CN112754648A

CN112754648A - Laparoscopic cuttable and bendable bipolar coagulation forceps

Info

Publication number: CN112754648A
Application number: CN202110205441.5A
Authority: CN
Inventors: 马淑香; 王峰; 王佟
Original assignee: Henan Elikunsi Medical Technology Co ltd
Current assignee: Changzhou Chunxi Photoelectric Technology Co.,Ltd.; Henan Elikunsi Medical Technology Co ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-05-07

Abstract

The invention relates to the field of medical instruments, in particular to a pair of bipolar electrocoagulation pliers capable of being cut and bent under an endoscope, which comprises a fixed handle, a movable handle, an outer tube, a pliers head and an electric connector, wherein the outer tube is arranged on the fixed handle, the far end of the outer tube penetrates through the fixed handle, the pliers head is arranged through a bending assembly, a pliers head pushing piece is arranged in the outer tube, one end of the pliers head pushing piece is connected with the pliers head and the bending assembly in a sliding mode, the other end of the pliers head pushing piece extends out of the outer tube and is positioned in the fixed handle, the movable handle is connected with the fixed handle in a rotating mode, and the movable; the forceps head and the forceps head pushing piece are electrically connected to an electric connector, and the electric connector is located outside the fixed handle and used for being connected to a high-frequency electrotome main machine. The electric coagulation forceps has the advantages of reasonable structure arrangement, good electric coagulation effect, safe use and adjustable forceps head position, and is more beneficial to operation.

Description

Laparoscopic cuttable and bendable bipolar coagulation forceps

Technical Field

The invention relates to the field of medical equipment, in particular to a pair of bipolar coagulation forceps capable of being cut and bent under an endoscope.

Background

In the endoscopic surgery, an energy instrument is used for separating, grabbing and coagulating the broken end of the blood vessel, and the like, the ultrasonic knife is commonly used at present, but the ultrasonic knife has obvious defects: firstly, instruments which do not have the high-frequency bipolar coagulation principle are stable in the sealing effect on the broken end of the blood vessel, and secondary bleeding or blood seepage of a patient after operation is possibly caused; secondly, only blood vessels with the diameter of less than 1mm can be sealed, so that the use of the vascular clamp can not avoid increasing the operation cost of a patient. And thirdly, the heat penetration injury to the nerve tissue within 3mm of the radius of the tissue contact site cannot be avoided, and complications are easily caused. The high-frequency bipolar coagulation forceps can provide a more stable coagulation hemostasis effect in endoscopic surgery, ensure absolute safety to peripheral nerve tissues and reduce or even avoid the use of vascular clamps so as to reduce the cost burden of patients, for example, the disposable bipolar coagulation forceps KJ-SJ0105 of Hangzhou Kangji medical instruments GmbH, but the current domestic bipolar coagulation forceps for endoscopic surgery do not have the function of electrotomy tissues and only can be used for hemostasis by the coagulation forceps, so that the position of an ultrasonic knife in the endoscopic surgery cannot be effectively replaced, the product is designed to overcome the weakness, and the bipolar coagulation forceps have the function of effective electrotomy tissues so as to replace the ultrasonic knife, thereby bringing better surgery effect and lower cost burden to patients in the endoscopic surgery.

Disclosure of Invention

The invention aims to solve the problems and provides the cuttable and bendable bipolar coagulation forceps under an endoscope, which has the advantages of reasonable structure arrangement, good coagulation effect, safe use, adjustable forceps head position and more benefit for operation.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the bipolar electrocoagulation forceps capable of being cut and bent under the endoscope comprise a fixed handle, a movable handle, an outer tube, a forceps head and an electric connector, wherein the outer tube is arranged on the fixed handle, the far end of the outer tube penetrates through the fixed handle, the forceps head is arranged through a bending component, a forceps head pushing piece is arranged in the outer tube, one end of the forceps head pushing piece is connected with the forceps head and the bending component in a sliding mode, the other end of the forceps head pushing piece extends out of the outer tube and is located in the fixed handle, the movable handle is connected with the fixed handle in a rotating mode, and the movable handle is connected with the forceps;

the forceps head and the forceps head pushing piece are electrically connected to an electric connector, and the electric connector is located outside the fixed handle and used for being connected to a high-frequency electrotome main machine.

