Method of producing artificial prosthesis of disci intervertebrales nucleus pulposus

Abstract

The invention discloses a preparing method of artificial intervertebral disc nucleus pulposus prosthesis in the macromolecular technical domain, which comprises the following steps: preparing polyurethane bag material; blending the polymer dihydroxy alcohol and diisocyanate; stirring the composition protected by nitrogen to make the prepolymer; heating to add chain-expanding cross linker; stirring to react; maturing; moulding the polyurethane bag; preparing the silicon rubber filler through blending base gel, cross linker, filler and catalyst to stir evenly; injecting the silicon rubber filler into the polyurethane bag through injector. The invention doesn't harm human body with good biological compatibility and dynamic property, which has chemical inert to possess long-term mechanic strength.

Description

technical field

[0001] The invention relates to a preparation method of an artificial intervertebral disc nucleus pulposus, and belongs to the technical field of polymer materials. Background technique

[0002] Lumbar degenerative disease is a common disease in spinal surgery. Patients not only have to endure pain, but in severe cases, they may even lose their ability to work and take care of themselves. The current common method of treatment for this disease is lumbar fusion. However, after lumbar fusion, the motion function of the corresponding segment will be lost, resulting in accelerated degeneration of the intervertebral disc in the adjacent upper and lower segments, resulting in discogenic low back pain and even spondylolisthesis, spinal stenosis and other changes. In recent years, a new method for the treatment of lumbar degenerative diseases has come out, that is, lumbar artificial nucleus pulposus replacement. The biggest advantage of this operation is that it c...