A spinal fiber ring suture system

Abstract

The invention discloses a spinal annulus fibrosus suturing system, which is characterized by comprising a puncture needle (1), a thread cutter (2) used in conjunction with the puncture needle (1), and a knot pusher (3) used in conjunction with the puncture needle (1); the puncture needle (1) and the thread cutter (2) have a push rod (13); the puncture needle 1 and the thread cutter 2 have a handle (4) of a common structure; the handle (4) comprises a housing (5), the inner side of which is provided with a slide groove (8); the puncture needle (1) and the thread cutter (2) slide into the rear end of the housing (5) through the push rod (13) and are slidably connected with the slide groove (8). The invention has a complete puncture suturing system, is easy to operate, has a simple structure, is made from a single source of materials, and has the advantages of low cost.

Description

Technical Field

[0001] The invention relates to a suturing device used in spinal surgery, in particular to a spinal fiber ring suturing system. Background Art

[0002] There are few structures and products used in the existing technology for spinal annulus suture, and there are the following problems: 1. Most similar products are only suitable for suturing the meniscus and knee joints; 2. This suture structure for the meniscus is too complicated and not suitable for annulus suture; 3. The suture structure of the suture structure is complex and not suitable for annulus suture, and the structure only has a puncture structure, and there are no structural functional components such as thread breaking and knot pushing designed for the complete process, which affects the surgical effect; 4. The suture is made of a variety of materials, with complex processes, complex structures, and high costs. For example, patent application number 201811443430.5, named a patent application for a meniscus suture, has the above technical problems. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a spinal fiber ring suture system, which overcomes the above-mentioned shortcomings of the prior art, has complete functions, greatly improves the effect and efficiency of surgical use, reduces the operation time, reduces the patient's pain and surgical risks, ensures that the operation is smooth, convenient and easy to operate. Due to the simple suture structure and unified materials, it also has the characteristics of simple process and low cost.

[0004] The suturing principle of a spinal annulus fibrosus suture system of the present invention is: a suture is buried on each side of the longitudinal incision of the annulus fibrosus for suturing, usually one knot is sufficient, and double knots can also be used for fixing depending on the situation. The annulus fibrosus suturing is a surgery performed under an endoscope, and the suturing is performed after the unnecessary nucleus pulposus is removed. Since the wound to be sutured by the surgery is small and the field of vision is limited, the structure needs to be fine and ingenious, and at the same time, it can meet the requirements of puncture, thread embedding, knotting, knot pushing, cutting, small trauma, small structure, etc. The spinal annulus fibrosus suturing system of the present invention meets the above requirements.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0006] A spinal annulus suture system, characterized in that it comprises a puncture needle, a wire breaker used in conjunction with the puncture needle, and a knot pusher used in conjunction with the puncture needle; the puncture needle and the wire breaker have a push rod; the puncture needle and the wire breaker have a handle with a common structure; the handle comprises a shell, the inner side of which is provided with a slide groove; the puncture needle and the wire breaker slide into the rear end of the shell through the push rod and are slidably connected to the slide groove; the knot pusher comprises a push groove rod, one end of the push groove rod has a circular ring, and the circular ring is provided with an opening.

[0007] Preferably, the handle comprises a shell with a window on the upper front end, and an end cap fixedly connected to the rear end of the shell; a slide groove is provided on the inner side of the shell; a connecting end is provided at the front end of the shell; the connecting end is provided with a connecting port, and the connecting port is connected to the slide groove; the connecting end has an inclined surface;

[0008] The end cap is provided with a wire groove; the wire groove is located on both sides of the end cap; the wire groove is one or more, and the ridges of the wire groove are arranged in parallel on the axis of the end cap; the axis direction of the wire groove extends all the way to the outside of the shell.

[0009] Preferably, an axial strip groove is also provided at the upper position inside the shell, and the axial strip groove is connected to the axial slide groove, and the cross-sectional width of the axial strip groove is larger than the cross-sectional width of the axial slide groove, forming a T-shaped axial through groove; or, an axial trapezoidal hole groove is also provided between the axial strip groove and the axial slide groove for connection, and the axial trapezoidal hole groove is connected to the connecting port.

