05047055 is referenced by 720 patents and cites 10 patents.

A prosthetic nucleus for a vertebral disc is made of a hydrogel material. The hydrogel prosthetic nucleus has a shape generally conforming to the natural nucleus pulposus. The hydrogel has a water content of at least 30% and has a compressive strength of 4MNm.sup.-2 or greater. When the hydrogel material is dehydrated, it has a dimension of less than half of that of the hydrated hydrogel nucleus. The prosthetic nucleus may be formed of two or more pieces of hydrogel material which pieces, when combined, have a shape generally conforming to the natural nucleus.

Title
Hydrogel intervertebral disc nucleus
Application Number
7/633711
Publication Number
5047055
Application Date
December 21, 1990
Publication Date
September 10, 1991
Inventor
Paul A Higham
Ringwood
NJ, US
Qi Bin Bao
Livingston
NJ, US
Agent
Raymond W Augustin
Lawrence C Akers
Peter C Richardson
Assignee
Pfizer Hospital Products Group
NY, US
IPC
A61F 2/44
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