A non-surface knotless intervertebral disc puncture suture device

Abstract

The present invention discloses a non-surface knotless intervertebral disc puncture suture device, which relates to the technical field of medical devices. In order to solve the problems that the existing annulus fibrosus suture devices need to perform suture incisions, knot tying, and shearing separately, and the suture process is cumbersome and the operation is complex, the following technical solutions are proposed: It includes a puncture guide and a suture cutting device. The puncture guide is used to implant the suture arranged thereon into the annulus fibrosus of the intervertebral disc. The suture cutting device includes a handle, a cutting assembly, a push rod, and a button. The button is arranged on the handle, the button is connected to the push rod, the push rod extends to the front end of the suture cutting device and is connected to the cutting assembly, and the button controls the push rod to push the cutting assembly to move to cut the suture on the annulus fibrosus of the intervertebral disc. The present invention can complete the implantation of the suture, the suture of the surgical incision, and the suture cutting with two main instruments, without an additional knot tying device and manual knot tying (or pre-knotting), simplifies the operation process, improves the surgical efficiency, and reduces the risk of postoperative nerve compression.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a non-surface knot-free intervertebral disc puncture suture device. Background Art

[0002] Intervertebral disc herniation is one of the common orthopedic diseases in clinical practice, especially common in middle-aged and elderly people. The number of patients has been on the rise in recent years and is gradually getting younger. The most common cause of this disease is the varying degrees of degenerative changes in various parts of the intervertebral disc, such as the nucleus pulposus, annulus fibrosus, and cartilage endplate, etc., and under the action of external force factors, the annulus fibrosus of the intervertebral disc ruptures, resulting in a series of clinical symptoms such as pain or limb numbness.

[0003] At present, the clinical treatment method can relieve the compression of the nerve root by removing the protruding nucleus pulposus and the free annulus fibrosus tissue. At the same time, to avoid the recurrence of the nucleus pulposus, after removing the nucleus pulposus, it is necessary to suture the incision left by the annulus fibrosus. For example, in the annulus fibrosus suture device disclosed in the patent technologies with the publication numbers CN219289557U or CN219962956U, after removing the nucleus pulposus, first use the suture device to suture the incision, then use a knotting device or manually knot (or pre-knot) the suture, and finally use a wire cutter to cut the knotted suture. The knot of the cut suture remains on the outer surface, which has the risk of compressing the nerve, and multiple instruments need to be used in cooperation during the suture process. The process is cumbersome and the operation is complex. Especially the delicate operations of suturing and knotting are time-consuming and laborious, and need to be further simplified to improve the surgical efficiency and reduce the operation time. Summary of the Invention

[0004] The purpose of the present invention is to provide a non-surface knot-free intervertebral disc puncture suture device to solve the problems that the existing annulus fibrosus suture device needs to first suture the incision, then use a knotting device or manually knot the suture, and then use a wire cutter to cut the knotted suture, which has the risk of compressing the nerve, and the suture process is cumbersome and the operation is complex.

[0005] The technical solution of the present invention to solve the above technical problems is as follows:

[0006] A non-surface knot-free intervertebral disc puncture suture device, which includes: a puncture guide and a suture cutting device. The puncture guide is used to implant the suture provided thereon into the annulus fibrosus of the intervertebral disc;

[0007] The suture cutting device includes a handle, a cutting assembly, a push rod, and a button. The button is arranged on the handle. The button is connected to the push rod. The push rod extends to the front end of the suture cutting device and is connected to the cutting assembly. The button controls the push rod to push the cutting assembly to move, lock and cut the suture on the annulus fibrosus of the intervertebral disc.

[0008] Preferably, the puncture guide includes a puncture needle and a puncture push rod. The puncture needle perforates the annulus fibrosus of the intervertebral disc, and the puncture push rod implants a suture into the annulus fibrosus of the intervertebral disc through the perforation.

[0009] Preferably, the shearing assembly includes an outer shearing tube connected to the front end of the handle, and an inner shearing tube, a limiting clamp, and a wire locking clip respectively arranged inside the outer shearing tube. Both ends of the limiting clamp are respectively connected to the push rod and the wire locking clip, and the wire locking clip is arranged inside the inner shearing tube.

