Device for preventing recurrence of intervertebral disc protrusion

Abstract

The utility model provides a device for preventing recurrence of intervertebral disc protrusion, and belongs to the technical field of medical instruments. The device comprises an intervertebral disc blocking piece and a fixing assembly, and a first suture hole and a second suture hole are formed in the intervertebral disc blocking piece at intervals; the fixing assemblies comprise sutures and orthopedic screws, the multiple sets of fixing assemblies correspond to the first suture holes and the second suture holes in a one-to-one mode, one ends of the sutures corresponding to the first suture holes are connected with the orthopedic screws used for being connected with the vertebral body on one side of the intervertebral disc, and the other ends of the sutures penetrate through the first suture holes to the other side of the intervertebral disc blocking piece. One end of the suture corresponding to the second suture hole is connected with an orthopedic screw used for connecting the vertebral body on the other side of the intervertebral disc, and the other end of the suture penetrates through the second suture hole to the other side of the intervertebral disc separation blade and is connected with the suture penetrating out of the first suture hole. The technical problem that in the prior art, after nucleus pulposus removal is conducted on the spine of a patient, intervertebral disc protrusion relapse is prone to occurring can be solved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a device for preventing recurrence of intervertebral disc herniation. Background Technology

[0002] Lumbar disc herniation is one of the most common diseases in spinal surgery. The lumbar spine is composed of bones, intervertebral discs, nerves and other structures. When the intervertebral discs age, they can herniate. If they compress the sciatic nerve, it can cause symptoms such as leg pain, leg numbness and weakness.

[0003] In related techniques, removing the nucleus pulposus of the intervertebral disc through discoscopy, percutaneous endoscopic discectomy, open surgery, or microscopic surgery can relieve pressure on the nerves. However, after nucleolysis, residual tears in the annulus fibrosus become a significant factor in lower back pain and postoperative recurrence. Furthermore, during postoperative activity, the spine inevitably moves, meaning that pressure on the intervertebral disc persists even when standing or sitting. Over time, the disc may bulge again and compress the nerve, leading to a recurrence of lumbar disc herniation after nucleolysis. Utility Model Content

[0004] This utility model provides a device for preventing recurrence of intervertebral disc herniation, which solves the technical problem in the prior art where patients are prone to recurrence of intervertebral disc herniation after discectomy. The technical solution is as follows:

[0005] This utility model provides a device for preventing recurrence of intervertebral disc herniation, including an intervertebral disc baffle and a fixation component.

[0006] The intervertebral disc baffle is provided with a first suture hole and a second suture hole at intervals.

[0007] The fixation assembly includes sutures and orthopedic screws. The fixation assembly is provided in multiple sets, each corresponding to a first suture hole and a second suture hole. One end of the suture corresponding to the first suture hole is connected to the orthopedic screw for connecting to the vertebral body on one side of the intervertebral disc, and the other end passes through the first suture hole to the other side of the intervertebral disc retainer. One end of the suture corresponding to the second suture hole is connected to the orthopedic screw for connecting to the vertebral body on the other side of the intervertebral disc, and the other end passes through the second suture hole to the other side of the intervertebral disc retainer and is connected to the suture that exits through the first suture hole.

[0008] Optionally, multiple sets of the first suture hole and the second suture hole are provided, and the multiple sets of the first suture hole and the second suture hole are evenly spaced along the side of the intervertebral disc baffle.

[0009] Optionally, the axes of the first suture hole and the second suture hole are arranged at an angle to the side of the intervertebral disc retainer.

[0010] Optionally, the intervertebral disc baffle is provided with a suture groove, which connects the first suture hole and the second suture hole in the same group.

[0011] Optionally, the side profile of the intervertebral disc baffle is rectangular.

[0012] Optionally, the intervertebral disc retainer is provided with an elastic material ring on its side.

[0013] Optionally, the intervertebral disc baffle has a rounded chamfer at the side corner.

[0014] Optionally, the intervertebral disc baffle is made of titanium or titanium alloy.

[0015] Optionally, the thickness of the intervertebral disc baffle ranges from 0.5 to 2 mm.

[0016] Optionally, the orthopedic screw has a post extending toward the tail end on its sidewall, and the post is arranged at an acute angle to the axis of the orthopedic screw.

[0017] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following:

[0018] The device for preventing recurrence of intervertebral disc herniation provided in this embodiment of the invention involves placing a disc baffle above the wound surface of the intervertebral disc after nucleotomy. The baffle utilizes a group of first and second suture holes to provide space for threading. Orthopedic screws corresponding to the first and second suture holes are then implanted into the vertebral bodies on both sides of the intervertebral disc. Sutures connecting the orthopedic screws are then led out through the first and second suture holes and tightened, thus positioning the disc baffle to cover the outside of the intervertebral disc wound surface. When the intervertebral disc shows a tendency to bulge outwards again after surgery, the disc baffle can block the bulging area, preventing further proliferation and achieving a corrective effect. This effectively solves the technical problem of recurrence of intervertebral disc herniation after nucleotomy in existing technologies. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a three-dimensional structural schematic diagram of the device for preventing recurrence of intervertebral disc herniation provided in this embodiment of the utility model;

[0021] Figure 2 This is a cross-sectional view of the structure of the device for preventing recurrence of intervertebral disc herniation provided in this embodiment of the present invention, implanted on the spine;

[0022] Figure 3 This is a schematic diagram of the structure of an intervertebral disc baffle provided in an embodiment of the present invention;

[0023] Figure 4 yes Figure 3 Side view of the structural cross-section;

[0024] Figure 5 This is a schematic diagram of the structure of the intervertebral disc baffle with suture groove provided in the embodiment of this utility model;

[0025] Figure 6 This is a schematic diagram of another intervertebral disc baffle provided in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the intervertebral disc baffle with an elastic material ring provided in an embodiment of the present invention;

[0027] Figure 8 This is a structural schematic diagram of another fixing component connection method provided in this embodiment of the utility model;

[0028] Figure 9 This is a cross-sectional view of another intervertebral disc retainer implanted on the spine according to an embodiment of this utility model.

[0029] In the diagram: 1-Intervertebral disc baffle; 2-Fixation component; 11-First suture hole; 12-Second suture hole; 13-Suture groove; 14-Elastic material ring; 21-Suture; 22-Orthopedic screw; 221-Inverted post; m-Intervertebral disc; n-Vertebral body. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0031] Figure 1 This is a three-dimensional structural schematic diagram of the device for preventing recurrence of intervertebral disc herniation provided in this embodiment of the utility model; Figure 2 This is a cross-sectional view of the structure of the device for preventing recurrence of intervertebral disc herniation provided in this embodiment of the invention, implanted on the spine; Figure 3 This is a schematic diagram of the structure of an intervertebral disc baffle provided in an embodiment of the present invention; Figure 4 yes Figure 3 Side view of the structural cross-section; Figure 5This is a schematic diagram of the structure of the intervertebral disc baffle with suture groove provided in the embodiment of this utility model; Figure 6 This is a schematic diagram of another intervertebral disc baffle provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the intervertebral disc baffle with an elastic material ring provided in an embodiment of the present invention; Figure 8 This is a structural schematic diagram of another fixing component connection method provided in an embodiment of this utility model. For example... Figures 1 to 8 As shown, this embodiment of the present invention provides an intervertebral disc retainer 1 and a fixation component 2. The intervertebral disc retainer 1 has first suture holes 11 and second suture holes 12 spaced apart. The fixation component 2 includes sutures 21 and orthopedic screws 22. Multiple sets of fixation components 2 are provided, each corresponding one-to-one with the first suture holes 11 and the second suture holes 12. One end of the suture 21 corresponding to the first suture hole 11 is connected to the orthopedic screw 22 for connecting one side of the vertebral body of the intervertebral disc, and the other end passes through the first suture hole 11 to the other side of the intervertebral disc retainer 1. One end of the suture 21 corresponding to the second suture hole 12 is connected to the orthopedic screw 22 for connecting the other side of the vertebral body of the intervertebral disc, and the other end passes through the second suture hole 12 to the other side of the intervertebral disc retainer 1 and connects with the suture 21 that exits through the first suture hole 11.

