A kind of lead wire forceps for arthroscopic surgery

Abstract

The utility model provides a wire guide forceps for arthroscopic surgery, comprising a first forceps arm and a second forceps arm hinged by a pin shaft, a sharp blade end is provided at the forceps mouth of the first forceps arm, and the first forceps arm and the second forceps arm are both hollow; both ends of the first forceps arm are connected to the outside world for wires to pass through; a threading groove is provided at the forceps mouth of the second forceps arm, and the threading groove is connected to the inner cavity of the second forceps arm, and a wire clamping block is slidably connected to one end of the inner cavity of the second forceps arm close to the threading groove, and the wire clamping block can be extended and retracted in the threading groove, a clamping portion is convexly provided at the front end of the wire clamping block, and a groove for cooperating with the clamping portion to clamp the wire; an ejector pin is movably inserted in the inner cavity of the second forceps arm, and the ejector pin is fixedly connected to the rear end of the wire clamping block, and a locking mechanism is provided at one end of the second forceps arm away from the threading groove, and the locking mechanism is used to lock the position of the ejector pin. The utility model has a simple structure, convenient wire guide operation, stable wire clamping, not easy to fall off, and improved surgical efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a wire guide forceps for arthroscopic surgery. Background Art

[0002] Arthroscopic surgery involves inserting a lens metal tube with an illumination device into the joint cavity through a very small incision, and magnifying the internal structure of the joint cavity on a monitor to observe the lesions and locations in the joint cavity, while conducting a comprehensive inspection and cleaning of the lesions under television monitoring. Arthroscopic surgery is a minimally invasive surgery that has both diagnostic and therapeutic functions. Arthroscopic surgery often involves suturing soft tissue to bones or suturing wounds, so wire clamps are needed to pull the sutures.

[0003] The prior art discloses a wire guide forceps, comprising a first handle and a second handle hinged by a pivot, wherein a punching cone is provided at the end of the first handle for forming a suture hole on human tissue, and a wire guide groove is also provided on the first handle for passing the suture thread therethrough in advance; a barb is provided at the end of the second handle for leading the suture thread in the wire guide groove out for suturing the wound.

[0004] However, during the lead-in operation, the existing lead-in forceps only lead out the suture thread through the barb, which does not firmly fix the suture thread and easily causes the suture thread to fall off, thereby affecting the efficiency of the operation.

[0005] Therefore, there is an urgent need for a lead wire forceps for arthroscopic surgery to solve the above technical problems. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a wire guide forceps for arthroscopic surgery, which has a simple structure, is convenient for wire guide operation, can stably clamp the wire, is not easy to fall off, and improves the efficiency of surgery.

[0007] The utility model provides a wire guide forceps for arthroscopic surgery, comprising a first forceps arm and a second forceps arm, the first forceps arm and the second forceps arm are hinged by a pin shaft, the working parts of the first forceps arm and the second forceps arm are mutually matched arc-shaped structures, a sharp blade end is provided at the forceps mouth of the first forceps arm, and the first forceps arm and the second forceps arm are both hollow; both ends of the first forceps arm are connected to the outside world for wires to pass through; a threading groove is provided at the forceps mouth of the second forceps arm, and the threading groove is connected to the inner cavity of the second forceps arm, and the second forceps A wire clamping block is slidably connected to one end of the inner cavity of the arm close to the wire threading groove, and the wire clamping block can be extended and retracted in the wire threading groove. A clamping portion is convexly provided on the front end of the wire clamping block, and a groove for cooperating with the clamping portion to clamp the wire is provided on the inner wall of the wire threading groove; a thimble is movably inserted in the inner cavity of the second clamp arm, and the thimble is fixedly connected to the rear end of the wire clamping block, and the thimble is used to drive the wire clamping block to extend and retract in the wire threading groove, and a locking mechanism is provided at the end of the second clamp arm away from the wire threading groove, and the locking mechanism is used to lock the position of the thimble.

[0008] Preferably, the locking mechanism includes an insert block, a lock column and an L-shaped groove, the L-shaped groove is arranged on the inner wall of the second clamp arm away from the end of the threading groove, the L-shaped groove includes a longitudinal groove extending along the length direction of the second clamp arm and a transverse groove perpendicular to the length direction of the second clamp arm, and the longitudinal groove is communicated with the transverse groove; the insert block is movably inserted in the inner cavity of the second clamp arm away from the end of the threading groove, and the front end of the insert block is fixedly connected to the ejector pin; the lock column is fixed to the side of the insert block, and the lock column can slide in the longitudinal groove as the insert block moves, and can be clamped in the transverse groove as the insert block rotates to lock the position of the ejector pin.

[0009] Preferably, a push-pull block is fixed to the rear end of the insert block for driving the insert block to move.

[0010] Preferably, a handle is fixed at the tail of each of the first clamp arm and the second clamp arm.

[0011] Preferably, the clamping portion is an arc-shaped protrusion, and the groove is an arc-shaped groove.

[0012] Preferably, the ejector pin is made of steel wire.

