Ophthalmological collagen coverings

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Implant or insert

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Details

B32B 526, A61L 1504, C08L 8906

Patent

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049139045

ABSTRACT:
Ophthalmologic collagen coverings derived from animal eyes and a process for preparing such coverings comprising treatment of a fibrous tunic of an animal eye with an alkali metal hydroxide in a saturated solution of a salt of an alkali metal, followed by neutralization, dissolution in an aqueous solution of an organic acid, purification of the resulting solution of collagen by dialysis against a buffer solution while bringing the solution of collagen to a pH of 4.5 to 7.5 and drying the thus-obtained solution of collagen simultaneously with shaping spherical coverings therefrom.

REFERENCES:
patent: 4233360 (1980-11-01), Luck et al.

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