Novel spine nail

Abstract

The utility model discloses a novel spine nail, belongs to spine nail technical field, including mounting piece, spacing piece, spacing plate and spacing bolt, the upper surface of spacing plate is equipped with spacing hole, the upper surface of spacing piece is equipped with first fastening groove, the inner bottom wall of first fastening groove is equipped with threaded groove, the spacing hole is equipped with spacing hole, the spacing hole is equipped with spacing bolt. The bottom end of the limiting bolt penetrates through the limiting hole and extends into the threaded groove, the outer surface of the bottom end of the limiting bolt is in threaded connection with the inner wall of the threaded groove, the front face and the back face of the mounting piece are each provided with a limiting end face, the inner wall of the limiting plate makes contact with the two limiting end faces, and therefore the limiting plate is not prone to rotating, and the mounting piece is convenient to use. The limiting hole is formed in the upper surface of the limiting plate, and the bottom end of the limiting bolt penetrates through the limiting hole and is in threaded connection with the inner wall of the threaded groove, so that the limiting plate and the limiting piece can be firmly assembled together, and the limiting plate can play a better limiting role on the limiting piece.

Description

Technical Field

[0001] The utility model relates to the technical field of spinal nails, in particular to a novel spinal nail. Background Art

[0002] Various factors including trauma, disease and degenerative conditions caused by injury or aging can cause an increasing number of spinal conditions and diseases such as scoliosis and other curvature abnormalities, kyphosis, degenerative disc disease, disc herniation, osteoporosis, spondylolisthesis, stenosis, tumors and fractures. Spinal fixation is a modern medical procedure used to treat spinal diseases. With the development of science and technology, minimally invasive spinal technology will become a major trend in the development of spinal fixation technology as a part of traditional surgical technology.

[0003] However, when patients undergo rehabilitation training after surgery, the spinal nails are prone to loosening due to vibration, which can easily cause pain to the patients. Therefore, those skilled in the art provide a new type of spinal nail to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of spinal nail to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A novel spinal nail comprises a mounting piece, a limiting piece, a limiting plate and a limiting bolt, characterized in that a limiting hole is provided on the upper surface of the limiting plate, a first fastening groove is provided on the upper surface of the limiting piece, a threaded groove is provided on the inner bottom wall of the first fastening groove, the bottom end of the limiting bolt passes through the limiting hole and extends to the inside of the threaded groove, the outer surface of the bottom end of the limiting bolt is threadedly connected to the inner wall of the threaded groove, the front side and the back side of the mounting piece are both provided with limiting end faces, and the outer surface of each of the limiting end faces is in contact with the inner wall of the limiting plate.

[0007] As a further solution of the utility model: the inner wall of the mounting member is provided with a first internal thread, the outer surface of the limiting member is provided with a first external thread, and the first internal thread is threadably connected to the first external thread.

[0008] As a further solution of the utility model: a connecting rod is provided on the outside of the mounting member, and a U-shaped groove is provided on the left side and the right side of the mounting member.

[0009] As a further solution of the utility model: the inner walls of the two U-shaped grooves are in contact with the outer surface of the connecting rod, and the bottom surface of the limiting member is in contact with the outer surface of the connecting rod.

[0010] As a further solution of the utility model: the inner wall of the mounting piece is provided with a second internal thread, a pedicle screw is provided inside the mounting piece, the outer surface of the top of the pedicle screw is provided with a second external thread, and the second internal thread is threadably connected to the second external thread.

[0011] As a further solution of the utility model: a through hole is opened on the bottom surface of the mounting piece, and the bottom end of the pedicle screw passes through the through hole and extends to the outside of the mounting piece.