[0010] Preferably, the puncture needle comprises a puncture needle tube, and the puncture needle tube is outer-connected with a reinforcement tube; the relative sliding length difference between the puncture needle tube and the front end of the reinforcement tube is based on the surgical requirements and the axial length L of the slide groove of the housing;

[0011] A guide wire and a suture are arranged in the puncture needle tube; the guide wire and the suture are pre-arranged in the puncture needle tube and placed closely and parallel to each other; the front end of the suture is fixedly connected to an anti-retraction rod.

[0012] Preferably, the variable diameter retaining tube is fixedly arranged on the inner side of the aperture of the connection port of the shell; the proximal end of the puncture needle tube is provided with a scale to facilitate accurate puncture; the front end of the puncture needle tube is a hollow needle with an inclined angle α relative to the puncture needle tube, especially an angle of 15-20°.

[0013] The push rod is a common structure of the puncture needle and the wire breaker, and the push rods are respectively a puncture needle push rod and a wire breaker push rod;

[0014] The cross-section of the puncture needle push rod is set to a T-shaped edge, and the upper cross-sectional width of the puncture needle push rod is greater than the lower cross-sectional width to form a T-shaped edge, which is made of integrated molding; the T-shaped protrusion can be slidably connected with the slide groove; at the same time, the axial strip groove on the upper inner side of the shell is engaged with the upper cross-sectional width of the puncture needle push rod and then slidably connected, which is used for limiting the sliding of the puncture needle push rod 21 to ensure that the puncture needle push rod slides forward stably in the shell; the outer diameter of the rear end of the end cap is greater than the inner diameter of the shell, and the rear end of the end cap remains outside the rear end of the shell, which has a blocking effect.

[0015] An axial guide wire fixing hole is arranged in the puncture needle push rod formed by the integrated process, and the right end of the guide wire fixing hole is a blind end; the left end of the guide wire is fixedly connected to the blind end of the guide wire fixing hole.

[0016] Preferably, a protrusion or a screw may be provided on the front end of the puncture needle push rod, and a push handle is fixedly connected to the push handle through the protrusion or the screw; the front end of the push handle is higher than the rear end, the middle part is slightly lower, and there is a ridge at the middle position.

[0017] Preferably, the axial length of the shell is related to the length of the guide wire and suture that need to be pushed out by the shell segment; the front end of the puncture needle push rod is longer than the front end of the reinforcement tube; the outer diameter of the puncture needle is preferably 1.4mm, and the inner diameter is preferably 1.0-1.2mm.

[0018] Preferably, the handle of the wire breaker has the same structural dimensions as the handle of the puncture needle; the handle of the wire breaker differs from the push rod of the puncture needle in that the middle axial hole is arranged at a different position;

[0019] The wire breaker comprises a threading tube, a blade tube, a wire breaker push rod and a handle, wherein the push handle is fixedly connected to the wire breaker push rod; the wire breaker push rod has a T-shaped cross section, and after being pushed into the rear end of the housing, it can slide in the T-shaped slide groove and the bar slot in the housing;

[0020] The wire breaker push rod is formed in one piece and is provided with an axially penetrating blade tube fixing hole, and the right end of the blade tube is fixedly connected to the rear end of the blade tube fixing hole;

[0021] A fixing hole is provided in the middle of the end cap, which is a threading tube fixing hole. The threading tube fixing hole is a blind end at the rear end of the end cap and is also the fixed end of the rear end of the threading tube. The blade tube fixing hole is connected to the threading tube fixing hole.

[0022] The threading tube passes through the threading tube fixing hole, the blade tube fixing hole, the blade tube, and the connection port of the handle and then extends out to be placed at the front end;

[0023] The diameter of the fixing hole of the blade tube is larger than the diameter of the fixing hole of the threading tube, and the diameter of the blade tube is larger than the diameter of the threading tube; when the threading tube is fixed at the end cap end, the push handle or the wire breaker push rod only acts on the blade tube under the forward push of external force, ensuring that the blade tube can slide on the outer wall of the threading tube; the length of the sliding of the front end of the blade tube on the outer wall of the threading tube is to at least ensure that it exceeds the position of the front end of the blade tube, which is conducive to wire breaking.

[0024] The threading front end is provided with a threading hole and a threading inclined groove, which is used to pass the suture that is tied and needs to be cut through the threading hole in advance and pull it out along the threading inclined groove conveniently;

[0025] The front end of the blade tube is set as a blade edge; the blade edge is a pointed blade edge set on the opposite side;

[0026] The end of the blade tube is also provided with a plurality of blade tube holes, which are conducive to intercepting and cutting the suture when the blade tube slides on the outer wall of the threading tube.

