Artificial intervertebral disc

CN115887074BActive Publication Date: 2026-07-07DECANS MEDICAL DEVICES CO LTD
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Patent Information

Application Number
CN202211665358.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-23
Publication Date
2026-07-07
Estimated Expiration
2042-12-23

AI Technical Summary

Technical Problem

Existing artificial intervertebral discs cannot effectively simulate the cushioning function of human intervertebral discs, and are prone to surgical complexity and positional displacement during implantation, resulting in insufficient stability and durability.

Method used

The device employs a metallic elastomer and a balloon structure. The metallic elastomer consists of multiple layers of ring-shaped n-units, simulating the buffering function of the annulus fibrosus and nucleus pulposus. Combined with the fixing teeth and locking pin structure of the upper and lower endplates, it ensures a stable connection. The balloon is made of flexible material and filled with materials such as saline solution to provide elastic cushioning.

Benefits of technology

It improves the durability and stability of artificial intervertebral discs, simulates the cushioning function of human intervertebral discs, simplifies surgical procedures, and reduces the risk of surgical failure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present disclosure relates to an artificial intervertebral disc, comprising an upper endplate configured to be connected with an upper vertebral body, a lower endplate configured to be connected with a lower vertebral body, and an elastic body arranged between the upper endplate and the lower endplate, wherein the elastic body comprises a multi-layer structure arranged in a top-down manner, each layer has a ring-shaped cross section, the ring-shaped cross section of each layer is composed of a plurality of n-shaped units, two adjacent edges of two adjacent n-shaped units are connected at an inner ring end of the ring-shaped cross section, and a longitudinal cross section of each layer also has an n-shaped structure, wherein the n-shaped structures of two adjacent upper and lower layers are arranged in a top-down alignment manner, and openings thereof face the inner ring and are connected with each other at the inner ring position; and a balloon having elasticity and arranged between the upper endplate and the lower endplate in a top-down direction and arranged in the ring-shaped cross section of the elastic body in a horizontal direction. By arranging the elastic body and the structure of the balloon, the cushioning and shock-absorbing functions of the annulus fibrosus and the nucleus pulposus of the human intervertebral disc are simulated, the artificial intervertebral disc has similar performance to the original human tissue, and the artificial intervertebral disc is easy to operate.
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Citation Information

Patent Citations

  • Intervertebral cage having flexibility

    CN102462562A

  • Rapidly-disassembled sternum closure fixer

    CN110123428A

  • Artificial intervertebral disc prosthesis

    CN209285841U

  • Intervertebral disk prosthesis

    US20040254644A1