Wire-driven fixing structure and surgical instrument

Abstract

The utility model discloses a wire drive fixing structure and a surgical instrument, and relates to the field of medical instruments. The wire drive fixing structure comprises a sleeve piece and a connecting component, the connecting component is fixedly connected with the sleeve piece in an embedded mode, two through holes which are formed in groups at intervals are formed in the connecting component, and an assembling groove is formed in the connecting component. According to the utility model, the driving wire which is penetrated and assembled is jointly fixed and limited through the external member and the connecting member; specifically, the through hole and the assembling groove on the connecting member are provided with at least part of assembling space for connecting and assembling the driving wire; in the assembling process, the two ends of the driving wire can firstly penetrate through the two through holes in a sliding mode, and then the portion, between the two through holes, of the driving wire is connected into the assembling groove; afterwards, the sleeve piece and the connecting component are fixed, so that the fixing of the driving wire is completed; according to the fixing mode, the structure is simple, the fixing effect is stable, the driving wire meeting the wire drive use requirement can be arranged in the limited size of the surgical instrument, the structure is compact, and practicability is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, concretely relates to a wire drive fixing structure and surgical instrument. BACKGROUND

[0002] Nickel titanium is an alloy wire with shape memory, corrosion resistance, good biocompatibility and superior elasticity, which is widely used in various medical components, including reinforced winding and braiding of catheter shafts and tubes, shaped recovery baskets, braided and shaped stents, and many other uses. When receiving an electrical signal or being heated in other ways, the nickel titanium alloy wire will shorten. After the electrical signal disappears or cools down, the nickel titanium alloy wire will return to its original length. Due to the shape memory function of the nickel titanium alloy wire, it is an excellent choice for many in-vivo applications, including braided stents and catheter reinforcement.

[0003] At present, nickel titanium alloy wire can be used as wire drive rope material in surgical instruments, but the current assembly and fixing method of nickel titanium alloy wire is relatively complex, which easily occupies too much space inside the surgical instrument; it is a problem that needs to be solved by those skilled in the art to arrange nickel titanium alloy wire that meets the use requirements of wire drive in the limited volume inside the surgical instrument. SUMMARY

[0004] To solve the technical problems in the background art, the utility model provides a wire drive fixing structure, which comprises:

[0005] a sleeve set;

[0006] a coupling member fixedly engaged with the sleeve set, at least two through holes arranged in groups and at intervals on the coupling member, and an assembly groove provided on the coupling member and in communication with any of the through holes to form an assembly space for at least partially accommodating the assembly drive wire.

[0007] As a preferred technical solution, the coupling member comprises a coupling seat and a coupling sleeve fixedly connected to each other, the coupling sleeve is arranged on the side of the coupling seat close to the sleeve set, and the sleeve set is installed outside the coupling sleeve in a sleeved manner;

[0008] The two through holes are arranged on the coupling seat in an interval, and the assembly groove is arranged on the outer circumferential side of the coupling sleeve.

[0009] As a preferred technical solution, the sleeve set comprises a cylinder wall portion, the cylinder wall portion is arranged in abutment with the coupling seat, and the assembly groove and the two through holes are in communication through the inner cavity of the cylinder wall portion (11).

[0010] As a preferred technical solution, the sleeve set further comprises a crimping portion, the crimping portion is arranged to extend along the axial direction of the inner wall of the cylinder wall portion to at least partially cover the drive wire assembled in the assembly groove.

[0011] As a preferred technical solution, the coupling sleeve further comprises a sleeve part, the sleeve part is sleeved on the outer circumferential side of the sleeve, and the sleeve part and the sleeve are provided in an interference fit, a crimping, a welding or an adhesive manner.

[0012] As a preferred technical solution, the sleeve part is provided in a hollow cylindrical structure or a hollow square column structure.

