Artificial cervical intervertebral disc prosthesis

Abstract

The invention discloses an artificial cervical intervertebral disc prosthesis comprising a ring body. The top of the ring body is connected with a top plate and the bottom of the ring body is connected with a bottom plate. The middle of the side wall of the ring body is sunken inwards. A plurality of annular through holes are formed in the ring body; each annular through hole is formed in the circumferential direction of the ring body; a plurality of vent holes are formed between the annular through holes and an inner cavity of the ring body; and the annular through holes are communicated withthe inner cavity of the ring body through the vent holes. According to the invention, the annular through holes are communicated with the inner cavity of the ring body through the vent holes formed in the ring body, so that the phenomenon that the deformation of the annular through holes is inhibited by the air pressure of air in the annular through holes because a closed cavity is formed in theannular through hole with a small size is avoided and thus the elastic deformation capacity of the ring body is further improved; and the particles generated by abrasion of the annular through holes of the ring body in the deformation process can be timely and rapidly discharged out of the annular through holes, so that a problem that abrasion of the particles with the hole walls of the annular through holes in the annular through holes with frequent deformation is caused continuous to cause the abrasion aggravation is solved.

Description

technical field [0001] The invention belongs to the technical field of artificial cervical intervertebral discs, in particular to an artificial cervical intervertebral disc prosthesis. Background technique [0002] The spine plays an important role in load transmission, movement and protection of the spinal nerve roots and front organs in the human body. It is divided into cervical, thoracic, lumbar and sacrum, among which the cervical spine has a complex structure and much greater mobility than the thoracic and lumbar spine. , plays an extremely important role in people's daily life. As a complex mechanical system, it includes vertebral bodies, intervertebral discs and facet joints, ligaments and muscle tissues. The intervertebral disc is the main connecting structure between the vertebral bodies. The upper and lower cartilage endplates and the fibrous ring seal the nucleus pulposus together to form a whole, which is extremely elastic and plays a role in buffering external...

AI Technical Summary

Problems solved by technology

However, there are generally two types of cervical intervertebral disc prosthesis at present, one is the upper and lower split type, and the upper and lower parts can be rotatably connected; however, this kind of cervical intervertebral disc prosthesis will be worn during use, and the worn particles will cause occurrence of inflammation

The other is a U-shaped prosthesis, but the deformation direction of the prosthesis of this structure is limited, and the patient's front-to-back swing is relatively easy, while the lateral swing is relatively large and difficult, which causes inconvenience to the patient's use.

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