Conductive structure and laparoscopic surgical instrument

Abstract

The utility model relates to the technical field of medical apparatus and instruments, and discloses a conductive structure and a laparoscopic surgical instrument, the conductive structure comprises a handle shell, the inner side peripheral wall of the handle shell is enclosed to form a mounting cavity, and a lead is arranged in the mounting cavity; the rotating shaft body is rotationally arranged in the mounting cavity; the elastic piece is made of an elastic conductive material, the elastic piece is arranged between the outer side peripheral wall of the rotating shaft body and the inner side peripheral wall of the handle shell, the elastic piece and the handle shell are relatively fixed, the elastic piece is electrically connected with the wire, and the elastic piece and the rotating shaft body are always kept in elastic abutting connection. According to the conductive structure provided by the utility model, the elastic sheet can be electrically connected with the rotating shaft body all the time in the circumferential rotation process of the rotating shaft body, thereby avoiding direct connection between the lead and the rotating shaft body, and further avoiding torsion damage of the lead.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a conductive structure and a laparoscopic surgical instrument. Background Art

[0002] Laparoscopic minimally invasive surgery usually involves manipulating laparoscopic minimally invasive surgical instruments outside the abdominal cavity to perform operations such as exploration, electrocoagulation, hemostasis, tissue separation and incision, and suturing of diseased tissues in the abdominal cavity.

[0003] Existing laparoscopic minimally invasive surgical instruments, as shown in the patent document with publication number CN116999186A, disclose a circumferential positioning structure and a laparoscopic surgical instrument having the same, wherein a first positioning corrugated portion is at least partially circumferentially arranged on the outer circumferential wall of the rotating shaft body, and a second positioning corrugated portion is arranged on the inner circumferential wall of the open clamping ring. The second positioning corrugated portion can elastically interfere with and fully engage with the first positioning corrugated portion, thereby performing circumferential positioning of the rotating shaft body at any angle during the circumferential rotation of the rotating shaft body relative to the base.

[0004] However, since the distal clamp and the proximal handle of a laparoscopic minimally invasive surgical instrument usually need to be electrically connected, the wire is easily twisted and damaged during the circumferential rotation of the shaft body. Utility Model Content

[0005] In view of this, the utility model provides a conductive structure and a laparoscopic surgical instrument to solve the problem that the guide wire is easily twisted and damaged during the circumferential rotation of the rotating shaft body of the existing laparoscopic minimally invasive surgical instrument.

[0006] In a first aspect, the utility model provides a conductive structure, comprising:

[0007] The handle housing has an inner peripheral wall enclosing a mounting cavity, in which a wire is built;

[0008] The shaft body is rotatably disposed in the installation cavity;

[0009] The spring sheet is made of elastic conductive material, and is arranged between the outer peripheral wall of the shaft body and the inner peripheral wall of the handle shell. The spring sheet and the handle shell are relatively fixed, and the spring sheet is electrically connected to the wire. The spring sheet and the shaft body always maintain elastic contact.

[0010] Beneficial effect: The conductive structure provided by the utility model electrically connects the spring sheet to the wire by fixing a spring sheet between the outer circumferential wall of the rotating shaft body and the inner circumferential wall of the handle shell. The spring sheet is made of elastic conductive material, so that the spring sheet and the rotating shaft body are always elastically abutted by the elastic restoring force of the spring sheet itself, thereby ensuring that the spring sheet and the rotating shaft body are always electrically connected during the circumferential rotation of the rotating shaft body, avoiding direct connection between the wire and the rotating shaft body, and further avoiding torsional damage to the wire.

[0011] In an optional embodiment, the conductive structure further includes:

[0012] A first cross shaft is hinged to the rotating shaft body, and the first cross shaft is electrically connected to the rotating shaft body;

[0013] A second cross axis is hinged to the first cross axis, and the second cross axis is electrically connected to the first cross axis;

[0014] The conductive tube is arranged at one end of the second cross axis away from the first cross axis along the third direction. One end of the conductive tube along the third direction is electrically connected to the second cross axis, and the other end is suitable for being electrically connected to the actuator of the distal head.