[0032] In this embodiment of the invention, the device for preventing recurrence of intervertebral disc herniation is used in conjunction with an intervertebral disc baffle 1 and a fixation component 2. The intervertebral disc baffle 1 is a rectangular sheet structure with multiple sets of first suture holes 11 and second suture holes 12 evenly spaced along its lateral extension direction on its opposite two sides. Figures 1 to 2As shown, in one possible implementation of this utility model, the intervertebral disc baffle 1 is provided with two sets of first suture holes 11 and second suture holes 12, that is, two of each. These four suture holes are respectively located at the four corners of the intervertebral disc baffle 1, that is, the first suture holes 11 and second suture holes 12 between the sets are respectively located on the two diagonals of the intervertebral disc baffle 1. During assembly, according to the wound location of the intervertebral disc m, the implantation positions of the orthopedic screws 22 are first planned on the vertebral bodies n on both sides of the intervertebral disc m. The orthopedic screws 22 corresponding to the first suture holes 11 and second suture holes 12 are respectively driven into the vertebral bodies n on both sides of the intervertebral disc m. The sutures 21 connected to the tail ends of the two orthopedic screws 22 are respectively passed through the first suture holes 11 and second suture holes 12 of the intervertebral disc baffle 1 to the side away from the wound on the intervertebral disc m. The ends of the sutures 21, which pass through the first suture hole 11 and the second suture hole 12, are then tied tightly to fix the intervertebral disc baffle 1 between the two vertebral bodies n, covering the wound on the intervertebral disc m. Exemplarily, in this embodiment of the invention, the intervertebral disc baffle 1, through two sets of first suture holes 11 and second suture holes 12 at the four corners, connects four orthopedic screws connected by four sutures 21. Two screws are implanted in the vertebral body n above the intervertebral disc m, and two screws are implanted in the vertebral body n below the intervertebral disc m, achieving multi-point uniform fixation, ensuring the stability of the intervertebral disc baffle 1, and preventing it from easily falling off.

[0033] The device for preventing recurrence of intervertebral disc herniation provided in this embodiment of the invention involves placing a disc baffle 1 above the wound surface of the intervertebral disc m after nucleotomy. The first suture holes 11 and second suture holes 12 arranged in groups on the disc baffle 1 provide space for threading. Orthopedic screws 22 corresponding to the first suture holes 11 and second suture holes 12 are then implanted into the vertebral bodies n on both sides of the intervertebral disc m. Sutures 21 connecting the orthopedic screws 22 are then led out through the first suture holes 11 and second suture holes 12 and tightened, thus positioning the disc baffle 1 to cover the outside of the wound surface of the intervertebral disc m. When the intervertebral disc m shows a tendency to bulge outwards again after surgery, the disc baffle 1 can block the bulging area of ​​the intervertebral disc m, preventing further proliferation and achieving a corrective effect. This effectively solves the technical problem of recurrence of intervertebral disc herniation after nucleotomy in patients with spinal disc herniation.

[0034] It should be noted that the device for preventing recurrence of intervertebral disc herniation provided in this embodiment can not only be directly implanted into the patient's spine after nucleotomy to prevent recurrence, but also, when an examination reveals that the patient's intervertebral disc is showing signs of protrusion and mild symptoms, timely surgical implantation can be performed to press and block the protruding intervertebral disc using the intervertebral disc baffle 1, achieving subsequent correction.

[0035] For example, refer to Figure 8In another implementation of this utility model, taking the fixing component 2 corresponding to the first suture hole 11 as an example, a suture 21 can be passed through the connecting hole at the end of the orthopedic screw 22, and then both ends can be passed through the first suture hole 11 and tied tightly to achieve single-sided connection and fixation. Depending on the actual situation, this method can be used in parallel with the previous method of passing two sutures 21 through the first suture hole 11 and the second suture hole 12 respectively to fix the intervertebral disc retainer 1, so as to improve adaptability.

