in the second embodiment of the present invention;

fig. 14 is a schematic structural diagram of a second conductive sheet according to the second embodiment of the present invention;

fig. 15 is a schematic diagram of an installation structure of a damping spring in a second embodiment of the present invention.

In the figure: 1. a housing; 1a, an upper cover; 2. a tube body; 3. a needle tube; 31. bipolar forceps tips; 32. a fixed block; 33. a positioning block; 34. two-way; 4. a connecting rod assembly; 41. a first hinge block; 42. a second hinging block; 43. a first connecting rod; 44. a second connecting rod; 45. a spring; 5. forceps handles; 51. a spring arm; 6. an adjusting unit; 61. an adjustment end; 62. a resistor; 621. an insulating housing; 6211. an insulation chute; 622. a resistance plate; 623. a first conductive sheet; 6231. conductive bumps; 624. a first resistor sheet; 6241. a resistive bump; 624a, resistor segment number one; 624b, resistor segment No. two; 625. a second conductive sheet; 6251. a first mounting hole; 6252. a second mounting hole; 626. a third conductive sheet; 63. a support; 631. a first bending part; 632. a first worm hole; 633. a worm hole II; 634. a handle; 635. a second bending part; 636. a first shaft hole; 637. a third bending part; 638. a second shaft hole; 64. a worm; 65. a first shaft; 66. a second shaft; 67. circular arc worm wheel; 68. a drive bevel gear; 69. a driven bevel gear; 610. driving a spur gear; 611. sliding racks; 612. a conductive slip sheet; 8. a connector; 81. a first groove; 811. a sliding groove; 812. a mounting groove; 8121. a through groove; 8122. a positioning groove; 813. a damping groove; 82. a second groove; 821. a clamping groove; 83. a third groove; 84. a rack chute; 9. damping spring plate.

Detailed Description

So that the objects, technical solutions and advantages of the embodiments of the present disclosure are more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the terms "comprising" or "includes" and the like in this disclosure is intended to cover an element or article listed after that term and equivalents thereof without precluding other elements or articles. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

Example 1

Referring to fig. 1 to 3, the bipolar surgical electrode provided by the invention comprises a housing 1, a tube body 2, a needle tube 3, a connecting rod assembly 4 and a forceps handle 5, wherein the housing 1 is provided with an opening, an upper cover 1a is fixed on the opening, the connecting rod assembly 4 is fixed in the housing 1, one end of the needle tube 3 is fixed in the housing 1, the other end of the needle tube 3 extends out of the housing 1 and is provided with an elastically-opened bipolar forceps tip 31, the forceps handle 5 is movably arranged outside the housing 1 and is used for driving the connecting rod assembly 4, the tube body 2 is in driving connection with the connecting rod assembly 4, and the connecting rod assembly 4 is used for driving the tube body 2 to move along the axial direction of the needle tube 3 so that the tube body 2 drives the bipolar forceps tip 31 to be opened or clamped.

In some alternative embodiments, the bipolar forceps tip 31 further comprises a fixed block 32, the bipolar forceps tip 31 is fixed on the fixed block 32 in a plugging manner, and extends towards the inside of the tube body 2 through the fixed block 32, and the end parts of the bipolar forceps tip 31 are respectively connected with the positive electrode and the negative electrode; specifically, the fixing block 32 can be made of an insulating material, so that the short circuit of the bipolar forceps tip 31 can be avoided, and the electric coagulation effect is ensured.

In one example, the link assembly 4 includes a first hinge block 41, a second hinge block 42, two first links 43, two second links 44, and a spring 45 for driving the first hinge block 41 to slide toward the second hinge block 42, the first hinge block 41 is slidably mounted in the housing 1, the pipe body 2 is fixedly connected with the first hinge block 41, the second hinge block 42 is fixedly clamped in the housing 1, one ends of the two first links 43 are hinged to the first hinge block 41, the other ends are respectively hinged to one ends of the two second links 44, the other ends of the two second links 44 are hinged to the second hinge block 42, the first links 43 and the second links 44 are sequentially hinged end to form a parallelogram four-link mechanism, the spring 45 is sleeved on the outer wall of the pipe body 2, one end of the spring 45 is abutted in the housing 1, and the other ends of the spring 45 are abutted to the first hinge block 41.