[0027] Preferably, the suture material is made of non-metallic and / or absorbable titanium alloy or magnesium alloy that is degradable in the human body, such as Mg-Zn alloy or Mg-Li-Ga alloy, preferably titanium alloy.

[0028] The raw material magnesium alloy of the absorbable magnesium alloy suture of the present invention can be made by smelting, casting, extrusion, wire drawing, bending, heat treatment, pickling, cleaning and other processes. The main element is pure magnesium, and the added alloying elements are one or more of Zn, Ca, Nd and Sr: in terms of weight percentage, the chemical composition and content of the magnesium alloy are: Zn 0.5% to 3.0%, Ca 0.2% to 2.0%, Nd 0.1% to 3.0%, Sr 0.2% to 1.0%, and magnesium as the balance.

[0029] The absorbable magnesium alloy suture of the present invention has good mechanical properties, tensile strength: 243-370MPa, yield strength: 150-230MPa, elongation: 20-30%.

[0030] The absorbable magnesium alloy suture thread selected by the present invention has a diameter of 0.2-0.4 mm, is used for suturing soft tissue and bone tissue, and has a length of 30-100 cm, and the length used is determined according to needs.

[0031] The present invention has the following beneficial technical effects over the prior art through the above technical solution:

[0032] 1. The present invention has a complete puncture and suturing system, including a puncture needle, a thread cutter, and a knot pusher, which are used together to complete the entire surgical suturing process.

[0033] 2. The present invention particularly innovates the structure of the puncture needle and the handle. The puncture needle and the wire cutter have a handle with a common structure, which is more convenient to install and use.

[0034] 3. The suture structure of the present invention is simple, an integrated structure, and has an anti-backward structure. It is made of the same material, does not need to be wound or tied, is made by an integrated process, has a single source of materials, and has the advantage of low cost.

[0035] 4. The suture material of the present invention is in various forms and is made of non-metallic and / or absorbable magnesium alloy. After being implanted in the human body, it is gradually absorbed over time without any residue and does not require incision for removal, so it is highly safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is the appearance diagram of the puncture needle, thread cutter and knot pusher of the present invention

[0037] Figure 2 This is the assembly diagram of the puncture needle of the present invention

[0038] Figure 3 This is a cross-sectional view of the puncture needle of the present invention

[0039] Figure 4 This is a diagram showing the use status of the puncture needle of the present invention.

[0040] Figure 5 This is the assembly diagram of the wire breaker of the present invention

[0041] Figure 6 A cross-sectional view of the wire breaker of the present invention

[0042] Figure 7 Schematic diagram of the structure of the knot pusher of the present invention

[0043] Figure 8 This is a schematic diagram of the right side structure of the handle and the housing after assembly of the present invention.

[0044] Fig. 9 Schematic diagram of the three-dimensional structure of the handle of the present invention

[0045] Fig.10 This is a schematic diagram of the T-shaped cross-section structure of the handle of the present invention.

[0046] Fig.11 Schematic diagram of the end cap structure of the present invention

[0047] Fig.12 Schematic diagram of the suture structure of the present invention

[0048] Fig.13 Schematic diagram of the threading structure at the end of the threading tube of the present invention

[0049] Numbers in the figure:

[0050] 1-puncture needle, 2-wire breaker, 3-knot pusher, 4-handle, 5-housing, 6-window, 7-end cap, 8-slide, 9-connection end, 10-connection port, 11-wire slot, 12-convex ridge, 13-push rod, 14-strip card slot, 15-puncture needle tube, 16-reinforcement tube, 17-guide wire, 18-suture, 19-anti-retraction rod, 20-reducing diameter stop tube, 21-puncture needle push rod, 22-T-shaped ridge, 23 -Guide wire fixing hole, 24-protrusion or screw, 25-push handle, 26-propelling groove rod, 27-circular ring, 28-opening, 29-threading tube, 30-blade tube, 31-blade tube fixing hole, 32-threading tube fixing hole, 33-threading hole, 34-threading oblique groove, 35-blade mouth, 36-blade tube hole, 37-wire breaker push rod, 38-rib, 39-hollow needle, 40-trapezoidal hole groove, 41-fiber ring DETAILED DESCRIPTION

