Method of producing intraocular lens formed from polymide powder

Details Method of producing intraocular lens formed from polymide powder Method of producing intraocular lens formed from polymide powder

1993-10-05

1995-03-14

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264 17, 264 27, 264162, 264235, 264319, 264325, B29D 1100

Patent

active

053975111

ABSTRACT:
A method of producing an intraocular lens having integrally formed optic and haptic including the steps of: (a) preparing a polyimide powder having a repeated unit represented by the following formula: ##STR1## [in the formula, when R.sub.1 =--C(CF.sub.3).sub.2 --, R.sub.2 is selected from ##STR2## the polyimide powder having a particle size of less than 1 mm; (b) placing the polyimide powder between a pair of dies having a pattern corresponding to a part of the contour of the lens; (c) hot pressing the polyimide powder between the dies, to provide a molding having the above part of the contour of the lens; and (d) machining the molding to form the rest of the contour of the lens to thereby provide the overall shape of the intraocular lens.

REFERENCES:
patent: 4876330 (1989-10-01), Higashi et al.
patent: 5141677 (1992-08-01), Fogarty

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