In one example, the outer wall of the shell 1 is provided with a clamping groove, the forceps handles 5 are provided with elastic arms 51, and the elastic arms 51 are fixed in the clamping groove in a clamping manner.

The shell 1 is internally provided with an adjusting unit 6, the adjusting unit 6 is provided with an adjusting end 61 for moving along with the tube body 2, the adjusting end 61 is fixedly connected with the tube body 2, and after the tube body 2 drives the adjusting end 61 to move to a set position in the closing process of the bipolar forceps tip 31, the adjusting unit 6 controls the current intensity of the bipolar forceps tip 31 according to the distance of the bipolar forceps tip 31, so that the distance of the bipolar forceps tip 31 is in direct proportion to the current of electric coagulation.

Specifically, in the natural state, the elastic force of the spring 45 pushes the first hinge block 41 and the second hinge block 42 to be in the minimum state, and the bipolar forceps tip 31 is in the open state in the self elastic state; when the forceps handle 5 is pressed, the forceps handle 5 presses the connecting rod two 44 to move, the connecting rod two 44 drives the connecting rod one 43 to move, the connecting rod one 43 drives the hinging block one 41 to slide, the connecting rod one 43 drives the tube body 2 to move towards the direction of the bipolar forceps tip 31, the end part of the tube body 2 continuously presses the bipolar forceps tip 31 to clamp the bipolar forceps tip 31, when the bipolar forceps tip 31 reaches a working distance in the clamping process, the adjusting end 61 controls the current passing through the bipolar forceps tip 31 according to the moving distance of the tube body 2, the smaller the distance of the bipolar forceps tip 31 is, the larger the distance of the bipolar forceps tip 31 is, the current passing through the bipolar forceps tip 31 is larger until the set distance is exceeded, so that the bipolar electric coagulation has different electric coagulation powers under different distances, the problem that the power is excessively large to burn blood vessels due to different adjustment difficulties of tissue thickness is avoided, the bipolar surgical electrodes are prevented from adhering to tissues, and the distance of the bipolar forceps tip 31 reaches a certain range to discharge, misoperation can be avoided, and the use safety is improved.

Example two

Referring to fig. 4 to 15, a bipolar surgical electrode is further provided in this embodiment, and the specific structure of the bipolar surgical electrode in this embodiment is substantially the same as that of the bipolar surgical electrode in the first embodiment, and the bipolar surgical electrode in this embodiment further includes the following specific structure compared to the bipolar surgical electrode in the first embodiment.

As an example, referring to fig. 4 to 5, in order to facilitate adjustment of the initial interval of discharge of the bipolar forceps tip 31, the adjustment unit 6 includes a resistor 62, the resistor 62 is mounted in the housing 1 in a sliding connection manner, the sliding direction of the resistor 62 is arranged along the axial direction of the tube body 2, the resistor 62 is electrically connected with the bipolar forceps tip 31 in series by a wire, the adjustment end 61 is slidably mounted in the resistor 62 along the axial direction of the tube body 2, and the resistor 62 changes its own resistance by sliding of the adjustment end 61.

Specifically, the maximum resistance value of the resistor 62 is unchanged, the resistance length of the resistor 62 is larger than the moving length of the tube body 2, and when the resistor 62 moves, the relative position of the adjusting end 61 at the resistor 62 changes, so that the resistance value range of the resistor 62 is adjusted, the current discharged by the bipolar forceps tip 31 is suitable for different tissue thicknesses, and the current is prevented from being too large or too small.

