3D (three-dimensional) printing artificial cervical disc prosthesis

Abstract

The invention discloses a 3D (three-dimensional) printing artificial cervical disc prosthesis which comprises a prosthesis upper end plate, a prosthesis lower end plate and a prosthesis nucleus pulposus. The prosthesis nucleus pulposus is arranged between the prosthesis upper end plate and the prosthesis lower end plate, the prosthesis upper end plate, the prosthesis lower end plate and the prosthesis nucleus pulposus are connected in a mutually matched manner, a first microporous surface is arranged on the upper surface of the prosthesis upper end plate, first inverted teeth are distributed on the first microporous surface, a second microporous surface is arranged on the lower surface of the prosthesis lower end plate, and second inverted teeth are distributed on the second microporous surface. The prosthesis nucleus pulposus comprises an elliptical base. The prosthesis has the advantages that the prosthesis is designed by reverse technology, design is completely bionic design, three-dimensional anatomic forms of the prosthesis end plates are completely fitted with those of vertebral end plates, grinding of the upper end plate and the lower end plate is almost omitted when the prosthesis is implanted, and completeness of the vertebral end plates is retained. The prosthesis can be rapidly manufactured by 3D printing technology, an implanting process can be simplified in practical application, surgical time is shortened, and surgical safety is improved.

Description

technical field [0001] The invention relates to an orthopedic implant device, in particular to a 3D printed artificial cervical intervertebral disc prosthesis. Background technique [0002] Cervical spondylosis is a degenerative disease in which the degenerative changes of the cervical intervertebral disc and its secondary pathological changes involve the surrounding tissue structure and produce clinical symptoms. Epidemiological statistics show that the incidence of cervical spondylosis in my country is about 17.3%, and the incidence is increasing year by year, and the age of onset tends to be younger recently. Anterior cervical decompression and bone graft fusion is currently a classic operation for cervical spondylosis, but a large number of studies have found that it has many complications, such as adjacent segment degeneration and pseudarthrosis formation. At this time, intervertebral disc replacement is attracting more and more attention, and the short-term efficacy o...

AI Technical Summary

Problems solved by technology

First of all, in terms of materials, the population of cervical spondylosis is getting younger and younger, which requires prosthetic materials to have better anti-corrosion and anti-wear properties; secondly, compared with ACDF, the price of cervical disc replacement It is more expensive and the operation is more complicated. How to develop a prosthesis with simple operation and low cost is a problem to be solved at present; at the same time, reports of prosthesis-related complications are common, among which prosthesis sinking is the most common prosthesis-related Complications, how to avoid these complications is also one of the problems to be solved in prosthesis design; in addition, the specifications of commonly used prosthesis are designed according to European and American human anatomy standards, which makes it impossible for some patients to use the most suitable prosthesis

In fact, there is a high mismatch rate between the common cervical intervertebral disc prosthesis and the anatomical parameters of the Chinese cervical spine

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