Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Eye prosthesis – Intraocular lens
Patent
1987-08-27
1988-12-13
Frinks, Ronald L.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Eye prosthesis
Intraocular lens
A61F 216
Patent
active
047908459
ABSTRACT:
A posterior chamber lens including a plano-convex polymethylmethacrylate (PMMA) optic and two smooth, monofilament, curved, flexible loops attached to and extending from the optic. Each of the loops, also of PMMA, is angulated 10.degree. anteriorly from the plano surface of the optic. The optic is reversed such that the convex surface is posterior and is provided with positioning holes. The PMMA decreasing radius loops and optic provide for a flexible, lightweight and edge-thin lens and loops. The PMMA loops' angulation and plano-convex optic design vault the lens away from the iris. The positioning holes are situated at 12 and 6 o'clock positions and are of a predetermined desired size. A second embodiment of the PMMA lens includes PMMA loops which are substantially parallel to the planar surface of the lens. A third embodiment of the PMMA lens includes PMMA loops which are 10.degree. anteriorly from the convex surface of the optic. A fourth embodiment of the PMMA lens includes closed PMMA loops can be angulated from the surface of the lens. A small loop can be provided at the end of each open loop of decreasing radius. The loop can reverse or fold back and secure to the optic. A geometrical member can be positioned at an end of each loop. One loop can be open and another loop can be closed. The loop can be dialed into position by the junction between one of the loops and the optic.
REFERENCES:
patent: 4251887 (1981-02-01), Anis
patent: 4435855 (1984-03-01), Pannu
patent: 4473910 (1984-10-01), Grinder
patent: 4601720 (1986-07-01), Sinskey
The Simcoe Posterior Chamber Lens, Advertisement Brochure by Cilco, Feb. 1980, 4 pages.
New from Cilco . . . The Single-Piece Perspex Posterior Chamber Lens, Advertisement Brochure, Cilco, Inc. Mar. 1981, 2 pages.
Grendahl Dennis T.
Lippman Myron E.
Frinks Ronald L.
Jaeger Hugh D.
Surgidey Corporation
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