Referring to fig. 5 to 8, in some alternative embodiments, to facilitate adjustment of the resistance value range of the resistor 62, the adjusting unit 6 further includes a control module fixed in the housing 1, and the control module is drivingly connected to the resistor 62 and is used to control the relative position of the resistor 62 in the housing 1, so as to facilitate control of the resistance value range of the resistor 62.

Further, the control module includes a support member 63, the support member 63 is fixed in the casing 1 through the mode of grafting, the rotation is fixed with worm 64, first axle 65 and second axle 66 on the support member 63, be provided with first bending portion 631 on the support member 63, be provided with worm hole one 632 on the first bending portion 631, the worm hole two 633 has been seted up on the support member 63, the one end rotation of worm 64 is fixed in worm hole one 632, and extend casing 1, the other end rotation of worm 64 is fixed in worm hole two 633, worm hole one 632, worm hole two 633 coincide with the central axis of worm 64, the tip that the worm 64 is located the casing 1 outside is pegged graft and is fixed with handle 634. The support 63 is provided with a second bending part 635, the second bending part 635 is provided with a first shaft hole 636, the first shaft 65 is rotationally inserted in the first shaft hole 636, one end of the first shaft 65 is provided with a circular arc worm wheel 67, the circular arc worm wheel 67 is meshed with the worm 64, and the other end of the first shaft 65 is provided with a driving bevel gear 68. The support 63 is provided with a third bending part 637, the third bending part 637 is provided with a second shaft hole 638, the second shaft 66 is rotationally inserted in the second shaft hole 638, one end of the second shaft 66 is provided with a driven bevel gear 69, the driving bevel gear 68 is meshed with the driven bevel gear 69, the other end of the second shaft 66 is provided with a driving spur gear 610, the shell 1 is provided with a sliding rack 611 in a sliding manner and fixedly connected with the resistor 62, and the sliding rack 611 is meshed with the driving spur gear 610.

When the operator rotates the handle 634, the handle 634 drives the worm 64 to rotate, the worm 64 drives the circular arc worm gear 67 to rotate, the circular arc worm gear 67 drives the drive bevel gear 68 to rotate, the drive bevel gear 68 drives the driven bevel gear 69 to rotate, the driven bevel gear 69 drives the second shaft 66 to rotate, the second shaft 66 drives the driving spur gear 610 to rotate, the driving spur gear 610 drives the sliding rack 611 to move, and the sliding rack 611 drives the resistor 62 to move, so that the relative position of the resistor 62 is controlled; the control module with the structure can control the sliding of the resistor 62, change the relative position of the resistor 62, simultaneously has the function of unidirectional transmission, can limit the sliding of the resistor 62, maintain the relative position of the resistor 62, and adopts the integral design, is convenient to be integrally arranged in the shell 1, has less change to the existing structure, and can effectively reduce the production cost of the bipolar operation electrode.

Referring to fig. 9 to 10, in order to facilitate the assembly of the resistor 62, in some alternative embodiments, the resistor 62 includes an insulating housing 621, a resistor plate 622 is inserted and fixed in the insulating housing 621, a first conductive sheet 623 and a first conductive sheet 624 are fixed at one end of the resistor plate 622 facing the tube 2, a conductive slide 612 is provided at the adjusting end 61, two sliding contacts are provided on the conductive slide 612, one sliding contact is slidably inserted into the first conductive sheet 623, the other sliding contact is slidably inserted into the first conductive sheet 624, the first conductive sheet 623 is electrically connected with the first conductive sheet 624 through the adjusting end 61, a conductive bump 6231 is disposed at the other end of the resistor plate 622 and is electrically connected with the first conductive sheet 623, a second conductive sheet 625 and a third conductive sheet 626 are fixed on the housing 1, the conductive bump 6231 and the second conductive sheet 625 are abutted, and a series loop is formed.

