Intracavitary surgical instrument and electrocoagulation surgical instrument

Abstract

Embodiments of the present invention disclose an intracavitary surgical instrument and an electrocoagulation surgical instrument. The intracavitary surgical instrument is configured as a detachable operation assembly and a driving assembly, and the electrocoagulation surgical instrument is configured as a detachable electrocoagulation assembly and a driving assembly, thereby making full use of multiple incisions in a laparoscopic surgery, so that the operation assembly or the electrocoagulation assembly and a rod member can be separately inserted into a cavity from incisions at different positions, reducing the size of the incision corresponding to the rod member and improving the recovery speed of a patient after surgery. In another aspect, during assembly of the electrocoagulation surgical instrument or the intracavitary surgical instrument, a pulling part can pull the electrocoagulation assembly or the operation assembly and the driving assembly to move toward each other, so as to facilitate the assembly of the two. At the same time, the pulling part can further cause, by means of a pulling action, a first operation arm and a second operation arm to approach each other, so as to implement an electrocoagulation operation of the first operation arm and the second operation arm on biological tissue, thereby simplifying the actions of a surgical operation.

Description

Endovascular surgical instruments and electrocoagulation surgical instruments

[0001] This application claims priority to the Chinese patent application filed on August 31, 2023, with application number 202311125526.8 and invention name “Electrocoagulation Surgical Instrument”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the field of medical surgical instruments, and in particular to an intracavitary surgical instrument and an electrocoagulation surgical instrument. Background Art

[0003] During laparoscopic surgery, multiple incisions are made in the body to facilitate the coordinated use of instruments such as the endoscope, scalpel, and forceps. For example, an incision on one side allows the forceps to maneuver the tissue within the cavity, exposing the lesion. This allows the scalpel to access the incision on the other side.

[0004] In order to insert intracavitary surgical instruments into the human body, if a separate incision is made, it will further increase the patient's pain and slow down the healing process. At the same time, it will also make the space in the cavity more cramped during surgery. How to reduce the number and size of incisions during intracavitary surgery has become a problem that needs to be solved.

[0005] Summary of the Invention

[0006] In view of this, an embodiment of the present invention provides an intracavitary surgical instrument and an electrocoagulation surgical instrument, which utilizes an electrocoagulation component and a driving component that can be detached from each other, or an operating component and a driving component that can be detached from each other, to reduce the size of the wound on the insertion side of the driving component and accelerate the healing speed of the wound.

[0007] According to a first aspect of an embodiment of the present invention, there is provided an intracavitary surgical instrument, comprising:

[0008] A drive assembly includes a connecting portion, the connecting portion includes a hollow rod, the rod includes a connecting end, the connecting end includes an abutting annular surface and a plug connector, the plug connector is protruded from the abutting annular surface; and

[0009] An operating assembly includes a sheath portion and a moving portion, wherein the sheath portion has a mating end surface and a first accommodating hole, wherein the first accommodating hole is a through hole, and the moving portion includes a pulling portion, a first operating arm and a second operating arm, wherein the second operating arm is provided on the sheath portion;

[0010] The pulling portion is configured to be connected to the first operating arm at one end and to operably pass through the rod at the other end, and to pull the sheath portion toward the rod until the plug connector is detachably inserted into the first accommodating hole and the abutting annular surface abuts against the mating end surface. The pulling portion is used to drive the first operating arm close to the second operating arm.

[0011] Furthermore, the pulling portion includes a pulling wire, the pulling wire includes a connecting section and a fixing section, and the connecting section is close to the first operating arm;

[0012] The driving assembly further includes a fixing portion, which is disposed on a side of the connecting portion away from the operating assembly and defines a first hole;

[0013] The fixing section passes through the rod into the first hole and is fixedly connected to the fixing portion. The fixing portion can be operably moved close to or away from the connecting portion to drive the first operating arm to move relative to the second operating arm.

[0014] Furthermore, the first channel is a through hole;

[0015] The pull line also includes a pull section;

[0016] The drive assembly further includes a body;

[0017] One end of the connecting portion away from the connecting end is connected to the body;

[0018] The intracavitary surgical instrument has a spliced ​​state, in which the pulling section extends from one end of the first channel away from the connecting section, and pulls the sheath to splice with the connecting end, and the fixing section is located in the first channel.

[0019] Furthermore, the rod is provided with a second hole, and the second hole is a through hole;

[0020] The main body is provided with a first slide, and the fixing part is slidably arranged on the first slide. The fixing part has a first position and a second position in the first slide. In the first position, the fixing part is located at one end of the first slide close to the sheath and the first channel and the second channel extend along the same axis. In the second position, the fixing part is located at one end of the first slide away from the sheath, and the first operating arm approaches the second operating arm and maintains a predetermined distance.

[0021] Furthermore, the axial direction of the first slideway is parallel to the first channel and the second channel.

[0022] Further, the first channel and the ports on the opposite side of the second channel have a predetermined distance;

[0023] The fixing portion is provided with a guide cone surface, and the small-diameter end of the guide cone surface is connected to the port of the first channel close to the second channel.

[0024] Furthermore, the pull wire is flexible;

[0025] The body has a fourth hole and a receiving cavity, the pull wire is operably passed through the fourth hole and the first slideway, the receiving cavity is located between the fourth hole and the first slideway, the fixing portion moves toward the sheath portion, and the area of ​​the receiving cavity located between the fourth hole and the fixing portion forms an escape space;

[0026] The pulling wire extends into the accommodating cavity, and the end of the pulling wire is placed on the guiding conical surface and slides from the guiding conical surface to the first channel.

[0027] Furthermore, the fixing portion further includes:

[0028] Positioning parts;

[0029] fixing screws; and

[0030] The base is provided with the first hole and a side hole, the side hole is connected to the first hole and faces the side of the first hole, the side hole has a threaded section and a sliding section in the axial direction, the sliding section is adjacent to the first hole, and the positioning member is slidably disposed on the sliding section;

[0031] The fixing screw is configured to penetrate the threaded section and push the positioning member to move into the first channel to fix the fixing section.

[0032] Furthermore, the body is provided with a window, the window passing through a side wall of one side of the first slideway and having a length direction parallel to the axial direction of the first slideway;

[0033] The head of the fixing screw extends out of the window. In the first position and the second position, the fixing screw moves to the edge position of the window in the length direction respectively.

[0034] Furthermore, the positioning member includes a plurality of connecting handles and a sliding body adapted to the sliding section, and the plurality of connecting handles are protrudingly provided on a side of the sliding body away from the fixing screw;

[0035] The fixing portion further includes:

[0036] a plurality of first elastic members; and

[0037] A plurality of first positioning holes are formed at the bottom of the side hole, the plurality of first positioning holes are arranged on both sides of the first channel, and the plurality of first elastic members are respectively arranged in the plurality of first positioning holes;

[0038] The fixing screw is screwed into the threaded section, and the tail of the fixing screw pushes the sliding body close to the first channel to clamp the fixing section, and the multiple connecting handles are correspondingly arranged in the multiple first positioning holes and abut against the multiple first elastic members.

[0039] Furthermore, the fixing screw is screwed out from the threaded section, and the first elastic member lifts up the positioning member.

[0040] Furthermore, the first slideway has a tail port, and the tail port is located on a side of the first slideway away from the sheath;

[0041] The driving assembly further includes a blocking member, the blocking member includes a limiting protrusion, and the limiting protrusion is provided with a third channel;

[0042] The fixing section is located in the first channel, and the pulling section extends to the outside of the body through the tail port;

[0043] The blocking member blocks the tail port, the third channel and the first channel extend along the same axis, and at least a portion of the pulling section is telescopically disposed in the third channel;

[0044] In the second position, the limiting protrusion abuts against the fixing portion.

[0045] Furthermore, the intracavitary surgical instrument further comprises:

[0046] puncture needle; and

[0047] The sleeve hose is a hollow structure and includes a head, a tail, and a middle area between the head and the tail;

[0048] The sleeve hose passes through the puncture needle, and the puncture needle is located between the middle area and the tail. The head is used to sleeve the pull wire, and the tail is used to drive the pull wire to pass through the puncture needle.

[0049] Furthermore, the pulling portion further includes a moving head, and the moving head is connected to the connecting section and the tail of the first operating arm;

[0050] The sheath portion includes a second elastic member, a second slideway, and a stop ring surface, wherein the stop ring surface is located between the second slideway and the first accommodating hole, the moving head is slidably disposed in the second slideway, and the second elastic member abuts between the moving head and the stop ring surface;

[0051] When the pulling portion is in a free state, the second elastic member pushes the first operating arm away from the second operating arm;

[0052] In the assembled state, at least a portion of the connecting end is inserted into the first accommodating hole.

[0053] Furthermore, the plug connector is a puncture head, and the puncture head is convexly arranged in the central area of ​​the abutment annular surface;

[0054] The sheath also includes:

[0055] an elastic sleeve disposed on the second slideway, wherein the second elastic member abuts against the stop ring surface through the elastic sleeve, the elastic sleeve defines a tapered hole, the small-diameter end of the tapered hole is away from the stop ring surface, and the inner diameter of at least a portion of the tapered hole is smaller than the outer diameter of the plug connector;

[0056] In the assembled state, the piercing head is simultaneously inserted into the first accommodating hole and the tapered hole until the abutting annular surface abuts against the matching end surface.

[0057] Furthermore, the operating assembly further comprises a connecting sleeve, the connecting sleeve comprising a plurality of positioning springs, the plurality of positioning springs having an elastic bending amount toward the outside of the connecting sleeve;

[0058] The connecting sleeve is arranged in the first accommodating hole, the plug connector is inserted into the connecting sleeve, and a plurality of positioning springs abut against the side of the plug connector.

[0059] Furthermore, the rod includes a first extension section and a second extension section in the length direction, the diameter of the first extension section is less than 3 mm, and the diameter of the first extension section is smaller than the diameter of the second extension section.

[0060] In a second aspect, an embodiment of the present invention further provides an electrocoagulation surgical instrument, the electrocoagulation surgical instrument comprising:

[0061] A drive assembly includes a connecting portion, the connecting portion including a hollow rod, the rod including a connecting end; and

[0062] An electrocoagulation assembly includes a sheath portion and a moving portion, wherein the moving portion includes a pulling portion and a first operating arm and a second operating arm arranged in a pair, wherein the second operating arm is arranged on the sheath portion;

[0063] The pulling portion is configured to have one end connected to the first operating arm and the pulling portion and the first operating arm form a first electrical path, and the other end can be operably passed through the rod and pull the sheath portion toward the rod until the connecting end is detachably connected to the sheath portion, so that the rod, the sheath portion and the second operating arm form a second electrical path, and the pulling portion is used to drive the first operating arm close to the second operating arm so that the first electrical path is connected to the second electrical path through biological tissue.

[0064] Furthermore, the pulling portion includes a pulling wire, the pulling wire includes a connecting section and a fixing section, and the connecting section is close to the first operating arm;

[0065] The driving assembly further comprises a fixing portion, which is arranged on a side of the connecting portion away from the electrocoagulation assembly and defines a first channel;

[0066] The fixing section passes through the rod into the first hole and is fixedly connected to the fixing portion. The fixing portion can be operably moved close to or away from the connecting portion to drive the first operating arm to move relative to the second operating arm.

[0067] Furthermore, the first channel is a through hole;

[0068] The pull line also includes a pull section;

[0069] The drive assembly further includes a body;

[0070] One end of the connecting portion away from the connecting end is connected to the body;

[0071] The electrocoagulation surgical instrument has a spliced ​​state, in which the pulling section extends from one end of the first channel away from the connecting section, and pulls the sheath to splice with the connecting end, and the fixing section is located in the first channel.

[0072] Furthermore, the rod is provided with a second hole, and the second hole is a through hole;

[0073] The main body is provided with a first slide, and the fixing part is slidably arranged on the first slide. The fixing part has a first position and a second position in the first slide. In the first position, the fixing part is located at one end of the first slide close to the sheath and the first channel and the second channel extend along the same axis. In the second position, the fixing part is located at one end of the first slide away from the sheath, and the first operating arm approaches the second operating arm and maintains a predetermined distance.

[0074] Further, the first channel and the ports on the opposite side of the second channel have a predetermined distance;

[0075] The fixing portion is provided with a guide cone surface, and the small-diameter end of the guide cone surface is connected to the port of the first channel close to the second channel.

[0076] Furthermore, the fixing portion further includes:

[0077] Positioning parts;

[0078] fixing screws; and

[0079] The base is provided with the first hole and a side hole, the side hole is connected to the first hole and faces the side of the first hole, the side hole has a threaded section and a sliding section in the axial direction, the sliding section is adjacent to the first hole, and the positioning member is slidably disposed on the sliding section;

[0080] The fixing screw is configured to penetrate the threaded section and push the positioning member to move into the first channel to fix the fixing section.

[0081] Furthermore, the body is provided with a window, the window passing through a side wall of one side of the first slideway and having a length direction parallel to the axial direction of the first slideway;

[0082] The head of the fixing screw extends out of the window. In the first position and the second position, the fixing screw moves to the edge position of the window in the length direction respectively.