Furthermore, the binding clip comprises a second jaw and a first jaw hinged with the second jaw, a first sliding groove and a second sliding groove are respectively formed in the middle of the first jaw and the middle of the second jaw, a plurality of convex teeth are arranged at the first sliding groove of the first jaw, a ceramic insulating layer is fixedly arranged on the second jaw, a conducting layer is arranged on the ceramic insulating layer, a groove corresponding to the convex teeth is formed in the conducting layer, the conducting layer is connected with a metal wire, and an insulating isolation pipe is sleeved on the metal wire;

the tong head pushing piece comprises a metal sheet and an inner tube, one end of the metal sheet is positioned in sliding grooves of the first jaw and the second jaw, the metal sheet is in contact with the first jaw, the other end of the metal sheet is fixedly connected with the inner tube, the inner tube is connected with an electric connector, one end of the inner tube is provided with an insulating layer, a through hole is formed in the insulating layer, and the metal wire penetrates through the through hole of the inner tube and is connected to the electric connector;

the two sides of one end of the metal sheet are provided with push pieces, the two push pieces are respectively positioned on the outer sides of the two jaws, an insulating cushion layer is arranged on the end face, facing the second jaw, of the first jaw, and the height of the insulating cushion layer is lower than that of the convex teeth.

Furthermore, the outer sides of the first jaw and the second jaw are provided with guide grooves, the two guide grooves are respectively communicated with the first sliding groove and the second sliding groove, the two push pieces are respectively positioned in the two guide grooves, and the end part, facing the outer tube, of the guide groove of the first jaw is provided with an arc-shaped recess.

Furthermore, the bending assembly comprises an elastic sheet, a pull rod and an elastic connecting piece, the elastic connecting piece comprises a first elastic piece and a second elastic piece which are mutually buckled, the first elastic piece and the second elastic piece are divided into a bending section and a fixing section, through grooves are formed in the middle parts of the bending section and the fixing section and used for metal sheets to pass through, the metal wires are fixedly arranged in the through grooves of the first elastic piece in a penetrating mode, a plurality of arc-shaped plates are arranged on two sides of the bending section at intervals, the inner sides of the arc-shaped plates are fixedly connected with the elastic sheet, the elastic sheet penetrates through the fixing section and is connected with the pull rod, and the fixing section is sleeved in the outer pipe;

the pull rod is arranged in the inner tube in a penetrating mode, through grooves are formed in the two sides of the other end of the inner tube, the pull rod is provided with guide plates corresponding to the through grooves, the two guide plates are arranged in a staggered mode, limiting blocks protruding out of the inner tube are arranged at the two ends of the guide plates, a T-shaped ejector rod is further arranged between the two pull rods, a through hole used for a metal wire to penetrate through is formed in the T-shaped ejector rod, the T-shaped ejector rod is inserted into the inner tube, the two sides of the T-shaped ejector rod are respectively in contact.

Furthermore, the rotary driving assembly comprises two limiting rings, two limiting guide pillars, a bearing ring and a rotary handle, the two limiting rings are sleeved on the inner pipe and correspond to the two guide plates respectively, the limiting rings are located between the two limiting blocks of the guide plates, the two limiting guide pillars are arranged on the two sides of the limiting rings in a penetrating mode and are arranged along the axial direction of the limiting rings, the limiting guide pillars are rotatably connected with the fixed handle through clamping pieces, the outer ends of the two limiting rings are opposite threaded sections, the bearing ring is sleeved on the outer sides of the two limiting rings and is in threaded connection with the two limiting rings, the rotary handle is arranged on the outer side of the bearing ring, and the rotary handle stretches out of the fixed handle and is located on the outer side of the fixed handle.

Furthermore, a clamping groove for clamping the T-shaped ejector rod is formed in the fixed handle, two electrode lead connectors are arranged on two sides of the clamping groove respectively, one electrode lead connector is in contact with the inner pipe, the other electrode lead connector is in contact with the metal wire, and the two electrode lead connectors are connected to an electric connector.

Furthermore, a circuit switch is arranged between the electric connector and the two electrode lead connectors, and the circuit switch is arranged at the front end of the movable handle.

Furthermore, the movable handle is provided with a shifting fork at the hinged position with the fixed handle, the inner pipe is positioned at the fork opening end of the shifting fork, and the inner pipe is provided with retaining rings at two sides corresponding to the shifting fork.

