US 12,251,305 B2
Stable IOL base design to support second optic
James M. Scott, Weatherford, TX (US); and Raza Shah, Arlington, TX (US)
Assigned to Alcon Inc., Fribourg (CH)
Filed by Alcon Inc., Fribourg (CH)
Filed on Aug. 24, 2023, as Appl. No. 18/455,371.
Application 18/455,371 is a continuation of application No. 17/231,438, filed on Apr. 15, 2021, granted, now 11,786,362.
Claims priority of provisional application 63/010,745, filed on Apr. 16, 2020.
Prior Publication US 2023/0397984 A1, Dec. 14, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/16 (2006.01)
CPC A61F 2/1648 (2013.01) [A61F 2/1618 (2013.01); A61F 2/164 (2015.04); A61F 2/1645 (2015.04); A61F 2002/1681 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A multi-part intraocular lens (IOL), comprising:
a first optic comprising an anterior surface and a posterior surface;
a ring-shaped base comprising:
a continuous posterior rim supporting the first optic therebetween;
a discontinuous anterior rim comprising an anterior surface defining at least two diametrically-opposite recesses;
at least two pedestals protruding from inside the anterior rim towards a center of the base and equidistantly-positioned between the at least two diametrically-opposite recesses; and
a concave circumferential outer sidewall extending from the anterior rim to the posterior rim; and
a second optic supported by the base, the second optic comprising an anterior surface, a posterior surface and at least two radial extensions extending peripherally from an optical zone of the second optic for positioning in the at least two diametrically-opposite recesses of the anterior rim,
wherein the continuous posterior rim is sized and shaped to prevent migration of lens epithelial cells (LECs) when the IOL is implanted.