Bone grafting device for artificial bone or autogenous bone

Abstract

The utility model relates to the field of bone grafting devices, in particular to an artificial bone or autogenous bone grafting device which comprises a placing structure, and a bone grafting assembly is connected to the center of one end of the placing structure in a sliding mode. The bone grafting assembly comprises a connecting rod, a bone pushing plate welded to the outer wall of one end of the connecting rod, a threaded rod welded to the outer wall of the other end of the connecting rod, a threaded connector in threaded connection to the outer wall of the threaded rod and a sliding pipe in sliding connection to the outer wall of the connecting rod. The containing structure comprises a containing pipe, a conical table welded to the outer wall of one end of the containing pipe, a base arranged at the other end of the containing pipe, a containing hole formed in the center of the base and a connecting groove formed in the center of one end of the base. According to the utility model, the bone tissues in the intervertebral space can be continuously tamped, so that the tamping effect is realized, and the speed, namely the effectiveness, in the operation process can be improved; nerve harassment caused by repeated penetration into the intervertebral disc is avoided, and nerve injury caused by nerve traction during bone grafting is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bone grafting devices, in particular to a bone grafting device for artificial bones or autogenous bones. Background Art

[0002] Patients with lumbar spinal stenosis and lumbar disc herniation, especially those with severe symptoms and ineffective conservative treatment, need surgical treatment. Lumbar fusion is currently the main surgical method for treating lumbar spinal stenosis and lumbar disc herniation.

[0003] During lumbar fusion surgery, the patient lies prone and a posterior midline incision is often used to expose the lumbar spine. The lamina and part of the articular process are removed to expose the intervertebral disc. After the intervertebral disc is removed, intervertebral bone grafting and fusion cage installation are performed.

[0004] Currently, the commonly used bone grafting method is manual bone grafting and compaction, which is inefficient; or bone grafting using a bone grafting funnel, but generally only small bone tissue can be implanted, and larger bone tissue is difficult to implant. Utility Model Content

[0005] The purpose of the utility model is to address the above-mentioned problems and shortcomings and to propose a bone grafting device for artificial bone or autologous bone: the device knocks the screw joint, pushes the bone plate to exert force on the bone tissue through the connecting rod, and continues to tamp the bone tissue in the intervertebral space, which plays a compacting role, thereby improving the speed of the surgical process, that is, the effectiveness; avoids repeated penetration of the intervertebral disc to harass the nerves, avoids the time-consuming bone grafting process, and avoids nerve damage caused by pulling the nerves, thereby solving the problems of slow efficiency and only being able to implant smaller bone tissues.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A bone graft for artificial bone or autologous bone, comprising a placement structure, wherein a bone graft assembly is slidably connected to the center of one end of the placement structure; the bone graft assembly comprises a connecting rod, a bone pushing plate welded to the outer wall of one end of the connecting rod, a threaded rod welded to the outer wall of the other end of the connecting rod, a screw joint threadedly connected to the outer wall of the threaded rod, and a sliding tube slidably connected to the outer wall of the connecting rod; the placement structure comprises a placement tube, a conical platform welded to the outer wall of one end of the placement tube, a base provided at the other end of the placement tube, a placement hole provided at the center of the base, and a connecting groove provided at the center of one end of the base;

[0008] According to the above scheme: knocking the screw joint, pushing the bone plate to apply force on the bone tissue through the connecting rod, and continuing to tamp the bone tissue in the intervertebral space to play a compacting role, which can increase the speed of the surgical process, that is, the effectiveness; avoid repeatedly penetrating the intervertebral disc and harassing the nerves, avoid the time-consuming bone grafting process, and avoid nerve damage caused by pulling the nerves.

[0009] Preferably, a fixing tube is welded to the outer wall of one end of the sliding tube, and a connecting hole is opened on the outer wall at the center of the fixing tube, the outer wall of the connecting rod is slidably connected to the inner wall of the sliding tube, and the bone pushing plate is slidably connected to the inner wall of the fixing tube.