[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 , Fig.13 The spinal fiber ring suture system shown in the figure includes a puncture needle 1, a thread breaker 2, a knot pusher 3, a handle 4, a shell 5, a window 6, an end cap 7, a slide groove 8, a connecting end 9, a connecting port 10, a thread groove 11, a convex ridge 12, a push rod 13, a strip slot 14, a puncture needle tube 15, a reinforcement tube 16, a guide wire 17, a suture 18, an anti-retraction rod 19, a variable diameter stop tube 20, a puncture needle push rod 21, a T-shaped ridge 22, an axial guide wire fixing hole 23, a protrusion or a screw 24, a push handle 25, a push groove rod 26, a ring 27, an opening 28, a threading tube 29, a blade tube 30, a blade tube fixing hole 31, a threading tube fixing hole 32, a threading hole 33, a threading oblique groove 34, a blade mouth 35, a blade tube hole 36, a thread breaker push rod 37, a strip ridge 38, and a hollow needle 39.

[0052] The spinal annulus suturing system of the present invention specifically comprises a puncture needle 1, a thread cutter 2 and a knot pusher 3 used in conjunction with the puncture needle 1; the puncture needle 1 and the thread cutter 2 have a handle 4 of a common structure;

[0053] The design of the handle 4 of the shared structure takes into account the similarities and differences in the structures of the puncture needle 1 and the wire breaker 2. The innovation made allows both the puncture needle and the wire breaker to be arranged on the structural handle 4, thereby achieving the purpose of meeting the use and functional requirements while saving costs.

[0054] The handle 4 includes a shell 5 with a window 6 on the upper front end, and an end cap 7 fixedly connected to the rear end of the shell 5, and the end cap 7 has the function of sealing the shell 5 at the end; a slide groove 8 is provided on the inner side of the shell 5; a connecting end 9 is provided at the front end of the shell 5; the connecting end 9 is provided with a connecting port 10, and the connecting port 10 is connected to the slide groove 8; the connecting end 9 has an inclined surface, which is used as a force surface for blocking and pushing;

[0055] The end cap 7 is provided with a wire groove 11 for limiting the rear end of the suture 18; the wire groove 11 is located on both sides of the end cap 7, and there is one or more wire grooves 11, and the convex ridges 12 of the wire groove 11 are arranged in parallel on the axis of the end cap 7; the axial direction of the wire groove 11 extends all the way to the outside of the shell 5, so that the length of the suture 18 can extend outside the shell 5.

[0056] At the same time, the end cap 7 forms a hollow shape due to the structure of the wire groove 11 and the convex ridge 12, which reduces the weight of the end cap 7 and the entire handle 4;

[0057] The upper position of the inner side surface of the housing 5 also has an axial strip groove 14, which is connected to the axial slide groove 8 to form a T-shaped groove axially penetrating therethrough for installing the puncture needle 1 and the T-shaped push rod 13 of the wire cutter 2.

[0058] The puncture needle 1 comprises a puncture needle tube 15, which is connected with a reinforcing tube 16 to increase the strength of the puncture needle tube 15. The relative sliding length difference between the front ends of the puncture needle tube 15 and the reinforcing tube 16 is determined according to the surgical requirements and the axial length L of the slide groove 8 of the housing.

[0059] A guide wire 17 and a suture 18 are arranged in the puncture needle tube 15, and the guide wire 17 has a guiding and fixing effect on the suture 18; the guide wire and the suture are pre-arranged in the puncture needle tube 15 and placed closely and parallel; the front end of the suture 18 is fixedly connected to an anti-retraction rod 19 to prevent the suture from retreating from the front end of the puncture needle tube 15, which has a limiting effect; when in use, after the puncture needle 1 punctures the dorsal side of the fiber ring, due to the blocking and fixing effect of the width of the anti-retraction rod 19, the suture end will not retreat, which is convenient for subsequent knotting, pushing knots, cutting, and completing the entire suture;

[0060] The variable diameter retaining tube 20 is fixedly arranged inside the aperture of the connection port 10 of the housing 5, and has a limiting effect on the puncture needle tubes 5 and guide wires 17 of different diameters passing through;

[0061] The proximal end of the puncture needle tube 15 is provided with a scale for accurately pushing the guide wire 17 and suture 18 after puncture;

[0062] The front end of the puncture needle tube 15 is a hollow needle 39, which has an inclined angle α relative to the puncture needle tube 15, especially an angle of 15-20°, which is conducive to puncture;

[0063] Since the puncture needle tube 15 has scales and end angles, it has the functions of accurately integrating puncture and wire feeding.

