Method of producing a keratoprosthesis
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United States of America Patent
Stats
-
Oct 17, 1995
Issued Date -
N/A
app pub date -
Dec 20, 1993
filing date -
Aug 5, 1992
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A composite device which may be implanted in the cornea of the human eye to replace damaged or diseased portions, and a method of manufacturing the said device, are disclosed. The device consists of a transparent central portion intimately attached to an opaque spongy rim. Both portions are made of hydrogel materials produced in different conditions of polymerization during a two-stage process performed in a specific moulding unit. The spongy rim promotes and maintains cellular invasion from the host corneal tissue, thus providing a tight union between implant and recipient cornea which prevents the postoperative extrusion of the implant.
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