[0083] Furthermore, the base and the fixing screw are insulating parts;

[0084] The positioning member includes a plurality of connecting handles and a sliding body adapted to the sliding section, wherein the plurality of connecting handles are protrudingly provided on a side of the sliding body away from the fixing screw;

[0085] The fixing portion further includes:

[0086] a plurality of elastic members; and

[0087] a first electrical contact, disposed on the base and comprising an electrical contact surface, wherein the electrical contact surface is protruded in the first hole;

[0088] A plurality of first positioning holes are formed at the bottom of the side hole, the plurality of first positioning holes are arranged on both sides of the first channel, and the plurality of elastic members are respectively arranged in the plurality of first positioning holes;

[0089] The fixing screw is screwed into the threaded section, and the tail of the fixing screw pushes the sliding body close to the electrical contact surface to clamp the fixed section, and the first electrical contact is electrically connected to the fixed section. At the same time, the multiple connecting handles are correspondingly arranged in the multiple first positioning holes and abut against the multiple elastic members.

[0090] Furthermore, the first slideway has a tail port, and the tail port is located on a side of the first slideway away from the sheath;

[0091] The driving assembly further includes a blocking member, which is an insulating member and includes a limiting protrusion, and the limiting protrusion is provided with a third channel;

[0092] The fixing section is located in the first channel, and the pulling section extends to the outside of the body through the tail port;

[0093] The blocking member blocks the tail port, the third channel and the first channel extend along the same axis, and at least a portion of the pulling section is telescopically disposed in the third channel;

[0094] In the second position, the limiting protrusion abuts against the fixing portion.

[0095] Furthermore, the connecting portion includes a first connecting head, which is provided at an end of the rod away from the connecting end;

[0096] The body comprises:

[0097] The accommodating portion is provided with the first slideway; and

[0098] a second connector, protruding from one side of the accommodating portion and defining a fourth hole, the fourth hole being in communication with the first slideway;

[0099] The driving assembly further includes a first wire;

[0100] The first connector and the second connector are in a connected state, the fourth channel and the first channel extend along the same axis, and one end of the first wire is electrically connected to the first connector and the other end extends to the outside of the body.

[0101] Furthermore, the driving assembly further includes:

[0102] The second electrical contact has a central through hole;

[0103] The second connector defines a fifth channel, the fifth channel being connected to the first slide channel;

[0104] The first connector and the second connector are arranged in a pair and are in a connected state, the second electrical contact abuts between the end face of the rod and the second connector, and the central through hole is aligned with the first channel and the fourth channel, and the first wire passes through the first slide channel and the fifth channel and is connected to the second electrical contact.

[0105] Furthermore, the pulling portion further includes a moving head, and the moving head is connected to the connecting section and the tail of the first operating arm;

[0106] The sheath portion includes an elastic member, a second slideway, a stop ring surface, and a first accommodating hole, wherein the first accommodating hole is a through hole, the stop ring surface is located between the second slideway and the first accommodating hole, the moving head is slidably disposed in the second slideway, and the elastic member abuts between the moving head and the stop ring surface;

[0107] When the pulling portion is in a free state, the elastic member pushes the first operating arm away from the second operating arm;

[0108] In the assembled state, at least a portion of the connecting end is inserted into the first accommodating hole.

[0109] Furthermore, the connecting end includes an abutting annular surface and a puncture head, and the puncture head is protruding from the central area of ​​the abutting annular surface;

[0110] The sheath also includes:

[0111] an elastic sleeve disposed on the second slideway, wherein the elastic member abuts against the stop ring surface through the elastic sleeve, the elastic sleeve defines a tapered hole, the small-diameter end of the tapered hole is away from the stop ring surface, and the inner diameter of at least a portion of the tapered hole is smaller than the outer diameter of the puncture head;

[0112] In the assembled state, the puncture head is simultaneously inserted into the first accommodating hole and the tapered hole until the abutting annular surface abuts against the sheath portion.

[0113] Furthermore, the rod is a conductive member and includes a transition section and an opposite end, wherein the transition section is located between the connecting end and the opposite end;

[0114] The connecting portion further includes a first insulating coating layer, the first insulating coating layer coating the transition section, and the connecting end is exposed outside the first insulating coating layer;

[0115] The sheath portion further includes a conductor and a second insulating coating covering a portion of an outer area of ​​the conductor, the second operating arm is provided on the conductor, and the conductor has a mating end surface;

[0116] The mating end surface is exposed outside the second insulating coating layer and abuts against the abutting ring surface.

[0117] Furthermore, the sheath portion further comprises:

[0118] a conductor having a second accommodating hole, the stop ring surface, and the first accommodating hole, wherein the second accommodating hole has an open end away from the first accommodating hole; and

[0119] An insulating liner, comprising an outer flange and a cylinder, wherein the inner wall of the cylinder forms the second slideway;

[0120] The cylinder is arranged in the second accommodating hole, and the outer rim is clamped at the opening end.

[0121] Furthermore, the moving part further includes an insulating spacer block, and the insulating spacer block is arranged between the first operating arm and the second operating arm;

[0122] There are two outer rims extending in opposite directions;

[0123] The conductor includes two arms, which are protruded from the opening end and staggered with the two outer edges;

[0124] The insulating spacer has a first hinge hole and a second hinge hole, the second operating arm has a third hinge hole and a fourth hinge hole, the first operating arm has a fifth hinge hole and a sixth hinge hole, the support arm has a seventh hinge hole, and the moving head has an eighth hinge hole;

[0125] The first hinge hole and the third hinge hole are hinged to the seventh hinge hole at the same time, the second hinge hole and the fourth hinge hole are hinged to the fifth hinge hole at the same time, the eighth hinge hole is hinged to the sixth hinge hole, and the two outer edges correspond to the first operating arm and the second operating arm respectively.

[0126] Furthermore, the pull line further comprises:

[0127] A conductive core and a third insulating coating layer, wherein the third insulating coating layer covers the corresponding areas of the conductive core and the rod, and the corresponding areas of the conductive core and the fixing portion are exposed outside the third insulating coating layer.

[0128] In a third aspect, an embodiment of the present invention further provides another electrocoagulation surgical instrument, the electrocoagulation surgical instrument comprising:

[0129] A drive assembly includes a connecting portion, the connecting portion including a hollow rod, the rod including a connecting end; and

[0130] An electrocoagulation assembly comprises a sheath portion, a pulling portion, and a moving portion disposed on the sheath portion, wherein the moving portion comprises a first operating arm and a second operating arm;

[0131] The pulling portion is configured to have one end connected to the moving portion and the other end operably pass through the rod and pull the sheath portion toward the rod until the connecting end is detachably connected to the sheath portion, and the pulling portion is used to drive the first operating arm to approach the second operating arm;

[0132] The moving portion is configured such that the first operating arm and the second operating arm are in communication with the rod through the sheath portion, and / or the first operating arm and the second operating arm are in communication with the pulling portion.

[0133] Furthermore, the pulling portion is configured to be connected to the first operating arm at one end, the second operating arm is provided on the sheath portion, and the first operating arm and the second operating arm are rotationally connected and electrically contacted;

[0134] The pulling portion includes a pulling wire, the pulling wire includes a connecting section and a fixing section, and the connecting section is close to the first operating arm;

[0135] The driving assembly further comprises a fixing portion, which is arranged on a side of the connecting portion away from the electrocoagulation assembly and defines a first channel;

[0136] The fixing section passes through the rod and extends into the first channel and is fixedly connected to the fixing portion. The fixing portion can be operably moved closer to or away from the connecting portion to drive the first operating arm to move relative to the second operating arm.

[0137] Furthermore, the first channel is a through hole;

[0138] The pull line also includes a pull section;

[0139] The drive assembly further includes a body;

[0140] One end of the connecting portion away from the connecting end is connected to the body;

[0141] The electrocoagulation surgical instrument has a spliced ​​state, in which the pulling section extends from one end of the first channel away from the connecting section, and pulls the sheath to splice with the connecting end, and the fixing section is located in the first channel.

[0142] Furthermore, the connecting portion includes a first connecting head, the first connecting head is arranged at an end of the rod away from the connecting end, the rod is provided with a second channel, and the second channel is a through hole;

[0143] The body comprises:

[0144] The accommodating portion has a first slideway, the fixing portion is slidably disposed on the first slideway, and the fixing portion has a first position and a second position in the first slideway. In the first position, the fixing portion is located at an end of the first slideway close to the sheath portion, and the first hole and the second hole extend along the same axis. In the second position, the fixing portion is located at an end of the first slideway away from the sheath portion, and the first operating arm is close to the second operating arm.

[0145] The second connector is a conductive member and has a fourth hole, and the pull wire can operably pass through the fourth hole and the first slideway;

[0146] The first connector is fixedly connected to the second connector, and the second connector is connected to the sheath through the rod.

[0147] Furthermore, the second connector is provided with a positioning groove, and the positioning groove is recessed from the outer side of the second connector toward the fourth channel;

[0148] The driving assembly further includes a shell and a conductive ring, wherein the conductive ring is disposed in the positioning groove and electrically connected to the second connector, and at least a portion of the second connector is disposed on the inner side of the shell, and the shell is an insulating member.

[0149] Furthermore, the driving assembly further includes a conductive arm, one end of which is connected to the conductive ring, and the other end of which extends to the outside of the shell.

[0150] Furthermore, the pulling portion further includes a moving head, and the moving head is connected to the connecting section and the tail of the first operating arm;

[0151] The sheath portion includes a second elastic member, a second slideway, a stop ring surface, and a first accommodating hole, wherein the first accommodating hole is a through hole, the stop ring surface is located between the second slideway and the first accommodating hole, the moving head is slidably disposed in the second slideway, and the second elastic member abuts between the moving head and the stop ring surface;

[0152] When the pulling portion is in a free state, the second elastic member pushes the first operating arm away from the second operating arm;

[0153] In the assembled state, at least a portion of the connecting end is inserted into the first accommodating hole.

[0154] Furthermore, the connecting end includes an abutting annular surface and a plug connector, and the plug connector is protruded from the central area of ​​the abutting annular surface;

[0155] The sheath also includes:

[0156] an elastic sleeve disposed on the second slideway, wherein the second elastic member abuts against the stop ring surface through the elastic sleeve, the elastic sleeve defines a tapered hole, the small-diameter end of the tapered hole is away from the stop ring surface, and the inner diameter of at least a portion of the tapered hole is smaller than the outer diameter of the plug connector;

[0157] In the assembled state, the plug connector is inserted into the first receiving hole and the tapered hole simultaneously until the abutting annular surface abuts against the sheath portion.

[0158] Furthermore, the rod is a conductive member and includes a transition section and an opposite end, the transition section is located between the connecting end and the opposite end, and the first connector is provided at the opposite end;

[0159] The connecting portion further includes a first insulating coating layer, the first insulating coating layer coating the transition section, and the connecting end is exposed outside the first insulating coating layer;

[0160] The sheath portion further includes a conductor and a second insulating coating covering a portion of an outer area of ​​the conductor, the second operating arm is provided on the conductor, and the conductor has a mating end surface;

[0161] The mating end surface is exposed outside the second insulating coating layer and abuts against the abutting ring surface.

[0162] The intracavitary surgical instrument of the embodiment of the present invention is configured as a detachable operating component and a driving component, and the electrocoagulation surgical instrument of the embodiment of the present invention is configured as a detachable electrocoagulation component and a driving component, thereby making full use of the multiple incisions of laparoscopic surgery, so that the operating component or the electrocoagulation component and the rod can be respectively inserted into the cavity from incisions at different positions, reducing the size of the wound corresponding to the rod and improving the patient's postoperative recovery speed. On the other hand, during the assembly process of the electrocoagulation surgical instrument or the intracavitary surgical instrument, the pulling part can pull the electrocoagulation component or the operating component and the driving component toward each other to facilitate the assembly of the two. At the same time, the pulling part can further pull the first operating arm and the second operating arm closer to each other to realize the electrocoagulation operation of the first operating arm and the second operating arm on the biological tissue, thereby simplifying the surgical operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0163] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0164] FIG1 is a schematic structural diagram of an intracavitary surgical instrument according to an embodiment of the present invention in some embodiments;

[0165] FIG2 is a schematic structural diagram of an intracavitary surgical instrument according to another embodiment of the present invention;

[0166] FIG3 is an exploded schematic diagram of a drive assembly according to an embodiment of the present invention;

[0167] FIG4 is an exploded schematic diagram of an operating assembly according to an embodiment of the present invention;

[0168] FIG5 is a cross-sectional schematic diagram of an operating assembly according to an embodiment of the present invention in some implementations;

[0169] FIG6 is a partial cross-sectional schematic diagram of a drive assembly according to an embodiment of the present invention;

[0170] FIG7 is a partial exploded schematic diagram of a drive assembly according to some embodiments of the present invention;

[0171] FIG8 is a schematic cross-sectional view of an intracavitary surgical instrument according to an embodiment of the present invention in some embodiments;

[0172] 9 is a schematic structural diagram of a conductor and a connection end according to an embodiment of the present invention;

[0173] FIG10 is a schematic structural diagram of a base according to an embodiment of the present invention;

[0174] 11 is a schematic structural diagram of a positioning member according to an embodiment of the present invention;

[0175] FIG12 is a schematic diagram of the working process of the electrocoagulation surgical instrument according to an embodiment of the present invention;

[0176] FIG13 is a schematic cross-sectional view of an electrocoagulation assembly according to another embodiment of the present invention;

[0177] FIG14 is a partial exploded schematic diagram of a drive assembly according to another embodiment of the present invention;

[0178] FIG15 is an exploded schematic diagram of a conductive ring, a conductive arm, and a second connector according to an embodiment of the present invention;

[0179] FIG16 is a schematic structural diagram of a connecting sleeve according to an embodiment of the present invention.