[0010] Preferably, the push rod includes a wire locking clip push rod and a limiting clamp push rod. The front end of the wire locking clip push rod is connected to the tail end of the wire locking clip, and the front end of the limiting clamp push rod is connected to the tail end of the limiting clamp; the button includes a wire locking clip push rod button, a limiting clamp push rod button, and an outer shearing tube button. The wire locking clip push rod button is connected to the rear end of the wire locking clip push rod, the limiting clamp push rod button is connected to the rear end of the limiting clamp push rod, and the outer shearing tube button is connected to the rear end of the outer shearing tube;

[0011] The inner shearing tube is sleeved outside the wire locking clip push rod, and the wire locking clip push rod is sleeved outside the limiting clamp push rod.

[0012] Preferably, the front end of the outer shearing tube is an obliquely cut opening. Corresponding to the obliquely cut opening of the outer shearing tube at the front end of the inner shearing tube, a cavity for passing the suture and a cavity for placing the limiting clamp are respectively opened. The rear end of the inner shearing tube is fixed on the inner wall of the handle. The outer shearing tube and the inner shearing tube can move relatively. The front end of the outer shearing tube and the front end of the inner shearing tube form a cutting opening, and the suture passing through the cutting opening is sheared.

[0013] Preferably, the limiting clamp includes a symmetric first limiting clamp and a second limiting clamp. One end of the first limiting clamp and the second limiting clamp is bent at a certain angle and abuts against the front end face of the wire locking clip. The other ends of the first limiting clamp and the second limiting clamp are provided with hinge holes and are respectively hinged to one end of the limiting clamp push rod through hinge pieces. The first limiting clamp and the second limiting clamp are limit-hinged through a limiting post fixed on the inner wall of the inner shearing tube.

[0014] Preferably, a ring magnet is fixedly connected to the front end face of the inner shearing tube. The ring magnet is used to suck and pull out the two ends of the metal catheter of the suture implanted into the annulus fibrosus from the annulus fibrosus through the incision of the annulus fibrosus.

[0015] Preferably, the wire locking clip includes a limiting sleeve, a wire biting clip, and a washer. The limiting sleeve is hollow, and an extrusion limiting ring is convexly arranged in the middle thereof. A washer is arranged inside the rear end of the limiting sleeve. The wire biting clip is placed between the washer and the extrusion limiting ring. The wire locking clip push rod pushes the washer, and the washer and the extrusion limiting ring squeeze the wire biting clip, so that the wire biting end in the open state of the wire biting clip bites the suture tightly.

[0016] Preferably, the wire biting clip is in the shape of a hollow cylinder, and the middle part thereof is provided with a pressure receiving ring with a gradually decreasing diameter along the circumferential direction to abut and fit with the extrusion limiting ring arranged in the limiting sleeve. The wire biting end of the wire biting clip is a symmetrically arranged semi-cylinder, and a plurality of wire placing grooves are formed on the inner surface.

[0017] The present invention has the following beneficial effects:

[0018] The present invention implants the suture into the annulus fibrosus by using a puncture guide, and then controls the pusher rod on the handle to push the outer cutting tube, the limiting forceps and the wire locking clip to move. The wire locking clip is used to lock the suture, and the outer cutting tube is used to cut the suture, so as to achieve the purpose of not tying knots during the operation. It can complete the implantation of the suture, the suturing of the surgical incision and the cutting of the suture by using two main instruments, without an additional knot tying device and manual knot tying (or pre-knotting). The operation is simple and the process is simplified, which can improve the surgical efficiency, reduce the doctor's operation time, and after the surgical suture is completed, the knot and the wire locking clip are both in the nucleus pulposus cavity instead of the outer surface of the annulus fibrosus, reducing the risk of nerve compression. Description of the Drawings

[0019] Figure 1 It is the overall structure diagram of the non-surface knot-free disc puncture suture device of the present invention;

[0020] Figure 2 It is the structure diagram of the puncture guide of the non-surface knot-free disc puncture suture device of the present invention;

[0021] Figure 3 For Figure 2 The enlarged view at the front end A;

[0022] Figure 4 It is the structure diagram of the suture cutting device of the non-surface knot-free disc puncture suture device of the present invention;

[0023] Figure 5 For Figure 4 The enlarged view at the front end B;

[0024] Figure 6 For Figure 4 The perspective view at the front end B;

[0025] Figure 7 It is the internal structure diagram of the handle of the non-surface knot-free disc puncture suture device of the present invention;

[0026] Figure 8 It is the cross-sectional view at the front end B of the suture cutting device of the non-surface knot-free disc puncture suture device of the present invention;

