Artificial cervical disc plate-bone gap filling device and artificial intervertebral disc prosthesis

Abstract

The invention relates to an artificial cervical disc plate-bone gap filling device and an artificial intervertebral disc prosthesis. The artificial cervical disc plate-bone gap filling device comprises an air bag and an end plate, wherein the air bag is arranged under the end plate, the end plate is divided into multiple independent plate pieces attached to the outer surface of the air bag, and aninjection port is formed in the air bag and communicates with the inside of the air bag; toothed bulges are arranged on the upper surfaces of the plate pieces, hydroxyapatite coatings are arranged onupper surfaces of the plate pieces, the plate pieces are made of metal, and the air bag is made of a high polymer material. The artificial cervical disc plate-bone gap filling device fills plate-bonegaps, can meet various end plate dome radians only by one prosthesis and has a wide application range and high practicability; and the device reduces polishing of the bony end plate during operation,so that the occurrence rate of fracture during operation is decreased, the bleeding amount during operation is reduced, and the occurrence rate of heterotopic ossification after operation is reducedindirectly.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an artificial cervical intervertebral disc bone gap filling device and an artificial intervertebral disc prosthesis. Background technique [0002] Cervical disc degeneration disease (CDDD) is a common disease with a high incidence rate, and the previous treatment method is mainly anterior cervical discectomy and fusion (ACDF). However, ACDF will cause accelerated degeneration of adjacent segments due to increased compensatory activity of adjacent segments, which is the so-called adjacent segment disease (ASD). As a result, artificial cervical disc replacement (cervical disc replacement, CDR) came into being. While solving the patient's neurological symptoms, CDR can also preserve the physiological activity of the original segment. [0003] There are various designs of artificial cervical intervertebral discs, but their main structures are basically the same, including: ...

AI Technical Summary

Problems solved by technology

In order to make the plate-bone interface of each patient fit perfectly, the most suitable prosthesis type should be selected according to the bony endplate of different patients, but this is difficult to do in a single-center medical work; and The current type of prosthesis cannot meet the bony endplate condition of all patients

[0007] As mentioned above, all the metal endplates of artificial intervertebral discs currently on the market are fixed, which cannot meet the conditions of all patients with bony endplates

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