[0180] Explanation of reference numerals: 1-electrocoagulation assembly; 11-connecting sleeve; 111-positioning spring; 112-fixing cylinder; 1121-avoidance hole; 2-driving assembly; 21-body; 211-first slideway; 2111-tail port; 22-blocking member; 221-third channel; 212-window; 23-accommodating portion; 24-second connector; 241-fourth channel; 242-fifth channel; 243-positioning groove; 25-first conductor; 26-second electrical contact; 261-center through hole; 27-second conductor; 281-conductive ring; 282-conductive arm; 291-shell; 292-locking nut; 3-connecting portion ;31-rod;311-connecting end;3111-abutting annular surface;3112-piercing head;312-second channel;313-transition section;314-opposite end;32-first connector;33-first insulating coating;4-sheath;41-second elastic member;42-second slideway;43-stop annular surface;44-first accommodating hole;45-elastic sleeve;451-conical hole;46-conductor;461-matching end surface;462-second accommodating hole;4621-opening end;464-support arm;47-second insulating coating;48-insulating lining;481-outer rim;482-cylinder;5-moving part;51- First operating arm; 52-Second operating arm; 53-Pulling part; 531-Moving head; 54-Pulling wire; 541-Connecting section; 542-Fixing section; 543-Pulling section; 544-Conductive core; 545-Third insulating coating; 56-Insulating spacer; 6-Fixing part; 61-First channel; 62-Locking member; 621-Connecting handle; 622-Sliding body; 623-Groove; 63-Fixing screw; 64-Base; 641-Side hole; 6411- Threaded section; 6412-sliding section; 6413-first positioning hole; 642-accommodating groove; 643-notch; 644-groove; 65-first electrical contact member; 651-electrical contact surface; 66-guide cone surface; 67-first elastic member; 7-sleeve hose; B1-first hinge hole; B2-second hinge hole; B3-third hinge hole; B4-fourth hinge hole; B5-fifth hinge hole; B6-sixth hinge hole; B7-seventh hinge hole; B8-eighth hinge hole. DETAILED DESCRIPTION

[0181] The present invention is described below based on the following embodiments, but the present invention is not limited to these embodiments. In the detailed description of the present invention below, certain specific details are described in detail. Those skilled in the art can fully understand the present invention without these details. To avoid obscuring the essence of the present invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0182] Furthermore, persons of ordinary skill in the art will appreciate that the figures provided herein are for illustration purposes only and are not necessarily drawn to scale.

[0183] Unless the context clearly requires otherwise, words like “include”, “comprising” and the like throughout this application should be interpreted as including rather than exclusive or exhaustive; that is, as meaning “including but not limited to”.

[0184] In the description of the present invention, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0185] Unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," and the like should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0186] Figures 1 and 2 are schematic diagrams of the structure of the intracavitary surgical instrument of this embodiment in different embodiments. The intracavitary surgical instrument can be used as an electrocoagulation surgical instrument. The electrocoagulation surgical instrument in Figure 2 is in an installed state, with the first operating arm 51 and the second operating arm 52 separated from each other. The electrocoagulation surgical instrument in Figure 1 is in a discharge state, with the first operating arm 51 and the second operating arm 52 close to each other and conducting through the location where hemostasis is to be performed.

[0187] Fig. 3 is an exploded schematic diagram of the drive assembly 2. The connecting portion 3 is not shown in the figure.

[0188] Figures 4 and 5 are exploded and cross-sectional views of the operating assembly. The operating assembly can be used as an electrocoagulation assembly 1. Figures 6 and 7 are partial cross-sectional and exploded views of the drive assembly 2. Figure 8 is a cross-sectional view of an intracavitary surgical instrument, which can be used as an electrocoagulation surgical instrument. The pulling portion 53 is not shown in the figure. At the same time, Figures 7 and 8 further illustrate the corresponding relationship between various areas on the pulling wire 54 and the drive assembly 2 and the sheath 4.

[0189] 4-8 , arrows are used to illustrate a specific current flow direction, wherein the solid arrows represent the current flow direction fed into the second operating arm 52 , and the hollow arrows represent the current flow direction out of the first operating arm 51 .

[0190] Fig. 9 is a schematic diagram of the structure of the conductor 46 and the connection end 311. The outline of the connection end 311 is shown by a thick solid line in the figure.

[0191] 10 and 11 are schematic structural diagrams of the base 64 and the positioning member 62 .

[0192] Figure 12 is a schematic diagram of the workflow of the electrocoagulation surgical instrument of this embodiment. States Ia through If represent different stages of the procedure. In State Ib, the puncture needle and puncture cannula are inserted into the cavity through the first and second incisions in Areas I and II, respectively. The first incision is smaller than the second incision. States Ib and Ic also illustrate the sheathed hose 7 being inserted from the puncture needle into the cavity.

[0193] In some embodiments, as shown in Figures 1-8, the electrocoagulation surgical instrument in this embodiment includes an electrocoagulation assembly 1 and a drive assembly 2. The drive assembly 2 includes a connecting portion 3, which includes a hollow rod 31, and the rod 31 includes a connecting end 311. The electrocoagulation assembly 1 includes a sheath 4 and a moving portion 5. The moving portion 5 includes a pulling portion 53 and a first operating arm 51 and a second operating arm 52 arranged in a pair, with the second operating arm 52 disposed on the sheath 4. The pulling portion 53 is configured such that one end is connected to the first operating arm 51, and the pulling portion 53 and the first operating arm 51 form a first electrical path. The other end is operable to pass through the rod 31 and pull the sheath 4 toward the rod 31 until the connecting end 311 is detachably connected to the sheath 4, thereby forming a second electrical path between the rod 31, the sheath 4, and the second operating arm 52. The pulling portion 53 is used to drive the first operating arm 51 toward the second operating arm 52, so that the first electrical path is electrically connected to the second electrical path through biological tissue.

[0194] Specifically, as shown in state Ic in Figures 1 and 12, the pulling operation of the pulling part 53 in this embodiment can be divided into three stages. In the first stage, the electrocoagulation assembly 1 and the drive assembly 2 can be assembled together through the pulling part 53. In the second stage, by continuing to pull the pulling part 53, the first operating arm 51 and the second operating arm 52 can be driven to approach each other to clamp the biological tissue. During this process, the electrocoagulation surgical instrument can be used in conjunction with tools such as a scalpel to treat the lesion. In the third stage, the first operating arm 51 and the second operating arm 52 can be abutted on both sides of the position to be hemostatic, and a coagulation current is applied to the position to be hemostatic through a power supply device electrically connected to the first electrical path and the second electrical path (as shown in state If in Figure 12).

[0195] Optionally, the first operating arm 51 and the second operating arm 52 in this embodiment can be configured as a forceps component, a scissors component, or a tweezers component. Those skilled in the art can make a choice based on the actual operation of the surgery. Taking the forceps component as an example, the first operating arm 51 and the second operating arm 52 in this embodiment are configured as two forceps heads, so that the two forceps heads can be brought close to each other to clamp, pull, and apply a coagulation current to the biological tissue. Taking the scissors component as an example, the first operating arm 51 and the second operating arm 52 are configured as two scissor arms, which can achieve the effect of shearing and electrocoagulating the biological tissue.

[0196] It is easy to understand that in the application text with publication number CN110545736A, the operating device and the hollow needle are respectively inserted into the cavity from the first incision and the second incision, and the operating device is further controlled to clamp the lesion and pull it in a direction roughly perpendicular to the cannula to expose the lesion area for the doctor's surgical operation.

[0197] In this embodiment, the electrocoagulation assembly 1 can be placed into the cavity through the second incision, a portion of the rod 31 can be inserted into the cavity through the first incision, and the pulling portion 53 can be inserted into the rod 31 using a surgical tool, so that the operator can pull the pulling portion 53. Alternatively, after the electrocoagulation assembly 1 is placed in the human body, the tail of the pulling portion 53 can be guided out of the human body through a puncture needle using a surgical tool, and the pulling portion 53 can be inserted into the rod 31 from the outside of the human body.

[0198] This makes the size of the first wound smaller. When the diameter of the puncture needle and the rod 31 is less than 3 mm, the first wound will close after the puncture needle and the rod 31 are pulled out. No suturing operation is required, which reduces the damage caused by the operation to the human body.

[0199] In some embodiments, as shown in state If in Figures 8 and 12, the rod 31 includes a first extension section and a second extension section in the length direction. The diameter of the first extension section is configured to be less than 3 mm, and the diameter of the first extension section is smaller than the diameter of the second extension section.

[0200] During intracavitary surgery, a portion of the first extension section in this embodiment is inserted into the cavity, while the second extension section remains outside the body. Consequently, the second extension section can increase the overall length of rod 31, facilitating surgical procedures. Furthermore, the second extension section increases the mechanical strength of rod 31, reducing or even preventing bending of rod 31 during surgery.

[0201] In summary, the electrocoagulation surgical instrument of this embodiment uses the pulling portion 53 and the first operating arm 51 to form a first electrical path, and uses the sheath portion 4 and the second operating arm 52 to form a second electrical path to apply a coagulation current to biological tissue. Thus, on the one hand, the electrocoagulation surgical instrument is configured as a detachable and assembling electrocoagulation component 1 and drive component 2, which fully utilizes the multiple incisions of laparoscopic surgery, so that the electrocoagulation component 1 and the rod 31 can be inserted into the cavity from different incisions respectively, reducing the size of the incision corresponding to the rod 31 and improving the patient's postoperative recovery speed. On the other hand, during the assembly process of the electrocoagulation component 1 and the drive component 2, the pulling portion 53 can pull the electrocoagulation component 1 and the drive component 2 toward each other to facilitate the assembly of the two. At the same time, the pulling portion 53 can further pull the first operating arm 51 and the second operating arm 52 closer to each other to achieve the electrocoagulation operation of the first operating arm 51 and the second operating arm 52 on the biological tissue, thereby simplifying the surgical operation.

[0202] In some embodiments, as shown in Figures 1-4, the first operating arm 51 and the second operating arm 52 in this embodiment can be configured to perform surgical operations such as clamping, pulling, suturing, or shearing biological tissue. When the first operating arm 51 and the second operating arm 52 form a forceps component, the first operating arm 51 and the second operating arm 52 in this embodiment are configured as two forceps heads, which can clamp or pull biological tissue by moving the two forceps heads closer together. When the first operating arm 51 and the second operating arm 52 form a scissors component, the first operating arm 51 and the second operating arm 52 in this embodiment are configured as two scissor arms, which can shear biological tissue to separate it from the human body. When the first operating arm 51 and the second operating arm 52 form a forceps component, the first operating arm 51 and the second operating arm 52 in this embodiment are configured as two forceps rods, with the ends of the first operating arm 51 and the second operating arm 52 forming forceps heads. The two forceps heads can be used to clamp a suture needle to facilitate suturing biological tissue.

[0203] In some embodiments, as shown in Figures 1-8, the pulling portion 53 includes a pulling wire 54, which includes a connecting section 541 and a fixing section 542. The connecting section 541 is adjacent to the first operating arm 51. The driving assembly 2 also includes a fixing portion 6, which is disposed on a side of the connecting portion 3 away from the electrocoagulation assembly 1 and defines a first channel 61. The fixing section 542 passes through the rod 31 into the first channel 61 and is fixedly connected to the fixing portion 6. The fixing portion 6 can be operably moved closer to or further away from the connecting portion 3 to drive the first operating arm 51 to move relative to the second operating arm 52.

[0204] In this embodiment, the pull wire 54 is flexible, facilitating insertion of the electrocoagulation assembly 1 through the first wound opening into the cavity. Furthermore, during the first, second, and third stages, the pull wire 54 provides the pulling force required to bring the electrocoagulation assembly 1 and the drive assembly 2 closer together, and to bring the first operating arm 51 and the second operating arm 52 closer together. Furthermore, it serves as a guide wire for directing the coagulation current.

