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:
Mar. 19, 1985
Filed:
Sep. 30, 1982
Romaine R Bruns, Norwood, MA (US);
Jerome Gross, Waban, MA (US);
Massachusetts General Hospital, Boston, MA (US);
Abstract
A transparent native, non-fibrilized collagen material is described having an absorbence at a wavelength of 900 nm of less than 5% in a sample 5 mm thick. This collagen material is useful for a prosthetic replacement of the cornea because of the high transparency and because it is a native material, and thus less susceptible to immunogenic responses. A method for forming the native, non-fibrilized, highly transparent collagen material comprises ultracentrifuging a purified solution of native collagen to form a pellet of transparent collagen material, and fixing the pellet of collagen material to form a rigid, leather-like material. The collagen material can also be used for prosthetic replacement of other bodily tissues, such as nucleus pulposus, cartilage, and vitreous body.