04904260 is referenced by 611 patents and cites 8 patents.

By implanting two prosthetic disc capsules side-by-side into a damaged disc of a human spine, both height and motion, including front-to-back bending, can be maintained. Each prosthetic disc capsule has a bladder enclosing a fluid containing a therapeutic material that is slowly diffusible through a semi-permeable membrane of the bladder. The fluid filling the semi-permeable membrane preferably is an aqueous solution that has gel-like properties that afford a viscosity and velocity-shear behavior imitating the natural rheology of intradiscal nuclear tissue. Those properties are obtained when the aqueous solution is of a mucopolysaccharide such as hyaluronic acid or soldium hyaluronate.

Title
Prosthetic disc containing therapeutic material
Application Number
87424
Publication Number
4904260
Application Date
July 25, 1988
Publication Date
February 27, 1990
Inventor
Terry P Corbin
Golden Valley
MN, US
Charles D Ray
Wayzata
MN, US
Agent
Moore & Hansen
Assignee
Cedar Surgical
MN, US
IPC
A61M 31/00
A61F 2/44
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