Self-stabilizing lumbar interbody fusion cage for anterior interbody fusion

Abstract

The present invention relates to the field of medical device technology, and in particular to a self-stabilizing lumbar sacral intervertebral fusion device for anterior intervertebral fusion. Its technical solution includes: an intervertebral fusion device body, a stabilizing component, a fusion hole, a mounting groove, a gasket, a locking screw, a top block, a limit groove, a locking rod, a limit block, a fixing frame and a reset spring. The intervertebral fusion device body is symmetrically provided with mounting grooves, and the mounting grooves are V-shaped in the intervertebral fusion device body, and a fusion hole is provided through the middle of the intervertebral fusion device body; the device adjusts the position of the threaded rod by a knob, so that fine adjustments can be made as needed during the operation to ensure the correct position and stability of the intervertebral fusion device, and the top block and the inclined groove of the locking rod are matched with each other by rotating the locking screw in the locking rotation groove, and the locking rod ensures the fixity of the threaded rod after installation to prevent excessive movement or dislocation, thereby improving the success rate of the operation and the patient's rehabilitation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a self-stabilizing lumbar sacral intervertebral fusion device for anterior intervertebral fusion. Background Art

[0002] Lumbar fusion is one of the important methods for treating spinal diseases, and more and more people are receiving intervertebral fusion treatment every year. Intervertebral fusion includes autologous bone transplantation and allogeneic bone transplantation. The clinical application of intervertebral fusion is limited due to the limited source of autologous bone, increased donor site trauma, and inability to provide immediate mechanical stability. Allogeneic bone transplantation is not only expensive and limited in quantity, but also the virus transmission and immune rejection caused by allogeneic bone are the main reasons affecting its widespread clinical application. In recent years, in order to increase the bone transplantation rate, reduce the dependence on external fixation, and improve and maintain the curvature of the spine, intervertebral fusion cages have come into being. Intervertebral fusion cages have stronger stability than cylindrical autologous iliac bones, can effectively maintain the stability of the anterior spine, retain the height of the intervertebral space, meet the weight-bearing requirements of the spine, and allow patients to get out of bed and move early. Many clinical studies have reported that intervertebral fusion cages have a positive effect on improving bone fusion rate and short-term clinical efficacy.

[0003] However, incorrect or unstable positioning of existing intervertebral fusion devices may lead to surgical failure or increased incidence of postoperative complications. Incorrect or unstable positioning of intervertebral fusion devices may cause patients to experience persistent pain, limited motion function or other nerve and bone-related problems after surgery. At the same time, displacement or loose fixation of intervertebral fusion devices may lead to recurrence of postoperative symptoms or the need for additional surgical repair. The operation time is prolonged and the difficulty of the surgeon's operation is increased, which increases the risk and complexity of the operation. In view of this, we propose a self-stabilizing lumbar sacral intervertebral fusion device for anterior intervertebral fusion to solve the existing problems. Summary of the invention

[0004] The object of the present invention is to provide a self-stabilizing lumbar sacral intervertebral fusion cage for anterior intervertebral fusion to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a self-stabilizing lumbar sacral intervertebral fusion device for anterior intervertebral fusion, comprising an intervertebral fusion device body, a stabilizing component, a fusion hole, an installation groove, a lumbar vertebra, a gasket, a locking screw, a top block, a limit groove, a locking rod, a limit block, a fixing frame and a reset spring, wherein the intervertebral fusion device body is symmetrically provided with installation grooves, the installation grooves are V-shaped in the intervertebral fusion device body, and a fusion hole is opened through the middle of the intervertebral fusion device body.

[0006] Preferably, a stabilizing component is movably connected in the installation groove, and the stabilizing component is composed of a knob, a threaded rod and a locking groove. A threaded rod is movably connected in the installation groove, a knob is provided on one side of the threaded rod, and a locking groove is opened through the surface of the threaded rod.

[0007] Preferably, a locking rotation groove is opened between the installation grooves on one side of the intervertebral fusion device body, a locking screw is threadedly connected in the locking rotation groove, and a clamping groove is symmetrically arranged on one side of the intervertebral fusion device body close to the locking rotation groove, and a top block is arranged in the clamping groove on one side of the locking screw.

[0008] Preferably, the card slot is symmetrically provided with a limiting groove, a limiting block is slidably connected to the limiting groove, the limiting groove is movably connected to a locking rod through the limiting block, a fixing frame is arranged in the card slot, a return spring is arranged between the fixing frame and the locking rod on both sides, and the fixing frame and the locking rod are fixedly connected on both sides of the return spring.

