US5137728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ophthalmic article
Assignee: Bausch and Lomb Inc
•
Filing: 1988-12-22
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Granted: 1992-08-11
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Expires: 2008-12-22
Abstract
Abstract An ocular insert for insertion into the cul de sac of the eye which is a substantially circular disc having a concave posterior surface and a convex anterior surface with a radius of curvature less than that of the sclera and a center thickness of less than about 1.5 mm.
Inventors
- 👤 Rajan Bawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:44
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0048; A61K9/0051; A61F; A61F9/00; A61F9/0008; A61F9/0017
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
93 words
An ocular insert for use behind an eyelid, comprising a substantially circular disc having a concave posterior surface and a convex anterior surface wherein the radius of curvature of said posterior surface is less than the radius of curvature of the sclera of the eye, the center thickness of said insert is less than about 1.5mm and the ratio of the radius of curvature of said posterior surface to the radius of curvature of the sclera is less than about 0.8mm wherein incorporated in said ocular insert a medicinal agent is incorporated therein.
Claim 2
Dependent Claim
93 words
An ocular insert for use behind an eyelid, comprising a substantially circular disc having a concave posterior surface and a convex anterior surface wherein the radius of curvature of said posterior surface is less than the radius of curvature of the sclera of the eye, the center thickness of said insert is less than about 1.5mm and the ratio of the radius of curvature of said posterior surface to the radius of curvature of the sclera is less than about 0.8mm wherein incorporated in said ocular insert a medicinal agent is incorporated therein.
Claim 3
Dependent Claim
100 words
An ocular insert capable of dispensing a medicinal agent directly to the eye comprising a substantially circular disc having a concave posterior surface for placement in contact with the sclera of the eye and a convex anterior surface for placement in contact with an eyelid and wherein the radius of curvature of said osterior surface is less than the radius of curvature of the sclera, the center thickness of said insert is less than about 1.5mm, and the ratio of the curvature of said posterior concave surface to the radius of curvature of the sclera is less than about 0.8mm.
Claim 4
Dependent Claim
100 words
An ocular insert capable of dispensing a medicinal agent directly to the eye comprising a substantially circular disc having a concave posterior surface for placement in contact with the sclera of the eye and a convex anterior surface for placement in contact with an eyelid and wherein the radius of curvature of said osterior surface is less than the radius of curvature of the sclera, the center thickness of said insert is less than about 1.5mm, and the ratio of the curvature of said posterior concave surface to the radius of curvature of the sclera is less than about 0.8mm.
Claim 5
Dependent Claim
25 words
The insert of claim 1 wherein the radius of curvature of said anterior surface is less than the radius of curvature of said posterior surface.
Claim 6
Dependent Claim
16 words
The insert of claim 1 wherein the thickness of said insert is less than about 1mm.
Claim 7
Dependent Claim
18 words
The insert of claim 1 wherein he diameter of said insert is between about 3 to about 6mm.
Claim 8
Dependent Claim
21 words
The insert of claim 1 wherein said insert is formed from materials selected from non-bioerodible hydrophilic, hydrophobic, bioerodible and biodegradable materials.
Claim 9
Dependent Claim
17 words
The insert of claim 6 wherein said insert is formed from bioerodible, biodegradable or non-bioerodible hydrophilic materials.
Claim 10
Dependent Claim
25 words
The insert of claim 2 wherein the radius of curvature of said anterior surface is less than the radius of curvature of said posterior surface.
Claim 11
Dependent Claim
12 words
The insert of claim 8 wherein said insert comprises a polymeric material.
Claim 12
Dependent Claim
14 words
The insert of claim 9 wherein the diameter is about 3.5 to about 4.5mm.
Claim 13
Dependent Claim
17 words
The insert of claim 9 wherein the thickness of said insert is less than about 1 mm.
Claim 14
Dependent Claim
13 words
The insert of claim 9 wherein said insert is formed from non-bioerodible materials.
Claim 15
Dependent Claim
15 words
The insert of claim 12 wherein said insert is formed from materials containing hydroxyalkyl esters.
Claim 16
Dependent Claim
13 words
The insert of claim 9 wherein said insert is formed from hydrophobic materials.
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) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |