US4715858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epicorneal lens
Assignee: Individual
•
Filing: 1986-07-25
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Granted: 1987-12-29
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Expires: 2006-07-25
Abstract
Abstract A synthetic epicorneal lens for use in the treatment of refractive errors. The lens is of a plastic that is compatible with the cornea, may be gas permeable or metabolite permeable, and may be coated with a basement membrane material such as fibronectin or laminen. The lens can be made from polymers, hydrogel, silicone, fluoropolymer, cellulose acetate butyrate, or other like material.
Inventors
- 👤 Richard L. Lindstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:22
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/142; A61F2/145; A61F2/147; A61F2/15
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
37 words
Synthetic epicorneal lens comprising: a. lens optic of a bio-compatible material which is gas permeable or metabolite permeable; and, b. coating of a basement membrane over the entire upper surface of said lens for enhancing epithelium growth.
Claim 2
Dependent Claim
37 words
Synthetic epicorneal lens comprising: a. lens optic of a bio-compatible material which is gas permeable or metabolite permeable; and, b. coating of a basement membrane over the entire upper surface of said lens for enhancing epithelium growth.
Claim 3
Dependent Claim
11 words
Lens of claim 1 wherein said lens is made of silicone.
Claim 4
Dependent Claim
11 words
Lens of claim 1 wherein said lens is made of hydrogel.
Claim 5
Dependent Claim
12 words
Lens of claim 1 wherein said lens is made of a polymer.
Claim 6
Dependent Claim
11 words
Lens of claim 1 wherein said basement membrane material is fibronectin.
Claim 7
Dependent Claim
11 words
Lens of claim 1 wherein said basement membrane material is laminen.
Claim 8
Dependent Claim
14 words
Lens of claim 1 wherein said bottom surface is coated with said basement membrane.
Claim 9
Dependent Claim
14 words
Lens of claim 1 wherein said lens is provided with a plurality of holes.
Claim 10
Dependent Claim
12 words
Lens of claim 8 wherein said holes are filled with a material.
Claim 11
Dependent Claim
61 words
Epicorneal lens comprising: a. lens optic means having upper and lower surfaces for implant in an eye between a stroma and epithilium of the eye; b. said lens optic means of a synthetic biocompatible material; and, c. a basement membrane material completely coating at least one of said surfaces of said lens optic means with a material for enhancing epithelium growth.
Claim 12
Dependent Claim
61 words
Epicorneal lens comprising: a. lens optic means having upper and lower surfaces for implant in an eye between a stroma and epithilium of the eye; b. said lens optic means of a synthetic biocompatible material; and, c. a basement membrane material completely coating at least one of said surfaces of said lens optic means with a material for enhancing epithelium growth.
Claim 13
Dependent Claim
9 words
Lens of claim 10 wherein said material is laminen.
Claim 14
Dependent Claim
9 words
Lens of claim 10 wherein said material is fibronectin.
Claim 15
Dependent Claim
14 words
Lens of claim 10 wherein said lens optic means includes a plurality of fenestrations.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |