Collagen replacement prothesis for the cornea
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United States of America Patent
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Apr 8, 1986
Issued Date -
N/A
app pub date -
Dec 18, 1984
filing date -
Sep 30, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to a prosthetic replacement for the cornea and particularly to a transparent collagen material useful for making such a prosthesis and to methods for making such transparent collagen material. The prosthesis is preferably composed of a native, non-fibrilized, transparent collagen material formed from a soluble collagen solution by ultracentrifuging to form a pellet and fixing the same pellet, whereby the collagen material has less than 5% absorbance of light at 900 nm for a 5 mm thick sample and comprises polyhydroxyethylmethacrylate or vitrosin, in a range of from 0.01 to 50.0 percent by weight, based on the collagen protein.
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