[0205] Preferably, as shown in Figure 12, the electrocoagulation surgical instrument further includes a sleeve hose 7. The sleeve hose 7 is hollow and has a certain elasticity. In this embodiment, the sleeve hose 7 can be inserted into the human body via a puncture needle. A gripping tool is inserted from the puncture cannula into the cavity to grip the sleeve hose 7 and guide it through the second incision to the outside of the human body. In this configuration, the middle region of the sleeve hose 7 is located within the cavity. In other words, the tail portion does not penetrate the puncture needle. After the head portion of the sleeve hose 7 is sleeved with the pull wire 54, the tail portion of the sleeve hose 7 is pulled to bring the electrocoagulation assembly 1 into the cavity. The sleeve hose 7 is then pulled further, allowing the fixed section 542 of the pull wire 54 to be guided through the puncture needle to the outside of the human body. The puncture needle is then removed, the sleeve hose 7 is separated from the pull wire 54, and the pull wire 54 is inserted into the rod 31. Finally, the pull wire 54 is pulled to connect the sheath 4 to the connecting end 311 of the rod 31. During this process, the connecting end 311 is inserted into the cavity through the first incision.

[0206] In some embodiments, as shown in Figures 1-8, the first channel 61 is a through hole. The pull wire 54 also includes a pull section 543. The drive assembly 2 also includes a body 21. The end of the connecting portion 3 away from the connecting end 311 is connected to the body 21. The electrocoagulation surgical instrument has a spliced ​​state. In the spliced ​​state, the pull section 543 extends from the end of the first channel 61 away from the connecting section 541 and pulls the sheath 4 to splice with the connecting end 311, and the fixing section 542 is located within the first channel 61.

[0207] Thus, on the one hand, the pulling section 543 in this embodiment is used by the operator to pull the electrocoagulation assembly 1, so that the electrocoagulation assembly 1 and the driving assembly 2 are aligned with each other. On the other hand, when the sheath 4 and the connecting end 311 are assembled with each other, the fixing section 542 is ensured to be exactly located within the first channel 61. This allows the operator to secure the fixing section 542 located within the first channel 61 through the fixing portion 6. On the other hand, the above-mentioned sleeve hose 7 can be sleeved on the pulling section 543, so that the sleeve hose 7 can lead the pulling wire 54 through the first wound to the outside of the human body.

[0208] In some embodiments, as shown in Figures 1-8, the rod 31 defines a second hole 312, which is a through hole. The body 21 is provided with a first slide 211, and the fixing portion 6 is slidably disposed on the first slide 211. The fixing portion 6 has a first position and a second position within the first slide 211. In the first position, the fixing portion 6 is located at an end of the first slide 211 close to the sheath 4, and the first hole 61 and the second hole 312 extend along the same axis. In the second position, the fixing portion 6 is located at an end of the first slide 211 away from the sheath 4, and the first operating arm 51 approaches the second operating arm 52 and maintains a predetermined distance.

[0209] When the fixing portion 6 moves from the first position to the second position, the pull wire 54 can be pulled to move the first operating arm 51 and the second operating arm 52 closer together to clamp the biological tissue. At the same time, when the electrocoagulation surgical instrument applies a coagulation current, the fixing portion 6 can also be moved from the second position to the first position to release the first operating arm 51 and the second operating arm 52 from clamping the biological tissue.

[0210] Preferably, the axial direction of the first slideway 211 is parallel to the first hole 61 and the second hole 312. When the pulling section 543 is inserted into the body 21 through the rod 31, it can be ensured that the pulling section 543 moves directly into the second hole 312. This reduces or even avoids the situation where the pulling wire 54 cannot simultaneously penetrate the first hole 61 and the second hole 312.

[0211] In some embodiments, as shown in FIG7 , the first channel 61 and the port on the opposite side of the second channel 312 are separated by a predetermined distance (distance L1). The fixing portion 6 defines a guide conical surface 66 , the small diameter end of which is connected to the port of the first channel 61 near the second channel 312 .

[0212] It's easy to understand that in this embodiment, a certain distance is maintained between the first channel 61 and the second channel 312 to accommodate the first wire 25, the second wire 27, or other components, thereby preventing the interior of the body 21 from becoming too cramped. For example, as shown in Figure 7, a receiving cavity is provided between the fourth channel 241 and the first slideway 211. When the fixing portion 6 moves toward the sheath 4, it will come into contact with the first wire 25. The receiving cavity provides clearance when the first wire 25 bends, thereby preventing any strain on the first wire 25.

[0213] However, when the pull wire 54 extends from the first hole 61 into the interior of the body 21, the flexibility of the pull wire 54 causes it to bend to one side (as shown by the dotted line III in FIG7 ). To this end, the guide conical surface 66 in this embodiment can guide the end of the pull wire 54, especially when the pull wire 54 is relatively soft, to ensure that the pull wire 54 can pass through the first hole 61 and the second hole 312.

[0214] In some embodiments, as shown in Figures 6-7, the fixing portion 6 further includes a positioning member 62, a fixing screw 63, and a base 64. The base 64 defines a first channel 61 and a side hole 641. The side hole 641 is connected to the first channel 61 and faces laterally of the first channel 61. The side hole 641 has a threaded section 6411 and a sliding section 6412 in the axial direction. The sliding section 6412 is adjacent to the first channel 61, and the positioning member 62 is slidably disposed in the sliding section 6412. The fixing screw 63 is configured to penetrate the threaded section 6411 and push the positioning member 62 into the first channel 61 to secure the fixing section 542.

[0215] The operator can maintain the tension of the pull line 54 after the sheath 4 is aligned with the connecting end 311. By tightening the fixing screw 63, the positioning member 62 can be pressed against the fixing section 542.

[0216] Furthermore, as shown in Figures 1-8, the body 21 defines a window 212. Window 212 extends through the sidewall of the first slideway 211 and its length is parallel to the axial direction of the first slideway 211. The head of the fixing screw 63 extends through the window 212. In the first and second positions, the fixing screw 63 is positioned at the edge of the window 212 along its length.

[0217] The window 212 of this embodiment can avoid the fixing screw 63. The dotted line IVa in Figure 3 represents the axis position of the fixing screw 63 in the first position and the second position. The cooperation between the window 212 and the fixing screw 63 can further limit the movement of the fixing part 6 in the first slideway 211.

[0218] In some embodiments, as shown in Figures 1-11, the base 64 and the fixing screw 63 are insulating parts. The positioning member 62 includes a plurality of connecting handles 621 and a sliding body 622 adapted to the sliding section 6412. The plurality of connecting handles 621 are protruding from the side of the sliding body 622 away from the fixing screw 63. The fixing portion 6 also includes a plurality of first elastic members 67 and a first electrical contact member 65. The first electrical contact member 65 is provided on the base 64 and includes an electrical contact surface 651, and the electrical contact surface 651 is protruding in the first channel 61. A plurality of first positioning holes 6413 are provided at the bottom of the side hole 641, and the plurality of first positioning holes 6413 are arranged on both sides of the first channel 61. The plurality of first elastic members 67 are provided in the plurality of first positioning holes 6413 in a one-to-one correspondence.

[0219] At the same time, the fixing screw 63 is screwed into the threaded section 6411, and the tail of the fixing screw 63 pushes the sliding body 622 close to the electrical contact surface 651 to clamp the fixed section 542, and the first electrical contact member 65 is electrically connected to the fixed section 542. At the same time, multiple connecting handles 621 are correspondingly inserted into the multiple first positioning holes 6413 and abut against the multiple first elastic members 67 one by one.

[0220] Specifically, the first elastic member 67 in this embodiment is a spring, one end of which abuts against the bottom surface of the first positioning hole 6413 , and the other end of which abuts against the end surface of the connecting handle 621 .

[0221] Thus, on the one hand, the cooperation between the multiple connecting handles 621 and the multiple first positioning holes 6413 in this embodiment prevents the sliding body 622 from rotating relative to the fixing section 542, thereby preventing damage to the pull wire 54. On the other hand, when the fixing screw 63 is screwed outward from the threaded section 6411, the first elastic member 67 can simultaneously lift the positioning member 62 to facilitate the extraction of the pull wire 54 from the fixing portion 6, thereby preventing the pull wire 54 from adhering to the positioning member 62.

[0222] Specifically, the base 64 is provided with a receiving groove 642, and the first electrical contact 65 is disposed in the receiving groove 642 and electrically connected to the power supply device through the second wire 27. The insulated base 64 and fixing screw 63 can prevent the coagulation current from being conducted to the operator's hand.

[0223] In some embodiments, as shown in Figures 7 and 10, the bottom of the accommodating groove 642 defines a notch 643. The second wire 27 can be connected to the first electrical contact 65 through the notch 643. The bottom of the base 64 also defines a groove 644. The wrench is rotatably connected to the body 21, and the top protrusion of the wrench can extend into the groove 644 to drive the fixed portion 6 to move linearly.

[0224] Furthermore, a groove 623 is provided on the side of the sliding body 622 facing the pull wire 54. The depth and curvature of the groove 623 match the top of the fixed segment 542. When the sliding body 622 is pressed against the fixed segment 542, the groove 623 fits snugly against the top surface of the fixed segment 542. Furthermore, the interaction between the multiple connecting handles 621 and the multiple first positioning holes 6413 further ensures that the extension direction of the groove 623 aligns with the length of the pull wire 54.

[0225] In some embodiments, as shown in Figures 1-8, the first slide 211 has a tail port 2111, which is located on the side of the first slide 211 away from the sheath 4. The drive assembly 2 also includes a blocking member 22, which is an insulating member and includes a limiting protrusion, and the limiting protrusion is provided with a third channel 221. The fixed section 542 is located in the first channel 61, and the pulling section 543 extends to the outside of the body 21 through the tail port 2111. The blocking member 22 blocks the tail port 2111, and the third channel 221 extends along the same axis as the first channel 61. At least part of the pulling section 543 is telescopically provided in the third channel 221. In the above-mentioned second position, the limiting protrusion abuts against the fixed portion 6.

[0226] The length of the pulling section 543 in this embodiment can be configured to adapt to the size of the operator's hand, so that the operator can perform the pulling operation. At the same time, the limiting protrusion can limit the displacement of the fixing portion 6 to prevent the first operating arm 51 and the second operating arm 52 from being too close to each other and damaging human tissue. As shown in state Ⅰe in Figure 12, after the sheath 4 is aligned with the connecting end 311, the operator can cut off at least part of the pulling section 543. Then the third channel 221 is placed on it. Therefore, in the process of the pulling wire 54 pulling the first operating arm 51, the pulling wire 54 can achieve simultaneous telescopic movement in the first channel 61, the second channel 312 and the third channel 221, avoiding the end of the pulling section 543 from interfering with the blocking member 22, thereby affecting the pulling action of the pulling portion 53.

[0227] In some embodiments, as shown in Figures 1-8, the connecting portion 3 includes a first connector 32, which is disposed at an end of the rod 31 away from the connecting end 311. The body 21 includes a receiving portion 23 and a second connector 24. The receiving portion 23 defines a first slide 211, and the second connector 24 is protruding from one side of the receiving portion 23 and defines a fourth hole 241. The pull wire 54 can operably pass through the fourth hole 241 and the first slide 211. The driving assembly 2 also includes a first wire 25. The first connector 32 and the second connector 24 are in a connected state, the fourth hole 241 and the first hole 61 extend along the same axis, and one end of the first wire 25 is electrically connected to the first connector 32, and the other end extends to the outside of the body 21. In this embodiment, one end of the first wire 25 is electrically connected to the second operating arm 52, and the other end is electrically connected to the power supply device to achieve power supply to the second operating arm 52.

[0228] Furthermore, the drive assembly 2 also includes a second electrical contact 26. The second electrical contact 26 defines a central through hole 261 that is sleeved on the pull wire 54. The second connector 24 defines a fifth channel 242, which is connected to the first slide 211 and parallel to the fourth channel 241. The first connector 32 and the second connector 24 are arranged in pairs and are in a connected state. The second electrical contact 26 abuts between the end face of the rod 31 and the second connector 24, and the central through hole 261 is aligned with the first channel 61 and the fourth channel 241. The first wire 25 passes through the first slide 211 and the fifth channel 242 and is connected to the second electrical contact 26. In this embodiment, the second connector 24 increases the contact area with the rod 31 to facilitate current conduction in the first wire 25.

[0229] Specifically, the first hole 61, the second hole 312, the third hole 221, and the fourth hole 241 extend along the same axis, that is, the first hole 61, the second hole 312, the third hole 221, and the fourth hole 241 are aligned. In addition, the inner diameters of the first hole 61, the second hole 312, the third hole 221, and the fourth hole 241 are all larger than the outer diameter of the pull wire 54, ensuring that the pull wire 54 can be retractably inserted into each hole at the same time.

[0230] Preferably, both the first electrical contact 65 and the second electrical contact 26 are elastic contacts. That is, the electrical contact surface 651 has elastic deformation toward the outside of the first channel 61. The second electrical contact 26 is an elastic sheet, with both sides of the sheet elastically deforming toward the center in the thickness direction. This ensures a stable electrical connection between the first electrical contact 65 and the second electrical contact 26.

