Surgical heterogeneous-interface biological fusion fixator

Abstract

The present application relates to the field of medical device technology, and in particular, to a surgical heterogeneous-interface biological fusion fixator. The surgical heterogeneous-interface biological fusion fixator comprises a body (9). An external screw thread is arranged on the outer surface of the body (9). The body (9) is longitudinally divided into an artificial bone interface (2) and an alloy interface (3), and the artificial bone interface (2) and the alloy interface (3) are detachably connected. A connection end of the body (9) is provided with a detachable fixation tail cap (1), and the detachable fixation tail cap (1) is configured for stabilizing the connection between the artificial bone interface (2) and the alloy interface (3). The surgical heterogeneous-interface biological fusion fixator combines an alloy material with an artificial bone material to effectively promote the fusion of the fixator interface and the bone while achieving a strong fixation, thus further improving the long-term stability of the fixator.

Description

A surgical interface heterogeneous biofusion fixator Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an interface heterogeneous biofusion fixator for surgery. Background Art

[0002] Osteoporosis and osteoporotic fractures have become a major public health concern worldwide. my country has entered an aging society, and the incidence of osteoporosis increases with population aging. Osteoporosis patients are also at high risk for fractures, making fractures a leading cause of decreased quality of life and even death in the elderly. Orthopedic surgery often requires the assistance of internal fixation devices. Screws used for fracture fixation, pedicle fixation, and interarticular fixation are mostly made of titanium alloy. While these materials possess excellent mechanical properties and biocompatibility, they lack optimal osteogenic properties and long-term compatibility between screws and bone, making them difficult to meet the needs of osteoporosis patients. Long-term stress concentration can easily lead to screw loosening or even fracture, making long-term stability difficult to achieve.

[0003] Therefore, the present invention proposes a surgical interface heterogeneous biofusion fixator to solve the above technical problems.

[0004] Utility Model Content

[0005] The purpose of the utility model is to provide a surgical interface heterogeneous biofusion fixator. The screw can achieve strong fixation while effectively promoting biofusion between the screw interface and bone, organically combining the mechanical properties and the advantages of promoting bone formation, which can further improve its long-term stability and enhance the efficacy and safety of internal fixation surgery.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts a technical solution specifically as follows: a surgical interface heterogeneous biofusion fixator, comprising a main body, the outer surface of the main body is provided with an external thread, one end of the main body is an entry end, the entry end is a spike structure in the prior art, which is convenient for entering the human body, and the other end is a connecting end, the outer surface of the connecting end is provided with an external connecting thread; the main body is longitudinally divided into an artificial bone interface and an alloy interface, the artificial bone interface and the alloy interface are detachably connected, and the connecting end of the main body is provided with a detachable fixing tail cap, which is used to stabilize the connection between the artificial bone interface and the alloy interface.

[0007] Furthermore, a plurality of sliders and slide grooves are provided on the side close to the alloy interface and the artificial bone interface, and the alloy interface and the artificial bone interface are connected by sliding the sliders and slide grooves horizontally, which makes the connection more convenient and quick.

[0008] Furthermore, the fixed tail cap is an annular structure, and the inner wall of the fixed tail cap is provided with an internal connecting thread that matches the external connecting thread. The fixed tail cap is threadedly connected to the connecting end on the body, which can strengthen and stabilize the connection between the artificial bone interface and the alloy interface.

[0009] Furthermore, a hollow guide wire hole is provided longitudinally through the interior of the main body, and the hollow guide wire hole passes through the slider. The hollow guide wire hole is used to place the guide wire, and can be used percutaneously to facilitate the insertion of screws under the guidance of a robot, and can also be inserted percutaneously by hand.

[0010] Furthermore, a fixed tail screw hole is provided on the upper surface of the connecting end, and the fixed tail screw hole is used to drive the interface heterogeneous fusion screw to rotate.

[0011] Furthermore, the alloy interface is composed of titanium alloy and tantalum alloy, and the artificial bone interface is composed of hydroxyapatite and tricalcium phosphate. Such a setting enables the interface heterogeneous fusion screw to achieve strong fixation while effectively promoting biological fusion of the screw interface with the bone, organically combining mechanical properties and the advantages of promoting bone formation.

[0012] Furthermore, the fixed tail cap is made of metal material, which can strengthen the connection between the artificial bone interface and the alloy interface.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This interface heterogeneous fusion screw combines alloy materials (titanium alloy, tantalum alloy, etc.) with artificial bone materials (hydroxyapatite, tricalcium phosphate, etc.), which can effectively promote the biological fusion of the screw interface and bone while achieving strong fixation, organically combining mechanical properties and the advantages of promoting bone formation. The present invention can replace existing alloy fracture screws and pedicle screws, reduce the occurrence of screw loosening or breakage, further improve its long-term stability, and enhance the efficacy and safety of internal fixation surgery.

[0015] This interface heterogeneous fusion screw is ingeniously conceived and rationally designed. The setting of the slider and the slide groove makes the connection between the artificial bone interface and the alloy interface convenient and rapid, and the setting of the fixed tail cap further strengthens and stabilizes the connection between the artificial bone interface and the alloy interface, so that the screw has the advantages of strong fixation and good bone biological fusion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0017] FIG1 is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0018] FIG2 is a first schematic diagram of the exploded structure of an embodiment of the present invention.