[0064] The push rod 13 of the present invention comprises a puncture needle push rod 21 and a wire breaker push rod 37 because of the structure of the puncture needle 1 and the wire breaker 2;

[0065] The cross section of the puncture needle push rod 21 of the puncture needle 1 is connected with a T-shaped ridge 22. The cross-sectional width of the upper section of the puncture needle push rod 21 is greater than the cross-sectional width of the lower T-shaped ridge 22. The puncture needle push rod 21 is made of an integrated molding, and the T-shaped ridge 22 can be slidably connected with the slide groove 8. At the same time, the axial strip groove 14 above the shell 5 is engaged with the cross-sectional width of the upper section of the puncture needle push rod 21 and then slidably connected, which is used to limit the position of the puncture needle push rod 21 and ensure that the puncture needle push rod 21 slides in the shell 5.

[0066] During installation, after the puncture needle push rod 21 is pushed in from the rear end opening of the shell 5, and after the end cap 7 is pushed in at the rear end position of the shell 5, the front end of the puncture needle push rod 21 is limited, and the puncture needle push rod 21 can slide toward the front end direction in the shell 5; the outer diameter of the end cap 7 is larger than the inner diameter of the shell 5, and the end cap 7 remains outside the rear end of the shell 5, which has a blocking and limiting effect.

[0067] The puncture needle push rod 21 formed by the integrated process is provided with a blind end axial guide wire fixing hole 23, and the left end of the guide wire 17 is fixedly connected to the blind end of the axial guide wire fixing hole 23;

[0068] A protrusion or screw 24 may also be provided on the front end of the puncture needle push rod 21, and a push handle 25 may be fixedly connected to the protrusion or screw 24;

[0069] The front end of the push handle 25 is higher than the rear end, and the middle part is slightly lower. There is a ridge 38 at the middle position, which is conducive to pushing the puncture needle tube 15 to control the pushing speed;

[0070] The window 6 of the housing 5 is used to install the push handle 25 above the window and provide a position for pushing during use; the axial length design of the housing 5 is related to the distance pushed to the surgical site, specifically, to the length of the guide wire 17 and suture 18 that need to be pushed out of the housing segment;

[0071] The front end of the puncture needle push rod 21 is longer than the front end of the reinforcing tube 16, which is conducive to puncture. The outer diameter of the puncture needle is preferably 1.4 mm, and the inner diameter is preferably 1.0-1.2 mm;

[0072] Push the push handle 25 or, when the push handle 25 is not provided, push the front end of the puncture needle push rod 21, driving the guide wire 17, suture 18 and anti-retraction rod 19 preset in the puncture needle tube 15 to move forward. During operation, when the puncture needle tube 15 is placed in the position for puncturing the fiber ring, the hollow needle 39 at the front end of the puncture needle tube 15 punctures the back side of the fiber ring, pushes the push handle 25 or the front end of the puncture needle push rod 21, pushes the suture 17 and the anti-retraction rod 18 out of the front end of the puncture needle tube 15, and then the suture 17 and the anti-retraction rod 18 remain on the back side of the fiber ring, and withdraws from the puncture needle tube 15, thereby completing the suture puncture, pushing and fixing.

[0073] The suture knotting after pushing is completed by a knot pusher 3, which is a simple and practical integrated structure, including a pushing groove rod 26, one end of which has a ring 27, and the ring 27 is provided with an opening 28; after the suture 18 is knotted, the opening 28 is used to clamp the knot and push it forward, and the knot is pushed to the bottom of the fiber ring 41, and the knotting is completed.

[0074] The knot pusher 3 has the characteristics of simple structure and convenient pushing, and is designed in consideration of practical application and convenient processing.

[0075] During the operation, the thread breaking after the suture knotting is completed is completed by the thread cutter 2, thereby forming a suture, knot tying, knot pushing and thread breaking device system;

[0076] The handle 4 of the wire cutter 2 has the same structure and size as the handle 4 of the puncture needle 1 ; the handle 4 of the wire cutter 2 differs from the push rod 13 of the puncture needle 1 in that the structure of the middle axial hole is different.