[0013] As a preferred technical solution, the coupling seat is provided with a coupling groove, the coupling groove is recessed at the end face of the coupling seat facing the sleeve;

[0014] The coupling sleeve is provided with a coupling protrusion, any coupling protrusion is connected on the outer side of the sleeve part, and the coupling protrusion is correspondingly installed in the coupling groove;

[0015] The coupling protrusion is provided with a plurality of coupling protrusions, the coupling protrusions are annularly distributed on the outer circumferential side of the sleeve part near the end part of the coupling seat; the coupling protrusion and the coupling groove are provided in an interference fit, a crimping, a welding or an adhesive manner.

[0016] As a preferred technical solution, the assembly groove is provided in an arc-shaped groove body or a corrugated segment groove body.

[0017] As a preferred technical solution, the through hole is provided with four through holes, the assembly groove is provided with two assembly grooves, and the four through holes and the two assembly grooves are suitable for penetrating and assembling two driving lines; and / or

[0018] The assembly groove has a first end part and a second end part, and the first end part and the second end part correspondingly extend and communicate with the two through holes, respectively.

[0019] The utility model also provides a surgical instrument, including driving line and the line drive fixed structure of above, the driving line is fixedly connected in the line drive fixed structure and is penetrated.

[0020] The technical scheme provided by the utility model has the following advantages:

[0021] The line drive fixed structure provided by the utility model comprises a sleeve and a coupling member, the coupling member is fixedly embedded and connected with the sleeve, two through holes arranged in groups are arranged on the coupling member, an assembly groove is arranged on the coupling member, the assembly groove can be communicated with any through hole, and an assembly space for penetrating and assembling the driving line is formed.

[0022] The line drive fixing structure of the structure is fixed by the sleeve set and the connecting member to limit and fix the drive line assembled and arranged, and at least part of the assembly space of the drive line is arranged by the through hole and the assembly groove on the connecting member; during assembly, the two ends of the drive line can be first slid through the two through holes, then the drive line between the two through holes is connected in the assembly groove, and the connection position of the drive line is adjusted to adapt to the assembly space, and then the sleeve set is fixed with the connecting member to complete the fixing of the drive line; the fixing method has the advantages of simple structure, stable fixing effect, compact structure, and good practicability, and the drive line meeting the use requirement of the line drive can be arranged in the limited volume of the surgical instrument. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Figure 1 The structure diagram of the line drive fixing structure provided by the present application is shown in the figure.

[0025] Figure 2 The exploded view of the line drive fixing structure provided by the present application is shown in the figure.

[0026] Figure 3 The structure diagram of the sleeve set and the drive line in the line drive fixing structure provided by the present application is shown in the figure.

[0027] Figure 4 The structure diagram of the connecting member in the line drive fixing structure provided by the present application is shown in the figure.

[0028] Figure 5 The assembly diagram of the connecting member and the drive line in the line drive fixing structure provided by the present application is shown in the figure.

[0029] Figure 6 The structure diagram of the connecting seat in the line drive fixing structure provided by the present application is shown in the figure.

[0030] Figure 7 The structure diagram of the connecting sleeve in the line drive fixing structure provided by the present application is shown in the figure.

[0031] Figure 8 The structure diagram of one of the deformation embodiments of the connecting member in the line drive fixing structure provided by the present application is shown in the figure.

[0032] Figure 9The structure schematic view of the connecting sleeve in the second deformation embodiment of the connecting member in the wire driving fixing structure is provided in the utility model.

[0033] Figure 10 The structure schematic view of the connecting sleeve in the second deformation embodiment of the connecting member in the wire driving fixing structure is provided in the utility model.

[0034] Figure 11 The structure schematic view of the connecting sleeve in the second deformation embodiment of the connecting member in the wire driving fixing structure is provided in the utility model.

[0035] Figure 12 The structure schematic view of the connecting sleeve in the second deformation embodiment of the connecting member in the wire driving fixing structure is provided in the utility model.

[0036] Figure 13 The structure schematic view of the connecting sleeve in the second deformation embodiment of the connecting member in the wire driving fixing structure is provided in the utility model.

[0037] Figure 14 The structure schematic view of the connecting sleeve in the second deformation embodiment of the connecting member in the wire driving fixing structure is provided in the utility model.

