Piston type titanium wire mesh cage and manufacturing method thereof

Abstract

The invention discloses a piston type titanium wire mesh cage and a manufacturing method thereof, applied to titanium cage fusion. Through holes in the side wall of a common titanium cage are larger, and the particle sizes of particulate fragmented bones arranged in the through holes are larger, which are not beneficial to the close contact of an implanted particulate bone and a bone tissue of a human centrum. In addition, two ends of the titanium cage are not provided with any block, thus the particulate bone placed in the titanium cage is easy to fall off from two ends of the cavity of the titanium cage to increase the risk for the application of the titanium cage in clinic. Round or parallelogram first through holes are uniformly distributed in the side wall of a titanium cage body of the piston type titanium wire mesh cage; second through holes with the pore diameters of 0.5-1.0mm are distributed on a cap of a piston type cap-shaped body; titanium wire non-woven fabrics or titanium wire woven fabrics are wound and sintered on the outer wall of the titanium cage body to form a titanium wire mesh cage body; a hydroxylapatite layer is respectively coated on the inner surface and the outer surface of the titanium wire mesh cage body; and two piston type cap-shaped bodies are arranged in the inner cavity of the titanium wire mesh cage body. The manufacturing method of the piston type titanium wire mesh cage is carried out under the conditions that the sintering temperature is 1200-1400 DEG C, the sintering time is 1-2h and the vacuum degree is 1*10<-3>Pa.

Description

technical field [0001] The invention relates to a titanium wire mesh cage and a manufacturing method thereof, belonging to the technical field of medical instruments. Background technique [0002] The use of artificial equipment to fuse the human vertebral body is to repair the damage to the stability of the spine caused by disease, trauma or surgery, and to reconstruct the mechanical structure of the spine with functions close to normal. At present, artificial vertebral body fusion, especially fusion using a titanium metal mesh cage (titanium cage for short), is considered to be an effective treatment method. The vertebral body is a load-bearing joint with complex stress. Under the load-bearing condition, it simultaneously bears the comprehensive effects of tension, compression, torsion and interface shear force, as well as repeated fatigue and wear. Therefore, it is required that the implanted cage must have sufficient strength, wear resistance and corrosion resistance. ...

AI Technical Summary

Problems solved by technology

Due to the large hole diameter of the side wall of the titanium cage, in order to prevent the granular bone from falling off from the through hole of the side wall, the particle size of the currently implanted granular bone is relatively large, which is not conducive to the close contact between the granular bone and the vertebral bone tissue, which not only affects blood The circulation is established earlier, and the crawling replacement time is increased, and the healing effect of the bone graft is also reduced; due to the large hole diameter of the side wall of the titanium cage, the fine particle bone and titanium wire engineering with better bone grafting effect cannot be applied bone; in addition, because there is no barrier at both ends of the commonly used titanium cage, the placed granular bone is easy to fall out from the two ends of the titanium cage cavity, which increases the risk of clinical application of the titanium cage

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