[0231] In some embodiments, as shown in Figures 1-8, the pulling portion 53 also includes a moving head 531. The moving head 531 is connected to the connecting section 541 and the tail of the first operating arm 51. The sheath portion 4 includes a second elastic member 41, a second slide 42, a stop ring surface 43 and a first accommodating hole 44. The first accommodating hole 44 is a through hole, the stop ring surface 43 is located between the second slide 42 and the first accommodating hole 44, the moving head 531 is slidably disposed in the second slide 42, and the second elastic member 41 abuts between the moving head 531 and the stop ring surface 43. When the pulling portion 53 is in a free state, the second elastic member 41 pushes the first operating arm 51 away from the second operating arm 52. In the assembled state, at least part of the connecting end 311 is inserted into the first accommodating hole 44.

[0232] The moving head 531 of this embodiment cooperates with the second slide 42 to play a guiding role. The second elastic member 41 can ensure that the first operating arm 51 and the second operating arm 52 are in an open state when the fixing portion 6 does not pull the moving head 531.

[0233] In some embodiments, as shown in Figures 1-8, the connecting end 311 includes an abutting annular surface 3111 and a puncture head 3112, with the puncture head 3112 protruding from the center of the abutting annular surface 3111. The sheath 4 also includes an elastic sleeve 45. The elastic sleeve 45 is disposed on the second slideway 42, and the second elastic member 41 abuts against the stop annular surface 43 through the elastic sleeve 45. The elastic sleeve 45 defines a tapered hole 451, with the smaller diameter end of the tapered hole 451 distal to the stop annular surface 43, and the inner diameter of at least a portion of the tapered hole 451 is smaller than the outer diameter of the puncture head 3112. In the assembled state, the puncture head 3112 is simultaneously inserted into the first receiving hole 44 and the tapered hole 451 until the abutting annular surface 3111 abuts the sheath 4.

[0234] This embodiment limits the relative positional relationship between the sheath 4 and the drive assembly 2 by cooperating with the abutting annular surface 3111 and the sheath 4. During the insertion of the puncture head 3112 into the sheath 4, the elastic sleeve 45 can wrap around the puncture head 3112 to prevent the connecting end 311 from easily falling out of the sheath 4. For example, the operator holds the body 21 with his left hand and pulls the pulling section 543 with his right hand. After the puncture head 3112 is inserted into the elastic sleeve 45, the operator can release his right hand and tighten the fixing screw 63 with his right hand. This simplifies the operator's operating difficulty. At the same time, it can also prevent the operating assembly from easily rotating along the circumference of the rod during use of the intracavitary surgical instrument.

[0235] Optionally, the connection end 311 comprises a plug connector, which may have a pointed or flat end. When the plug connector has a flat end, the operator can insert the plug connector through the puncture needle or directly into the first wound, thereby inserting the portion of the rod 31 into the cavity. When the plug connector has a pointed end (i.e., the plug connector forms the puncture head 3112), it is easier for the operator to insert the portion of the rod 31 into the cavity.

[0236] Specifically, when the operator disassembles the intracavitary surgical instrument, the operator can unscrew the fixing screw 63 to the outside of the threaded section 6411 to separate the positioning member 62 from the pulling wire 54, but the puncture head 3112 is still in the elastic sleeve 45. The friction between the puncture head 3112 and the elastic sleeve 45 allows the two to remain in a connected state.

[0237] In this configuration, the operator can use one hand to pull the rod 31 directly out of the first wound or out of the puncture needle. When the rod 31 is pulled out of the puncture needle, the operator can use the other hand to hold one end of the puncture needle, so that the operating assembly or electrocoagulation assembly abuts against the other end of the puncture needle, thereby separating the operating assembly or electrocoagulation assembly from the rod 31. When the rod 31 is pulled out of the first wound, the operator can use the other hand to press near the first wound, so that the operating assembly or electrocoagulation assembly abuts against the skin, thereby separating the operating assembly or electrocoagulation assembly from the rod 31.

[0238] Therefore, the cooperation between the puncture head 3112 and the elastic sleeve 45 not only ensures the stability of the connection during assembly of the intracavitary surgical instrument, but also further simplifies the operating steps when separating the operating component or the electrocoagulation component from the rod 31.

[0239] In some embodiments, as shown in Figures 13 and 16 , the operating assembly further includes a connecting sleeve 11. The connecting sleeve 11 includes multiple positioning springs 111, each of which has an elastic bend toward the outside of the connecting sleeve 11. In other words, when the plug connector is inserted into the connecting sleeve 11, the plug connector pushes the multiple positioning springs 111, causing them to move outward.

[0240] The connecting sleeve 11 is placed in the first receiving hole 44 so that the connecting sleeve 11 is fixedly connected to the sheath 4. The plug connector is inserted into the connecting sleeve 11, and the plurality of positioning springs 111 abut against the side of the plug connector.

[0241] In this embodiment, the plurality of positioning springs 111 cooperate with the plug connector to limit the relative position of the sheath 4 and the drive assembly 2. During the insertion of the plug connector into the sheath 4, the connecting sleeve 11 can wrap around the puncture head 3112, preventing the connecting sleeve 11 from easily falling out of the sheath 4.

[0242] Furthermore, as shown in Figure 11 , the connecting sleeve 11 includes a fixed sleeve 112, which defines a clearance hole 1121. Positioning springs 111 are disposed within the clearance hole 1121, with multiple positioning springs 111 evenly distributed along the circumference of the fixed sleeve 112. When free, the positioning springs 111 bend inwardly of the fixed sleeve 112. The connecting sleeve 11 is secured within the first receiving hole 44 via the fixed sleeve 112. Furthermore, the positioning springs 111 have a first positioning end that contacts the plug connector. In the axial cross-sectional direction of the fixed sleeve 112, the first positioning end bends outwardly of the fixed sleeve 112. In this embodiment, the multiple first positioning ends can be adapted to the side profile of the plug connector to ensure sufficient contact area between the connecting sleeve 11 and the plug connector. Furthermore, the friction between the multiple positioning springs 111 and the plug connector prevents the operating assembly of the intracavitary surgical instrument from easily rotating along the circumference of the rod 31 during use.

[0243] In some embodiments, as shown in Figures 1-8, the rod 31 is a conductive member and includes a transition section 313 and an opposite end 314, wherein the transition section 313 is located between the connecting end 311 and the opposite end 314. The connecting portion 3 also includes a first insulating coating 33, which covers the transition section 313, and the connecting end 311 is exposed outside the first insulating coating 33. The sheath 4 also includes a conductor 46 and a second insulating coating 47 covering a portion of the outer area of ​​the conductor 46. The second operating arm 52 is provided on the conductor 46, and the conductor 46 has a mating end surface 461. The mating end surface 461 is exposed outside the second insulating coating 47 and abuts against the abutting ring surface 3111. In this embodiment, the electrical connection of the second electrical path can be achieved through the abutment between the mating end surface 461 and the abutting ring surface 3111.

[0244] Specifically, as shown in Figures 5, 8, and 9, one side edge of the second insulating coating 47 extends to the edge of the mating end surface 461. One side edge of the first insulating coating 33 extends to the abutting annular surface 3111. When the sheath 4 and the rod 31 are assembled, the first insulating coating 33 and the second insulating coating 47 can also align with each other to reduce or even prevent the connection between the conductor 46 and the rod 31 from being exposed to the human body and causing a short circuit.

[0245] Specifically, as shown in Figure 8 , the first connector 32 includes an extended edge surrounding the rod 31. This extended edge is sleeved over the end of the second connector 24 to ensure radial positioning accuracy. Simultaneously, the first and second connectors, located outside the first and second connectors 32 and 24, are screwed together to achieve axial positioning of the first and second connectors. The first insulating coating 33 also covers the outer edge of the extended edge.

[0246] In some embodiments, as shown in Figures 1-8, the sheath 4 further includes a conductor 46 and an insulating liner 48. The conductor 46 has a second receiving hole 462, a stopper ring 43, and a first receiving hole 44. The second receiving hole 462 has an open end 4621 distal from the first receiving hole 44. The insulating liner 48 includes an outer flange 481 and a cylindrical body 482. The inner wall of the cylindrical body 482 forms the second slideway 42. The cylindrical body 482 is disposed within the second receiving hole 462, with the outer flange 481 engaging the open end 4621.

[0247] Preferably, the insulating liner 48 in this embodiment is made of ceramic, which provides excellent insulation. Furthermore, the smooth surface of the ceramic material also provides excellent guidance for the movement of the moving head 531. Furthermore, the outward flange 481 also serves as a stop, ensuring the precise installation between the conductor 46 and the insulating liner 48.

[0248] Furthermore, the moving portion 5 also includes an insulating spacer 56, which is disposed between the first operating arm 51 and the second operating arm 52. There are two outer flanges 481 extending in opposite directions. The conductor 46 includes two support arms 464, which are protruding from the open end 4621 and staggered with the two outer flanges 481. The insulating spacer 56 has a first hinge hole B1 and a second hinge hole B2, the second operating arm 52 has a third hinge hole B3 and a fourth hinge hole B4, the first operating arm 51 has a fifth hinge hole B5 and a sixth hinge hole B6, the support arm 464 has a seventh hinge hole B7, and the moving head 531 has an eighth hinge hole B8. The first hinge hole B1 and the third hinge hole B3 are hinged to the seventh hinge hole B7 at the same time, the second hinge hole B2 and the fourth hinge hole B4 are hinged to the fifth hinge hole B5 at the same time, the eighth hinge hole B8 is hinged to the sixth hinge hole B6, and the two outward turned edges 481 correspond to the first operating arm 51 and the second operating arm 52 respectively.

[0249] In this embodiment, the two outwardly turned edges 481 can prevent the first operating arm 51 and the second operating arm 52 from being opened at too large an angle and colliding with the conductor 46 , and can also prevent the first operating arm 51 and the conductor 46 from being short-circuited.

[0250] Preferably, as shown in Figure 4, the electrocoagulation assembly 1 further includes a rotating shaft. The second hinge hole B2, the fourth hinge hole B4, and the fifth hinge hole B5 shown in the figure have larger diameters than the other hinge holes. When the rotating shaft is inserted into the second hinge hole B2, the fourth hinge hole B4, and the fifth hinge hole B5, the linear motion of the moving head 531 can be converted into relative rotation of the first operating arm 51 and the second operating arm 52 through a large radial gap. This avoids interference caused by excessively small gaps.

[0251] In some embodiments, as shown in Figures 1-8, the puller wire 54 further includes a conductive core 544 and a third insulating coating 545. The third insulating coating 545 covers the corresponding areas of the conductive core 544 and the rod 31, and the corresponding areas of the conductive core 544 and the fixing portion 6 are exposed outside the third insulating coating 545. The third insulating coating 545 can also cover the sides of the moving head 531.

[0252] In this embodiment, the third insulating coating 545 can prevent the conductive core 544 from short-circuiting with the rod 31 , and the fixing section 542 and the pulling section 543 are not covered with the third insulating coating 545 , so as to facilitate electrical connection with the power supply equipment.

[0253] Figure 13 is a schematic cross-sectional view of the electrocoagulation surgical instrument of this embodiment. Figure 14 is a partially exploded schematic view of the drive assembly 2 of this embodiment. Figure 14 further illustrates the correspondence between various regions on the pulling portion 53 and the drive assembly 2 and sheath 4. Figure 15 is an exploded schematic view of the conductive ring 281, conductive arm 282, and second connector 24 of this embodiment.

[0254] In some embodiments, as shown in FIG. 1-FIG . 2 , the electrocoagulation surgical instrument in this embodiment includes an electrocoagulation component 1 and a driving component 2 .

[0255] 13 and 14 , the drive assembly 2 includes a connecting portion 3. The connecting portion 3 includes a hollow rod 31, which includes a connecting end 311. Further referring to FIG6 and 15 , the electrocoagulation assembly 1 includes a sheath 4, a pulling portion 53, and a moving portion 5 disposed on the sheath 4. The moving portion 5 includes a first operating arm 51 and a second operating arm 52.

[0256] The pulling portion 53 is configured such that one end is connected to the moving portion 5 and the other end is operable to pass through the rod 31 and pull the sheath 4 toward the rod 31 until the connecting end 311 is removably connected to the sheath 4. The pulling portion 53 is used to drive the first operating arm 51 toward the second operating arm 52. The moving portion 5 is configured such that the first operating arm 51 and the second operating arm 52 are electrically connected to the rod 31 through the sheath 4, and / or the first operating arm 51 and the second operating arm 52 are electrically connected to the pulling portion 53.

[0257] Specifically, the rod 31 and the pulling portion 53 in this embodiment are configured as conductive members. The power supply device can supply power to the first operating arm 51 and the second operating arm 52 via the rod 31 (the arrows in FIG13 illustrate the current flow direction), thereby generating an electrocoagulation current between the first operating arm 51 and the second operating arm 52. The power supply device can also supply power to the first operating arm 51 and the second operating arm 52 via the pulling portion 53.

[0258] The electrocoagulation surgical instrument in this embodiment can be used as a monopolar electrocoagulator. A grounding plate is set on the operating table, and the first operating arm 51 and the second operating arm 52 form a path between the biological tissue and the grounding plate, so that the electrocoagulation current applied to the first operating arm 51 and the second operating arm 52 can reduce bleeding from the patient's wound. The first operating arm 51 and the second operating arm 52 in this embodiment can be configured as a forceps component, a scissors component, or a tweezers component. Those skilled in the art can choose according to the actual operation of the operation.