Furthermore, the inner tube is sleeved with a limiting shell at the position corresponding to the two retainer rings, the limiting shell is connected with a fixed handle in a sliding mode, a spring is arranged between one end of the limiting shell and the fixed handle, an n-shaped blocking piece is arranged between the other end of the limiting shell of the fixed handle, the transverse section of the n-shaped blocking piece is rotationally connected with the fixed handle, one end of the transverse section of the n-shaped blocking piece penetrates through the outer side of the fixed handle to be provided with a rotary limiting handle, the vertical section of the n-shaped blocking piece faces towards the shifting fork or the limiting shell, a convex block is arranged at the end of the vertical section of the n-shaped blocking piece, grooves corresponding to the convex block are formed in the two ends of the rotary path corresponding.

Furthermore, an arc-shaped display board is arranged at the other end of the transverse section of the n-shaped blocking piece, two different colors are arranged on the arc-shaped display board, and a display through hole is formed in the position, corresponding to the arc-shaped display board, of the fixed handle.

Through the technical scheme, the invention has the beneficial effects that:

the electrocoagulation effect of the invention is good: the two electrode lead connectors are respectively connected with the inner tube and the metal wire, one electrode is formed by electrifying the first forceps holder through the inner tube and the metal sheet, the other electrode is formed by electrifying the conducting layer on the second forceps holder through the metal wire, the movable handle is rotated to drive the forceps head to push the piece to move forwards, so that the two forceps heads are closed, a closed loop is formed between the convex teeth on the first forceps head and the conducting layer, the tissue between the convex teeth and the conducting layer is electrocoagulated, the contact area between the convex teeth and the tissue is large, a strip-shaped electrocoagulation belt is formed, and the electrocoagulation effect is good.

The invention has convenient cutting: the movable handle is rotated to enable the shifting fork to push the retainer ring to move forward, so that the inner tube and the metal sheet are driven to move forward, the metal sheet slides in the chute of the forceps head, and the purpose of cutting the tissue after electrocoagulation is achieved; the metal sheet is provided with a push sheet, the end part of the abstract outer tube of the guide groove of the first clamp jaw is provided with an arc-shaped recess, and the push sheet drives the first clamp jaw to close or open when passing through the arc-shaped recess. The forceps head pushing piece is not only used as a connecting part of a circuit, but also used as a transmission part for the movement of the forceps head, and simultaneously achieves the function of cutting tissues.

The connection between the forceps head and the handle is provided with the flexible section and can be bent, the bending component can be driven to deflect and bend by rotating the rotary handle through the arrangement of the bending component and the rotary driving component, so that a bendable part exists in a path between the forceps head and the handle, the position of the forceps head can be adjusted, the position of the handle is less limited in the operation process, and the operation is facilitated.

Drawings

FIG. 1 is a schematic structural view of an endoscopic cuttable, bendable bipolar coagulation forceps of the present invention;

FIG. 2 is a schematic structural view of a second binding clip of the present invention;

FIG. 3 is a schematic sectional view of a first binding clip of the present invention;

FIG. 4 is a schematic structural view of the binding clip and the swerving assembly of the present invention;

FIG. 5 is a schematic view of the construction of the elastic connector of the present invention;

FIG. 6 is a schematic structural view of the present invention;

FIG. 7 is a schematic view of the connection structure of the end portion of the inner pipe of the present invention;

FIG. 8 is a schematic sectional view showing the connection structure of the end portion of the inner pipe of the present invention;

FIG. 9 is a schematic structural view of the T-shaped carrier rod of the present invention;

FIG. 10 is a cross-sectional view of the twist grip and adaptor ring of the present invention;

FIG. 11 is a schematic view of the rotary drive assembly of the present invention with the inner tube and stopper.

The reference numbers in the drawings are as follows: the clamp comprises a fixed handle 1, a movable handle 2, a shifting fork 201, an outer tube 3, a tong head 4, a first clamp 401, a convex tooth 4011, an insulating cushion 4012, a second clamp 402, a ceramic insulating layer 4021, a guide groove 403, a conductive layer 5, a metal wire 501, an insulating isolation tube 502, a tong head pushing piece 6, a metal sheet 601, a push sheet 6011, an inner tube 602, a retainer 6021, a bending component 11, a spring sheet 1101, a pull rod 1103, a T-shaped ejector rod 1104, an elastic connecting piece 1105, an antenna 1106, a limiting block 1107, an n-shaped blocking piece 1107, a lug 1301, an arc display plate 1302, a spring 15, a rotation driving component 18, a rotation handle 1801, a bearing ring 1802, a limiting ring 1803 and a limiting guide post 1804.

