Ucleus pulposus prosthesis device implanted into intervertebral disc fibrous ring, a manufacturing method and filling device of nucleus pulposus prosthesis device

Abstract

The invention relates to the field of nucleus pulposus prostheses of intervertebral disc fibrous rings, in particular to a nucleus pulposus prosthesis device implanted into an intervertebral disc fibrous ring and a manufacturing method and a filling device of the nucleus pulposus prosthesis device. The nucleus pulposus prosthesis device implanted into the intervertebral disc fibrous ring comprisesa balloon shell, a filler and at least one sensor, wherein the balloon shell can be implanted into the intervertebral disc fibrous ring and is internally provided with a filling cavity; the filler isarranged in the filling cavity so as to expand the balloon shell; and the at least one sensor is arranged on the balloon shell or in the filler. The balloon shell is placed in the fibrous ring of theintervertebral disc, the balloon shell abuts against the inner wall of the fibrous ring after being expanded to form a similar nucleus pulposus structure, nucleus pulposus replacement is achieved, and the sensor is embedded to obtain biological parameters and / or mechanical parameters of the nucleus pulposus prosthesis device in the fibrous ring for comprehensive monitoring, and the balloon shellis specifically and uniquely improved.

Description

technical field [0001] The invention relates to the field of nucleus pulposus prosthesis of intervertebral disc annulus fibrosus, in particular to a nucleus pulposus prosthesis device implanted in intervertebral disc annulus fibrosus, a manufacturing method thereof and a filling device. Background technique [0002] Intervertebral disc (intervertebral disc) The cartilage connection between the vertebral bodies of two adjacent vertebrae is called the intervertebral disc, which is composed of the peripheral fibrous ring and the central nucleus pulposus. The annulus fibrosus is composed of multiple layers of staggered fibrocartilage rings, which firmly connect the vertebral bodies together, have greater elasticity and toughness, and can not only withstand pressure, but also prevent the nucleus pulposus from overflowing. The nucleus pulposus is a white jelly-like substance, which is elastic. When the nucleus pulposus is affected by gravity, it expands around and squeezes the an...

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned filling system has the following defects: 1. It is difficult to obtain the corresponding mechanical properties, and only a single filling can be performed, and because the fine structure of each fibrous annulus is different, it is difficult to fully replicate, especially some cooperation that does not conform to kinematics , are a huge test for the nucleus pulposus prosthesis; 2. Secondly, the nucleus pulposus prosthesis needs to be implanted deep in the human body, and it is difficult to monitor it comprehensively, especially to obtain the biological information inside the annulus fibrosus, which can only be performed based on the experience of doctors and post-maintenance

Images