Positioning and fixing device for thoracolumbar fusion cage

Abstract

The utility model discloses a thoracolumbar fusion cage positioning and fixing device, which belongs to the technical field of thoracolumbar interbody fusion cages and comprises a thoracolumbar fusion cage, a first through hole, a second through hole, a fixing screw, a positioning bolt, a first connecting rod, a first sleeve plate, a first positioning screw and a first reinforcing screw. A first through hole is formed in the end portion of the thoracolumbar fusion cage, a second through hole is formed in one side of the thoracolumbar fusion cage, a fixing screw is arranged in the first through hole in a penetrating mode and penetrates out of the second through hole, a positioning bolt is arranged in the center of one end of the thoracolumbar fusion cage in a penetrating mode, and a first connecting rod is arranged on the positioning bolt in a sleeved mode. A second connecting rod is arranged below the first connecting rod, the first connecting plate is sleeved with a first sleeve plate, the first sleeve plate is fixed through a first positioning screw, one end of the first sleeve plate is provided with a first reinforcing screw in a penetrating mode, and the second connecting rod is provided with a structure which is the same as that of the first connecting rod, so that firm connection of the thoracolumbar fusion cage is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of thoracolumbar intervertebral fusion devices, in particular to a thoracolumbar intervertebral fusion device positioning and fixing device. Background Art

[0002] A thoracolumbar fusion device is a passive implant device used to treat thoracolumbar diseases. It can stabilize the spine. By fixing the vertebrae, the thoracolumbar fusion device can stabilize the spine, reduce or eliminate spinal instability caused by the disease, and promote bone tissue growth and fusion. The thoracolumbar fusion device can also replace the intervertebral disc to provide support, promote the growth and healing of bone tissue between vertebrae, and thus achieve the purpose of fusion.

[0003] However, many thoracolumbar fusion devices lack the cooperation of positioning devices to achieve targeted positioning and fixation, which may cause displacement or sliding of the thoracolumbar fusion device, reduce the treatment effect and even cause some complications. Therefore, we propose a thoracolumbar fusion device positioning and fixation. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a thoracolumbar fusion device positioning and fixing device, which overcomes the deficiencies in the prior art and aims to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thoracolumbar fusion device positioning and fixing device, comprising a thoracolumbar fusion device, a symmetrical first through-hole is opened at the plane end of the thoracolumbar fusion device, a symmetrical second through-hole is opened at one side of the thoracolumbar fusion device, a fixing screw is passed through the first through-hole, and a positioning bolt is passed through the center of the plane end of the thoracolumbar fusion device;

[0006] A first connecting rod is sleeved on the positioning bolt, a first set of plates is sleeved on the first connecting rod, a first positioning screw is arranged on the first set of plates, a first reinforcing screw is passed through the end of the first set of plates, a second connecting rod is arranged below the first connecting rod, a second set of plates is sleeved on the second connecting rod, a second positioning screw is arranged on the second set of plates, and a second reinforcing screw is passed through the end of the second set of plates.

[0007] As a preferred technical solution of the utility model, a positioning bolt is threadedly connected to the center of the end of the thoracolumbar fusion device to achieve a firm and quick connection between the positioning piece and the thoracolumbar fusion device, thereby improving the overall tightness of the device.

[0008] As a preferred technical solution of the utility model, the first through hole and the second through hole penetrate each other, a fixing screw is inserted into the second through hole, and the connection between the thoracolumbar fusion device and the patient's vertebrae is achieved by inserting the fixing screw.

[0009] As a preferred technical solution of the utility model, four through holes consisting of the first through hole and the second through hole are provided, four fixing screws are symmetrically provided, and multiple fixing screws are connected to enhance the stability of the thoracolumbar fusion device.

[0010] As a preferred technical solution of the utility model, a first connecting rod is welded to one side of the positioning bolt, and a second connecting rod is welded to one side of the first connecting rod. The reinforcing screws are arranged through the connecting rods, thereby further improving the fixing strength of the thoracolumbar fusion device.

[0011] As a preferred technical solution of the utility model, the first connecting rod and the second connecting rod are both "U"-shaped, and a first set of plates are movably provided on the outer side of the first connecting rod, and a second set of plates are movably provided on the outer side of the second connecting rod. The sliding fixation of the sets of plates ensures accurate positioning and fixation of the fusion device during the operation.

[0012] Beneficial effects of the utility model:

[0013] The positioning and fixing device of the utility model has a simple structure and is convenient and quick to operate, which effectively improves the efficiency of the operation; the sleeve plate is movably connected, so that the position of the reinforcing screw can be adjusted. For different skeletons and when the thoracolumbar fusion device needs to be fixed on a more solid vertebra during installation, it can be adjusted according to needs, and has wider applicability and stronger firmness. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the connection between the positioning member of the utility model and the thoracolumbar fusion device;

[0016] Figure 3 This is a schematic diagram of the structure of the positioning member of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the positioning member of the utility model after being extended.