[0027] Figure 9 It is the connection structure diagram of the limiting forceps and the limiting forceps pusher rod of the non-surface knot-free disc puncture suture device of the present invention;

[0028] Figure 10 Structural diagram of the thread-locking clip of the non-surface knot-free intervertebral disc puncture suture device of the present invention;

[0029] Figure 11 Structural diagram of the thread-biting clip of the non-surface knot-free intervertebral disc puncture suture device of the present invention;

[0030] Figure 12 Structural diagram of the suture scissors extending into the annulus fibrosus of the non-surface knot-free intervertebral disc puncture suture device of the present invention and partial enlarged views at positions E and F in the figure;

[0031] Figure 13 Effect diagram of the completed suture of the non-surface knot-free intervertebral disc puncture suture device of the present invention;

[0032] Figures 1 to 13 The reference numerals shown in the figure are respectively represented as: puncture guide 1, puncture needle 11, push rod 12, suture 13, metal catheter 14, suture scissors 2, handle 21, outer scissor tube 22, inner scissor tube 23, limit clamp 24, first limit clamp 241, second limit clamp 242, hinge piece 243, limit post 244, thread-locking clip 25, limit sleeve 251, thread-biting clip 252, washer 253, extrusion limit ring 254, ring magnet 26, thread-locking clip push rod 271, limit clamp push rod 272, thread-locking clip push rod button 281, limit clamp push rod button 282, outer scissor tube button 283. Detailed implementation manners

[0033] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figure 1 、 Figure 4 and Figure 8, the present invention provides a non-surface knotless intervertebral disc puncture suture device, which includes a puncture guide 1 and a suture cutting device 2. Among them, the puncture guide 1 includes a puncture needle 11, a push rod 12 and a suture 13, which are mainly used to implant the suture 13 into the annulus fibrosus through the perforation of the annulus fibrosus by the puncture needle 11 using the push rod 12 after perforating the annulus fibrosus; the suture cutting device 2 mainly includes a handle 21, an outer cutting tube 22, an inner cutting tube 23, a limiting clamp 24, a suture locking clip 25, an annular magnet 26, and corresponding push rods and buttons. It controls the movement of the outer cutting tube 22, the limiting clamp 24 and the suture locking clip 25 by pushing the push rod through the button, uses the suture locking clip 25 to lock the suture 13 and cuts the suture 13 with the outer cutting tube 22, achieving the purpose of not knotting during the operation, and completing the implantation, suture and cutting of the suture 13 using two main instruments without the need for additional knotting devices and manual knotting. The operation is simple and the process is simplified, which can improve the surgical efficiency, reduce the doctor's surgical time, and after the operation, the knot and the suture locking clip are both inserted into the nucleus pulposus cavity instead of outside the annulus fibrosus, reducing the risk of nerve compression.

[0035] Please refer to Figures 2 - 3 , both ends of the suture 13 are riveted with a metal catheter 14. One end is guided by the push rod 12 and sent to the front end needle tip A of the hollow puncture needle 11, and the other end is exposed at the hand-held part of the puncture needle 11.

[0036] Please refer to Figures 4 - 7 , a suture locking clip push button 281, a limiting clamp push button 282 and an outer cutting tube button 283 are arranged on the handle, which are respectively connected to the rear ends of the outer cutting tube 22, the suture locking clip push rod 271 and the limiting clamp push rod 272 arranged corresponding to each other from the outside to the inside in the handle 21, and the corresponding components are controlled to move through the button 28; the front end of the outer cutting tube 22 is an obliquely cut opening, and a cavity for passing the suture 13 and a cavity for placing the limiting clamp 24 are opened at the front end of the inner cutting tube 23 at the obliquely cut opening of the outer cutting tube 22. The rear end of the inner cutting tube 23 is fixed on the inner wall of the handle 21, so that the outer cutting tube 22 can move relative to the inner cutting tube 23, so that the front ends of the outer cutting tube 22 and the inner cutting tube 23 form a cutting opening at B, facilitating the cutting of the suture 13 passing through the cutting opening; an annular magnet 26 is fixedly connected to the front end face of the inner cutting tube 23, which is used to suck and pull out the two ends of the metal catheter 14 riveted to the suture 13 implanted in the annulus fibrosus from the annulus fibrosus incision; the outer cutting tube button 281, the suture locking clip push button 282 and the limiting clamp push button 283 are all reset by springs arranged on the handle 21.