Detailed Description

The invention is further described with reference to the following figures and detailed description:

in the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", "lateral", "vertical", etc. indicate orientations or positional relationships based on those shown in fig. 1 only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 11, the present embodiment provides a pair of bipolar electrocoagulation pliers capable of being cut and bent under an endoscope, including a fixed handle 1, a movable handle 2, an outer tube 3, a forceps head 4 and an electrical connector, where the outer tube 3 is disposed on the fixed handle 1, a distal end of the outer tube 3 passes through the fixed handle 1, the forceps head 4 is disposed through a bending component 11, a forceps head pushing member 6 is disposed in the outer tube 3, one end of the forceps head pushing member 6 is slidably connected with the forceps head 4 and the bending component 11, the other end of the forceps head pushing member extends out of the outer tube 3 and is located in the fixed handle 1, the movable handle 2 is rotatably connected with the fixed handle 1, and the movable handle 2 is in transmission connection with the forceps head; the forceps head 4 and the forceps head pushing piece 6 are electrically connected to an electric connector which is located outside the fixed handle 1 and is used for being connected to a high-frequency electrotome main machine. After the electric coagulation forceps are connected with a high-frequency electrotome main machine and started, the forceps head pushing piece 6 and the forceps head 4 are respectively provided with a single pole electrode to form two corresponding poles, the movable handle 2 is rotated to drive the forceps head pushing piece 6 to move, so that the forceps head pushing piece 6 drives the forceps head 4 to clamp tissues to perform electric coagulation on the tissues, and when the position of the forceps head 4 needs to be adjusted, the position of the forceps head 4 is adjusted through the bending of the bending component 11.

Specifically, the forceps head 4 comprises a second forceps jaw 402 and a first forceps jaw 401 hinged to the second forceps jaw 402, a first sliding groove and a second sliding groove are formed in the middle of the first forceps jaw 401 and the middle of the second forceps jaw 402 respectively, the width of the second sliding groove is larger than that of the first sliding groove, a plurality of convex teeth 4011 are arranged on the first forceps jaw 401 at the first sliding groove, a ceramic insulating layer 4021 is fixedly arranged on the second forceps jaw 402, a conducting layer 5 is arranged on the ceramic insulating layer 4021, a groove corresponding to the convex teeth 4011 is formed in the conducting layer 5, the conducting layer 5 is connected with a metal wire 501, and an insulating isolation tube 502 is sleeved on the metal wire 501;

the tong-head pushing piece 6 comprises a metal sheet 601 and an inner tube 602, one end of the metal sheet 601 is positioned in the sliding grooves of the first jaw 401 and the second jaw 402, the part of the metal sheet 601 positioned in the first sliding groove is contacted with the first jaw 401 to enable the first jaw 401 to be electrified to form a positive or negative pole, the other end of the metal sheet 601 is fixedly connected with the inner tube 602, the inner tube 602 is positioned in the outer tube 2, the inner tube 602 is connected with an electric connector, the left end of the inner tube 602 is provided with an insulating layer, a through hole is formed in the insulating layer, the metal wire 501 penetrates through the through hole of the inner tube 602 to be connected with the electric connector, the metal wire 501 is sleeved on the part of the inner tube 602 with the insulating isolation tube 502, the insulating layer on the inner tube 602 and the insulating isolation tube 502 are used for isolating the current between the metal wire 501 and the inner tube 602, the electrode forms a, namely, the conducting layers 5 on the first forceps head 401 and the second forceps head 402 are respectively electrified to form electrodes, and a current loop is formed by closing the two forceps heads to achieve the electrocoagulation of the tissue between the two forceps heads;

both sides of one end of the metal sheet 601 are provided with push pieces 6011, the two push pieces 6011 are respectively located on the outer sides of the two jaws, an insulating cushion 4012 is arranged on the end face, facing the second jaw 402, of the first jaw 401, the height of the insulating cushion 4012 is lower than that of the convex teeth 4011, and therefore when the two jaws are closed, current only forms a current loop through the convex teeth 4011 and the conducting layer 5, and electrocoagulation is performed on tissues. The movement of the tong head pushing piece 6 drives the pushing piece 6011 to push the two tong heads, so that the two tong heads are closed.