[0010] Preferably, the outer wall of one end of the placement tube is inserted into the connecting groove of the base, and the inner diameter of the placement tube and the placement hole of the base are the same.

[0011] Preferably, an arc-shaped groove is provided on the outer wall of one end of the base, and a fixing groove is provided at one end of the placement hole of the base, and a suction cup is provided at one end of the arc-shaped groove of the base, and one end of the suction cup is inserted into the fixing groove.

[0012] Preferably, the outer wall of one end of the conical platform on the placement tube contacts the outer wall of one side of the fixing tube, and the conical platform is connected to the placement tube, and a guide groove is provided on the outer wall of one end of the conical platform.

[0013] Preferably, the outer wall of the screw joint is provided with two anti-slip protrusions distributed at equal distances, and the outer wall of the sliding tube is provided with one anti-slip protrusion distributed at equal distances, the sliding tube and the outer wall of the screw joint are slidably connected to the inner wall of the placement tube, and the screw joint is located at one end of the placement hole of the base;

[0014] According to the above scheme: insert one end of the suction cup into the fixed groove of the base, the base is adsorbed on the working plane through the suction cup, and then insert one end of the placement tube into the connecting groove on the base. After the assembly is completed, it is convenient to fix the bone graft component to ensure stability.

[0015] Preferably, the outer wall of one side of the bone pushing plate and the inner wall of the fixing tube are both provided with friction surfaces, and the outer wall of one end of the screw joint is in contact with one end of the sliding tube.

[0016] The beneficial effects of the utility model are:

[0017] 1. Insert one end of the suction cup into the fixing groove of the base. The base is adsorbed on the working surface through the suction cup. Then insert one end of the placement tube into the connecting groove on the base. After the assembly is completed, it is convenient to fix the bone graft component and ensure stability.

[0018] 2. Knock the screw joint and push the bone plate to apply force on the bone tissue through the connecting rod, and continue to tamp the bone tissue in the intervertebral space to play a compacting role, which can increase the speed of the operation, that is, the effectiveness; avoid repeated penetration of the intervertebral disc and harassment of the nerves, and avoid the time-consuming bone grafting process and nerve damage caused by pulling the nerves. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the expanded structure of an artificial bone or autologous bone implant proposed by the present invention;

[0020] Figure 2This is a schematic diagram of the overall structure of a bone grafting component of an artificial bone or autologous bone grafting device proposed by the present invention;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of a placement tube of a bone grafting device for artificial bone or autogenous bone proposed in the present invention;

[0022] Figure 4 This is a schematic diagram of the overall structure of an artificial bone or autologous bone implant proposed by the present invention.

[0023] In the figure: 1 placement structure, 2 bone graft assembly, 3 connecting rod, 4 bone pushing plate, 5 threaded rod, 6 screw joint, 7 sliding tube, 8 fixing tube, 9 connecting hole, 10 anti-slip protrusion 1, 11 anti-slip protrusion 2, 12 friction surface, 13 placement tube, 14 conical platform, 15 guide groove, 16 base, 17 placement hole, 18 connecting groove, 19 fixing groove, 20 suction cup. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example

[0025] Reference Figure 1-2 and Figure 4 , a bone grafting device for artificial bone or autologous bone, comprising a placement structure 1, a bone grafting component 2 being slidably connected to the center of one end of the placement structure 1;

[0026] The bone grafting assembly 2 includes a connecting rod 3, a bone pushing plate 4 welded to the outer wall of one end of the connecting rod 3, a threaded rod 5 welded to the outer wall of the other end of the connecting rod 3, a screw joint 6 threadedly connected to the outer wall of the threaded rod 5, and a sliding tube 7 slidably connected to the outer wall of the connecting rod 3. By knocking the screw joint 6 in conjunction with the connecting rod 3 and the bone pushing plate 4, the bone tissue is pushed out of the fixing tube 8, and continuous knocking facilitates compaction.