[0013] Compared with the related art, the lead wire forceps for arthroscopic surgery provided by the utility model has the following beneficial effects:

[0014] The utility model provides a wire guide forceps for arthroscopic surgery. Since both ends of the first forceps arm are connected to the outside world, it is convenient to pass the wire through the inner cavity of the first forceps arm, so that the end of the wire can be pulled out along the forceps mouth of the first forceps arm; when in use, the operator passes the sharp blade end of the first forceps arm through human tissue, and then uses fingers to operate to make the wire outlet of the first forceps arm close to the threading groove of the second forceps arm, so that the wire head extends into the threading groove. At this time, the operator drives the clamping block to extend into the threading groove by operating the ejector pin to clamp the wire head, and locks the position of the ejector pin through a locking mechanism to prevent the ejector pin and the clamping block from loosening; then the operator uses fingers to operate to make the first forceps arm and the second forceps arm move away from each other. Since one end of the wire is clamped by the clamping block, the wire is pulled out of the first forceps arm for a distance, which is convenient for people to perform wire guide operation. The utility model has a simple structure, convenient wire guide operation, stable wire clamping, and is not easy to fall off, thereby improving surgical efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall cross-sectional structure of the lead wire forceps for arthroscopic surgery provided by the utility model;

[0016] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0017] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0018] Figure 4 This is a structural schematic diagram of the L-shaped groove provided by the utility model.

[0019] Numbers in the figure: 1, first clamp arm; 11, sharp blade end; 2, second clamp arm; 21, threading groove; 211, groove; 22, L-shaped groove; 221, longitudinal groove; 222, transverse groove; 3, wire clamp block; 31, clamping part; 4, ejector pin; 5, plug block; 6, locking column; 7, push-pull block; 8, handle. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0021] In the specific implementation process, Figure 1-Figure 4As shown, a wire guide forceps for arthroscopic surgery includes a first forceps arm 1 and a second forceps arm 2, which are hinged by a pin shaft to realize the opening and closing operation of the wire guide forceps. The working parts of the first forceps arm 1 and the second forceps arm 2 are mutually matched arc-shaped structures, and a sharp blade end 11 is provided at the forceps mouth of the first forceps arm 1, so that the first forceps arm 1 can penetrate from one part of the human tissue and pass out from another part. The first forceps arm 1 and the second forceps arm 2 are both hollow, and both ends of the first forceps arm 1 are connected to the outside world, and the wire is passed through the inner cavity of the first forceps arm 1. A threading groove 21 is provided at the jaws of the second clamp arm 2, and the threading groove 21 is communicated with the inner cavity of the second clamp arm 2. A clamping block 3 is slidably connected to one end of the inner cavity of the second clamp arm 2 close to the threading groove 21. The clamping block 3 can be extended and retracted in the threading groove 21. A clamping portion 31 is convexly provided at the front end of the clamping block 3. A groove 211 for cooperating with the clamping portion 31 to clamp the wire is provided on the inner wall of the threading groove 21. An ejector pin 4 is also movably inserted in the inner cavity of the second clamp arm 2. The ejector pin 4 is fixedly connected to the rear end of the clamping block 3. The ejector pin 4 is used to drive the clamping block 3 to extend and retract in the threading groove 21. A locking mechanism is provided at one end of the second clamp arm 2 away from the threading groove 21. The locking mechanism is used to lock the position of the ejector pin 4.

[0022] The utility model provides a wire guide forceps for arthroscopic surgery. Since both ends of a first forceps arm 1 are connected to the outside world, it is convenient to pass a wire through the inner cavity of the first forceps arm 1, so that the end of the wire can be pulled out along the forceps mouth of the first forceps arm 1. When in use, an operator passes the sharp edge end 11 of the first forceps arm 1 through human tissue, and then uses fingers to operate to make the wire outlet of the first forceps arm 1 close to the threading groove 21 of the second forceps arm 2, so that the wire head extends into the threading groove 21. At this time, the operator drives the wire clamping block 3 to extend into the threading groove 21 by operating the ejector pin 4 to clamp the wire head, and locks the position of the ejector pin 4 by a locking mechanism to prevent the ejector pin 4 and the wire clamping block 3 from loosening. Afterwards, the operator uses fingers to operate to make the first forceps arm 1 and the second forceps arm 2 move away from each other. Since one end of the wire is clamped by the wire clamping block 3, the wire is pulled out of the first forceps arm 1 for a distance, which is convenient for people to perform the wire guide operation. The utility model has the advantages of simple structure, convenient wire leading operation, stable wire clamping, and is not easy to fall off, thus improving the operation efficiency.

[0023] refer to Figure 3 and Figure 4As shown, the locking mechanism of this embodiment includes an insert block 5, a locking column 6 and an L-shaped groove 22. The L-shaped groove 22 is arranged on the inner wall of the second clamp arm 2 away from the threading groove 21. The L-shaped groove 22 includes a longitudinal groove 221 extending along the length direction of the second clamp arm 2 and a transverse groove 222 perpendicular to the length direction of the second clamp arm 2. The longitudinal groove 221 is connected with the transverse groove 222. The insert block 5 is movably inserted into the inner cavity of the second clamp arm 2 away from the threading groove 21. The front end of the insert block 5 is fixedly connected to the ejector pin 4, and the ejector pin 4 can be driven to move in the inner cavity of the second clamp arm 2 by operating the insert block 5. The locking column 6 is fixed to the side of the insert block 5. The locking column 6 can slide in the longitudinal groove 221 with the movement of the insert block 5, and can be clamped in the transverse groove 222 with the rotation of the insert block 5 to lock the position of the ejector pin 4. Preferably, a push-pull block 7 is also fixed to the rear end of the insert block 5 of this embodiment, which is convenient for the operator to hold, so as to better drive the insert block 5 to move. In this embodiment, when it is necessary to clamp the wire, the operator pushes the push-pull block 7 forward, driving the insertion block 5 to slide forward in the inner cavity of the second clamp arm 2, and then drives the wire clamping block 3 to extend into the threading groove 21 through the ejector pin 4, and the wire is clamped by the clamping portion 31 cooperating with the groove 211; at this time, the locking column 6 on the insertion block 5 slides to the end of the longitudinal groove 221, and then the operator rotates the insertion block 5 again, so that the locking column 6 is stuck in the transverse groove 222, thereby effectively preventing the insertion block 5 from retreating, avoiding the wire clamping block 3 from loosening during the process of clamping the wire, and improving the surgical efficiency.

[0024] Further, refer to Figure 1 As shown, in this embodiment, a handle 8 is fixed at the tail of the first clamp arm 1 and the second clamp arm 2 to facilitate the operator to drive the first clamp arm 1 and the second clamp arm 2 to move. Figure 2 As shown, the clamping portion 31 of this embodiment is an arc-shaped protrusion, and the groove 211 is an arc-shaped groove that matches the arc-shaped protrusion. Such a configuration can make the clamping block 3 clamp the wire more stably and reliably. In addition, the ejector pin 4 of this embodiment is made of steel wire, which is low in cost and has good corrosion resistance, strength and wear resistance. Of course, in other embodiments, the ejector pin 4 can also be made of titanium alloy or other materials, and is not limited to this embodiment.

[0025] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A guide wire forceps for arthroscopic surgery, comprising a first forceps arm (1) and a second forceps arm (2), wherein the first forceps arm (1) and the second forceps arm (2) are hingedly connected via a pin, the working parts of the first forceps arm (1) and the second forceps arm (2) are mutually engaged arc-shaped structures, the first forceps arm (1) is provided with a sharp blade end (11) at the forceps mouth, and characterized in that: The first clamp arm (1) and the second clamp arm (2) are both hollow; both ends of the first clamp arm (1) are connected to the outside world for wires to pass through; a threading groove (21) is provided at the jaws of the second clamp arm (2), and the threading groove (21) is connected to the inner cavity of the second clamp arm (2); a wire clamp block (3) is slidably connected to one end of the inner cavity of the second clamp arm (2) close to the threading groove (21); the wire clamp block (3) can be extended and retracted in the threading groove (21); a clamping member (3) is convexly provided at the front end thereof. The second clamp arm (2) has a second clamping portion (31), the inner wall of the threading groove (21) is provided with a groove (211) for cooperating with the clamping portion (31) to clamp the wire; a thimble (4) is movably inserted into the inner cavity of the second clamp arm (2), the thimble (4) is fixedly connected to the rear end of the clamping block (3), the thimble (4) is used to drive the clamping block (3) to extend and retract in the threading groove (21), and a locking mechanism is provided at one end of the second clamp arm (2) away from the threading groove (21), the locking mechanism is used to lock the position of the thimble (4).

2. The arthroscopic surgery lead forceps according to claim 1, characterized in that: The locking mechanism comprises an insert block (5), a locking column (6) and an L-shaped groove (22), wherein the L-shaped groove (22) is arranged on the inner wall of the second clamp arm (2) at one end away from the threading groove (21), and the L-shaped groove (22) comprises a longitudinal groove (221) extending along the length direction of the second clamp arm (2) and a transverse groove (222) perpendicular to the length direction of the second clamp arm (2), and the longitudinal groove (221) is connected to the transverse groove (222); the insert block (5) is movably plugged into the inner cavity of the second clamp arm (2) at one end away from the threading groove (21), and the front end of the plug block (5) is fixedly connected to the ejector pin (4); the locking column (6) is fixed to the side of the plug block (5), and the locking column (6) can slide in the longitudinal groove (221) as the plug block (5) moves, and can be engaged in the transverse groove (222) as the plug block (5) rotates, so as to lock the position of the ejector pin (4).

3. The arthroscopic surgery lead wire forceps according to claim 2, characterized in that: A push-pull block (7) is fixed to the rear end of the insert block (5) for driving the insert block (5) to move.

4. The lead forceps for arthroscopic surgery according to claim 1, characterized in that: A handle (8) is fixed at the tail of each of the first clamp arm (1) and the second clamp arm (2).

5. The arthroscopic surgery lead forceps according to claim 1, characterized in that: The clamping portion (31) is an arc-shaped protrusion, and the groove (211) is an arc-shaped groove.

6. The arthroscopic surgery lead forceps according to claim 1, characterized in that: The ejector pin (4) is made of steel wire.

Images