[0077] The wire breaker comprises a blade tube 30 and a threading tube 29;

[0078] The wire breaker 2 comprises a threading tube 29, a blade tube 30, a wire breaker push rod 37, and a handle 4. The wire breaker push rod 37 is fixedly connected with a push handle 25.

[0079] The wire breaker push rod 37 has a T-shaped cross section, and after being pushed into the rear end of the housing 5, it can slide in the T-shaped slide groove 8 and the strip-shaped slot 14 in the housing;

[0080] The wire breaker push rod 37 is formed in one piece and is provided with an axially penetrating blade tube fixing hole 31 . The right end of the blade tube 30 is fixedly connected to the rear end of the blade tube fixing hole 31 .

[0081] The end cap 11 is provided with a fixing hole 32 in the middle, which is a threading tube fixing hole 32. The threading tube fixing hole 32 is a blind end at the rear end of the end cap 11, and is also the fixed end of the rear end of the threading tube 29. The blade tube fixing hole 31 is connected to the threading tube fixing hole 32.

[0082] The threading tube 29 passes through the threading tube fixing hole 32, the blade tube fixing hole 31, the blade tube 30, and the connecting port 10 of the handle and then extends out to the front end;

[0083] The diameter of the blade tube fixing hole 31 is larger than the diameter of the threading tube fixing hole 32, and the diameter of the blade tube 30 is larger than the diameter of the threading tube 29; when the threading tube 29 is fixed at the end of the end cap 11, the push handle 25 or the wire breaker push rod 37 only acts on the blade tube 30 under the forward push of external force, ensuring that the blade tube 30 can slide on the outer wall of the threading tube 29; the length of the sliding of the front end of the blade tube 30 on the outer wall of the threading tube 30 is to at least ensure that it exceeds the position of the front end of the blade tube 30, which is conducive to wire breaking.

[0084] The front end of the threading tube 29 is provided with a threading hole 33 and a threading inclined groove 34, which are used to pass the suture 18 that is tied and needs to be cut through the threading hole 33 in advance and pull it out along the threading inclined groove 34;

[0085] The front end of the blade tube 30 is set as a blade edge 35; the blade edge 35 is a pointed blade edge set on the opposite side;

[0086] The end of the blade tube 30 is also provided with a plurality of blade tube holes 36 , which are conducive to intercepting and cutting the suture 18 when the blade tube 30 slides on the outer wall of the threading tube 29 .

[0087] During operation, the push handle 25 or the thread cutter push rod 37 is pushed from the window 6 position, the front end of the blade tube 30 slides forward to the threading position of the front end of the threading tube 29, and the blade tube 30 is slid back and forth, and the blade edge 35 can cut the knotted suture 18 threaded on the end of the threading tube 29, so that the fiber ring suture operation process of suture, knotting, pushing knots, and cutting is completed. The suture is made of magnesium alloy Mg-Zn alloy that is degradable and absorbable in the human body.

[0088] The operation steps of the device to sew the fiber ring are as follows:

[0089] After the nucleus pulposus is removed under the endoscope, the puncture needle 1 is first inserted into the puncture and suturing channel of the endoscope, and one side of the puncture needle 1 with an angle faces the incision, and its direction can be positioned by the angle of the handle 4 and the push handle 25;

[0090] After piercing the fiber ring, push the push handle 25, the push handle 25 and the push rod 21 (puncture needle push rod 21, wire breaker push rod 37) are connected as an integrated structure, and the guide wire 17 inserted in the puncture needle push rod 21 follows the push handle 25 and moves along the puncture needle tube 15, pushing the suture 18 forward. The front end of the suture 18 is provided with an anti-backward rod 19, which ensures that the suture 18 will not return when there is no physical damage to the fiber ring. After the front end of the suture 18 enters the back of the fiber ring, because the anti-backward rod 19 structure is clamped, the puncture needle 1 can be withdrawn at this time, and the suture 18 remains on the fiber ring, and the puncture needle 1 is pulled out, leaving the suture 18.