[0009] Preferably, the locking rod and the locking groove are matched in size, and an oblique groove is provided on the surface of the locking rod close to the fixing frame, and the locking rod and the top block are matched with each other.

[0010] Preferably, gaskets are provided on both side surfaces of the intervertebral fusion device body, and both the intervertebral fusion device body and the gaskets are made of polyetheretherketone material, and the intervertebral fusion device body is movably connected to the lumbar vertebra via a stabilizing component.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The intervertebral fusion device body is connected to the lumbar spine through a stabilizing component. The design of the stabilizing component provides an adjustable mechanism. By adjusting the position of the threaded rod with a knob, the position and stability of the intervertebral fusion device body can be controlled, so that fine-tuning can be performed as needed during the operation to ensure the correct position and stability of the intervertebral fusion device, thereby improving the success rate of the operation and the patient's rehabilitation effect.

[0013] 2. By rotating the locking screw in the locking rotation groove, the locking screw can drive the top block to move vertically. The top block cooperates with the oblique groove of the locking rod. The locking rod ensures the fixation of the threaded rod after installation. The design of the limit system enables the intervertebral fusion device body to have the correct position limit during the intervertebral fusion process to prevent excessive movement or dislocation, thereby improving the success rate of the operation and the patient's rehabilitation effect.

[0014] 3. During disassembly, the return spring helps to restore the locking rod to its initial position when disassembly is required, so that the intervertebral fusion device body can be easily disassembled and reinstalled, thereby improving the convenience and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a working schematic diagram of the intervertebral fusion device body of the present invention;

[0017] Figure 3 It is a schematic diagram of the structure of the installation groove in the intervertebral fusion device body of the present invention;

[0018] Figure 4 It is a schematic diagram of the internal structure of the card slot in the present invention;

[0019] Figure 5 It is a schematic diagram of the structure of the stabilizing component in the present invention;

[0020] Figure 6 Schematic diagram of the structure of the fusion pore in the present invention.

[0021] In the figure: 1. intervertebral fusion device body; 2. stabilizing assembly; 21. knob; 22. threaded rod; 23. locking slot; 3. fusion hole; 4. mounting slot; 5. lumbar vertebra; 6. gasket; 7. locking screw; 8. top block; 9. limit slot; 10. locking rod; 11. limit block; 12. fixing frame; 13. reset spring; 14. locking rotation slot; 15. slot. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0023] like Figure 1-Figure 6 As shown, the self-stabilizing lumbar sacral intervertebral fusion device for anterior intervertebral fusion proposed by the present invention comprises an intervertebral fusion device body 1, a stabilizing component 2, a fusion hole 3, a mounting groove 4, a lumbar vertebra 5, a gasket 6, a locking screw 7, a top block 8, a limiting groove 9, a locking rod 10, a limiting block 11, a fixing frame 12 and a reset spring 13. The intervertebral fusion device body 1 is symmetrically provided with the mounting groove 4, which is in a V-shaped structure in the intervertebral fusion device body 1, and a fusion hole 3 is penetrated through the middle of the intervertebral fusion device body 1.

[0024] In an optional embodiment, a stabilizing component 2 is movably connected in the installation groove 4, and the stabilizing component 2 is composed of a knob 21, a threaded rod 22 and a locking groove 23. A threaded rod 22 is movably connected in the installation groove 4, a knob 21 is provided on one side of the threaded rod 22, and a locking groove 23 is opened through the surface of the threaded rod 22.

[0025] In an optional embodiment, a locking rotation groove 14 is opened between the mounting grooves 4 on one side of the intervertebral fusion device body 1, a locking screw 7 is threadedly connected to the locking rotation groove 14, and a clamping groove 15 is symmetrically arranged on one side of the intervertebral fusion device body 1 close to the locking rotation groove 14, and a top block 8 is arranged in the clamping groove 15 on one side of the locking screw 7.

[0026] In an optional embodiment, the card slot 15 is symmetrically provided with a limiting slot 9, a limiting block 11 is slidably connected to the limiting slot 9, the limiting slot 9 is movably connected to a locking rod 10 through the limiting block 11, a fixing frame 12 is provided in the card slot 15, a return spring 13 is provided between the two sides of the fixing frame 12 and the locking rod 10, and the two sides of the return spring 13 are respectively fixedly connected to the fixing frame 12 and the locking rod 10;

[0027] Specifically, the return spring 13 helps to restore the locking rod 10 to the initial position when disassembly is required, so that the intervertebral fusion cage body 1 can be easily disassembled and reinstalled.