[0038] Mark explanation:

[0039] 1 - sleeve; 11 - barrel wall part; 12 - let part; 13 - crimping part;

[0040] 2 - connecting seat; 21 - through hole; 22 - connecting groove;

[0041] 3 - connecting sleeve; 31 - assembly groove; 311 - first end part; 312 - second end part; 32 - sleeve part; 33 - connecting protrusion;

[0042] 4 - driving line. Specific embodiment

[0043] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0044] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0045] In the description of the utility model, it needs to explain, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0046] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0047] Embodiment

[0048] The embodiment provides a wire drive fixing structure, which comprises a kit 1 and a connecting member, referring to Figures 1 to 5 The connecting member is fixedly embedded with the kit 1, two through holes 21 are arranged on the connecting member, an assembly groove 31 is arranged on the connecting member, the assembly groove 31 can be in communication with any through hole 21, so as to form an assembly space in which at least part of the driving wire 4 is arranged.

[0049] The wire drive fixing structure provided by the embodiment can fix and limit the driving wire 4 arranged through the kit 1 and the connecting member, and at least part of the assembly space of the driving wire 4 is arranged through the through hole 21 and the assembly groove 31 on the connecting member; during assembly, the two ends of the driving wire 4 can be arranged through the two through holes 21 first, then the driving wire 4 between the two through holes 21 is arranged in the assembly groove 31, and the connection position of the driving wire 4 is adjusted to adapt to the assembly space, and then the kit 1 is fixed with the connecting member to complete the fixation of the driving wire 4; this kind of fixation mode has the advantages of simple structure, stable fixation effect, can arrange the driving wire 4 meeting the use requirement of wire drive in the limited volume of surgical instruments, compact structure and good practicability.

[0050] In the specific embodiment, referring to Figure 6The four through holes 21 and the two assembly grooves 31 are suitable for assembling two driving lines 4.

[0051] As a specific embodiment, the kit 1 is suitable for connecting with a front-end instrument of a surgical instrument, and the coupling member is connectable with a flexible universal joint of a wire drive. Through the combination of the proximal side wire drive and the flexible universal joint, the kit 1 and the front-end instrument at the distal side are adjusted in the motion position and the bending angle. The front-end instrument can be provided as a forceps head, scissors, aspirator, retractor, electrocoagulation gun, etc.

[0052] As a preferred embodiment, the coupling member includes a coupling seat 2 and a coupling sleeve 3 fixedly connected with each other. The coupling sleeve 3 is arranged on the side of the coupling seat 2 close to the kit 1, and the kit 1 is sleeved and mounted on the outside of the coupling sleeve 3. The two through holes 21 are arranged on the coupling seat 2 in a spaced manner, and the assembly groove 31 is arranged on the outer circumferential side of the coupling sleeve 3. For the coupling seat 2 provided in the embodiment, four through holes 21 are arranged thereon, and the four through holes 21 are arranged in pairs to correspond to the assembly of the two driving lines 4. The coupling seat 2 and the coupling sleeve 3 are fixedly arranged, which can increase the connection area between the structures, improve the connection strength, and ensure the reliability of the assembly cavity formed by the kit 1 and the coupling member.

[0053] In a specific embodiment, the kit 1 includes a barrel wall part 11, which is arranged in abutment with the coupling seat 2, and the assembly groove 31 and the two through holes 21 are arranged in communication through the inner cavity of the barrel wall part 11. The barrel wall part 11 serves as a fixed base for mounting the driving lines 4 in cooperation with the coupling member, and also serves as a fixed base for connecting the front-end instrument. In the embodiment, the wire drive fixing structure is arranged to assemble the driving lines 4 in the space provided by the through holes 21, the assembly groove 31, and the inner cavity of the barrel wall part 11.