[0015] Beneficial effect: The spring sheet always maintains elastic abutment with the shaft body, thereby realizing electrical connection between the wire and the shaft body. By setting a first cross axis and a second cross axis between the shaft body and the conductive tube, the first cross axis and the second cross axis are both made of conductive material, thereby realizing both mechanical coupling between the shaft body and the conductive tube and electrical connection between the shaft body and the conductive tube, thereby realizing electrical conduction between the wire and the actuator of the distal head.

[0016] In an optional embodiment, a positioning portion is provided on the inner peripheral wall of the handle housing; the spring sheet includes a fixing portion; and the positioning portion is connected to the fixing portion.

[0017] Beneficial effect: By connecting the positioning part with the fixing part, the relative fixation between the spring sheet and the handle shell is achieved, avoiding the spring sheet from being offset between the outer circumferential wall of the shaft body and the inner circumferential wall of the handle shell, ensuring that the spring sheet and the outer circumferential wall of the shaft body always maintain elastic contact, thereby ensuring that the spring sheet and the shaft body always maintain electrical conduction.

[0018] In an optional embodiment, a first positioning column and a second positioning column are provided on the positioning portion; a first through hole and a second through hole are opened on the fixing portion; the first positioning column is coaxially arranged with the first through hole, and the second positioning column is coaxially arranged with the second through hole to position the spring piece.

[0019] Beneficial effect: The spring sheet can be stably fixed between the handle shell and the shaft body under the action of its own elastic restoring force without displacement, which can ensure that the spring sheet and the outer peripheral wall of the shaft body are always in elastic contact, thereby ensuring that the spring sheet and the shaft body are always electrically conductive, and simplify the workpiece preparation and assembly process, eliminating the tapping and screwing processes.

[0020] In an optional embodiment, the spring sheet further includes a first bending portion, the first bending portion is arranged at two ends of the fixing portion in the first direction, the first bending portion is arranged at an angle with the fixing portion, and the first bending portion is suitable for being fixed by welding with the wire;

[0021] The spring sheet also includes a second bending portion, which is arranged at one end of the first bending portion away from the fixing portion along the second direction. The second bending portion is arranged at an angle to the first bending portion, and the second bending portion is suitable for always maintaining elastic contact with the rotating shaft body.

[0022] Beneficial effect: Since the spring sheet has a certain elasticity, and at the same time, the two second bent parts of the spring sheet produce a certain pre-deformation due to the abutment with the outer peripheral wall of the shaft body during assembly, the second bent parts always maintain elastic abutment with the shaft body under the action of the elastic restoring force, ensuring that the spring sheet and the shaft body always maintain electrical conduction.

[0023] In an optional embodiment, a first limiting portion is further provided on the inner circumferential wall of the handle shell, the first limiting portion is provided at both ends of the positioning portion in the first direction, the first limiting portion abuts against the first bending portion, and the first limiting portion is suitable for limiting the first bending portion.

[0024] Beneficial effect: The first bending portion is limited by the first limiting portion to prevent the first bending portion from being excessively opened relative to the positioning portion, thereby ensuring that the second bending portion and the shaft body always maintain elastic contact, thereby ensuring that the spring sheet and the shaft body always maintain electrical conduction.

[0025] In an optional embodiment, an abutting arc surface is provided on the outer peripheral wall of the rotating shaft body, and the abutting arc surface is suitable for a smooth transition with the second bending portion.

[0026] Beneficial effect: The abutting arc surface smoothly transitions with the second bent portion, which is conducive to ensuring that the spring sheet and the shaft body always maintain stable electrical conduction.

[0027] In an optional embodiment, a second limiting portion is further provided on the inner peripheral wall of the handle housing, and the second limiting portion is suitable for limiting the wire along the first direction.

[0028] Beneficial effect: By arranging the second limiting portion on the inner peripheral wall of the handle housing, the wire is prevented from deviating along the first direction, thereby avoiding interference between the wire and the rotating shaft body.

[0029] In an optional embodiment, the conductive structure further includes a base, which is fixedly disposed in the mounting cavity, and the base is suitable for positioning the rotating shaft body;

[0030] A third limiting portion is arranged on the base, and the third limiting portion is suitable for limiting the wire along the second direction.