[0012] As a further solution of the utility model: a fixing block is fixedly installed on the upper surface of the pedicle screw, the upper surface of the fixing block contacts the outer surface of the connecting rod, and a second fastening groove is formed on the upper surface of the fixing block.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The novel spinal screw has a limiting end face respectively provided on the front and back sides of the mounting part, and the inner wall of the limiting plate is in contact with the two limiting end faces, so that the limiting plate is not easy to rotate. A limiting hole is provided on the upper surface of the limiting plate, and the bottom end of the limiting bolt passes through the limiting hole and is threadedly connected with the inner wall of the thread groove, so that the limiting plate and the limiting part can be firmly assembled together. The limiting plate can limit the limiting part, thereby effectively preventing the limiting part from rotating, and further preventing the pedicle screw from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a front view of a new type of spinal nail;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of a novel spinal nail in top view;

[0017] Figure 3 It is a three-dimensional structural schematic diagram of a front cross-sectional view of a limiter in a novel spinal nail;

[0018] Figure 4 It is a three-dimensional structural schematic diagram of a front section view of a mounting part in a novel spinal nail.

[0019] In the figure: 1. limiting end face; 2. limiting plate; 3. limiting bolt; 4. first fastening groove; 5. mounting piece; 6. first external thread; 7. first internal thread; 8. U-shaped groove; 9. connecting rod; 10. pedicle screw; 11. limiting piece; 12. limiting hole; 13. thread groove; 14. fixing block; 15. second external thread; 16. through hole; 17. second internal thread; 18. second fastening groove. DETAILED DESCRIPTION

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] See also Figures 1 to 4 In the embodiment of the utility model, a new spinal nail comprises a mounting member 5, a limiting member 11, a limiting plate 2 and a limiting bolt 3. A limiting hole 12 is provided on the upper surface of the limiting plate 2, a first fastening groove 4 is provided on the upper surface of the limiting member 11, a threaded groove 13 is provided on the inner bottom wall of the first fastening groove 4, the bottom end of the limiting bolt 3 passes through the limiting hole 12 and extends to the inside of the threaded groove 13, the outer surface of the bottom end of the limiting bolt 3 is threadedly connected with the inner wall of the threaded groove 13, the front side of the mounting member 5 and the back side of the mounting member 5 are both provided with a limiting end face 1, the outer surface of each limiting end face 1 is in contact with the inner wall of the limiting plate 2, by respectively providing a limiting end face 1 on the front side of the mounting member 5 and the back side of the mounting member 5, the limiting plate 2 can be firmly installed above the mounting member 5, by using the limiting bolt 3 to pass through the limiting hole 12 and be threadedly connected with the threaded groove 13, the limiting plate 2 and the limiting member 11 can be firmly assembled together.

[0023] The inner wall of the mounting member 5 is provided with a first internal thread 7, and the outer surface of the limiting member 11 is provided with a first external thread 6, and the first internal thread 7 is threadedly connected to the first external thread 6. By threading the first internal thread 7 to the first external thread 6, the limiting member 11 and the mounting member 5 can be firmly assembled together. A connecting rod 9 is provided on the outside of the mounting member 5, and a U-shaped groove 8 is provided on the left side and the right side of the mounting member 5. The inner walls of the two U-shaped grooves 8 are in contact with the outer surface of the connecting rod 9, and the bottom surface of the limiting member 11 is in contact with the outer surface of the connecting rod 9. By providing a U-shaped groove 8 on the left side and the right side of the mounting member 5, it is convenient for the connecting rod 9 to pass through from under the limiting member 11. When the limiting member 11 is firmly installed, it can limit the connecting rod 9.