[0027] A fixed tube 8 is welded to the outer wall of one end of the sliding tube 7, and a connecting hole 9 is opened on the outer wall at the center of the fixed tube 8. The outer wall of the connecting rod 3 is slidably connected to the inner wall of the sliding tube 7, and the bone pushing plate 4 is slidably connected to the inner wall of the fixed tube 8.

[0028] The outer wall of one end of the placement tube 13 is inserted into the connecting groove 18 of the base 16, and the inner diameter of the placement tube 13 and the placement hole 17 of the base 16 are the same;

[0029] The outer wall of the screw joint 6 is provided with anti-slip protrusions 11 distributed at equal distances, and the outer wall of the sliding tube 7 is provided with anti-slip protrusions 10 distributed at equal distances. The sliding tube 7 and the outer wall of the screw joint 6 are slidably connected to the inner wall of the placement tube 13, and the screw joint 6 is located at one end of the placement hole 17 of the base 16. The anti-slip protrusions 10 and the anti-slip protrusions 11 on the outer walls of the screw joint 6 and the sliding tube 7 increase the friction between the two, ensure stability when holding, and avoid slipping during hand-held operations.

[0030] The outer wall of one side of the bone pushing plate 4 and the inner wall of the fixed tube 8 are both provided with a friction surface 12, and the outer wall of one end of the screw joint 6 is in contact with one end of the sliding tube 7. The friction surface between the fixed tube 8 and the bone pushing plate 4 increases the friction force of the bone tissue inside the fixed tube 8, and cooperates with the pressure of the bone tissue placed on the fixed tube 8. The bone tissue is fixed by using pressure and friction, which is convenient for fixing larger bone tissue. Example

[0031] Reference Figure 3-4 The placement structure 1 includes a placement tube 13, a conical platform 14 welded to the outer wall of one end of the placement tube 13, a base 16 provided at the other end of the placement tube 13, a placement hole 17 provided at the center of the base 16, and a connecting groove 18 provided at the center of one end of the base 16. When not in use, the screw joint 6 on the connecting rod 3 enters the placement tube 13 under the guidance of the guide groove 15 on the inner side of the conical platform 14 at one end of the placement tube 13. At this time, the bone grafting assembly 2 is located in the placement tube 13 as a whole, and the sliding tube 7 and the screw joint 6 at one end of the connecting rod 3 are located inside the base 16 and the placement tube 13, which is convenient for placement;

[0032] An arc-shaped groove is provided on the outer wall of one end of the base 16, and a fixing groove 19 is provided at one end of the placement hole 17 of the base 16. A suction cup 20 is provided at one end of the arc-shaped groove of the base 16, and one end of the suction cup 20 is inserted into the fixing groove 19. The increase in the area of ​​the base 16 and the combination with the suction cup 20 further improve the overall stability when placed.

[0033] The outer wall of one end of the conical platform 14 on the placement tube 13 contacts the outer wall of one side of the fixing tube 8, and the conical platform 14 is connected to the placement tube 13. A guide groove 15 is formed on the outer wall of one end of the conical platform 14.

[0034] Working principle: When in use, assemble the whole, align the threaded rod 5 at one end of the connecting rod 3 with the connecting hole 9 at the center of the fixed tube 8, insert the connecting rod 3 and the threaded rod 5 into the sliding tube 7, slide the bone push plate 4 into the inner wall of the fixed tube 8, and thread the screw joint 6 into the outer wall of the threaded rod 5 to complete the assembly of the main body. Insert one end of the suction cup 20 into the fixing groove 19 of the base 16, and the base 16 is adsorbed on the working plane through the suction cup 20. Then insert one end of the placement tube 13 into the connecting groove 18 on the base 16 to complete the assembly of the placement structure 1, which is convenient for stable storage of the bone graft component 2 ; Place the bone tissue on the inner wall of the fixing tube 8, and the bone tissue is fixed on the inner wall of the fixing tube 8 by extrusion and friction and contacts the outer wall of the bone pushing plate 4. The friction surface 12 on the inner wall of the fixing tube 8 increases the friction, which is convenient for fixing the bone tissue. When in use, knock the screw joint 6, and the screw joint 6 transfers the force to the connecting rod 3 and the bone pushing plate 4. The connecting rod 3 and the bone pushing plate 4 slide and gradually push the bone tissue out from the inner wall of the fixing tube 8. The pushed bone tissue is located in the intervertebral space, and the screw joint 6 can continue to be knocked. The bone pushing plate 4 applies force on the bone tissue through the connecting rod 3, tamping the bone tissue in the intervertebral space, thereby compacting it.