[0037] Please refer to Figure 9, The wire clamping clip 25, the limiting clamp 24 and the corresponding push rod are arranged inside the inner cutting tube 23. The limiting clamp 24 includes symmetric first limiting clamp 241 and second limiting clamp 242. One ends of the two limiting clamps are bent at a certain angle and abut against the front end face of the wire clamping clip 25. The other ends of the two limiting clamps are provided with hinge holes and are respectively hinged to one end of the limiting clamp push rod through hinge pieces 243. The two limiting clamps are limit-hinged through limiting posts 244 fixed on the inner wall of the inner cutting tube 23.

[0038] Please refer to Figure 10 , The wire clamping clip 25 includes a limiting sleeve 251, a wire biting clip 252, and a washer 253. The limiting sleeve 251 is hollow, and an extrusion limiting ring 254 is convexly arranged in the middle thereof. A washer 253 is arranged inside the rear end of the limiting sleeve 251. One end of the cylindrical wire biting clip 252 is placed between the washer 253 and the extrusion limiting ring 254 to limit the wire biting clip 252. At the same time, the washer 253 is pushed by the wire clamping clip push rod 271 so that the wire biting clip 252 is extruded by the extrusion limiting ring 254, and thus the wire biting end in the open state at the other end of the wire biting clip 252 is gradually closed to tightly bite the passed suture 13; The whole wire clamping clip 25 can be made of plastic material or titanium metal.

[0039] Please refer to Figure 11 , The wire biting clip 252 is integrally a hollow cylinder. The middle part thereof is provided with a compression ring with a gradually decreasing diameter along the circumferential direction to abut and match with the extrusion limiting ring 254 arranged in the limiting sleeve 251. Its wire biting end is a semi-cylinder symmetrically arranged and provided with a plurality of wire grooves on the inner surface to better bite the suture 13.

[0040] The using steps of the knotless intervertebral disc puncture suture device of the present invention are specifically as follows:

[0041] 1. Use the puncture guide 1 to implant the two ends of the suture 13 riveted to the metal catheter into both sides of the annulus fibrosus incision in two times;

[0042] Specifically, the puncture needle 11 can be used to puncture two through holes on both sides of the annulus fibrosus incision where the nucleus pulposus has been removed first, and then the push rod 12 is used to respectively introduce the metal catheters 14 at both ends of the suture 13 into the inner side of the annulus fibrosus through the two through holes;

[0043] 2. Insert the front end of the suture cutting device 2 into the annulus fibrosus from the incision, and use the magnet 26 at the front end B of the suture cutting device 2 to suck the metal catheters 14 at both ends of the suture 13 and pull the suture 13 out of the incision;

[0044] 3. Use auxiliary tools such as forceps to pull out both ends of the suture from the front end B of the suture cutting device 2, specifically passing through the hollow wire clamping clip 25 and then passing out from the cutting opening formed by the outer cutting tube 22 and the inner cutting tube 23;

[0045] 4. Tighten the suture 13 and insert the suture locking clip 25 into the nucleus pulposus cavity of the annulus fibrosus. With the cooperation of each button on the handle 21, lock the suture 13. After ensuring it is locked, cut the suture 13 and remove the suture cutting instrument 2 to complete the knotless suture operation;

[0046] Specifically (as Figure 12 shown), after inserting the suture locking clip 25 into the nucleus pulposus cavity of the annulus fibrosus, push the limit clamp push rod button 283 on the handle 21. Through the limit clamp push rod 272, make the limit clamp 24 open. Then press the suture locking clip push rod button 282 to move the suture locking clip push rod 271 forward and push the suture locking clip 25, so that the suture locking clip 25 slides out from the front end B of the suture cutting instrument 2. At the same time, due to the force extrusion, the wire clamping clip changes from the open state to the closed state and bites the passed suture 13 tightly; Finally, press the outer shear tube button 281 on the handle 21, push the outer shear tube 22 forward, cut the suture 13 at the cutting opening and then remove the entire suture cutting instrument 2 to complete the suture (the effect is shown in Figure 13 ).