[0091] The same operation steps are followed, and the suture 18 is buried on the other side of the incision, and then a knot is tied. The knot pusher 3 is used, and the front open ring 27 structure clamps a suture 18 and pushes the knot to the fiber ring incision, and multiple knots are tied according to actual needs. Subsequently, the knotted suture 18 is passed through the threading tube 29 of the thread cutter 2, and the blade tube 30 is slid to the knotting position, and the excess suture 18 is cut off, and the suture is completed. If multiple sutures are required, the above steps can be repeated.

[0092] The spinal annulus fibrosus suture system of the present invention has the following characteristics:

[0093] 1. The fiber ring suture system includes puncture, knot pushing and wire cutting components, which is a complete set.

[0094] 2. The suture is integrally formed and has a physical anti-retraction structure. No extra material is introduced, the process is reliable, and the complex fixing process is eliminated, resulting in a higher degree of integration.

[0095] 3. The puncture needle has a simple structure, and the suture can be buried by puncturing and pushing out. The technology is mature, the cost is low, and it is easy to promote and operate during surgery.

[0096] 4. The components of the suturing system have a simple structure and are easy to operate during surgery; the operation is simple, saving surgical time, no positioning is required, and multiple cycles are not required.

[0097] 5. The suturing principle is simple, convenient and easy to operate.

[0098] 6. The wire cutter is easy to operate, cuts wires accurately and does not cause tangling.

[0099] 7. The puncture needle has a scale and integrates puncture and wire feeding.

Claims

1. A spinal annulus suture system, characterized by: The invention comprises a puncture needle (1), a wire breaker (2) used in conjunction with the puncture needle (1), and a knot pusher (3) used in conjunction with the puncture needle (1); the puncture needle (1) and the wire breaker (2) have a push rod (13); the puncture needle and the wire breaker have a handle (4) of a common structure; the handle (4) comprises a shell (5) having a window (6) on the front end, and an end cap (7) fixedly connected to the rear end of the shell (5); a slide groove (8) is provided on the inner side of the shell (5); the puncture needle (1) and the wire breaker (2) slide into the rear end of the shell (5) through the push rod (13) and are slidably connected to the slide groove (8); the knot pusher (3) comprises a push groove rod (26), one end of the push groove rod (26) has a ring (27), and the ring (27) is provided with an opening (28); The push rod (13) is a common structure of the puncture needle and the wire breaker, and the push rod (13) is respectively a puncture needle push rod (21) and a wire breaker push rod (37); The handle (4) of the wire cutter (2) and the handle (4) of the puncture needle (1) have the same structural dimensions; The wire breaker comprises a threading tube (29), a blade tube (30), a wire breaker push rod (37), and a handle (4), wherein the wire breaker push rod (37) is fixedly connected with a push handle (25); The wire breaker push rod (37) has a T-shaped cross section and can slide in the T-shaped slide groove (8) and the strip-shaped slot (14) in the housing after being pushed in from the rear end of the housing (5); the wire breaker push rod (37) is integrally formed and is provided with an axially penetrating blade tube fixing hole (31), and the right end of the blade tube (30) is fixedly connected to the rear end of the blade tube fixing hole (31); A fixing hole is provided in the middle of the end cap (7), which is a threading tube fixing hole (32). The threading tube fixing hole (32) is a blind end at the rear end of the end cap and is also the fixed end of the rear end of the threading tube (29); the blade tube fixing hole (31) is in communication with the threading tube fixing hole (32); The threading tube (29) is inserted into the threading tube fixing hole (32), the blade tube fixing hole (31), the blade tube (30), and the connecting port (10) of the handle, and then extends out to be placed at the front end; the diameter of the blade tube fixing hole (31) is larger than the diameter of the threading tube fixing hole (32), and the diameter of the blade tube (30) is larger than the diameter of the threading tube (29); when the threading tube (29) is fixed at the end of the end cap (7), the push handle (25) or the wire breaker push rod (37) only acts on the blade tube (30) under the forward push of an external force, so as to ensure that the blade tube (30) can slide on the outer wall of the threading tube (29); The length of the front end of the blade tube (30) sliding on the outer wall of the threading tube (29) is at least guaranteed to exceed the front end position of the blade tube (30), which is conducive to wire breaking; The front end of the threading tube (29) is provided with a threading hole (33) and a threading inclined groove (34), which are used to pass the suture (18) that is tied and needs to be cut through the threading hole (33) in advance and pull it out along the threading inclined groove (34); The front end of the blade tube (30) is set as a blade edge (35); the blade edge (35) is a pointed blade edge set on the opposite side; The end of the blade tube (30) is also provided with a plurality of blade tube holes (36), which are conducive to intercepting and cutting the suture (18) when the blade tube (30) slides on the outer wall of the threading tube (29).