As an example, the resistor bump 6241 and the first resistor 624 are integrally designed, and may be made of a metal sheet or a composite material with a certain resistance value; the conductive bump 6231 and the first conductive sheet 623 are integrally designed, and a metal sheet with excellent guiding performance can be used; the insulating shell 621 is provided with an insulating sliding groove 6211, and the adjusting end 61 is slidably inserted into the insulating sliding groove 6211; the conductive sliding sheet 612 may be a metal sheet having excellent guiding performance; the second conductive sheet 625 is electrically connected with an external power supply; the third conductive sheet 626 is electrically connected to the bipolar forceps tip 31.

Specifically, the current flows through the second conductive sheet 625 to the conductive bump 6231, then flows through the conductive bump 6231 to the first conductive sheet 623, then flows through the adjusting end 61 to the first resistive sheet 624, the first resistive sheet 624 flows through the resistive bump 6241, then flows through the resistive bump 6241 to the third conductive sheet 626, and finally flows to the bipolar forceps tip 31 for discharging, and the current controls the magnitude of the current flowing through the first resistive sheet 624 by the resistance length of the bipolar forceps tip 31.

Referring to fig. 11, in order to adjust the discharge distance of the bipolar forceps tip 31, in some alternative embodiments, the first resistor 624 includes a first resistor 624a and a second resistor 624b, and the resistivity of the first resistor 624a is different from the resistivity of the second resistor 624 b.

Specifically, the first resistance section 624a is close to the pipe body 2, the second resistance section 624b is far away from the pipe body 2, and the resistance value of the second resistance section 624b is higher than that of the first resistance section 624 a; when the current passes through the first resistor 624a, the resistance is larger, and the passing current is smaller, so that the current is kept at a lower value when the bipolar forceps tip 31 does not reach the set width, and the damage to tissues caused by misoperation discharge is avoided.

As an example, the first and second resistive segments 624a, 624b may be formed of a material having a different resistance value, such as a resistive alloy or a resistive composite material.

Referring to fig. 4 to 15, in order to facilitate the installation of the structure, in some alternative embodiments, a connector 8 is fixed in the insulating housing 621, a first groove 81, a second groove 82 and a third groove 83 which are mutually communicated are formed in the connector 8 along the axial direction of the needle tube 3, the end of the first groove 81 facing the tube body 2 is abutted against the connecting rod assembly 4, a clamping groove 821 is formed in the second groove 82, a positioning block 33 and two passages 34 are fixed on the outer wall of the needle tube 3, the positioning block 33 is clamped in the clamping groove 821, and the two passages 34 are located in the third groove 83 and abutted against one end of the second groove 82 far away from the tube body 2.

As an example, the connector 8 may be inserted and fixed in the insulating housing 621, the needle cannula 3 is axially disposed in the first recess 81, the second recess 82 and the third recess 83, the first recess 81 penetrates through the outer wall of the insulating housing 621, the end portion of the needle cannula 3 extends out of the insulating housing 621 from the first recess 81, and the needle cannula 3 may extend out of the insulating housing 621 from the third recess 83.

Further, a sliding groove 811 is formed in the side wall of the first groove 81, the resistor 62 is slidably inserted into the sliding groove 811, two mounting grooves 812 are formed in the side wall of the first groove 81, the second conductive sheet 625 and the third conductive sheet 626 have the same structure and are inserted into the corresponding mounting grooves 812, a rack sliding groove 84 is formed in the outer wall of the connector 8, the end portion of the rack sliding groove 84 extends into the first groove 81, and the sliding rack 611 is slidably inserted into the rack sliding groove 84 and extends out of the first groove 81 to be fixedly connected with the resistor 62.