[0054] In the embodiment, the kit 1 further includes a crimping part 13 arranged in extension along the axial direction of the inner wall of the barrel wall part 11 to at least partially cover the driving lines 4 assembled in the assembly groove 31. In the embodiment, the crimping part 13 is formed by the inner wall of the barrel wall part 11. After the driving lines 4 are assembled in the assembly groove 31, the kit 1 and the coupling sleeve 3 are sleeved and assembled, so that the crimping part 13 contacts and presses the driving lines 4, thereby crimping the driving lines 4 between the assembly groove 31 and the crimping part 13. As a further embodiment, a guide wall surface can be arranged on the barrel wall part 11 to facilitate the contact between the inner wall of the barrel wall part 11 and the driving lines 4, thereby facilitating the driving lines 4 to smoothly enter the position limited by the crimping.

[0055] In the embodiment, referring to Figure 4 and Figure 7The coupling sleeve 3 further comprises a sleeve portion 32, and the assembly groove 31 is recessed on the outer wall surface of the sleeve portion 32; the sleeve 1 is sleeved on the outer circumferential side of the sleeve portion 32, and the sleeve portion 32 and the sleeve 1 are arranged in an interference fit. Specifically, the sleeve portion 32 and the barrel wall portion 11 of the sleeve 1 are arranged in an interference fit, the outer diameter of the sleeve portion 32 is slightly larger than the inner diameter of the barrel wall portion 11, so that the two are fixed and limited by structural interference fit. In other embodiments, the sleeve portion 32 and the sleeve 1 are arranged in a crimping manner. Specifically, the sleeve portion 32 and the barrel wall portion 11 can be connected by an external punch acting in the radial direction of the barrel wall portion 11, so that the barrel wall portion 11 is deformed by crimping, and the inner structure of the barrel wall portion 11 is embedded in the sleeve portion 32, so that the barrel wall portion 11 and the sleeve portion 32 are relatively fixed. The crimping point and the number of the punch can be configured according to the actual crimping and fixing requirements. Of course, the sleeve portion 32 and the sleeve 1 can be fixed by other methods, such as welding or bonding.

[0056] In the embodiment, referring to Figure 6 and Figure 7 , the coupling seat 2 is provided with a coupling groove 22, and the coupling groove 22 is recessed at the end surface of the coupling seat 2 facing the sleeve 1; the coupling sleeve 3 is provided with a coupling protrusion 33, any coupling protrusion 33 is connected to the outer side of the sleeve portion 32, and the coupling protrusion 33 is correspondingly installed in the coupling groove 22; the coupling protrusion 33 is provided with a plurality of coupling protrusions 33, and the coupling protrusion 33 is annularly distributed on the outer circumferential side of the sleeve portion 32 close to the end portion of the coupling seat 2; the plurality of coupling grooves 22 are respectively connected to the plurality of coupling protrusions 33, so as to improve the connection strength and stability between the coupling seat 2 and the coupling sleeve 3.

[0057] In specific embodiments, the coupling protrusion 33 and the coupling groove 22 can be assembled and fixed by interference fit, so as to fix the coupling seat 2 and the coupling sleeve 3. The coupling groove 22 and the through hole 21 are arranged in an avoiding and staggering manner. Of course, the coupling protrusion 33 and the coupling groove 22 can be fixed by other methods, such as crimping, welding or bonding.

[0058] As an exemplary embodiment, referring to Figures 1 to 3, the sleeve assembly 1 is integrally sleeved and crimped on the driving wire 4 and the coupling sleeve 3; the driving wire 4 is crimped and fixed in the assembly groove 31 by the sleeve assembly 1; the inner cavity of the barrel wall portion 11 is provided with a clearance portion 12, specifically, the clearance portion 12 is recessed and arranged on the end face of the barrel wall portion 11 facing the coupling seat 2, wherein the assembly depth of the assembly groove 31 is smaller than the diameter of the driving wire 4, so that the driving wire 4 can partially expose the assembly groove 31 to abut against the crimping portion 13. One driving wire 4 is assembled in the space provided by the two through holes 21, the assembly groove 31 and the clearance portion 12. The driving wire 4 is crimped and fixed in the assembly groove 31 by the crimping portion 13 outside the coupling seat 2, so as to realize the stable fixation of the driving wire 4. In this way, the clearance portion 12 is arranged to be isolated from the external environment, the sleeve assembly 1 can integrally envelope and close the sleeve portion 32 of the coupling sleeve 3, the connection is tight, and the contact bonding surface of the sleeve assembly 1 and the coupling member can be further welded to strengthen the structural strength. The structure is simple, the driving wire 4 meeting the use requirements of the wire drive can be arranged in the limited volume of the surgical instrument, and the structure is compact.