Guide grooves 403 are formed in the outer sides of the first jaw 401 and the second jaw 402, the two guide grooves 403 are respectively communicated with the first sliding groove and the second sliding groove, the two push pieces 6011 are respectively located in the two guide grooves 403, and an arc-shaped recess is formed in the end portion, facing the outer tube 3, of the guide groove 403 of the first jaw 401. The push piece 6011 moves along the guide slot 403, and when the push piece passes through the arc-shaped recess at the end of the guide slot 403, the first tong head 401 is opened or closed.

Further, the turning assembly 11 includes a striking plate 1101, a pulling rod 1103 and an elastic connector 1105. The elastic connecting piece 1105 comprises a first elastic piece and a second elastic piece which are buckled with each other, the first elastic piece and the second elastic piece are divided into a bending section and a fixing section, through grooves are formed in the middle parts of the bending section and the fixing section, the through grooves are used for the metal sheet 601 to pass through, the metal wire 501 is fixedly penetrated in the through grooves of the first elastic piece, a plurality of arc-shaped plates are arranged on two sides of the bending section at intervals, elastic pieces 1101 are fixedly connected to the inner sides of the arc-shaped plates, connecting contact angles 1106 are arranged on the arc-shaped plates of the first elastic piece, the connecting contact angles 1106 are columnar connecting contact angles 1106, grooves are arranged on the arc-shaped plates of the second elastic piece corresponding to the connecting contact angles, the two elastic pieces are connected with each other through the connecting contact angles 1106 and the grooves in a buckling mode, the elastic pieces 1101 pass through the fixing section to be connected with the pull;

the pull rod 1103 is arranged in the inner pipe 602 in a penetrating mode, a through groove is formed in the right end of the inner pipe 602, guide plates are arranged on the pull rod 1103 corresponding to the through groove, the two guide plates are arranged in a staggered mode, limiting blocks 1107 protruding out of the inner pipe 602 are arranged at two ends of each guide plate, a T-shaped ejector rod 1104 is further arranged between the two pull rods 1103, a through hole used for the metal wire 501 to penetrate through is formed in the T-shaped ejector rod 1104, the T-shaped ejector rod 1104 is inserted into the inner pipe 602, two sides of the T-shaped ejector rod 1104 are respectively in contact with the two pull rods 1103, the T-shaped ejector rod 1104 is. The pulling of the rotary driving assembly 18 to the pulling rod 1103 drives the shrapnel 1101 to bend and tension, and then drives the elastic connecting piece 1105 to bend, thereby realizing the adjustment of the position of the pincer head 4.

Further, the rotary driving assembly 18 includes a limit ring 1803, a limit guide post 1804, a receiving ring 1802 and a rotary handle 1801, the number of the limiting rings 1803 is two, two limiting rings 1803 are sleeved on the inner tube 602, the two limiting rings 1803 are respectively corresponding to the two guide plates, the limiting rings 1803 are located between the two limiting blocks 1107 of the guide plates, two limiting guide posts 1804 are respectively arranged on both sides of the limiting rings 1803 in a penetrating manner, the two limiting guide posts 1804 are arranged along the axial direction of the limiting rings 1803, the limiting guide post 1804 is rotatably connected with the fixed handle through a clamping piece, the outer ends of the two limiting rings 1803 are opposite thread sections, the bearing ring 1802 is sleeved on the outer sides of the two limiting rings 1803, the receiving ring 1802 is in threaded connection with two limiting rings 1803, the rotating handle 1801 is arranged on the outer side of the receiving ring 1802, and the rotating handle 1801 extends out of the fixing handle 1 and is located on the outer side of the fixing handle 1. Thereby drive the ring 1802 that bears and rotate through rotating twist grip 1801, under the effect of spacing guide pillar 1804, two spacing rings 1803 can only lateral sliding and slip opposite direction, thereby spacing ring 1803's sideslip drives stopper 1107 and pull rod 1103 sideslip, the removal of pull rod 1103 drives shell fragment 1101 crooked, because the sideslip opposite direction of two pull rods 1103, thereby make two shell fragments 1101 can drive elastic connection spare 1105 crooked towards the shell fragment 1101 direction of tensioning wherein, thereby realize driving the removal of binding clip position, adjust the binding clip position.