[0031] Beneficial effect: By arranging the third limiting portion on the base, the wire is limited along the second direction, thereby preventing the wire from deviating along the second direction.

[0032] In a second aspect, the utility model further provides a laparoscopic surgical instrument, comprising: a laparoscopic surgical instrument body, and the conductive structure as described above.

[0033] Beneficial effects: The laparoscopic surgical instrument of the second aspect includes the conductive structure of the first aspect, and therefore, the laparoscopic surgical instrument of the second aspect includes all the beneficial effects of the conductive structure of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 This is a schematic diagram of an exploded structure of a conductive structure according to an embodiment of the utility model;

[0036] Figure 2 This is a schematic diagram of a three-dimensional structure of a conductive structure of an embodiment of the utility model after the handle housing is hidden;

[0037] Figure 3 A schematic diagram of the conductive principle of a conductive structure according to an embodiment of the utility model;

[0038] Figure 4 A schematic diagram of the explosion structure of a handle housing and a shrapnel of a conductive structure according to an embodiment of the utility model;

[0039] Figure 5 This is a schematic diagram of the assembly structure of a handle housing and a spring sheet of a conductive structure according to an embodiment of the utility model;

[0040] Figure 6 This is a schematic diagram of the limiting position of the wire by the second limiting portion of the handle housing of a conductive structure according to an embodiment of the utility model;

[0041] Figure 7The present invention is a schematic diagram of the limiting effect of the third limiting portion of the base of a conductive structure on the wire according to an embodiment of the present utility model.

[0042] Description of reference numerals:

[0043] 10. handle housing; 11. positioning portion; 111. first positioning column; 112. second positioning column; 12. first limiting portion; 13. second limiting portion;

[0044] 20. Wire;

[0045] 30. Rotating shaft body; 31. Abutting arc surface;

[0046] 40, spring piece; 41, fixing portion; 411, first through hole; 412, second through hole; 42, first bending portion; 43, second bending portion;

[0047] 51, first cross axis; 52, second cross axis;

[0048] 60. Conductive tube;

[0049] 70. base; 71. third limiting portion. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0051] Combine the following Figures 1 to 7 , describing an embodiment of the utility model.

[0052] According to an embodiment of the present utility model, on the one hand, a conductive structure is provided, comprising:

[0053] The handle housing 10 has an inner peripheral wall enclosing a mounting cavity, in which a wire 20 is placed, and a proximal end of the wire 20 is suitable for being electrically connected to an external power source;

[0054] The shaft body 30 is made of a conductive material and is rotatably disposed in the mounting cavity;

[0055] The spring piece 40 is made of elastic conductive material and is arranged between the outer circumferential wall of the shaft body 30 and the inner circumferential wall of the handle shell 10. The spring piece 40 is relatively fixed to the handle shell 10, and is electrically connected to the wire 20. The spring piece 40 and the shaft body 30 always maintain elastic contact.

[0056] Furthermore, the spring sheet 40 can be a metal spring sheet. The spring sheet 40 has a certain elasticity. During the assembly process, the spring sheet 40 is forced to abut against the shaft body 30 and cause a certain pre-deformation of the spring sheet 40. Therefore, during the circumferential rotation of the shaft body 30, the spring sheet 40 always maintains abutment with the shaft body 30 under the action of its own elastic restoring force. This neither affects the circumferential rotation of the shaft body 30 nor ensures that the spring sheet 40 and the shaft body 30 always maintain electrical connection.

[0057] The conductive structure provided in this embodiment is such that a spring clip 40 is fixedly arranged between the outer circumferential wall of the shaft body 30 and the inner circumferential wall of the handle shell 10, so that the spring clip 40 is electrically connected to the wire 20. The spring clip 40 is made of elastic conductive material, so that the spring clip 40 and the shaft body 30 are always elastically abutted by the elastic restoring force of the spring clip 40 itself, thereby ensuring that the spring clip 40 and the shaft body 30 are always electrically connected during the circumferential rotation of the shaft body 30, avoiding direct connection between the wire 20 and the shaft body 30, and further avoiding torsional damage to the wire 20.

