US 6,224,628 B1 · Haptics for an intraocular lens

Abstract

Haptics for an intraocular lens are attached to a flexible, deformable optic which is capable of being rolled for insertion through a small incision in the cornea. The outer periphery of the optic is circular. The haptics include a pair of stems extending radially on diametrically opposite sides of the optic. The stems are rectangular in cross section, having greater width than thickness to permit greater flexibility anterior to posterior than superior to inferior. A flexible support bar is mounted at the end of each stem, each bar being bisected by its stem respectively, and being shaped like an arc concentric with the optic. The support bar has greater depth than width, in order to permit greater flexibility proximally and distally than anteriorly and posteriorly. The haptics have a haptic arm mounted in cantilever fashion at the ends of each support bar, each of the arms terminating in a circular or lobular footplate. The arms have greater width than thickness, and the footplates have a thickness of about fifty microns.

Claims21

Dependent claims

An intraocular lens for insertion into the human eye, comprising:

a) a lens optic, the optic being substantially disc shaped and having a center, an edge, and a posterior surface;
b) a first stem and a second stem extending radially from the edge of said optic on diametrically opposed sides of said optic, each of the stems having an end distal to said optic;
c) a first crossbar attached to the distal end of said first stem and a second crossbar attached to the distal end of said second stem, said crossbars having a depth and a width, wherein said death is greater than said width, and said crossbars being bisected by said stems, and each of said crossbars having opposing ends;
d) a pair of haptic arms attached to each of said crossbars, each haptic arm extending radially from the opposing ends of said first and second crossbars;
and
e) a plurality of circular footplates, each of said haptic arms terminating in one of the footplates at an end of said haptic arm opposite one of said crossbars;
f) wherein said intraocular lens is made from a flexible, resilient, deformable material whereby said lens regains its shape after being compressed, bent, folded or stretched.

4 more elements

Haptics for attachment to a disk-shaped optic of an intraocular lens for insertion into a human eye, comprising:

a) a first stem and a second stem extending radially from an edge of the optic on diametrically opposed sides of the optic, each of the stems having an end distal to the optic;
b) a first crossbar attached to the distal end of said first stem and a second crossbar attached to the distal end of said second stem, said crossbars having a depth and a width, wherein said depth is greater than said width, and said crossbars being bisected by said stems, and each of said crossbars having opposing ends;
c) a pair of haptic arms attached to each of said crossbars, each haptic arm extending radially from the opposing ends of said first and second crossbars;
and
d) a plurality of circular footplates, each of said haptic arms terminating in one of the footplates at an end of said haptic arm opposite one of said crossbars;
e) wherein said haptics are made from a flexible, resilient, deformable material whereby said haptics may be compressed for insertion into the eye and regain their shape after the compressive force is removed and whereby the opposing ends of said crossbars flex to reduce pressure on the eye.

3 more elements

Dependencies are inferred from the claim text.

Haptics for an intraocular lens

Life of this patent

Haptics for an intraocular lens

Life of this patent

Abstract

Claims21