Further, a shifting fork 201 is arranged at the hinged position of the movable handle 2 and the fixed handle 1, the inner pipe 602 is located at the fork opening end of the shifting fork 201, and the inner pipe 602 is provided with retaining rings 6021 on two sides corresponding to the shifting fork 201. The shifting fork 201 is driven to rotate by rotating the movable handle 2, the retaining ring 6021 is driven to move back and forth, the inner tube 602 is driven to move back and forth, the first tong head 401 is opened or closed by the tong head pushing piece 6, and meanwhile, the convex teeth 4011 of the first tong head 401 are electrified to form an electrode through the inner tube 602 and the metal sheet 601.

In order to ensure that the electrocoagulation pliers are safer and more reliable to use, the inner tube 602 is sleeved with a limiting shell 12 at the position corresponding to the two retainer rings 6021, the limiting shell 12 is slidably connected with the fixed handle 1, a spring 15 is arranged between one end of the limiting shell 12 and the fixed handle 1, the fixed handle 1 is provided with an n-shaped stopper 13 between the other end of the limiting shell 12, the transverse section of the n-shaped stopper 13 is rotatably connected with the fixed handle 1, one end of the transverse section of the n-shaped stopper 13 penetrates through the outer side of the fixed handle 1 to be provided with a rotary limiting handle, the vertical section of the n-shaped stopper 13 faces the shifting fork 201 or the limiting shell 12, the end part of the vertical section of the n-shaped stopper 13 is provided with a bump 1301, the fixed handle 1 is provided with grooves corresponding to the bump 1301 at the two ends of the rotary path corresponding to. The other end of the transverse section of the n-shaped stopper 13 is provided with an arc display panel 1302, the arc display panel 1302 is provided with two different colors, and the fixed handle 1 is provided with a display through hole at the position corresponding to the arc display panel 1302. By rotating the n-shaped stop 13 so that the end thereof blocks the retainer 6021, it is possible to prevent and observe whether the n-shaped stop 13 blocks the position through the display through hole.

The fixing handle 1 is provided with a clamping groove for clamping the T-shaped ejector rod 1104, two sides of the clamping groove are respectively provided with two electrode lead connectors, one electrode lead connector is in contact with the inner pipe 602, the other electrode lead connector is in contact with the metal wire 501, and the two electrode lead connectors are connected to an electric connector. A circuit switch is arranged between the electric connector and the two electrode lead connectors and is arranged at the front end of the movable handle 2.

When the device is used, the electric connector is connected to a high-frequency electrotome main machine, the rotary switch handle is rotated anticlockwise to drive the n-shaped stopper 13 to rotate anticlockwise, and therefore the limit of the end part of the n-shaped stopper 13 on the retainer ring 6021 and the limit of the end part of the inner tube 602 are released; the movable handle 2 can be rotated to enable the shifting fork 201 to push the retainer ring 6021 to advance, so that the inner tube 602 is driven to advance, the metal sheet 601 is driven to advance, and the push sheet 6011 is driven to close the first tong head 401 towards the second tong head 402; the electrocoagulation pliers are electrified by pressing a circuit switch at the front end of the movable handle 2, so that one electrode lead connector enables the convex teeth 4011 of the first jaw 401 to be electrified through the inner tube 602 and the metal sheet 601 to form an electrode, the other electrode lead connector enables the conductive layer 5 to be electrified through the metal wire 501 to form an electrode, along with the closing of the pliers heads, the convex teeth 4011 of the first pliers head 401, the conductive layer 5 and tissues between the conductive layer 5 form a closed loop to electrify the tissues for electrocoagulation, and after the electrocoagulation is finished, the pressing of the circuit switch at the front end of the movable handle 2 is released, and the circuit is closed; continuing to rotate the movable handle 2 to push the metal sheet 601 to advance, so that the metal sheet 601 cuts the tissue subjected to electrocoagulation; then the movable handle 2 is loosened, under the action of the spring 15, the limit shell 12 returns to the original position, and simultaneously drives the retainer ring 6021, the inner tube 602 and the metal sheet 601 to reset, and in the resetting process of the metal sheet 601, the push sheet 6011 moves along the guide groove 403 to the arc-shaped recess of the first tong head 401 and then opens along with the first tong head 401. When the position of the forceps head needs to be adjusted, the elastic connecting piece 1105 is driven to bend by rotating the rotating handle 1801, so that the position of the forceps head is adjusted, a route from a handheld position to the position of the forceps head is changed, the route has a certain curvature, and the operation is facilitated.

