US4772283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corneal implant
Assignee: Individual
•
Filing: 1987-12-09
•
Granted: 1988-09-20
•
Expires: 2007-12-09
Abstract
Abstract An implant prosthesis for replacing a full or partial thickness of a cornea. Prosthesis includes a transparent lens portion, and a carrier of preserved, denatured tissue. The lens is attached to the carrier which in turn is adapted for attachment to the eye wall.
Inventors
- 👤 Thomas C. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:31
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/142
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
25 words
A corneal implant prosthesis having a transparent lenticule and a carrier attached thereto, the carrier comprising preserved denatured tissue adapted for attachment to an eye.
Claim 2
Dependent Claim
25 words
A corneal implant prosthesis having a transparent lenticule and a carrier attached thereto, the carrier comprising preserved denatured tissue adapted for attachment to an eye.
Claim 3
Dependent Claim
14 words
The prosthesis of claim 1 wherein the lenticule is made of biologically acceptable material.
Claim 4
Dependent Claim
34 words
The prosthesis of claim 1 wherein the carrier comprises an annular ring, the outer periphery thereof being adapted for attachment to the eye wall, and the inner circumferential surface being attached to the lenticule.
Claim 5
Dependent Claim
23 words
The prosthesis of claim 3 wherein the prosthesis is of a thickness suitable for replacement of the full thickness of the eye wall.
Claim 6
Dependent Claim
22 words
The prosthesis of claim 3 wherein the carrier includes a radially inwardly extendinq flange received in a complimentary qroove in the lenticule.
Claim 7
Dependent Claim
30 words
The prosthesis of claim 5 including a plurality of stakes spaced about the periphery of the lenticule, the stakes extending through a portion of the lenticule into the tissue flange.
Claim 8
Dependent Claim
16 words
The prosthesis of claim 7 wherein the preserved tissue has been denatured with formalin or gluteraldehyde.
Claim 9
Dependent Claim
18 words
The prosthesis of claim 1 wherein the carrier is of a diameter suitable for attachment to the cornea.
Claim 10
Dependent Claim
18 words
The prosthesis of claim 1 wherein the carrier is of a diameter suitable for attachment to the sclera.
Claim 11
Dependent Claim
17 words
The prosthesis of claim 1 wherein the carrier is qenerally disk shaped having anterior and posterior surface.
Claim 12
Dependent Claim
55 words
A corneal implant prosthesis having a transparent lenticule made of biologically acceptable material, and a carrier bonded thereto, the carrier comprising an annular ring of preserved, denatured biological tissue, the outer periphery of said annular ring being adapted for attachment to the eye wall and the inner circumferential surface thereof being attached to the lenticule.
Claim 13
Dependent Claim
55 words
A corneal implant prosthesis having a transparent lenticule made of biologically acceptable material, and a carrier bonded thereto, the carrier comprising an annular ring of preserved, denatured biological tissue, the outer periphery of said annular ring being adapted for attachment to the eye wall and the inner circumferential surface thereof being attached to the lenticule.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |