Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Eye prosthesis – Corneal implant
Patent
1984-04-06
1986-05-06
Bell, Mark L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Eye prosthesis
Corneal implant
A61F 214
Patent
active
045869294
ABSTRACT:
A device which may be implanted in the cornea of the eye to replace both the cornea and the lens, and which is biocompatible with the tissue in the eye. A concave base plate with a support cylinder connected integrally through its center is used and implanted in the eye using a microkeratome technique. An optical cylinder with threads formed about its periphery is screwed into the support cylinder to focus the light in the eye. The base plate and support cylinder are made of a hydrogel material having a water content ranging from 30 percent to 79 percent which is biocompatible with the tissue in the eye.
REFERENCES:
patent: 3458870 (1969-08-01), Stove, Jr.
patent: 3679504 (1972-07-01), Wichterle
patent: 4470159 (1984-09-01), Peyman
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