The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.

Claims

1. The pair of bipolar electrocoagulation pliers capable of being cut and bent under the endoscope is characterized by comprising a fixed handle (1), a movable handle (2), an outer tube (3), a tong head (4) and an electric connector, wherein the outer tube (3) is arranged on the fixed handle (1), the far end of the outer tube (3) penetrates through the fixed handle (1), the tong head (4) is arranged through a bending component (11), a tong head pushing piece (6) is arranged in the outer tube (3), one end of the tong head pushing piece (6) is connected with the tong head (4) and the bending component (11) in a sliding mode, the other end of the tong head pushing piece extends out of the outer tube (3) and is located in the fixed handle (1), the movable handle (2) is connected with the fixed handle (1) in a rotating mode, and the movable handle (2) is connected with the tong head pushing piece (;

the forceps head (4) and the forceps head pushing piece (6) are electrically connected to an electric connector, and the electric connector is located outside the fixed handle (1) and used for being connected to a high-frequency electrotome main machine.

2. The laparoscopic cuttable, bendable bipolar coagulation forceps according to claim 1,

the forceps head (4) comprises a second forceps jaw (402) and a first forceps jaw (401) hinged to the second forceps jaw (402), a first sliding groove and a second sliding groove are formed in the middle of the first forceps jaw (401) and the middle of the second forceps jaw (402) respectively, a plurality of convex teeth (4011) are arranged on the first forceps jaw (401) at the first sliding groove, a ceramic insulating layer (4021) is fixedly arranged on the second forceps jaw (402), a conductive layer (5) is arranged on the ceramic insulating layer (4021), grooves corresponding to the convex teeth (4011) are formed in the conductive layer (5), the conductive layer (5) is connected with a metal wire (501), and an insulating isolation pipe (502) is sleeved on the metal wire (501);

the tong head pushing piece (6) comprises a metal sheet (601) and an inner tube (602), one end of the metal sheet (601) is located in sliding grooves of a first jaw (401) and a second jaw (402), the metal sheet (601) is in contact with the first jaw (401), the other end of the metal sheet (601) is fixedly connected with the inner tube (602), the inner tube (602) is connected to an electric connector, an insulating layer is arranged at one end of the inner tube (602), a through hole is formed in the insulating layer, and the metal wire (501) penetrates through the through hole of the inner tube (602) to be connected to the electric connector;

both sides of sheetmetal (601) one end all are provided with push jack (6011), two push jack (6011) are located the outside of two pincers clamps respectively, first pincers clamp (401) are provided with insulating bed course (4012) on the terminal surface towards second pincers clamp (402), the height of insulating bed course (4012) is less than dogtooth (4011).

3. The laparoscopic cuttable and bendable bipolar electrocoagulation clamp according to claim 2, wherein the outer sides of the first jaw (401) and the second jaw (402) are provided with guide grooves (403), the two guide grooves (403) are respectively communicated with the first sliding groove and the second sliding groove, the two push plates (6011) are respectively positioned in the two guide grooves (403), and the end of the guide groove (403) of the first jaw (401) facing the outer tube (3) is provided with an arc-shaped recess.

4. The laparoscopic cuttable, bendable bipolar coagulation forceps according to claim 2, wherein the bending assembly (11) comprises a shrapnel (1101), a pulling rod (1103) and an elastic connection (1105),

the elastic connecting piece (1105) comprises a first elastic piece and a second elastic piece which are buckled with each other, the first elastic piece and the second elastic piece are divided into a bending section and a fixing section, through grooves are formed in the middle parts of the bending section and the fixing section, the through grooves are used for a metal sheet (601) to pass through, the metal wire (501) is fixedly arranged in the through grooves of the first elastic piece in a penetrating mode, a plurality of arc-shaped plates are arranged on two sides of the bending section at intervals, elastic sheets (1101) are fixedly connected to the inner sides of the arc-shaped plates, the elastic sheets (1101) pass through the fixing section to be connected with a pull rod (1103), and the fixing section is sleeved in the outer pipe (3;