[0058] In some embodiments, please combine Figure 2 and Figure 3 As shown, the conductive structure also includes:

[0059] A first cross shaft 51 is hinged to the shaft body 30 . The first cross shaft 51 is made of a conductive material and is electrically connected to the shaft body 30 .

[0060] The second cross shaft 52 is hinged to the first cross shaft 51 . The second cross shaft 52 is made of a conductive material. The second cross shaft 52 is electrically connected to the first cross shaft 51 .

[0061] The conductive tube 60 can be made of metal material. The conductive tube 60 is arranged at one end of the second cross axis 52 along the third direction away from the first cross axis 51. One end of the conductive tube 60 along the third direction is electrically connected to the second cross axis 52, and the other end is suitable for being electrically connected to the actuator of the distal head.

[0062] It should be noted that, for the sake of better understanding, the terms "proximal" and "distal" are defined from the perspective of a doctor (or other surgeon). Therefore, the term "proximal" is used to indicate the side or end of the device or the portion thereof that is closest to the external body wall and / or the surgeon, while the term "distal" refers to the side or end of the structure in the relative direction to the external body wall and / or the surgeon. The conductive structure of the utility model and the laparoscopic surgical instrument having the conductive structure can be applied to application scenarios such as electrocoagulation, hemostasis, tissue separation and incision, and suturing of intra-abdominal lesions. Depending on the different surgical application scenarios, the actuator of the distal head of the laparoscopic surgical instrument of the utility model can be a clamp, a separation forceps, or other actuators such as scissors, thereby forming special laparoscopic minimally invasive surgical instruments with various functions, which can be adjusted according to actual needs and are not limited to the situation in this embodiment.

[0063] In this embodiment, see Figure 3 As shown, the spring sheet 40 always maintains elastic contact with the shaft body 30, thereby realizing the electrical connection between the wire 20 and the shaft body 30. By setting a first cross axis 51 and a second cross axis 52 between the shaft body 30 and the conductive tube 60, and the first cross axis 51 and the second cross axis 52 are both made of conductive materials, it is possible to realize both the mechanical coupling of the shaft body 30 and the conductive tube 60 and the electrical connection between the shaft body 30 and the conductive tube 60, thereby realizing the electrical conduction between the wire 20 and the actuator of the distal head.

[0064] In some embodiments, please combine Figure 4 and Figure 5 As shown, a positioning portion 11 is provided on the inner peripheral wall of the handle housing 10 ; the spring piece 40 includes a fixing portion 41 ; and the positioning portion 11 is connected to the fixing portion 41 .

[0065] Optionally, the positioning portion 11 and the fixing portion 41 may be fixedly connected by bolts and / or screws.

[0066] In this embodiment, the positioning portion 11 is connected to the fixing portion 41 to achieve relative fixation between the spring piece 40 and the handle housing 10, thereby preventing the spring piece 40 from being offset between the outer circumferential wall of the shaft body 30 and the inner circumferential wall of the handle housing 10, ensuring that the spring piece 40 and the outer circumferential wall of the shaft body 30 always maintain elastic contact, thereby ensuring that the spring piece 40 and the shaft body 30 always maintain electrical conduction.

[0067] In some embodiments, please combine Figure 4 and Figure 5As shown, the positioning portion 11 is provided with a first positioning column 111 and a second positioning column 112; the fixing portion 41 is provided with a first through hole 411 and a second through hole 412; the first positioning column 111 is coaxially arranged with the first through hole 411, and the second positioning column 112 is coaxially arranged with the second through hole 412 to position the spring piece 40.

[0068] It should be noted that, by providing the first positioning post 111 and the second positioning post 112 on the positioning portion 11, during the assembly process, the first positioning post 111 is inserted into the first through hole 411, and the second positioning post 112 is inserted into the second through hole 412. At this time, the spring piece 40 can only move along the axial direction of the first positioning post 111 and / or the second positioning post 112. Since the spring piece 40 itself needs to produce a certain pre-deformation when it abuts against the shaft body 30 during the assembly process, the shaft body 30 can abut against the spring piece 40. The sheet 40 is further limited, thereby blocking the axial movement of the spring sheet 40 along the first positioning column 111 and / or the second positioning column 112; at the same time, due to the certain pre-deformation of the spring sheet 40, the spring sheet 40 can be stably fixed between the handle shell 10 and the shaft body 30 under the action of its own elastic restoring force without offset, which can ensure that the spring sheet 40 and the outer circumferential wall of the shaft body 30 always maintain elastic abutment, thereby ensuring that the spring sheet 40 and the shaft body 30 always maintain electrical conduction, and simplify the workpiece preparation and assembly process, eliminating the tapping and screwing processes.

