The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 08, 1986
Filed:
Dec. 18, 1984
Romaine R Bruns, Norwood, MA (US);
Jerome Gross, Waban, MA (US);
Massachusetts General Hospital, Boston, MA (US);
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.