inner tube (602) is worn to locate in pull rod (1103), and logical groove has all been seted up to the both sides of the other end of inner tube (602), pull rod (1103) correspond to lead to the groove and are provided with the deflector, two deflector dislocation sets, the both ends of deflector are provided with stopper (1107) outstanding in inner tube (602), still are provided with T shape ejector pin (1104) between two pull rod (1103), set up the through-hole that is used for wire (501) to pass on T shape ejector pin (1104), T shape ejector pin (1104) insert in inner tube (602), both sides contact with two pull rod (1103) respectively, the cover is equipped with rotation driving subassembly (18) on stopper (1107).

5. The pair of laparoscopic cuttable and bendable bipolar electrocoagulation pliers according to claim 4, wherein the rotary driving assembly (18) comprises two limiting rings (1803), two limiting guide pillars (1804), two receiving rings (1802) and a rotary handle (1801), the two limiting rings (1803) are sleeved on the inner tube (602), the two limiting rings (1803) are respectively corresponding to the two guide plates, the limiting rings (1803) are located between the two limiting blocks (1107) of the guide plates, the two limiting guide pillars (1804) are respectively arranged on two sides of the limiting rings (1803) in a penetrating manner, the two limiting guide pillars (1804) are arranged along the axial direction of the limiting rings (1803), the limiting guide pillars (1804) are rotatably connected with the fixed handle through clamping pieces, the outer ends of the two limiting rings (1803) are opposite threaded sections, the receiving rings (1802) are sleeved on the outer sides of the two limiting rings (1804), the bearing ring (1802) is in threaded connection with the two limit rings (1803), the rotating handle (1801) is arranged on the outer side of the bearing ring (1802), and the rotating handle (1801) stretches out of the fixed handle (1) and is located on the outer side of the fixed handle (1).

6. The pair of laparoscopic cuttable and bendable bipolar electrocoagulation pliers according to claim 4, wherein the fixing handle (1) is provided with a clamping groove for clamping the T-shaped mandril (1104), two sides of the clamping groove are respectively provided with two electrode lead connectors, one electrode lead connector is in contact with the inner tube (602), the other electrode lead connector is in contact with the metal wire (501), and the two electrode lead connectors are connected to an electric connector.

7. Endoscopic cuttable and bendable bipolar coagulation forceps according to claim 6, characterized in that a circuit switch is arranged between the electric connector and the two electrode wire connectors, the circuit switch being arranged at the front end of the movable handle (2).

8. The laparoscopic cuttable and bendable bipolar electrocoagulation clamp according to claim 2, wherein a shifting fork (201) is arranged at the hinged position of the movable handle (2) and the fixed handle (1), the inner pipe (602) is positioned at the fork opening end of the shifting fork (201), and the inner pipe (602) is provided with retaining rings (6021) at two sides corresponding to the shifting fork (201).

9. The pair of laparoscopic cuttable and bendable bipolar electrocoagulation pliers according to claim 8, wherein the inner tube (602) is sleeved with a limiting shell (12) at a position corresponding to the two retainer rings (6021), the limiting shell (12) is slidably connected with the fixed handle (1), a spring (15) is arranged between one end of the limiting shell (12) and the fixed handle (1), an n-shaped stopper (13) is arranged between the other end of the limiting shell (12) of the fixed handle (1), a transverse section of the n-shaped stopper (13) is rotatably connected with the fixed handle (1), one end of the transverse section of the n-shaped stopper (13) penetrates through the outer side of the fixed handle (1) to be provided with a rotary limiting handle, a vertical section of the n-shaped stopper (13) faces the shifting fork (201) or the limiting shell (12), a projection (1301) is arranged at the end of the vertical section of the n-shaped stopper (13), grooves corresponding to the projection (1301) are formed at two ends of a rotary path of the n-shaped stopper (13) on the fixed, one of the grooves is located at the other end of the limit shell (12).

10. The endoscopic cuttable and bendable bipolar electrocoagulation pliers according to claim 9, wherein the other end of the transverse section of the n-shaped stopper (13) is provided with an arc display board (1302), the arc display board (1302) is provided with two different colors, and the fixing handle (1) is provided with a display through hole at the position corresponding to the arc display board (1302).