US4936849A
Expired / Lapsed
US
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Intraocular lens
Assignee: Nestle SA
•
Filing: 1988-03-15
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Granted: 1990-06-26
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Expires: 2008-03-15
Abstract
Abstract Disclosed is an intraocular lens comprising a lens element and a plurality of haptics extending therefrom, at least one of the haptics having an anchoring filament with an enlarged complete or partial mushroom-shaped end fixedly disposed inside a passage in the lens element. Also disclosed is a method for fixing a haptic having an anchoring filament to a lens element in a soft intraocular lens comprising the steps of (a) forming in the lens element a passage having a width that is less than the greatest width of the anchoring filament, (b) lubricating the anchoring filament of the haptic, the passage in the lens element, or both, (c) inserting the anchoring filament end-first into the passage, and (d) washing the intraocular lens to remove the lubricant.
Inventors
- 👤 Randall L. Knoll
- 👤 James E. Aysta
- 👤 Wilhelm Lewon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:47
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613; A61F2002/1681; A61F2002/1683; A61F2002/1686; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49945
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
53 words
An intraocular lens comprising a lens element and a plurality of haptics extending therefrom, at least one haptic comprising a support element attached to an anchoring filament having at least one enlarged complete or partial mushroom-shaped end having a shoulder region fixedly disposed against relative movement inside a passage in the lens element.
Claim 2
Dependent Claim
53 words
An intraocular lens comprising a lens element and a plurality of haptics extending therefrom, at least one haptic comprising a support element attached to an anchoring filament having at least one enlarged complete or partial mushroom-shaped end having a shoulder region fixedly disposed against relative movement inside a passage in the lens element.
Claim 3
Dependent Claim
52 words
The intraocular lens of claim 1 wherein the support element comprises a curved resilient filament coextensive with the anchoring filament, the passage is blind-ended, and the width of the shoulder region of the enlarged complete or partial mushroom-shaped end is greater than the width of the passage within which it is fixed.
Claim 4
Dependent Claim
18 words
The intraocular lens of claim 2 wherein the passage is cylindrical and chordally located in the lens element.
Claim 5
Dependent Claim
30 words
The intraocular lens of claim 2 wherein the width of the passage is between 0.3 and 0.7 times the width of the enlarged complete or partial mushroom-shaped end fixed therein.
Claim 6
Dependent Claim
16 words
The intraocular lens of claim 2 wherein the anchoring filament has an enlarged complete mushroom-shaped end.
Claim 7
Dependent Claim
15 words
The intraocular lens of claim 5 wherein the mushroom-shaped end has a circular shoulder periphery.
Claim 8
Dependent Claim
15 words
The intraocular lens of claim 5 wherein the mushroom-shaped end has an elliptical shoulder periphery.
Claim 9
Dependent Claim
12 words
The intraocular lens of claim 5 wherein the mushroom-shaped end is hemispherical.
Claim 10
Dependent Claim
16 words
The intraocular lens of claim 2 wherein the anchoring filament has an enlarged partial mushroom-shaped end.
Claim 11
Dependent Claim
16 words
The intraocular lens of claim 2 wherein the enlarged mushroom-shaped end has a cupped shoulder region.
Claim 12
Dependent Claim
14 words
The intraocular lens of claim 2 wherein the lens element material is a hydrogel.
Claim 13
Dependent Claim
16 words
The intraocular lens of claim 11 wherein the hydrogel comprises a homopolymer or copolymer of N-vinyl-2-pyrrolidone.
Claim 14
Dependent Claim
14 words
The intraocular lens of claim 2 wherein the lens element material is a silicone.
Claim 15
Dependent Claim
16 words
The intraocular lens of claim 2 wherein the haptic material is a biocompatible axially oriented polymer.
Claim 16
Dependent Claim
24 words
The intraocular lens of claim 14 wherein the enlarged mushroom-shaped end is formed by heat treatment of a non-enlarged end of the anchoring filament.
Claim 17
Dependent Claim
15 words
The intraocular lens of claim 2 wherein the enlarged mushroom-shaped end is formed by molding.
Claim 18
Dependent Claim
14 words
The intraocular lens of claim 2 wherein the haptic material is a biocompatible metal.
Claim 19
Dependent Claim
25 words
The intraocular lens of claim 2 wherein each haptic has two opposing enlarged mushroom-shaped ends each fixedly disposed inside a passage in the lens element.
Claim 20
Dependent Claim
33 words
A haptic comprising a support element attached to at least one anchoring filament having a width between 0.05 mm and 0.3 mm, the anchoring filament having an enlarged complete or partial mushroom-shaped end.
Claim 21
Dependent Claim
33 words
A haptic comprising a support element attached to at least one anchoring filament having a width between 0.05 mm and 0.3 mm, the anchoring filament having an enlarged complete or partial mushroom-shaped end.
Claim 22
Dependent Claim
19 words
The haptic of claim 19 wherein the support element comprises a curved resilient filament co-extensive with the anchoring filament.
Claim 23
Dependent Claim
19 words
The haptic of claim 20 having two anchoring filaments co-extensive with the curved resilient filament at opposing ends thereof.
Claim 24
Dependent Claim
11 words
The haptic of claim 20 having an enlarged complete mushroom-shaped end.
Claim 25
Dependent Claim
14 words
The haptic of claim 22 wherein the mushroom-shaped end has a circular shoulder periphery.
Claim 26
Dependent Claim
14 words
The haptic of claim 22 wherein the mushroom-shaped end has an elliptical shoulder periphery.
Claim 27
Dependent Claim
15 words
The haptic of claim 22 wherein the haptic material is a biocompatible axially oriented polymer.
Claim 28
Dependent Claim
25 words
The haptic of claim 25 wherein the enlarged complete or partial mushroom-shaped end is formed by heat treatment of the end of the anchoring filament.
Claim 29
Dependent Claim
11 words
The haptic of claim 20 having an enlarged partial mushroom-shaped end.
Claim 30
Dependent Claim
13 words
The haptic of claim 20 wherein the haptic material is a biocompatible metal.
Claim 31
Dependent Claim
18 words
The haptic of claim 20 wherein the enlarged complete or partial mushroom shaped end is formed by molding.
Claim 32
Dependent Claim
36 words
A lens element for an intraocular lens comprising a refractive disk having at least one pre-formed cylindrical blind-ended passage with a width less than about 0.1 mm and a width/depth ratio of at least about 1/2.
Claim 33
Dependent Claim
36 words
A lens element for an intraocular lens comprising a refractive disk having at least one pre-formed cylindrical blind-ended passage with a width less than about 0.1 mm and a width/depth ratio of at least about 1/2.
Claim 34
Dependent Claim
16 words
The lens element of claim 30 wherein the width/depth ratio is between about 1/6 and 1/10.
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