[0259] In summary, the electrocoagulation surgical instrument of this embodiment electrically connects the pulling portion 53 or the rod 31 with the first operating arm 51 and the second operating arm 52 to apply a coagulation current to biological tissue. Thus, on the one hand, the electrocoagulation surgical instrument is configured as a detachable and assembling electrocoagulation component 1 and a driving component 2, which fully utilizes the multiple incisions of laparoscopic surgery, so that the electrocoagulation component 1 and the rod 31 can be respectively inserted into the cavity from different incisions, reducing the size of the incision corresponding to the rod 31 and improving the patient's postoperative recovery speed. On the other hand, during the assembly process of the electrocoagulation component 1 and the driving component 2, the pulling portion 53 can pull the electrocoagulation component 1 and the driving component 2 toward each other to facilitate the assembly of the two. At the same time, the pulling portion 53 can further pull the first operating arm 51 and the second operating arm 52 closer to each other to realize the electrocoagulation operation of the first operating arm 51 and the second operating arm 52 on the biological tissue, thereby simplifying the surgical operation.

[0260] In some embodiments, as shown in Figures 1 to 12, the electrocoagulation surgical instrument in the above embodiment can be used as an intracavitary surgical instrument. The intracavitary surgical instrument includes an operating assembly and a drive assembly 2. The drive assembly 2 includes a connecting portion 3, the connecting portion 3 includes a hollow rod 31, the rod 31 includes a connecting end 311, the connecting end 311 includes an abutting annular surface 3111 and a plug connector, and the plug connector is protruded from the abutting annular surface 3111. The operating assembly includes a sheath portion 4 and a moving portion 5, the sheath portion 4 has a mating end surface 461 and a first accommodating hole 44, the first accommodating hole 44 is a through hole, the moving portion 5 includes a pulling portion 53, a first operating arm 51 and a second operating arm 52, and the second operating arm 52 is provided on the sheath portion 4.

[0261] The pulling portion 53 is configured such that one end is connected to the first operating arm 51 and the other end is operable to pass through the rod 31 and pull the sheath 4 toward the rod 31 until the plug connector is detachably inserted into the first receiving hole 44 and the abutting annular surface 3111 abuts the mating end surface 461. Simultaneously, the pulling portion 53 is used to drive the first operating arm 51 toward the second operating arm 52.

[0262] In this way, the multiple incisions of laparoscopic surgery are fully utilized, so that the operating component and the rod 31 can be inserted into the cavity from incisions at different positions, reducing the size of the incision corresponding to the rod 31 and improving the patient's postoperative recovery speed.

[0263] In some embodiments, as shown in Figures 1-8, the pulling portion 53 is configured such that one end is connected to the first operating arm 51, and the second operating arm 52 is disposed on the sheath portion 4. The first operating arm 51 and the second operating arm 52 are rotationally connected and electrically contacted. In this embodiment, the voltages on the first operating arm 51 and the second operating arm 52 are the same.

[0264] The pulling portion 53 includes a pulling wire 54, which includes a connecting section 541 and a fixing section 542. The connecting section 541 is close to the first operating arm 51. The driving assembly 2 also includes a fixing portion 6, which is arranged on a side of the connecting portion 3 away from the electrocoagulation assembly 1 and has a first channel 61. The fixing section 542 extends through the rod 31 into the first channel 61 and is fixedly connected to the fixing portion 6. The fixing portion 6 can be operably moved closer to or away from the connecting portion 3 to drive the first operating arm 51 to move relative to the second operating arm 52.

[0265] In this embodiment, the pull wire 54 is flexible, facilitating insertion of the electrocoagulation assembly 1 through the first wound opening into the cavity. Furthermore, during the first, second, and third stages, the pull wire 54 provides the pulling force required to bring the electrocoagulation assembly 1 and the drive assembly 2 closer together, and to bring the first operating arm 51 and the second operating arm 52 closer together. Furthermore, it serves as a guide wire for directing the coagulation current.

[0266] In some embodiments, as shown in Figures 1 to 8, the first channel 61 is a through hole. The pull wire 54 further includes a pull section 543. The drive assembly 2 further includes a body 21, and the end of the connecting portion 3 away from the connecting end 311 is connected to the body 21.

[0267] The electrocoagulation surgical instrument has a spliced ​​state. In the spliced ​​state, the pulling section 543 extends from the end of the first channel 61 away from the connecting section 541 and pulls the sheath 4 to splice with the connecting end 311, and the fixing section 542 is located in the first channel 61.

[0268] The pulling section 543 in this embodiment is used by the operator to pull the electrocoagulation assembly 1, so that the electrocoagulation assembly 1 and the drive assembly 2 are aligned with each other. When the sheath 4 and the connecting end 311 are assembled, the fixing section 542 is ensured to be exactly located within the first channel 61. This allows the operator to secure the fixing section 542 within the first channel 61 through the fixing portion 6. Furthermore, the aforementioned sleeve hose 7 can be sleeved onto the pulling section 543, allowing the sleeve hose 7 to guide the pulling wire 54 through the first wound to the outside of the human body.

[0269] In some embodiments, as shown in FIG14 , the connecting portion 3 includes a first connector 32 , which is disposed at an end of the rod 31 away from the connecting end 311 . The body 21 includes a receiving portion 23 and a second connector 24 .

[0270] Further referring to Figure 7, the accommodating portion 23 is provided with a first slide 211, and the fixing portion 6 is slidably disposed on the first slide 211. The fixing portion 6 has a first position and a second position in the first slide 211. In the first position, the fixing portion 6 is located at one end of the first slide 211 close to the sheath 4 and the first channel 61 and the second channel 312 extend along the same axis. In the second position, the fixing portion 6 is located at one end of the first slide 211 away from the sheath 4, and the first operating arm 51 is close to the second operating arm 52. The second connector 24 is a conductive member and is provided with a fourth channel 241, and the pulling wire 54 is operably passed through the fourth channel 241 and the first slide 211. The first connector 32 is fixedly connected to the second connector 24, and the second connector 24 is conductively connected to the sheath 4 through the rod 31.

[0271] Optionally, the pull wire 54 in this embodiment is a conductive core 544. The conductive core 544 includes multiple strands of metal wire. The multiple strands of metal wire are spirally coiled together to increase the mechanical strength of the pull portion and simultaneously reduce the electrical resistance of the conductive core 544.

[0272] In this embodiment, the second connector is used to feed the rod, so that the current conduction on the rod and the second connector is more stable. At the same time, the current can also be conducted to the conductive core 544 located in the second channel 312 and the fourth channel 241, so that the conductive core 544 and the rod conduct current together.

[0273] In some embodiments, as shown in FIG. 14 and FIG. 15 , the second connector 24 defines a positioning groove 243 , and the positioning groove 243 is recessed from the outer side of the second connector 24 toward the fourth channel 241 .

[0274] The driving assembly 2 further includes a shell 291 and a conductive ring 281. The conductive ring 281 is disposed in the positioning groove 243 and electrically connected to the second connector 24. At least part of the second connector 24 is disposed on the inner side of the shell 291. The shell 291 is an insulating member.

[0275] Specifically, as shown in Figure 14, the drive assembly 2 also includes a locking nut 292. The locking nut 292 is an insulating member and is threadedly connected to the shell 291, thereby securely connecting the first connector 32 and the second connector 24. Furthermore, the first connector 32 and the second connector 24 are located inside the locking nut 292 and the shell 291 to prevent electric shock to the operator. In this embodiment, the conductive ring 281 is secured to the positioning slot 243 to ensure a stable connection between the conductive ring 281 and the second connector 24.

[0276] In some embodiments, as shown in Figures 14-15, the drive assembly 2 further includes a conductive arm 282. One end of the conductive arm 282 is connected to the conductive ring 281, and the other end extends outside the shell 291. In this embodiment, one end of the conductive arm extends to the top of the drive assembly 2, and the conductive arm can be connected to the feed cable of the power supply device.

[0277] In some embodiments, as shown in Figures 1-8 and 13 , the pulling portion 53 further includes a moving head 531, which is connected to the connecting section 541 and the tail portion of the first operating arm 51. The sheath portion 4 includes a second elastic member 41, a second slideway 42, a stopper annular surface 43, and a first receiving hole 44. The first receiving hole 44 is a through hole. The stopper annular surface 43 is located between the second slideway 42 and the first receiving hole 44. The moving head 531 is slidably disposed within the second slideway 42, and the second elastic member 41 abuts between the moving head 531 and the stopper annular surface 43.

[0278] When the pulling portion 53 is in a free state, the second elastic member 41 pushes the first operating arm 51 away from the second operating arm 52. In the assembled state, at least a portion of the connecting end 311 is inserted into the first receiving hole 44.

[0279] The moving head 531 of this embodiment cooperates with the second slide 42 to provide a guide, and the second elastic member 41 ensures that the first operating arm 51 and the second operating arm 52 are in an open state when the fixing portion 6 does not pull the moving head 531. The moving head 531 can directly contact the conductor 46, allowing current to be transferred between the two, further ensuring that the voltages of the first operating arm and the second operating arm are the same.

[0280] In some embodiments, as shown in Figures 1-8, the connecting end 311 includes an abutting annular surface 3111 and a plug connector, with the plug connector protruding from the center of the abutting annular surface 3111. The sheath 4 also includes an elastic sleeve 45. The elastic sleeve 45 is disposed on the second slideway 42, and the second elastic member 41 abuts against the stop annular surface 43 through the elastic sleeve 45. The elastic sleeve 45 defines a tapered hole 451, with the smaller diameter end of the tapered hole 451 facing away from the stop annular surface 43, and the inner diameter of at least a portion of the tapered hole 451 is smaller than the outer diameter of the plug connector. In the assembled state, the plug connector is simultaneously inserted into the first receiving hole 44 and the tapered hole 451 until the abutting annular surface 3111 abuts the sheath 4.

[0281] This embodiment restricts the relative position of the sheath 4 and the drive assembly 2 by the cooperation between the abutting annular surface 3111 and the sheath 4. During the insertion of the plug connector into the sheath 4, the elastic sleeve 45 can wrap around the plug connector, preventing the connecting end 311 from easily falling out of the sheath 4.

[0282] In some embodiments, as shown in Figures 1-8 and 13-14, the rod 31 is a conductive member and includes a transition section 313 and an opposite end 314. The transition section 313 is located between the connecting end 311 and the opposite end 314, and the first connector 32 is disposed at the opposite end 314. The connecting portion 3 also includes a first insulating coating 33, which covers the transition section 313, with the connecting end 311 exposed outside the first insulating coating 33. The sheath 4 also includes a conductor 46 and a second insulating coating 47 covering a portion of the outer area of ​​the conductor 46. The second operating arm 52 is disposed on the conductor 46, and the conductor 46 has a mating end surface 461. The mating end surface 461 is exposed outside the second insulating coating 47 and abuts against the abutment ring surface 3111. In this embodiment, the electrical connection between the rod and the sheath can be achieved through the abutment between the mating end surface 461 and the abutment ring surface 3111.

[0283] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An intracavitary surgical instrument, characterized in that: The intracavitary surgical instrument comprises: A drive assembly (2), comprising a connecting portion (3), the connecting portion (3) comprising a hollow rod (31), the rod (31) comprising a connecting end (311), the connecting end (311) comprising an abutting annular surface (3111) and a plug connector, the plug connector being protruding from the abutting annular surface (3111); and An operating assembly comprises a sheath portion (4) and a moving portion (5), wherein the sheath portion (4) has a mating end surface (461) and a first accommodating hole (44), wherein the first accommodating hole (44) is a through hole, and the moving portion (5) comprises a pulling portion (53), a first operating arm (51) and a second operating arm (52), wherein the second operating arm (52) is arranged on the sheath portion (4); The pulling portion (53) is configured to have one end connected to the first operating arm (51) and the other end operably pass through the rod (31) and pull the sheath portion (4) toward the rod (31) until the plug connector is detachably inserted into the first receiving hole (44) and the abutting annular surface (3111) abuts against the mating end surface (461), and the pulling portion (53) is used to drive the first operating arm (51) to approach the second operating arm (52).

2. The intracavitary surgical instrument according to claim 1, characterized in that: The pulling portion (53) includes a pulling wire (54), the pulling wire (54) includes a connecting section (541) and a fixing section (542), and the connecting section (541) is close to the first operating arm (51); The driving assembly (2) further comprises a fixing portion (6), wherein the fixing portion (6) is arranged on a side of the connecting portion (3) away from the operating assembly and has a first hole (61); The fixing section (542) passes through the rod (31) into the first hole (61) and is fixedly connected to the fixing portion (6); the fixing portion (6) can be operably moved closer to or farther away from the connecting portion (3) to drive the first operating arm (51) to move relative to the second operating arm (52).