[0036] For example, refer to Figure 9 In another implementation of this utility model, the dimensions of the intervertebral disc baffle 1 in the rectangular width direction can be adapted to the distance between the vertebral bodies n on both sides of the intervertebral disc m on the patient's spine. For the spinal dimensions of adults, the width of the intervertebral disc baffle 1 is set to be slightly smaller than the distance between the two vertebral bodies n. This allows the intervertebral disc baffle 1 to be fully embedded between the two vertebral bodies n during use. In this case, the orthopedic screw 22 can be implanted from the inner surface of the gap between the two vertebral bodies n. Furthermore, the side facing the intervertebral disc m can be set as a convex arc surface to ensure contact with the intervertebral disc m and improve the pressing and blocking effect. With this specification of intervertebral disc baffle 1, its two sides in the width direction will not abut against the sides of the two vertebral bodies n. When the patient moves and the two vertebral bodies n move relative to each other, the intervertebral disc baffle 1 is prevented from interfering with, squeezing, or bumping against the two vertebral bodies n, reducing the space-occupying effect of the intervertebral disc baffle 1, reducing contact stimulation to the nerves around the patient's spine, and is more conducive to the patient's recovery.

[0037] For example, such as Figure 6 As shown, in another possible implementation of this utility model, the intervertebral disc baffle 1 is provided with three sets of first suture holes 11 and second suture holes 12. Depending on the actual condition of the patient's spine, different numbers of first suture holes 11 and second suture holes 12 can be provided to facilitate the selection of the implantation location for the orthopedic screw 22, improving adaptability and implantation stability. This utility model embodiment does not limit the number of sets or the spacing of the first suture holes 11 and second suture holes 12.

[0038] Optionally, the axes of the first suture hole 11 and the second suture hole 12 are arranged at an angle to the side surface of the intervertebral disc retainer 1. Exemplarily, in an embodiment of this utility model, such as... Figure 4As shown, by setting the first suture hole 11 and the second suture hole 12 to be arranged at an angle to the side of the intervertebral disc retainer 1, the suture 21, when passing through the first suture hole 11 and the second suture hole 12 to the side of the intervertebral disc retainer 1 near the intervertebral disc m, will extend in a direction towards the outer edge of the intervertebral disc retainer 1. This facilitates the oblique implantation of the orthopedic screw 22 into the two vertebral bodies n during implantation surgery. This avoids excessive tightness between the suture 21 and the opening edge of the first suture hole 11 or the second suture hole 12 after implantation and tightening, preventing wear after prolonged use and improving the overall service life.

[0039] Optionally, the intervertebral disc retainer 1 is provided with a suture groove 13, which connects to the first suture hole 11 and the second suture hole 12 in the same group. For example, refer to... Figure 5 In this embodiment of the invention, by providing a suture groove 13 between the first suture hole 11 and the second suture hole 12 in the same group, the suture 21 segment located between the first suture hole 11 and the second suture hole 12 will be placed in the suture groove 13 after the orthopedic screw 22 is implanted and tightened. The suture groove 13 limits and stores the suture 21, avoiding relative sliding and wear of the suture 21 relative to the surface of the intervertebral disc baffle 1 after surgery, and further improving the overall service life.

[0040] Optionally, an elastic material ring 14 is provided on the side of the intervertebral disc retainer 1. For example, refer to... Figure 7 In this embodiment of the invention, an elastic material ring 14, such as silicone, polyurethane, or hydrogel, is provided around the side of the intervertebral disc baffle 1. Furthermore, the side corners of the intervertebral disc baffle 1 are also provided with rounded chamfers. By utilizing its smooth and elastic edges to contact the vertebral body n of the patient's spine, the local stress at the contact point during the implantation process and subsequent close proximity can be effectively reduced, thus avoiding any impact on the patient's bone health.