[0028] In an optional embodiment, the locking rod 10 and the locking groove 23 are matched in size, and an inclined groove is provided on the surface of the locking rod 10 close to the fixing frame 12, and the locking rod 10 and the top block 8 are matched with each other;

[0029] Specifically, by rotating the locking screw 7 in the locking rotation groove 14, the locking screw 7 can drive the top block 8 to move vertically, and the top block 8 cooperates with the oblique groove of the locking rod 10. The locking rod 10 ensures the fixation of the threaded rod 22 after installation. The design of the limiting system enables the intervertebral fusion device body 1 to have a correct position limit during the intervertebral fusion process to prevent excessive movement or dislocation, thereby improving the success rate of the operation and the patient's rehabilitation effect.

[0030] In an optional embodiment, gaskets 6 are provided on both sides of the intervertebral fusion device body 1, and the intervertebral fusion device body 1 and the gaskets 6 are both made of polyetheretherketone material, and the intervertebral fusion device body 1 is movably connected to the lumbar vertebra 5 through the stabilizing component 2;

[0031] Specifically, the knob 21 of the stabilizing assembly 2 can adjust the threaded rod 22 to rotate in the mounting slot 4 , thereby adjusting the position and stability of the intervertebral fusion cage body 1 .

[0032] The working principle of the present invention is as follows: when using the device, first, the intervertebral fusion device body 1 is connected to the lumbar vertebra 5 through the stabilizing component 2, and the knob 21 of the stabilizing component 2 can adjust the threaded rod 22 to rotate in the installation groove 4, thereby adjusting the position and stability of the intervertebral fusion device body 1. At the same time, by rotating the locking screw 7 in the locking rotation groove 14, the locking screw 7 can drive the top block 8 to move vertically, and the top block 8 cooperates with the oblique groove of the locking rod 10. The locking rod 10 ensures the fixation of the threaded rod 22 after installation. The design of the limiting system enables the intervertebral fusion device body 1 to have a correct position limit during the intervertebral fusion process to prevent excessive movement or dislocation, thereby improving the success rate of the operation and the patient's rehabilitation effect, and the reset spring 13 helps to restore the locking rod 10 to the initial position when disassembly is required, so that the intervertebral fusion device body 1 can be easily disassembled and reinstalled.

[0033] It should be understood that the above specific embodiments of the present invention are used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

Claims

1. A self-stabilizing lumbar intervertebral fusion cage for anterior intervertebral fusion, characterized in that: The intervertebral fusion device comprises an intervertebral fusion device body (1), a stabilizing component (2), a fusion hole (3), a mounting groove (4), a gasket (6), a locking screw (7), a top block (8), a limiting groove (9), a locking rod (10), a limiting block (11), a fixing frame (12) and a reset spring (13), wherein the intervertebral fusion device body (1) is symmetrically provided with the mounting grooves (4), the mounting grooves (4) are in a V-shaped structure in the intervertebral fusion device body (1), and a fusion hole (3) is provided through the middle of the intervertebral fusion device body (1); The mounting groove (4) is movably connected to a stabilizing component (2), the stabilizing component (2) being composed of a knob (21), a threaded rod (22) and a locking groove (23); the mounting groove (4) is movably connected to a threaded rod (22), a knob (21) is provided on one side of the threaded rod (22), and a locking groove (23) is provided through the surface of the threaded rod (22); A locking rotation groove (14) is provided between the mounting grooves (4) on one side of the intervertebral fusion device body (1), a locking screw (7) is connected to the inner thread of the locking rotation groove (14), and a clamping groove (15) is symmetrically provided on one side of the intervertebral fusion device body (1) close to the locking rotation groove (14), and a top block (8) is provided in the clamping groove (15) on one side of the locking screw (7); The clamping slot (15) has symmetrically arranged limit slots (9), the limit slots (9) are slidably connected to limit blocks (11), the limit slots (9) are movably connected to a locking rod (10) via the limit blocks (11), a fixing frame (12) is arranged in the clamping slot (15), a return spring (13) is arranged between the two sides of the fixing frame (12) and the locking rod (10), and the two sides of the return spring (13) are respectively fixedly connected to the fixing frame (12) and the locking rod (10); The locking rod (10) and the locking groove (23) are matched in size, and a slanted groove is provided on the surface of the locking rod (10) close to the fixing frame (12), and the locking rod (10) and the top block (8) are matched with each other; Gaskets (6) are provided on both side surfaces of the intervertebral fusion device body (1), and both the intervertebral fusion device body (1) and the gaskets (6) are made of polyetheretherketone material. The intervertebral fusion device body (1) is movably connected to the lumbar vertebra (5) via a stabilizing component (2).

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