[0035] The present invention is described in detail with reference to the examples of the exemplary embodiments. However, it will be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the present invention can be made without exceeding the scope of protection of the present invention, which is determined by the appended claims. The foregoing description of the specific exemplary embodiments of the present invention is not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the present invention and various different options and changes. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A bone implant for artificial bone or autogenous bone, comprising a placement structure (1), characterized in that: A bone grafting component (2) is slidably connected at the center of one end of the placement structure (1); The bone grafting assembly (2) comprises a connecting rod (3), a bone pushing plate (4) welded to the outer wall of one end of the connecting rod (3), a threaded rod (5) welded to the outer wall of the other end of the connecting rod (3), a screw joint (6) threadedly connected to the outer wall of the threaded rod (5), and a sliding tube (7) slidably connected to the outer wall of the connecting rod (3); The placement structure (1) includes a placement tube (13), a conical platform (14) welded to the outer wall of one end of the placement tube (13), a base (16) provided at the other end of the placement tube (13), a placement hole (17) provided at the center of the base (16), and a connecting groove (18) provided at the center of one end of the base (16).

2. The artificial bone or autologous bone graft according to claim 1, characterized in that: A fixed tube (8) is welded to the outer wall of one end of the sliding tube (7), and a connecting hole (9) is opened on the outer wall at the center of the fixed tube (8); the outer wall of the connecting rod (3) is slidably connected to the inner wall of the sliding tube (7), and the bone pushing plate (4) is slidably connected to the inner wall of the fixed tube (8).

3. The artificial bone or autologous bone grafting device according to claim 1, characterized in that: The outer wall of one end of the placement tube (13) is inserted into the connecting groove (18) of the base (16), and the inner diameters of the placement tube (13) and the placement hole (17) of the base (16) are the same.

4. The bone grafting device for artificial bone or autologous bone according to claim 1, characterized in that: An arc-shaped groove is provided on the outer wall of one end of the base (16), and a fixing groove (19) is provided on the base (16) at one end of the placement hole (17). A suction cup (20) is provided on the base (16) at one end of the arc-shaped groove, and one end of the suction cup (20) is inserted into the fixing groove (19).

5. The artificial bone or autologous bone grafting device according to claim 1, characterized in that: The outer wall of one end of the conical platform (14) on the placement tube (13) contacts the outer wall of one side of the fixed cylinder (8), and the conical platform (14) is connected to the placement tube (13). A guide groove (15) is provided on the outer wall of one end of the conical platform (14).

6. The artificial bone or autologous bone graft according to claim 1, characterized in that: The outer wall of the screw joint (6) is provided with two anti-slip protrusions (11) distributed at equal distances, and the outer wall of the sliding tube (7) is provided with one anti-slip protrusion (10) distributed at equal distances. The outer walls of the sliding tube (7) and the screw joint (6) are slidably connected to the inner wall of the placement tube (13), and the screw joint (6) is located at one end of the placement hole (17) of the base (16).

7. The artificial bone or autologous bone graft according to claim 1, characterized in that: The outer wall of one side of the bone pushing plate (4) and the inner wall of the fixing tube (8) are both provided with a friction surface (12), and the outer wall of one end of the screw joint (6) contacts one end of the sliding tube (7).

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