[0041] Optionally, the intervertebral disc retainer 1 is made of titanium or titanium alloy. Exemplarily, in this embodiment of the invention, the intervertebral disc retainer 1 is made of pure titanium or titanium alloy, which has high strength and is lightweight. As a structure implanted in the patient's body, it has strong toughness, ensuring strength while allowing for bending and adjustment according to actual surgical needs, thus reducing the burden on the patient after surgery.

[0042] Optionally, the thickness of the intervertebral disc baffle 1 ranges from 0.5 to 2 mm.

[0043] Optionally, the orthopedic screw 22 has a post 221 extending towards its tail end on its side wall, the post 221 being arranged at an acute angle to the axis of the orthopedic screw 22. Exemplarily, in this embodiment of the invention, by providing a post 221 extending towards its tail end on the side wall of the orthopedic screw 22, which serves as an anchor, after implantation into the patient's vertebral body n, the post 221 can hook onto the inner wall of the implanted bone tunnel, thereby providing resistance when the orthopedic screw 22 has a tendency to move outward, preventing the orthopedic screw 22 from falling out, and improving the installation stability of the device.

[0044] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0045] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for preventing recurrence of intervertebral disc herniation, characterized in that, include: Intervertebral disc retainer (1) and fixation assembly (2), The intervertebral disc baffle (1) is provided with a first suture hole (11) and a second suture hole (12) at intervals; The fixation component (2) includes sutures (21) and orthopedic screws (22). The fixation component (2) is provided with multiple sets, each corresponding to the first suture hole (11) and the second suture hole (12). One end of the suture (21) corresponding to the first suture hole (11) is connected to the orthopedic screw (22) for connecting the vertebral body on one side of the intervertebral disc, and the other end passes through the first suture hole (11) to the other side of the intervertebral disc baffle (1). One end of the suture (21) corresponding to the second suture hole (12) is connected to the orthopedic screw (22) for connecting the vertebral body on the other side of the intervertebral disc, and the other end passes through the second suture hole (12) to the other side of the intervertebral disc baffle (1) and is connected to the suture (21) that passes through the first suture hole (11).

2. The device for preventing recurrence of intervertebral disc herniation according to claim 1, characterized in that, Multiple sets of the first suture hole (11) and the second suture hole (12) are provided, and the multiple sets of the first suture hole (11) and the second suture hole (12) are evenly spaced along the side of the intervertebral disc baffle (1).

3. The device for preventing recurrence of intervertebral disc herniation according to claim 2, characterized in that, The axes of the first suture hole (11) and the second suture hole (12) are arranged at an angle to the side of the intervertebral disc baffle (1).

4. The device for preventing recurrence of intervertebral disc herniation according to claim 2, characterized in that, The intervertebral disc baffle (1) is provided with a suture groove (13), which connects the first suture hole (11) and the second suture hole (12) in the same group.

5. A device for preventing recurrence of intervertebral disc herniation according to any one of claims 1 to 4, characterized in that, The side profile of the intervertebral disc baffle (1) is rectangular.

6. The device for preventing recurrence of intervertebral disc herniation according to claim 5, characterized in that, The intervertebral disc baffle (1) has an elastic material ring (14) on its side.

7. The device for preventing recurrence of intervertebral disc herniation according to claim 5, characterized in that, The intervertebral disc baffle (1) has a rounded chamfer at the side corner.

8. The device for preventing recurrence of intervertebral disc herniation according to claim 5, characterized in that, The intervertebral disc baffle (1) is made of titanium or titanium alloy.

9. A device for preventing recurrence of intervertebral disc herniation according to claim 5, characterized in that, The thickness of the intervertebral disc baffle (1) ranges from 0.5 to 2 mm.

10. A device for preventing recurrence of intervertebral disc herniation according to any one of claims 1 to 4, characterized in that, The orthopedic screw (22) has a stud (221) extending toward the tail end on its side wall, and the stud (221) is arranged at an acute angle to the axis of the orthopedic screw (22).

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