3. The intracavitary surgical instrument according to claim 2, characterized in that: The first channel (61) is a through hole; The pulling wire (54) further includes a pulling section (543); The driving assembly (2) further comprises a body (21); An end of the connecting portion (3) away from the connecting end (311) is connected to the main body (21); The intracavitary surgical instrument has a spliced ​​state, in which the pulling section (543) extends from one end of the first channel (61) away from the connecting section (541), and pulls the sheath (4) to assemble with the connecting end (311), and the fixing section (542) is located in the first channel (61).

4. The intracavitary surgical instrument according to claim 3, characterized in that: The rod (31) is provided with a second hole (312), and the second hole (312) is a through hole; The body (21) is provided with a first slideway (211), and the fixing portion (6) is slidably arranged on the first slideway (211). The fixing portion (6) has a first position and a second position in the first slideway (211). In the first position, the fixing portion (6) is located at one end of the first slideway (211) close to the sheath portion (4) and the first hole (61) and the second hole (312) extend along the same axis. In the second position, the fixing portion (6) is located at one end of the first slideway (211) away from the sheath portion (4), and the first operating arm (51) approaches the second operating arm (52) and maintains a predetermined distance.

5. The intracavitary surgical instrument according to claim 4, characterized in that: The axial direction of the first slideway (211) is parallel to the first hole (61) and the second hole (312).

6. The intracavitary surgical instrument according to claim 4, characterized in that: The first channel (61) and the port on the opposite side of the second channel (312) have a predetermined distance; The fixing portion (6) is provided with a guide conical surface (66), and the small diameter end of the guide conical surface (66) is adjacent to the first hole (61) The port of the second channel (312) is connected.

7. The intracavitary surgical instrument according to claim 6, characterized in that: The pulling wire (54) is flexible; The body (21) has a fourth hole (241) and a receiving cavity, the pulling wire (54) can operably pass through the fourth hole (241) and the first slideway (211), the receiving cavity is located between the fourth hole (241) and the first slideway (211), the fixing portion (6) moves toward the sheath portion (4), and the area of ​​the receiving cavity located between the fourth hole (241) and the fixing portion (6) forms an escape space; The pulling wire (54) extends into the accommodating cavity, and the end of the pulling wire (54) is placed on the guiding conical surface (66) and slides from the guiding conical surface (66) to the first channel (61).

8. The intracavitary surgical instrument according to claim 4, characterized in that: The fixing part (6) further comprises: Positioning member (62); a fixing screw (63); and A base (64) is provided with the first hole (61) and a side hole (641), the side hole (641) is connected with the first hole (61) and faces the side of the first hole (61), the side hole (641) has a threaded section (6411) and a sliding section (6412) in the axial direction, the sliding section (6412) is adjacent to the first hole (61), and the positioning member (62) is slidably arranged on the sliding section (6412); The fixing screw (63) is configured to penetrate the threaded section (6411) and push the positioning member (62) to move into the first hole (61) to fix the fixing section (542).

9. The intracavitary surgical instrument according to claim 8, characterized in that: The body (21) is provided with a window (212), the window (212) passes through a side wall of one side of the first slideway (211), and the length direction of the window (212) is parallel to the axial direction of the first slideway (211); The head of the fixing screw (63) extends out from the window (212), and in the first position and the second position, the fixing screw (63) moves to the edge position in the length direction of the window (212) respectively.

10. The intracavitary surgical instrument according to claim 8, characterized in that: The positioning member (62) comprises a plurality of connecting handles (621) and a sliding body (622) adapted to the sliding section (6412), wherein the plurality of connecting handles (621) are protrudingly arranged on a side of the sliding body (622) facing away from the fixing screw (63); The fixing part (6) further comprises: a plurality of first elastic members (67); and A plurality of first positioning holes (6413) are provided at the bottom of the side hole (641), the plurality of first positioning holes (6413) are arranged on both sides of the first channel (61), and the plurality of first elastic members (67) are respectively arranged in the plurality of first positioning holes (6413); The fixing screw (63) is screwed into the threaded section (6411), and the tail of the fixing screw (63) pushes the sliding body (622) close to the first channel (61) to clamp the fixing section (542), and the multiple connecting handles (621) are correspondingly arranged in the multiple first positioning holes (6413) and abut against the multiple first elastic members (67).

11. The intracavitary surgical instrument according to claim 10, characterized in that: The fixing screw (63) is screwed out from the threaded section (6411), and the first elastic member (67) lifts up the positioning member (62).

12. The intracavitary surgical instrument according to claim 4, characterized in that: The first slideway (211) has a tail port (2111), and the tail port (2111) is located on a side of the first slideway (211) away from the sheath (4); The driving assembly (2) further comprises a blocking member (22), wherein the blocking member (22) comprises a limiting protrusion, and the limiting protrusion is provided with a third hole (221); The fixing section (542) is located in the first hole (61), and the pulling section (543) extends to the outside of the body (21) through the tail port (2111); The blocking member (22) blocks the tail port (2111), and the third channel (221) and the first channel (61) are arranged along the same axis. The pulling section (543) is extended, and at least a portion of the pulling section (543) is telescopically disposed in the third hole (221); In the second position, the limiting protrusion abuts against the fixing portion (6).

13. The intracavitary surgical instrument according to claim 2, characterized in that: The intracavitary surgical instrument further comprises: A puncture needle; and The sleeve hose (7) is a hollow structure and comprises a head, a tail and a middle area between the head and the tail; The sleeve hose (7) passes through the puncture needle, and the puncture needle is located between the middle area and the tail portion, the head portion is used to sleeve the pull wire (54), and the tail portion is used to drive the pull wire (54) to pass through the puncture needle.

14. The intracavitary surgical instrument according to claim 3, characterized in that: The pulling portion (53) further comprises a moving head (531), wherein the moving head (531) is connected to the connecting section (541) and the tail of the first operating arm (51); The sheath portion (4) comprises a second elastic member (41), a second slideway (42) and a stop ring surface (43), wherein the stop ring surface (43) is located between the second slideway (42) and the first accommodating hole (44), the moving head (531) is slidably disposed in the second slideway (42), and the second elastic member (41) abuts between the moving head (531) and the stop ring surface (43); When the pulling portion (53) is in a free state, the second elastic member (41) pushes the first operating arm (51) away from the second operating arm (52); In the assembled state, at least a portion of the connection end (311) is inserted into the first receiving hole (44).

15. The intracavitary surgical instrument according to claim 14, characterized in that: The plug connector is a piercing head (3112), and the piercing head (3112) is convexly arranged in the central area of ​​the abutting annular surface (3111); The sheath part (4) further comprises: An elastic sleeve (45) is arranged on the second slideway (42), the second elastic member (41) abuts against the stop ring surface (43) through the elastic sleeve (45), the elastic sleeve (45) is provided with a tapered hole (451), the small diameter end of the tapered hole (451) is far away from the stop ring surface (43), and the inner diameter of at least part of the tapered hole (451) is smaller than the outer diameter of the plug connector; In the assembled state, the piercing head (3112) is simultaneously inserted into the first receiving hole (44) and the tapered hole (451) until the abutting annular surface (3111) abuts against the matching end surface (461).

16. The intracavitary surgical instrument according to claim 1, characterized in that: The operating assembly further comprises a connecting sleeve (11), wherein the connecting sleeve (11) comprises a plurality of positioning spring pieces (111), wherein the plurality of positioning spring pieces (111) have an elastic bending amount toward the outside of the connecting sleeve (11); The connecting sleeve (11) is arranged in the first accommodating hole (44), the plug connector is inserted into the connecting sleeve (11), and a plurality of positioning spring sheets (111) abut against the side of the plug connector.

17. The intracavitary surgical instrument according to claim 1, characterized in that: The rod (31) comprises a first extension section and a second extension section in the length direction, the diameter of the first extension section is less than 3 mm, and the diameter of the first extension section is smaller than the diameter of the second extension section.

18. An electrocoagulation surgical instrument, characterized in that: The electrocoagulation surgical instrument comprises: A driving assembly (2) comprises a connecting portion (3), wherein the connecting portion (3) comprises a hollow rod (31), and the rod (31) comprises a connecting end (311); and An electrocoagulation assembly (1) comprises a sheath portion (4) and a moving portion (5), wherein the moving portion (5) comprises a pulling portion (53), a first operating arm (51) and a second operating arm (52), wherein the second operating arm (52) is arranged on the sheath portion (4); The pulling portion (53) is configured such that one end is connected to the first operating arm (51) and the pulling portion (53) and the first operating arm (51) form a first electrical path, and the other end can be operably passed through the rod (31) and pull the sheath (4) toward the rod (31) until the connecting end (311) is detachably connected to the sheath (4), so that the rod (31) is connected to the sheath (4) and the rod (31). The second operating arm (52) forms a second electrical path, and the pulling portion (53) is used to drive the first operating arm (51) to approach the second operating arm (52).

19. The electrocoagulation surgical instrument according to claim 18, characterized in that: The pulling portion (53) includes a pulling wire (54), the pulling wire (54) includes a connecting section (541) and a fixing section (542), and the connecting section (541) is close to the first operating arm (51); The driving assembly (2) further comprises a fixing portion (6), wherein the fixing portion (6) is arranged on a side of the connecting portion (3) away from the electrocoagulation assembly (1) and has a first hole (61); The fixing section (542) passes through the rod (31) and extends into the first hole (61) and is fixedly connected to the fixing portion (6); the fixing portion (6) can be operably moved closer to or farther away from the connecting portion (3) to drive the first operating arm (51) to move relative to the second operating arm (52).

20. The electrocoagulation surgical instrument according to claim 19, characterized in that: The first channel (61) is a through hole; The pulling wire (54) further includes a pulling section (543); The driving assembly (2) further comprises a body (21); An end of the connecting portion (3) away from the connecting end (311) is connected to the main body (21); The electrocoagulation surgical instrument has a spliced ​​state, in which the pulling section (543) extends from one end of the first channel (61) away from the connecting section (541), and pulls the sheath (4) to assemble with the connecting end (311), and the fixing section (542) is located in the first channel (61).

21. The electrocoagulation surgical instrument according to claim 20, characterized in that: The rod (31) defines a second hole (312), and the second hole (312) is a through hole; The body (21) is provided with a first slideway (211), and the fixing portion (6) is slidably arranged on the first slideway (211). The fixing portion (6) has a first position and a second position in the first slideway (211). In the first position, the fixing portion (6) is located at one end of the first slideway (211) close to the sheath portion (4) and the first hole (61) and the second hole (312) extend along the same axis. In the second position, the fixing portion (6) is located at one end of the first slideway (211) away from the sheath portion (4), and the first operating arm (51) approaches the second operating arm (52) and maintains a predetermined distance.

22. The electrocoagulation surgical instrument according to claim 21, characterized in that: The first channel (61) and the port on the opposite side of the second channel (312) have a predetermined distance; The fixing portion (6) is provided with a guide conical surface (66), and the small-diameter end of the guide conical surface (66) is connected to a port of the first hole (61) close to the second hole (312).

23. The electrocoagulation surgical instrument according to claim 21, characterized in that: The fixing part (6) further comprises: Positioning member (62); a fixing screw (63); and A base (64) is provided with the first hole (61) and a side hole (641), the side hole (641) is connected with the first hole (61) and faces the side of the first hole (61), the side hole (641) has a threaded section (6411) and a sliding section (6412) in the axial direction, the sliding section (6412) is adjacent to the first hole (61), and the positioning member (62) is slidably arranged on the sliding section (6412); The fixing screw (63) is configured to penetrate the threaded section (6411) and push the positioning member (62) to move into the first hole (61) to fix the fixing section (542).

24. The electrocoagulation surgical instrument according to claim 23, characterized in that: The body (21) is provided with a window (212), the window (212) passes through a side wall of one side of the first slideway (211), and the length direction of the window (212) is parallel to the axial direction of the first slideway (211); The head of the fixing screw (63) extends out from the window (212), and in the first position and the second position, the fixing screw (63) moves to the edge position in the length direction of the window (212) respectively.

25. The electrocoagulation surgical instrument according to claim 23, characterized in that: The base (64) and the fixing screw (63) are insulating parts; The positioning member (62) comprises a plurality of connecting handles (621) and a sliding body (622) adapted to the sliding section (6412), wherein the plurality of connecting handles (621) are protrudingly arranged on a side of the sliding body (622) facing away from the fixing screw (63); The fixing part (6) further comprises: a plurality of first elastic members (67); and A first electrical contact member (65) is disposed on the base (64) and comprises an electrical contact surface (651), wherein the electrical contact surface (651) is protrudingly disposed in the first hole (61); A plurality of first positioning holes (6413) are provided at the bottom of the side hole (641), the plurality of first positioning holes (6413) are arranged on both sides of the first channel (61), and the plurality of first elastic members (67) are respectively arranged in the plurality of first positioning holes (6413); The fixing screw (63) is screwed into the threaded section (6411), and the tail of the fixing screw (63) pushes the sliding body (622) close to the electrical contact surface (651) to clamp the fixing section (542), and the first electrical contact member (65) is electrically connected to the fixing section (542). At the same time, the multiple connecting handles (621) are correspondingly inserted into the multiple first positioning holes (6413) and abut against the multiple first elastic members (67).