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A non-surface knot-free intervertebral disc puncture suture device, characterized in that: include: A puncture guide (1) and a suture cutter (2), wherein the puncture guide (1) is used to implant a suture (13) arranged thereon into the annulus fibrosus of an intervertebral disc; The suture thread cutter (2) comprises a handle (21), a shearing assembly, a push rod and a button. The button is arranged on the handle (21), the button is connected to the push rod, the push rod extends to the front end of the suture thread cutter (2) and is connected to the shearing assembly. The button controls the push rod to push the shearing assembly to move, lock and cut the suture (13) on the fiber ring of the intervertebral disc. The shearing assembly comprises an outer shearing tube (22) connected to the front end of the handle (21), an inner shearing tube (23) respectively arranged inside the outer shearing tube (22), a limit clamp (24) and a locking clamp (25). The two ends of the limit clamp (24) are respectively connected to the push rod and the locking clamp (25). The locking clamp (25) is The clamp (25) is arranged inside the inner shear tube (23); the wire locking clamp (25) comprises a limiting sleeve (251), a wire biting clamp (252) and a washer (253); the middle part of the limiting sleeve (251) is provided with an extrusion limiting ring (254) which protrudes inwards; the rear end of the limiting sleeve (251) is provided with a washer (253); the wire biting clamp (252) is placed between the washer (253) and the extrusion limiting ring (254); the wire locking clamp push rod (271) pushes the washer (253); the washer (253) and the extrusion limiting ring (254) squeeze the wire biting clamp (252), so that the wire biting end of the wire biting clamp (252) in an open state bites the suture (13) tightly.

2. The non-surface knot-free intervertebral disc puncture suture device according to claim 1, characterized in that: The puncture guide (1) comprises a puncture needle (11) and a puncture push rod (12); the puncture needle (11) perforates the annulus fibrosus of the intervertebral disc, and the puncture push rod (12) implants the suture (13) into the annulus fibrosus of the intervertebral disc through the perforation.

3. The non-surface knot-free intervertebral disc puncture suture device according to claim 1, characterized in that: The push rod comprises a wire locking clamp push rod (271) and a limit clamp push rod (272), the front end of the wire locking clamp push rod (271) is connected to the rear end of the wire locking clamp (25), and the front end of the limit clamp push rod (272) is connected to the rear end of the limit clamp (24); the button comprises a wire locking clamp push rod button (281), a limit clamp push rod button (282) and an external tube cutting button (283), the wire locking clamp push rod button (281) is connected to the rear end of the wire locking clamp push rod (271), the limit clamp push rod button (282) is connected to the rear end of the limit clamp push rod (272), and the external tube cutting button (283) is connected to the rear end of the external tube cutting (22); The inner shear tube (23) is sleeved on the outside of the wire locking clamp push rod (271), and the wire locking clamp push rod (271) is sleeved on the outside of the limit clamp push rod (272).

4. The non-surface knot-free intervertebral disc puncture suture device according to claim 1, characterized in that: The front end of the outer shear tube (22) is an oblique opening, and a groove for passing the suture (13) and a groove for placing the limit clamp (24) are respectively provided at the front end of the inner shear tube (23) at positions corresponding to the oblique opening of the outer shear tube (22). The rear end of the inner shear tube (23) is fixed to the inner wall of the handle (21). The outer shear tube (22) and the inner shear tube (23) are relatively movable, and the front ends of the outer shear tube (22) and the inner shear tube (23) form a notch to cut the suture (13) passing through the notch.

5. The non-surface knot-free intervertebral disc puncture suture device according to claim 3, characterized in that: The limit clamp (24) comprises a symmetrical first limit clamp (241) and a second limit clamp (242); one end of the first limit clamp (241) and one end of the second limit clamp (242) are bent at a certain angle and respectively abut against the front end surface of the locking wire clamp (25); the other end of the first limit clamp (241) and the other end of the second limit clamp (242) are provided with hinge holes and are respectively hinged to one end of the limit clamp push rod (272) through hinge plates (243); the first limit clamp (241) and the second limit clamp (242) are limit-hinged through a limit column (244) fixed on the inner wall of the inner shear tube (23).

6. The non-surface knot-free intervertebral disc puncture suture device according to claim 5, characterized in that: An annular magnet (26) is fixedly connected to the front end surface of the inner shear tube (23), and the annular magnet (26) is used to suck the two ends of the suture (13) implanted in the annulus fibrosus and the riveted metal catheter (14) from the annulus fibrosus and pull them out from the annulus fibrosus incision.

7. The non-surface knot-free intervertebral disc puncture suture device according to claim 1, characterized in that: A pressure ring is circumferentially arranged in the middle of the wire biting clamp (252), and the pressure ring is abutted and adapted with an extrusion limiting ring (254) arranged in the limiting sleeve (251). The wire biting end of the wire biting clamp (252) is a symmetrically arranged semi-cylinder and has a plurality of wire placement grooves on its inner surface.

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