[0059] In the above embodiment, referring to Figure 4 and Figure 7 , the assembly groove 31 is arranged as an arc-shaped groove body, so as to facilitate the arrangement and assembly of the driving wire 4. The sleeve portion 32 is arranged as a hollow cylindrical structure, so as to facilitate the flexible sleeving between the sleeve assembly 1 and the coupling sleeve 3.

[0060] For the driving wire 4 described above, the driving wire 4 can be specifically made of a nickel-titanium alloy wire.

[0061] In other embodiments, referring to Figure 8 and Figure 9 , the assembly groove 31 is arranged as a corrugated segment groove body, which is beneficial to improve the assembly and connection area of the driving wire 4 and is beneficial to strengthen the fixation stability of the wire drive fixation structure to the driving wire 4. Of course, the assembly groove 31 can be arranged as other groove shapes, and is not limited to the corrugated segment groove body.

[0062] In other embodiments, referring to Figure 10 and Figure 11 , the assembly groove 31 has a first end portion 311 and a second end portion 312, and the first end portion 311 and the second end portion 312 respectively correspond to extend and communicate with the two through holes 21. In this way, the connection and contact area of the driving wire 4 and the coupling member is improved, which is beneficial to improve the connection and limiting precision of the coupling member and the driving wire 4, and the fixation effect of the wire drive fixation structure to the driving wire 4.

[0063] In other embodiments, referring to Figure 10 and Figure 11 , the sleeve portion 32 is arranged as a hollow square column structure, and the inner side of the barrel wall portion 11 sleeved thereon is arranged as a square column wall surface to adapt to assembly. Of course, the sleeve portion 32 can be arranged as other column shapes.

[0064] Embodiment 2

[0065] As a variation of Embodiment 1, see Figure 12 and Figure 13 , the driving wire 4 is fixed by means of partial crimping and partial welding; the cylinder wall part 11 is provided with a clearance part 12; specifically, the clearance part 12 is recessed and arranged on the inner wall surface of the cylinder wall part 11 facing the coupling sleeve 3, wherein the assembly depth of the assembly groove 31 is smaller than the diameter of the driving wire 4, so that the driving wire 4 can partially expose the assembly groove 31 to abut against the crimping part 13. One driving wire 4 is assembled in the space provided by the two through holes 21, the assembly groove 31 and the clearance part 12. And the driving wire 4 is crimped and fixed in the assembly groove 31 by the crimping part 13 outside the coupling seat 2, and the part exposed by the clearance part 12 is welded, so as to realize the stable fixation of the driving wire 4; in this way, the clearance space of the clearance part 12 can be connected with the external environment, the sleeve part 32 of the coupling sleeve 3 can be partially enveloped by the sleeve 1, and the driving wire 4 can be exposed through the clearance part 12 for the user to observe and implement welding; the structure is simple, the driving wire 4 meeting the use requirement of the wire drive can be arranged in the limited volume of the surgical instrument, and the structure is compact.

[0066] Embodiment 3

[0067] As another variation of Embodiment 1, see Figure 14 , as another exemplary embodiment, the driving wire 4 is fixed and assembled by welding; the cylinder wall part 11 is provided with a clearance part 12; specifically, the clearance part 12 is recessed and arranged on the inner wall surface of the cylinder wall part 11 facing the coupling sleeve 3, and the welding area of the driving wire 4 is exposed by the clearance part 12; specifically, the welding area is arranged on the inner side of the curved arc of the driving wire 4, and the inner side arc area of the driving wire 4 is welded and arranged with the sleeve part 32 of the coupling sleeve 3; wherein the assembly depth of the assembly groove 31 is smaller than the diameter of the driving wire 4, so that the driving wire 4 can partially expose the assembly groove 31 to be welded with the sleeve part 32.