As an example, a through slot 8121 penetrating through the outer wall is formed in the mounting slot 812, a positioning slot 8122 is formed on the outer wall of the through slot 8121, the second conductive sheet 625 has a C-shaped bending portion, a first mounting hole 6251 is formed in the C-shaped bending portion, and a second mounting hole 6252 is formed in the second conductive sheet 625; during assembly, the second conducting strip 625 can be inserted from the through groove 8121 and extends into the mounting groove 812, and the second conducting strip 625 is fixed by screwing the bolt into the mounting hole II 6252; the C-shaped bending part is attached to the positioning groove 8122, is fixed through the first 6251 of the bolt screwing-in mounting hole, is convenient for integral assembly, has a relatively simple modified structure, and has lower manufacturing cost.

Referring to fig. 15, to increase the stability of the resistor 62 during movement, a damping module is further mounted on the resistor 62, and the damping module is in contact with the connector 8 and is used to increase the damping of the resistor 62 during sliding. The damping module comprises a damping spring plate 9, the damping spring plate 9 is fixed on the resistor 62, a plurality of damping grooves 813 are formed in the connector 8, and the damping spring plate 9 is inserted into the damping grooves 813.

As an example, the damping spring plate 9 is formed by bending a spring plate, and the damping spring plate 9 has a V-shaped bending part, and the V-shaped bending part is matched with the shape of the damping groove 813; when the resistor 62 slides, the pushing force is greater than the elastic force generated by the damping elastic sheet 9, the resistor 62 continues to displace until the resistor 62 is inserted into the next damping groove 813, and so on.

Specifically, according to the distance between the bipolar forceps tips 31, the current intensity of the bipolar forceps tips 31 is accurately controlled, so that the bipolar electrocoagulation has different electrocoagulation powers at different intervals, manual current control is replaced, the phenomenon that the power is too high to burn blood vessels and adhere with tissues is avoided because the current powers with different tissue thicknesses cannot be accurately controlled is avoided, the interval between the bipolar forceps tips 31 can be discharged within a certain range through the adjusting component, misoperation can be avoided, and the use safety is improved.

The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this invention will occur to those skilled in the art, and are intended to be within the spirit and scope of the invention.

Claims

1. The utility model provides a bipolar operation electrode, includes casing (1), body (2), needle tubing (3), connecting rod assembly (4) and tweezers handle (5), its characterized in that: the connecting rod assembly (4) is fixed in the shell (1), one end of the needle tube (3) is fixed in the shell (1), the other end of the needle tube (3) extends out of the shell (1) and is provided with an elastically-opened bipolar forceps tip (31), the forceps handle (5) is movably arranged outside the shell (1) and is used for driving the connecting rod assembly (4), the tube body (2) is in driving connection with the connecting rod assembly (4), the connecting rod assembly (4) is used for driving the tube body (2) to move along the axial direction of the needle tube (3) so that the tube body (2) drives the bipolar forceps tip (31) to open or clamp, an adjusting unit (6) is further arranged in the shell (1), the adjusting unit (6) is provided with an adjusting end (61) for moving along with the tube body (2), the adjusting end (61) is fixedly connected with the tube body (2), and after the tube body (2) drives the adjusting end (61) to move to a set position in the closing process of the bipolar forceps tip (31), the adjusting unit (6) controls the distance between the bipolar forceps tip and the bipolar forceps tip (31) to be in proportion to the current of the bipolar forceps tip (31) to the current;

the adjusting unit (6) comprises a resistor (62), the resistor (62) is arranged in the shell (1) in a sliding connection mode, the resistor (62) and the bipolar forceps tip (31) are electrically connected in series, the adjusting end (61) is arranged in the resistor (62) in a sliding mode along the axial direction of the tube body (2), and the resistor (62) changes the resistance of the resistor through the sliding of the adjusting end (61);

the adjusting unit (6) further comprises a control module fixed in the shell (1), wherein the control module is in driving connection with the resistor (62) and is used for controlling the relative position of the resistor (62) in the shell (1);