[0018] In the figure: 1. thoracolumbar fusion device; 2. first perforation; 3. second perforation; 4. fixing screw; 5. positioning bolt; 6. first connecting rod; 7. first set of plates; 8. first positioning screw; 9. first reinforcement screw; 10. second connecting rod; 11. second set of plates; 12. second positioning screw; 13. second reinforcement screw. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example

[0021] See also Figure 1-Figure 4 A thoracolumbar fusion device positioning and fixing device comprises a thoracolumbar fusion device 1, a symmetrical first through hole 2 is opened at the plane end of the thoracolumbar fusion device 1, a symmetrical second through hole 3 is opened at one side of the thoracolumbar fusion device 1, a fixing screw 4 is passed through the first through hole 2, and a positioning bolt 5 is passed through the center of the plane end of the thoracolumbar fusion device 1;

[0022] A first connecting rod 6 is sleeved on the positioning bolt 5, a first set plate 7 is sleeved on the first connecting rod 6, a first positioning screw 8 is provided on the first set plate 7, a first reinforcing screw 9 is passed through the end of the first set plate 7, a second connecting rod 10 is provided below the first connecting rod 6, a second set plate 11 is sleeved on the second connecting rod 10, a second positioning screw 12 is provided on the second set plate 11, and a second reinforcing screw 13 is passed through the end of the second set plate 11.

[0023] In this embodiment, the first connecting rod 6 and the second connecting rod 10 are both "U"-shaped, and a first set of plates 7 are movably provided on the outer side of the first connecting rod 6, and a second set of plates 11 are movably provided on the outer side of the second connecting rod 10. The first set of plates 7 and the second set of plates 11 are slid to adjust the positions of the first reinforcing screws 9 and the second reinforcing screws 13.

[0024] In this embodiment, a first connecting rod 6 is welded to one side of the positioning bolt 5, and a second connecting rod 10 is welded to one side of the first connecting rod 6. The first connecting rod 6 and the second connecting rod 10 realize a firm connection between the thoracolumbar fusion device 1 and the positioning fixture, thereby enhancing the stability of the thoracolumbar fusion device 1.

[0025] In this embodiment, four through holes formed by the first through holes 2 and the second through holes 3 are provided, and four fixing screws 4 are symmetrically provided to achieve gap connection between the thoracolumbar fusion device 1 and the upper and lower adjacent vertebrae.

[0026] In this embodiment, the first through hole 2 and the second through hole 3 penetrate each other, and a fixing screw 4 is inserted into the second through hole 3 to improve the accurate positioning and fixation of the thoracolumbar fusion device 1, so that the doctor can implant the fusion device more accurately.

[0027] In this embodiment, a positioning bolt 5 is threadedly connected to the center of the end of the thoracolumbar fusion device 1 , and the positioning bolt 5 enables the positioning and fixing device to be connected to the thoracolumbar fusion device 1 more quickly and firmly.

[0028] Working principle: During the operation, the doctor uses appropriate tools and techniques to implant the thoracolumbar fusion device 1 into the patient's spine, inserts the fixing screws 4 into the first perforation 2 in turn, and then passes through the second perforation 3 to insert into the adjacent vertebrae, and then inserts the positioning bolts 5 to connect the fixing device to the thoracolumbar fusion device 1. Before setting, the best fixing point is selected according to the patient's bone condition, so that the first set of plates 7 slides on the first connecting rod 6 and then adjusts the position of the first reinforcing screw 9 so that it can be inserted into a suitable vertebra for fixation, and then tightens the first positioning screw 8 to achieve the positioning of the first reinforcing screw 9. The position of the second reinforcing screw 13 on the second set of plates 11 is adjusted in the same way, so that the thoracolumbar fusion device 1 can be firmly positioned, thereby improving the surgical effect and reducing the occurrence of postoperative complications.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 indirectly connected 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 according to specific circumstances.

[0030] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A thoracolumbar fusion device positioning and fixing device, comprising a thoracolumbar fusion device (1), characterized in that: A symmetrical first through hole (2) is formed at the plane end of the thoracolumbar fusion device (1), a symmetrical second through hole (3) is formed at one side of the thoracolumbar fusion device (1), a fixing screw (4) is passed through the first through hole (2), and a positioning bolt (5) is passed through the center of the plane end of the thoracolumbar fusion device (1); A first connecting rod (6) is sleeved on the positioning bolt (5), a first set plate (7) is sleeved on the first connecting rod (6), a first positioning screw (8) is arranged on the first set plate (7), a first reinforcing screw (9) is passed through the end of the first set plate (7), a second connecting rod (10) is arranged below the first connecting rod (6), a second set plate (11) is sleeved on the second connecting rod (10), a second positioning screw (12) is arranged on the second set plate (11), and a second reinforcing screw (13) is passed through the end of the second set plate (11).

2. A thoracolumbar fusion device positioning and fixing device according to claim 1, characterized in that: A positioning bolt (5) is threadedly connected to the center of the end of the thoracolumbar fusion device (1).

3. A thoracolumbar fusion device positioning and fixing device according to claim 1, characterized in that: The first through hole (2) and the second through hole (3) penetrate each other, and a fixing screw (4) is inserted into the second through hole (3).

4. A thoracolumbar fusion device positioning and fixing device according to claim 1, characterized in that: There are four through holes formed by the first through holes (2) and the second through holes (3), and there are four fixing screws (4) symmetrically arranged.

5. The thoracolumbar fusion device positioning and fixing device according to claim 1, characterized in that: A first connecting rod (6) is welded to one side of the positioning bolt (5), and a second connecting rod (10) is welded to one side of the first connecting rod (6).

6. A thoracolumbar fusion device positioning and fixing device according to claim 1, characterized in that: The first connecting rod (6) and the second connecting rod (10) are both U-shaped, a first set of plates (7) being movably provided on the outer side of the first connecting rod (6), and a second set of plates (11) being movably provided on the outer side of the second connecting rod (10).

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