2. The spinal annulus suture system according to claim 1, characterized in that: The housing (5) is provided with a slide groove (8) on the inner side; the housing (5) is provided with a connecting end (9) at the front end; the connecting end (9) is provided with a connecting port (10), and the connecting port (10) is connected to the slide groove (8); the connecting end has an inclined surface; The end cap (7) is provided with a wire groove (11); the wire groove is located on both sides of the end cap; there are a plurality of wire grooves, and the ridges (12) of the wire groove are arranged in parallel on the axis of the end cap; the wire groove extends along the axis direction to the outside of the shell.

3. The spinal annulus fiber suture system according to claim 2, characterized in that: The housing also has a strip-shaped slot (14) at the upper position, the strip-shaped slot is connected to the axial slide groove (8), the cross section of the strip-shaped slot is wider than the cross section of the axial slide groove, forming a T-shaped axially through slot; or, a trapezoidal hole slot (40) is provided between the strip-shaped slot and the axial slide groove for connection, the trapezoidal hole slot (40) is connected to the connection port (10).

4. The spinal annulus fiber suture system according to claim 2, characterized in that: The puncture needle (1) comprises a puncture needle tube (15), which is outer-connected with a reinforcement tube (16); the relative sliding length difference between the front ends of the puncture needle tube (15) and the reinforcement tube (16) is based on surgical requirements and the axial length L of the slide groove (8) of the housing; A guide wire (17) and a suture (18) are arranged inside the puncture needle tube (15); the guide wire and the suture are pre-arranged inside the puncture needle tube (15) and placed closely and in parallel; the front end of the suture (18) is fixedly connected to an anti-retraction rod (19).

5. The spinal annulus fiber suture system according to claim 4, characterized in that: The variable diameter retaining tube (20) is fixedly arranged on the inner side of the aperture of the connection port (10) of the housing (5); a scale is provided at the proximal end of the puncture needle tube (15), which is conducive to accurate puncture; the front end of the puncture needle tube is a hollow needle (39) having an angle α inclined relative to the puncture needle tube (15), and the angle α is an angle of 15-20°.

6. The spinal annulus fiber suture system according to claim 4, characterized in that: The cross section of the puncture needle push rod (21) is set as a T-shaped edge (22), and the width of the upper cross section of the puncture needle push rod (21) is greater than the width of the lower cross section to form a T-shaped edge (22), which is made of an integrated molding; the T-shaped edge (22) can be slidably connected with the slide groove (8); at the same time, the strip-shaped groove (14) on the upper inner side of the shell (5) is engaged with the width of the upper cross section of the puncture needle push rod (21) and then slidably connected, which is used for limiting the sliding of the puncture needle push rod (21) to ensure that the puncture needle push rod slides forward stably in the shell (5); the outer diameter of the rear end of the end cap (7) is greater than the inner diameter of the shell (5), and the rear end of the end cap (7) is left outside the rear end of the shell (5), which has a blocking effect; An axial guide wire fixing hole (23) is provided in the puncture needle push rod (21), and the right end of the guide wire fixing hole (23) is a blind end; the right end of the guide wire (17) is fixedly connected to the blind end of the guide wire fixing hole (23).

7. The spinal annulus suture system according to claim 6, characterized in that: The front end of the puncture needle push rod (21) is also provided with a protrusion or a screw (24), and is fixedly connected to a push handle (25) via the protrusion or the screw; the front end of the push handle (25) is higher than the rear end, the middle part is slightly lower, and there is a ridge (38) at the middle position.

8. The spinal annulus suture system according to claim 6, characterized in that: The front end of the puncture needle push rod (21) is longer than the front end of the reinforcing tube (16); the outer diameter of the puncture needle is 1.4 mm, and the inner diameter is 1.0-1.2 mm.

9. The spinal annulus fiber suture system according to claim 4, characterized in that: The suture (18) material is made of a non-metallic, absorbable titanium alloy or Mg-Zn magnesium alloy that is degradable in the human body.

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