US4946450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glucan/collagen therapeutic eye shields
Assignee: Large Scale Biology Corp
•
Filing: 1989-04-18
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Granted: 1990-08-07
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Expires: 2009-04-18
Abstract
Abstract A therapeutic eye shield comprising from about 50% to about 80% collagen and from about 20% to about 50% glucan is disclosed. The collagen acts as a drug delivery system for the therapeutic agent, glucan. The therapeutic eye shields are useful for prophylaxis and treatment of eye infections particularly following ophthalmic surgery or wounding.
Inventors
- 👤 Robert L. Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:03
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K31/715; A61K9/00; A61K9/0012; A61K9/0048; A61K9/0051
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
40 words
A therapeutic eye shield comprising a mixture of a therapeutically effective amount of glucan, and sufficient collagen to hold the glucan and form said therapeutic eye shield of sufficient dimensions to substantially cover a cornea when applied to an eye.
Claim 2
Dependent Claim
40 words
A therapeutic eye shield comprising a mixture of a therapeutically effective amount of glucan, and sufficient collagen to hold the glucan and form said therapeutic eye shield of sufficient dimensions to substantially cover a cornea when applied to an eye.
Claim 3
Dependent Claim
23 words
The therapeutic eye shield of claim 1 wherein said glucan is present from about 20% to about 50% by weight of said shield.
Claim 4
Dependent Claim
23 words
The therapeutic eye shield of claim 2 wherein said collagen is present from about 50% to about 80% by weight of said shield.
Claim 5
Dependent Claim
12 words
The therapeutic eye shield of claim 1 wherein said collagen is crosslinked.
Claim 6
Dependent Claim
12 words
The therapeutic eye shield of claim 3 wherein said collagen is crosslinked.
Claim 7
Dependent Claim
15 words
The therapeutic eye shield of claim 1 wherein said glucan is a water soluble glucan.
Claim 8
Dependent Claim
15 words
The therapeutic eye shield of claim 3 wherein said glucan is a water soluble glucan.
Claim 9
Dependent Claim
15 words
The therapeutic eye shield of claim 6 wherein said water soluble glucan is phosphorylated glucan.
Claim 10
Dependent Claim
15 words
The therapeutic eye shield of claim 7 wherein said water soluble glucan is phosphorylated glucan.
Claim 11
Dependent Claim
13 words
The therapeutic eye shield of claim 9 wherein said collagen is methylated collagen.
Claim 12
Dependent Claim
13 words
The therapeutic eye shield of claim 10 wherein said collagen is methylated collagen.
Claim 13
Dependent Claim
35 words
The therapeutic eye shield of claim 1 wherein said eye shield is substantially oval in shape, has a thickness from about 0.0125 millimeter to about 0.0725 millimeter and a base curve of about 9.0 millimeters.
Claim 14
Dependent Claim
35 words
The therapeutic eye shield of claim 3 wherein said eye shield is substantially oval in shape, has a thickness from about 0.0125 millimeter to about 0.0725 millimeter and a base curve of about 9.0 millimeters.
Claim 15
Dependent Claim
35 words
The therapeutic eye shield of claim 5 wherein said eye shield is substantially oval in shape, has a thickness from about 0.0125 millimeter to about 0.0725 millimeter and a base curve of about 9.0 millimeters.
Claim 16
Dependent Claim
35 words
The therapeutic eye shield of claim 7 wherein said eye shield is substantially oval in shape, has a thickness from about 0.0125 millimeter to about 0.0725 millimeter and a base curve of about 9.0 millimeters.
Claim 17
Dependent Claim
44 words
The therapeutic eye shield of claim 10 wherein said The therapeutic eye shield of claim 1 wherein said eye shield is substantially oval in shape, has a thickness from about 0.0125 millimeter to about 0.0725 millimeter and a base curve of about 9.0 millimeters.
Claim 18
Dependent Claim
35 words
The therapeutic eye shield of claim 12 wherein said eye shield is substantially oval in shape, has a thickness from about 0.0125 millimeter to about 0.0725 millimeter and a base curve of about 9.0 millimeters.
Claim 19
Dependent Claim
19 words
A method of treating eye infections by applying the therapeutic eye shield of claim 1 to an infected eye.
Claim 20
Dependent Claim
29 words
A method of enhancing healing of an eye after surgery or wounding by applying the therapeutic eye shield of claim 1 to an eye after ophthalmic surgery or wounding.
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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) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |