Opthalmological collagen coverings

Details Opthalmological collagen coverings Opthalmological collagen coverings

1990-11-09

1992-03-10

Page, Thurman K.

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Implant or insert

424428, 424429, 128DIG8, 530356, 623 4, 514912, 514955, A61F 214

Patent

active

050948555

ABSTRACT:
Ophthalmologic collagen coverings derived from animal eyes and a process 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: 3553299 (1971-01-01), Thiele et al.
patent: 3637642 (1972-01-01), Fujii
patent: 4164559 (1979-08-01), Miyata et al.
Stryer, Biochemistry, 2nd Ed. W. H. Freeman & Co. 1981, pp. 18-19.

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