[0019] FIG3 is a second schematic diagram of the exploded structure of an embodiment of the present invention.

[0020] FIG4 is a third schematic diagram of the exploded structure of an embodiment of the present invention.

[0021] FIG5 is a schematic structural diagram of the screw thread for fixing the tail portion in the present invention.

[0022] Among them, the figures are marked as: 1. fixed tail cap; 2. artificial bone interface; 3. alloy interface; 4. fixed tail screw; 5. connecting end; 6. slider; 7. slide groove; 8. center guide wire hole; 9. main body. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Embodiment: As shown in Figures 1-4, this embodiment provides a surgical interface heterogeneous biofusion fixator, including a body 9, the outer surface of which is provided with external threads. One end of the body 9 is an entry end, which is a pointed structure in the prior art to facilitate entry into the human body, and the other end is a connecting end 5, the outer surface of which is provided with external connecting threads;

[0025] The main body 9 is longitudinally divided into an artificial bone interface 2 and an alloy interface 3, and the artificial bone interface 2 and the alloy interface 3 are detachably connected. The connecting end 5 of the main body 9 is provided with a detachable fixed tail cap 1. Specifically, a slide groove 7 and a slider 6 are respectively provided on the upper and lower inner walls of the alloy interface 3, and a slider 6 and a slide groove 7 are respectively provided on the upper and lower inner walls of the artificial bone interface 2. The alloy interface 3 and the artificial bone interface 2 are laterally slid into the slide groove 7 through the slider 6, which makes the connection more convenient and quick, and finally the interface heterogeneous screw is stably fixed into a complete screw; the fixed tail cap 1 is used to stabilize the connection between the artificial bone interface 2 and the alloy interface 3. Specifically, the fixed tail cap 1 is an annular structure, and the inner wall of the fixed tail cap 1 is provided with an internal connecting thread that matches the external connecting thread. The fixed tail cap 1 is threadedly connected to the connecting end 5 on the main body 9, which can strengthen and stabilize the connection between the artificial bone interface 2 and the alloy interface 3.

[0026] A hollow guide wire hole is provided longitudinally through the interior of the main body 9, and the hollow guide wire hole passes through the slider 6. The hollow guide wire hole is used to place a guide wire, which can be used percutaneously to facilitate the insertion of screws under the guidance of a robot, and can also be inserted percutaneously by hand.

[0027] A fixed tail screw 4 is provided on the upper surface of the connecting end 5 , and the fixed tail screw 4 is used to drive the interface heterogeneous fusion screw to rotate.

[0028] The alloy interface 3 is made of titanium alloy and tantalum alloy, and the artificial bone interface 2 is made of hydroxyapatite and tricalcium phosphate. This setting enables the interface heterogeneous fusion screw to achieve strong fixation while effectively promoting biological fusion of the screw interface with the bone, organically combining mechanical properties and the advantages of promoting osteogenesis. The fixed tail cap 1 is made of metal material, which can strengthen the connection between the artificial bone interface 2 and the alloy interface 3.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A surgical interface heterogeneous biofusion fixator, comprising a body (9), characterized in that: The outer surface of the body (9) is provided with an external thread, one end of the body (9) is an entry end, and the other end is a connection end (5), and the outer surface of the connection end (5) is provided with an external connection thread; The body (9) is longitudinally divided into an artificial bone interface (2) and an alloy interface (3); the artificial bone interface (2) and the alloy interface (3) are detachably connected; the connection end (5) is provided with a detachable fixed tail cap (1); the fixed tail cap (1) is used to stabilize the connection between the artificial bone interface (2) and the alloy interface (3).

2. The surgical interface heterogeneous biofusion fixator according to claim 1, characterized in that: A plurality of sliders (6) and slide grooves (7) are provided on the side close to the alloy interface (3) and the artificial bone interface (2); the alloy interface (3) and the artificial bone interface (2) are laterally slid into and combined with each other through the sliders (6) and slide grooves (7).

3. The surgical interface heterogeneous biofusion fixator according to claim 1, characterized in that: The fixed tail cap (1) is an annular structure, and the inner wall of the fixed tail cap (1) is provided with an internal connection thread that matches the external connection thread.

4. The surgical interface heterogeneous biofusion fixator according to claim 2, characterized in that: A hollow wire guide hole (8) is longitudinally provided inside the body (9), and the hollow wire guide hole (8) passes through the slider (6).

5. The surgical interface heterogeneous biofusion fixator according to claim 1, characterized in that: The upper surface of the connecting end (5) is provided with a fixing tail screw thread (4).

6. The surgical interface heterogeneous biofusion fixator according to claim 1, characterized in that: The alloy interface (3) is made of titanium alloy and tantalum alloy, and the artificial bone interface (2) is made of hydroxyapatite and tricalcium phosphate.

7. The surgical interface heterogeneous biofusion fixator according to claim 1, characterized in that: The fixed tail cap (1) is made of metal material.

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