[0068] Embodiment 4

[0069] The present embodiment provides a surgical instrument, which comprises a driving wire 4 and a wire drive fixing structure in any of the above embodiments, and the driving wire 4 is fixedly connected in the wire drive fixing structure.

[0070] Obviously, the above embodiments are only examples for clear illustration, and are not a limitation on the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present utility model creation.

Claims

1. A wire drive fixing structure characterized by comprising: The utility model relates to a kind of line drive fixing structure, including: Kit (1); Coupling member is fixedly embedded with the kit (1), at least two groupings interval arrangement through holes (21) are provided on the coupling member, assembly slot (31) is provided on the coupling member, the assembly slot (31) and any described through hole (21) are communicated arrangement, to be suitable for forming at least partial through assembly drive line (4) assembly space.

2. The wire drive fixation structure according to claim 1, characterized by The coupling member includes coupling seat (2) and coupling sleeve (3) of fixedly spliced, the coupling sleeve (3) is arranged on the side of the coupling seat (2) close to the kit (1), and the kit (1) is sleeved and installed on the outside of the coupling sleeve (3); Two described through holes (21) are interval arrangement on the coupling seat (2), and the assembly slot (31) is configured on the outer circumferential side of the coupling sleeve (3).

3. The wire drive fixation structure according to claim 2, characterized in that, The kit (1) includes barrel wall part (11), the barrel wall part (11) is arranged in abutment with the coupling seat (2), and the assembly slot (31) and two described through holes (21) are communicated and arranged by the inner cavity of the barrel wall part (11).

4. The wire drive fixation structure according to claim 3, characterized in that, The kit (1) further includes crimping part (13);The crimping part (13) is arranged in the axial direction of the inner wall of the barrel wall part (11) and extends to cover at least partially the drive line (4) assembled in the assembly slot (31) by crimping.

5. The wire drive fixation structure according to claim 2, characterized by The coupling sleeve (3) further includes sleeve part (32), the kit (1) is sleeved on the outer circumferential side of the sleeve part (32), and the sleeve part (32) and the kit (1) are provided in interference fit, crimping, welding or bonding.

6. The line drive fixation structure of claim 5, wherein, The sleeve part (32) is provided as a hollow cylindrical structure or a hollow square column structure.

7. The line drive fixation structure of claim 5, wherein, The coupling seat (2) is provided with coupling groove (22), and the coupling groove (22) is recessed on the end face of the coupling seat (2) towards the kit (1); The coupling sleeve (3) is provided with coupling protrusion (33), and any coupling protrusion (33) is connected to the outside of the sleeve part (32), and the coupling protrusion (33) is correspondingly installed in the coupling groove (22); The coupling protrusion (33) is provided with a plurality of coupling protrusions (33), and the coupling protrusions (33) are annularly distributed on the outer circumferential side of the sleeve part (32) close to the end of the coupling seat (2);The coupling protrusion (33) and the coupling groove (22) are provided in interference fit, crimping, welding or bonding.

8. The line drive fixation structure according to any one of claims 1 to 7, wherein The assembly slot (31) is provided as an arc-shaped slot or a corrugated segment slot.

9. The line drive fixation structure according to any one of claims 1 to 7, wherein Four through holes (21) are provided, and two assembly slots (31) are provided, and four through holes (21) and two assembly slots (31) are suitable for assembling two drive lines (4);And / or The assembly slot (31) has first end (311) and second end (312), and the first end (311) and the second end (312) are correspondingly extended and communicated with two through holes (21) respectively.

10. A surgical instrument, characterized by The utility model relates to a kind of line drive fixing structure, including: Drive line (4) and the line drive fixing structure described in any one of claims 1-9, the drive line (4) is fixedly connected in the line drive fixing structure through.

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