the control module comprises a supporting piece (63), the supporting piece (63) is fixed in a shell (1), a worm (64), a first shaft (65) and a second shaft (66) are fixedly rotated on the supporting piece (63), one end of the worm (64) penetrates through the supporting piece (63) and extends out of the shell (1), a circular arc worm wheel (67) is mounted at one end of the first shaft (65), the circular arc worm wheel (67) is meshed with the worm (64), a driving bevel gear (68) is mounted at the other end of the first shaft (65), a driven bevel gear (69) is mounted at one end of the second shaft (66), the driving bevel gear (68) is meshed with the driven bevel gear (69), a driving spur gear (610) is mounted at the other end of the second shaft (66), a sliding rack (611) is mounted on the shell (1) and is fixedly connected with a resistor (62), and the sliding rack (611) is meshed with the driving spur gear (610).

2. The bipolar surgical electrode of claim 1 wherein: the resistor (62) comprises an insulating shell (621), a resistor plate (622) is fixedly inserted into the insulating shell (621), a first conductive sheet (623) and a first resistor sheet (624) are fixedly arranged at one end of the resistor plate (622), two sliding contacts are arranged at the adjusting end (61), one sliding contact is slidingly inserted into the first conductive sheet (623), the other sliding contact is slidingly inserted into the first resistor sheet (624), the first conductive sheet (623) is electrically communicated with the first resistor sheet (624) through the adjusting end (61), a conductive bump (6231) which is electrically communicated with the first conductive sheet (623) is arranged at the other end of the resistor plate (622), a resistive bump (6241) which is electrically communicated with the first resistor sheet (624) is further arranged at the other end of the resistor plate (622), a second conductive sheet (625) and a third conductive sheet (626) are fixedly arranged on the shell (1), the conductive bumps (6231) are in contact with the second conductive sheet (625), and the third conductive bump (6241) is in contact with the first conductive sheet (626), and the third conductive bump (6241) is in series connection.

3. The bipolar surgical electrode of claim 2 wherein: the first resistor (624) comprises a first resistor (624 a) and a second resistor (624 b), and the resistivity of the first resistor (624 a) and the resistivity of the second resistor (624 b) have a certain difference.

4. A bipolar surgical electrode as in claim 3, wherein: the novel high-strength syringe is characterized in that a connector (8) is fixedly arranged in the insulating casing (621), a first groove (81), a second groove (82) and a third groove (83) which are communicated with each other are formed in the connector (8) along the axial direction of the needle tube (3), the end portion of the first groove (81) facing the tube body (2) is abutted against the connecting rod assembly (4), a clamping groove (821) is formed in the second groove (82), a positioning block (33) and two channels (34) are fixedly arranged on the outer wall of the needle tube (3), the positioning block (33) is clamped in the clamping groove (821), and the two channels (34) are located in the third groove (83) and abutted against one end, far away from the tube body (2), of the second groove (82).

5. The bipolar surgical electrode of claim 4 wherein: the side wall of first recess (81) is provided with sliding groove (811), resistor (62) slip grafting is in sliding groove (811), two mounting groove (812) have been seted up to the side wall of first recess (81), no. two conducting strips (625) are the same with the structure of No. three conducting strips (626) to all peg graft in corresponding mounting groove (812), rack runner (84) have been seted up on the outer wall of connector (8), the tip of rack runner (84) extends to in first recess (81), sliding rack (611) slip grafting is in rack runner (84) to extend first recess (81) and resistor (62) fixed connection.

6. The bipolar surgical electrode of claim 1 wherein: the resistor (62) is also provided with a damping module which is in conflict with the connector (8) and is used for increasing the damping when the resistor (62) slides.

7. The bipolar surgical electrode of claim 6 wherein: the damping module comprises a damping elastic sheet (9), the damping elastic sheet (9) is fixed on the resistor (62), a plurality of damping grooves (813) are formed in the connector (8), and the damping elastic sheet (9) is inserted into the damping grooves (813).