26. The electrocoagulation surgical instrument according to claim 21, characterized in that: The first slideway (211) has a tail port (2111), and the tail port (2111) is located on a side of the first slideway (211) away from the sheath (4); The driving assembly (2) further comprises a blocking member (22), the blocking member (22) being an insulating member and comprising a limiting protrusion, the limiting protrusion being provided with a third hole (221); The fixing section (542) is located in the first hole (61), and the pulling section (543) extends to the outside of the body (21) through the tail port (2111); The blocking member (22) blocks the tail port (2111), the third channel (221) and the first channel (61) extend along the same axis, and at least a portion of the pulling section (543) is telescopically disposed in the third channel (221); In the second position, the limiting protrusion abuts against the fixing portion (6).

27. The electrocoagulation surgical instrument according to claim 21, characterized in that: The connecting portion (3) comprises a first connecting head (32), and the first connecting head (32) is arranged at an end of the rod (31) away from the connecting end (311); The body (21) comprises: The accommodating portion (23) is provided with the first slideway (211); and A second connector (24) protrudes from one side of the accommodating portion (23) and defines a fourth hole (241), and the pulling wire (54) can operably pass through the fourth hole (241) and the first slideway (211); The driving assembly (2) further comprises a first wire (25); The first connector (32) and the second connector (24) are in a connected state, the fourth channel (241) and the first channel (61) extend along the same axis, and one end of the first wire (25) is electrically connected to the first connector (32) and the other end extends to the outside of the body (21).

28. The electrocoagulation surgical instrument according to claim 27, characterized in that: The drive assembly also includes: A second electrical contact (26) is provided with a central through hole (261) sleeved on the pulling wire (54); The second connector (24) defines a fifth hole (242), and the fifth hole (242) is connected to the first slideway (211); The first connector (32) and the second connector (24) are arranged in pairs and are in a connected state, the second electrical contact (26) abuts between the end surface of the rod (31) and the second connector (24), and the central through hole (261) is aligned with the first hole (61) and the fourth hole (241), and the first wire (25) passes through the first slideway (211) and the fifth hole (242). Connected to the second electrical contact (26).

29. The electrocoagulation surgical instrument according to claim 20, characterized in that: The pulling portion (53) further comprises a moving head (531), wherein the moving head (531) is connected to the connecting section (541) and the tail of the first operating arm (51); The sheath portion (4) comprises a second elastic member (41), a second slideway (42), a stop ring surface (43) and a first accommodating hole (44); the first accommodating hole (44) is a through hole; the stop ring surface (43) is located between the second slideway (42) and the first accommodating hole (44); the moving head (531) is slidably disposed in the second slideway (42); and the second elastic member (41) abuts between the moving head (531) and the stop ring surface (43); When the pulling portion (53) is in a free state, the second elastic member (41) pushes the first operating arm (51) away from the second operating arm (52); In the assembled state, at least a portion of the connection end (311) is inserted into the first receiving hole (44).

30. The electrocoagulation surgical instrument according to claim 29, characterized in that: The connecting end (311) comprises an abutting annular surface (3111) and a puncturing head (3112), wherein the puncturing head (3112) is protrudingly disposed in the central area of ​​the abutting annular surface (3111); The sheath part (4) further comprises: An elastic sleeve (45) is arranged on the second slideway (42), the second elastic member (41) abuts against the stop ring surface (43) through the elastic sleeve (45), the elastic sleeve (45) is provided with a tapered hole (451), the small diameter end of the tapered hole (451) is far away from the stop ring surface (43), and the inner diameter of at least part of the tapered hole (451) is smaller than the outer diameter of the puncture head (3112); In the assembled state, the puncture head (3112) is simultaneously inserted into the first receiving hole (44) and the tapered hole (451) until the abutting annular surface (3111) abuts against the sheath portion (4).

31. The electrocoagulation surgical instrument according to claim 30, characterized in that: The rod (31) is a conductive member and comprises a transition section (313) and an opposite end (314), wherein the transition section (313) is located between the connecting end (311) and the opposite end (314); The connecting portion (3) further comprises a first insulating coating layer (33), wherein the first insulating coating layer (33) covers the transition section (313), and the connecting end (311) is exposed outside the first insulating coating layer (33); The sheath portion (4) further comprises a conductor (46) and a second insulating coating layer (47) covering a partial area outside the conductor (46); the second operating arm (52) is arranged on the conductor (46); and the conductor (46) has a mating end surface (461); The mating end surface (461) is exposed outside the second insulating coating layer (47) and abuts against the abutting ring surface (3111).

32. The electrocoagulation surgical instrument according to claim 29, characterized in that: The sheath part (4) further comprises: The conductor (46) has a second accommodating hole (462), the stop ring surface (43) and the first accommodating hole (44), wherein the second accommodating hole (462) has an open end (4621) away from the first accommodating hole (44); and An insulating lining (48), comprising an outer flange (481) and a cylinder (482), wherein the inner wall of the cylinder (482) forms the second slideway (42); The cylinder (482) is disposed in the second accommodating hole (462), and the outer turned edge (481) is clamped on the opening end (4621).

33. The electrocoagulation surgical instrument according to claim 32, characterized in that: The moving part (5) further comprises an insulating spacer block (56), wherein the insulating spacer block (56) is arranged between the first operating arm (51) and the second operating arm (52); The number of the outer turned edges (481) is two and the extending directions are opposite; The conductor (46) comprises two supporting arms (464), wherein the two supporting arms (464) are protruding from the opening end (4621) and are staggered with the two outer turned edges (481); The insulating spacer block (56) has a first hinge hole (B1) and a second hinge hole (B2), the second operating arm (52) has a third hinge hole (B3) and a fourth hinge hole (B4), the first operating arm (51) has a fifth hinge hole (B5) and a sixth hinge hole (B6), the support arm (464) has a seventh hinge hole (B7), and the moving head has an eighth hinge hole (B8); The first hinge hole (B1) and the third hinge hole (B3) are simultaneously hinged to the seventh hinge hole (B7), and the second hinge hole (B1) is The hole (B2) and the fourth hinge hole (B4) are simultaneously hinged to the fifth hinge hole (B5), the eighth hinge hole (B8) is hinged to the sixth hinge hole (B6), and the two outer turned edges (481) correspond to the first operating arm (51) and the second operating arm (52) respectively.

34. The electrocoagulation surgical instrument according to claim 19, characterized in that: The pull line also includes: A conductive core (544) and a third insulating coating (545), wherein the third insulating coating (545) covers the corresponding area between the conductive core (544) and the rod (31), and the corresponding area between the conductive core (544) and the fixing portion (6) is exposed outside the third insulating coating.

35. An electrocoagulation surgical instrument, characterized in that: The electrocoagulation surgical instrument comprises: A driving assembly (2) comprises a connecting portion (3), wherein the connecting portion (3) comprises a hollow rod (31), and the rod (31) comprises a connecting end (311); and An electrocoagulation assembly (1) comprises a sheath portion (4), a pulling portion (53), and a moving portion (5) arranged on the sheath portion (4), wherein the moving portion (5) comprises a first operating arm (51) and a second operating arm (52); The pulling portion (53) is configured such that one end is connected to the moving portion (5), and the other end can operably pass through the rod (31) and pull the sheath portion (4) to move toward the rod (31) until the connecting end (311) is detachably connected to the sheath portion (4), and the pulling portion (53) is used to drive the first operating arm (51) to approach the second operating arm (52); The moving part (5) is configured such that the first operating arm (51) and the second operating arm (52) are connected to the rod (31) through the sheath part (4), and / or the first operating arm (51) and the second operating arm (52) are connected to the pulling part (53).

36. The electrocoagulation surgical instrument according to claim 35, characterized in that: The pulling portion (53) is configured such that one end is connected to the first operating arm (51), the second operating arm (52) is arranged on the sheath portion (4), and the first operating arm (51) and the second operating arm (52) are rotationally connected and electrically contacted; The pulling portion (53) includes a pulling wire (54), the pulling wire (54) includes a connecting section (541) and a fixing section (542), and the connecting section (541) is close to the first operating arm (51); The driving assembly (2) further comprises a fixing portion (6), wherein the fixing portion (6) is arranged on a side of the connecting portion (3) away from the electrocoagulation assembly (1) and has a first hole (61); The fixing section (542) passes through the rod (31) and extends into the first hole (61) and is fixedly connected to the fixing portion (6); the fixing portion (6) can be operably moved closer to or farther away from the connecting portion (3) to drive the first operating arm (51) to move relative to the second operating arm (52).

37. The electrocoagulation surgical instrument according to claim 36, characterized in that: The first channel (61) is a through hole; The pulling wire (54) further includes a pulling section (543); The driving assembly (2) further comprises a body (21); An end of the connecting portion (3) away from the connecting end (311) is connected to the main body (21); The electrocoagulation surgical instrument has a spliced ​​state, in which the pulling section (543) extends from one end of the first channel (61) away from the connecting section (541), and pulls the sheath (4) to assemble with the connecting end (311), and the fixing section (542) is located in the first channel (61).

38. The electrocoagulation surgical instrument according to claim 37, characterized in that: The connecting portion (3) comprises a first connecting head (32), the first connecting head (32) being arranged at an end of the rod (31) away from the connecting end (311), the rod (31) being provided with a second hole (312), the second hole (312) being a through hole; The body (21) comprises: The accommodating portion (23) is provided with a first slideway (211), the fixing portion (6) is slidably arranged on the first slideway (211), the fixing portion (6) has a first position and a second position in the first slideway (211), and in the first position, the fixing portion (6) The first slideway (211) is located at one end close to the sheath (4), and the first hole (61) and the second hole (312) extend along the same axis. In the second position, the fixing portion (6) is located at one end of the first slideway (211) away from the sheath (4), and the first operating arm (51) is close to the second operating arm (52); and The second connector (24) is a conductive member and has a fourth hole (241), and the pulling wire (54) can operably pass through the fourth hole (241) and the first slideway (211); The first connecting head (32) is fixedly connected to the second connecting head (24), and the second connecting head (24) is connected to the sheath (4) via the rod (31).

39. The electrocoagulation surgical instrument according to claim 38, characterized in that: The second connector (24) is provided with a positioning groove (243), and the positioning groove (243) is recessed from the outer side of the second connector (24) toward the fourth hole (241); The driving assembly (2) further comprises a shell (291) and a conductive ring (281); the conductive ring (281) is arranged in the positioning groove (243) and is electrically connected to the second connector (24); at least a portion of the second connector (24) is arranged on the inner side of the shell (291); and the shell (291) is an insulating member.

40. The electrocoagulation surgical instrument according to claim 39, characterized in that: The driving assembly (2) further comprises a conductive arm (282), one end of which is connected to the conductive ring (281), and the other end of which extends to the outside of the shell (291).

41. The electrocoagulation surgical instrument according to claim 38, characterized in that: The pulling portion (53) further comprises a moving head (531), wherein the moving head (531) is connected to the connecting section (541) and the tail of the first operating arm (51); The sheath portion (4) comprises a second elastic member (41), a second slideway (42), a stop ring surface (43) and a first accommodating hole (44); the first accommodating hole (44) is a through hole; the stop ring surface (43) is located between the second slideway (42) and the first accommodating hole (44); the moving head (531) is slidably disposed in the second slideway (42); and the second elastic member (41) abuts between the moving head (531) and the stop ring surface (43); When the pulling portion (53) is in a free state, the second elastic member (41) pushes the first operating arm (51) away from the second operating arm (52); In the assembled state, at least a portion of the connection end (311) is inserted into the first receiving hole (44).

42. The electrocoagulation surgical instrument according to claim 41, characterized in that: The connecting end (311) comprises an abutting annular surface (3111) and a plug connector, wherein the plug connector is protrudingly arranged at a central area of ​​the abutting annular surface (3111); The sheath part (4) further comprises: An elastic sleeve (45) is arranged on the second slideway (42), the second elastic member (41) abuts against the stop ring surface (43) through the elastic sleeve (45), the elastic sleeve (45) is provided with a tapered hole (451), the small diameter end of the tapered hole (451) is far away from the stop ring surface (43), and the inner diameter of at least part of the tapered hole (451) is smaller than the outer diameter of the plug connector; In the assembled state, the plug connector is inserted into the first receiving hole (44) and the tapered hole (451) simultaneously until the abutting annular surface (3111) abuts against the sheath portion (4).

43. The electrocoagulation surgical instrument according to claim 42, characterized in that: The rod (31) is a conductive member and comprises a transition section (313) and an opposite end (314); the transition section (313) is located between the connecting end (311) and the opposite end (314); and the first connecting head (32) is arranged at the opposite end (314); The connecting portion (3) further comprises a first insulating coating layer (33), wherein the first insulating coating layer (33) covers the transition section (313), and the connecting end (311) is exposed outside the first insulating coating layer (33); The sheath portion (4) further comprises a conductor (46) and a second insulating coating layer (47) covering a partial area outside the conductor (46); the second operating arm (52) is arranged on the conductor (46); and the conductor (46) has a mating end surface (461); The mating end surface (461) is exposed outside the second insulating coating layer (47) and abuts against the abutting ring surface (3111).

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