[0024] The inner wall of the mounting member 5 is provided with a second internal thread 17, a pedicle screw 10 is provided inside the mounting member 5, and a second external thread 15 is provided on the outer surface of the top of the pedicle screw 10, and the second internal thread 17 is threadedly connected with the second external thread 15. By threading the second internal thread 17 with the second external thread 15, the pedicle screw 10 and the mounting member 5 can be firmly assembled together, and a through hole 16 is provided on the bottom surface of the mounting member 5, and the bottom end of the pedicle screw 10 passes through the through hole 16 and extends to the outside of the mounting member 5. By providing a through hole 16 on the bottom surface of the mounting member 5 The through hole 16 allows the bottom end of the pedicle screw 10 to extend to the bottom of the mounting member 5. After being connected by the pedicle screw 10, the entire spine can be fixed more strongly. A fixing block 14 is fixedly installed on the upper surface of the pedicle screw 10. The upper surface of the fixing block 14 contacts the outer surface of the connecting rod 9. A second fastening groove 18 is provided on the upper surface of the fixing block 14. By providing the second fastening groove 18 on the upper surface of the fixing block 14, the doctor can conveniently rotate the pedicle screw 10 by inserting a tool into the second fastening groove 18.

[0025] The working principle of the utility model is: first, the doctor inserts the bottom end of the pedicle screw 10 through the through hole 16, and then the doctor can use a tool to insert the inside of the second fastening groove 18 to drive the pedicle screw 10 to rotate. The pedicle screw 10 can be assembled with the mounting member 5 by rotation. Then the doctor places the connecting rod 9 inside the two U-shaped grooves 8, and then the doctor places the limiting member 11 above the mounting member 5. Then the doctor uses a tool to insert the inside of the first fastening groove 4 and rotate to assemble the limiting member 11 with the mounting member 5. Then the doctor clamps the limiting plate 2 with the two limiting end faces 1, and finally the bottom end of the limiting bolt 3 passes through the limiting hole 12 and is threadedly connected with the inner wall of the threaded groove 13.

[0026] The above are only preferred specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and utility model concept of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes that fall within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A novel spinal nail, comprising a mounting member (5), a limiting member (11), a limiting plate (2) and a limiting bolt (3), characterized in that: The upper surface of the limiting plate (2) is provided with a limiting hole (12), the upper surface of the limiting member (11) is provided with a first fastening groove (4), the inner bottom wall of the first fastening groove (4) is provided with a threaded groove (13), the bottom end of the limiting bolt (3) passes through the limiting hole (12) and extends into the inside of the threaded groove (13), the outer surface of the bottom end of the limiting bolt (3) is threadedly connected to the inner wall of the threaded groove (13), the front side of the mounting member (5) and the back side of the mounting member (5) are both provided with limiting end faces (1), and the outer surface of each limiting end face (1) is in contact with the inner wall of the limiting plate (2).

2. A novel spinal nail according to claim 1, characterized in that: The inner wall of the mounting member (5) is provided with a first internal thread (7), the outer surface of the limiting member (11) is provided with a first external thread (6), and the first internal thread (7) is threadedly connected to the first external thread (6).

3. A novel spinal nail according to claim 1, characterized in that: A connecting rod (9) is provided on the outside of the mounting member (5), and a U-shaped groove (8) is provided on the left side surface of the mounting member (5) and the right side surface of the mounting member (5).

4. A novel spinal nail according to claim 3, characterized in that: The inner walls of the two U-shaped grooves (8) are in contact with the outer surface of the connecting rod (9), and the bottom surface of the limiting member (11) is in contact with the outer surface of the connecting rod (9).

5. A novel spinal nail according to claim 1, characterized in that: The inner wall of the mounting member (5) is provided with a second internal thread (17), a pedicle screw (10) is provided inside the mounting member (5), a second external thread (15) is provided on the outer surface of the top end of the pedicle screw (10), and the second internal thread (17) is threadedly connected to the second external thread (15).

6. A novel spinal nail according to claim 5, characterized in that: A through hole (16) is formed on the bottom surface of the mounting member (5), and the bottom end of the pedicle screw (10) passes through the through hole (16) and extends to the outside of the mounting member (5).

7. A novel spinal nail according to claim 6, characterized in that: A fixing block (14) is fixedly mounted on the upper surface of the pedicle screw (10), the upper surface of the fixing block (14) is in contact with the outer surface of the connecting rod (9), and a second fastening groove (18) is formed on the upper surface of the fixing block (14).

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