[0069] Furthermore, the positioning portion 11 and the first positioning column 111 and the second positioning column 112 are integrally formed with the handle housing 10 .

[0070] In some embodiments, please combine Figure 4 and Figure 5 As shown, the spring piece 40 further includes a first bending portion 42, which is disposed at both ends of the fixing portion 41 in the first direction, and the first bending portion 42 is disposed at an angle to the fixing portion 41, and the first bending portion 42 is suitable for being welded and fixed to the wire 20;

[0071] The spring piece 40 also includes a second bending portion 43, which is arranged at one end of the first bending portion 42 away from the fixing portion 41 along the second direction. The second bending portion 43 is arranged at an angle to the first bending portion 42, and is suitable for always maintaining elastic contact with the shaft body 30.

[0072] Furthermore, the second bending portion 43 and the first bending portion 42 are arranged at an acute angle.

[0073] In this embodiment, please combine Figure 2 , Figure 4 and Figure 5As shown, since the spring sheet 40 has a certain elasticity, and at the same time, the two second bent portions 43 of the spring sheet 40 produce a certain pre-deformation due to the abutment with the outer peripheral wall of the shaft body 30 during assembly, the second bent portions 43 always maintain elastic abutment with the shaft body 30 under the action of the elastic restoring force, ensuring that the spring sheet 40 and the shaft body 30 always maintain electrical conduction.

[0074] In some embodiments, please combine Figure 4 and Figure 5 As shown, a first limiting portion 12 is also provided on the inner peripheral wall of the handle housing 10 , and the first limiting portion 12 is provided at both ends of the first direction of the positioning portion 11 , and the first limiting portion 12 abuts against the first bending portion 42 , and the first limiting portion 12 is suitable for limiting the first bending portion 42 .

[0075] In this embodiment, the first bending portion 42 is limited by the first limiting portion 12 to prevent the first bending portion 42 from excessively opening relative to the positioning portion 11, thereby ensuring that the second bending portion 43 and the shaft body 30 always maintain elastic contact, thereby ensuring that the spring sheet 40 and the shaft body 30 always maintain electrical conduction.

[0076] In some embodiments, see Figure 2 As shown, an abutting arc surface 31 is provided on the outer peripheral wall of the shaft body 30 , and the abutting arc surface 31 is suitable for smooth transition with the second bending portion 43 , which is beneficial to ensure that the spring piece 40 and the shaft body 30 always maintain stable electrical conduction.

[0077] In some embodiments, see Figure 6 As shown, a second limiting portion 13 is further provided on the inner peripheral wall of the handle housing 10 , and the second limiting portion 13 is suitable for limiting the wire 20 along the first direction.

[0078] In this embodiment, a second limiting portion 13 is provided on the inner peripheral wall of the handle housing 10 , thereby preventing the wire 20 from deviating along the first direction, thereby avoiding interference between the wire 20 and the shaft body 30 .

[0079] In some embodiments, see Figure 7 As shown, the conductive structure further includes a base 70, which is fixedly disposed in the mounting cavity, and the base 70 is suitable for positioning the rotating shaft body 30;

[0080] A third limiting portion 71 is disposed on the base 70 , and the third limiting portion 71 is suitable for limiting the wire 20 along the second direction.

[0081] Furthermore, the base 70 is coaxially arranged with the rotating shaft body 30 , and a bearing is built into the base 70 so as to be rotatably connected with the rotating shaft body 30 .

[0082] In this embodiment, the third limiting portion 71 is provided on the base 70 to limit the wire 20 along the second direction, thereby preventing the wire 20 from deviating along the second direction.

[0083] According to an embodiment of the present utility model, on the other hand, a laparoscopic surgical instrument is provided, comprising: a laparoscopic surgical instrument body, and the conductive structure as described above.

[0084] The laparoscopic surgical instrument in the present embodiment includes the above-mentioned conductive structure, and therefore, the laparoscopic surgical instrument in the present embodiment includes all the beneficial effects of the above-mentioned conductive structure.

[0085] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A conductive structure, characterized in that: include: A handle housing (10) has an inner peripheral wall enclosing a mounting cavity, wherein a wire (20) is housed in the mounting cavity; A rotating shaft body (30) is rotatably disposed in the mounting cavity; The spring piece (40) is made of an elastic conductive material. The spring piece (40) is arranged between the outer peripheral wall of the rotating shaft body (30) and the inner peripheral wall of the handle shell (10). The spring piece (40) and the handle shell (10) are relatively fixed. The spring piece (40) is electrically connected to the wire (20). The spring piece (40) and the rotating shaft body (30) always maintain elastic contact.

2. The conductive structure according to claim 1, wherein: The conductive structure further includes: A first cross shaft (51) is hinged to the rotating shaft body (30), and the first cross shaft (51) is electrically connected to the rotating shaft body (30); A second cross shaft (52) is hinged to the first cross shaft (51), and the second cross shaft (52) is electrically connected to the first cross shaft (51); A conductive tube (60) is provided at one end of the second cross axis (52) away from the first cross axis (51) along a third direction, wherein one end of the conductive tube (60) along the third direction is electrically connected to the second cross axis (52), and the other end is suitable for being electrically connected to the actuator of the distal head.

3. The conductive structure according to claim 1, wherein: A positioning portion (11) is provided on the inner peripheral wall of the handle housing (10); the spring piece (40) includes a fixing portion (41); and the positioning portion (11) is connected to the fixing portion (41).

4. The conductive structure according to claim 3, wherein: The positioning portion (11) is provided with a first positioning column (111) and a second positioning column (112); the fixing portion (41) is provided with a first through hole (411) and a second through hole (412); the first positioning column (111) and the first through hole (411) are coaxially arranged, and the second positioning column (112) and the second through hole (412) are coaxially arranged, so as to position the spring piece (40).

5. The conductive structure according to claim 3, wherein: The spring piece (40) further includes a first bending portion (42), the first bending portion (42) being arranged at both ends of the fixing portion (41) in a first direction, the first bending portion (42) being arranged at an angle to the fixing portion (41), and the first bending portion (42) being suitable for being welded and fixed to the wire (20); The spring piece (40) further comprises a second bending portion (43), the second bending portion (43) being arranged at one end of the first bending portion (42) away from the fixing portion (41) along the second direction, the second bending portion (43) being arranged at an angle to the first bending portion (42), and the second bending portion (43) being adapted to always maintain elastic contact with the rotating shaft body (30).

6. The conductive structure according to claim 5, characterized in that A first limiting portion (12) is further provided on the inner peripheral wall of the handle housing (10), and the first limiting portion (12) is provided at both ends of the positioning portion (11) in the first direction, and the first limiting portion (12) abuts against the first bending portion (42), and the first limiting portion (12) is suitable for limiting the first bending portion (42).

7. The conductive structure according to claim 5, characterized in that An abutting arc surface (31) is provided on the outer peripheral wall of the rotating shaft body (30), and the abutting arc surface (31) is suitable for smoothly transitioning with the second bending portion (43).

8. The conductive structure according to any one of claims 1 to 7, characterized in that: A second limiting portion (13) is also provided on the inner peripheral wall of the handle housing (10), and the second limiting portion (13) is suitable for limiting the position of the wire (20) along the first direction.

9. The conductive structure according to any one of claims 1 to 7, characterized in that: The conductive structure further includes a base (70), the base (70) being fixedly disposed in the installation cavity, and the base (70) being suitable for positioning the rotating shaft body (30); A third limiting portion (71) is provided on the base (70), and the third limiting portion (71) is suitable for limiting the wire (20) along the second direction.

10. A laparoscopic surgical instrument, characterized in that: include: A laparoscopic surgical instrument body, and a conductive structure as claimed in any one of claims 1 to 9.

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