US4990150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bandage for maintaining anterior chamber of eye
Assignee: Hoya Corp
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Filing: 1989-07-07
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Granted: 1991-02-05
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Expires: 2009-07-07
Abstract
Abstract The bandage for maintaining the anterior chamber of an eye according to the present invention is formed so as to cover an incision during operation and to tightly contact with the incision and its circumference, has a small hole for insertion of instruments for operation and is transparent. This bandage can prevent the outflow of aqueous humor through an incision during ocular operation without conducting the temporary suture of incision and thereby enables ocular operation in a state where the anterior chamber is maintained. Therefore, the bandage has solved various problems (e.g. complicated operation procedure, long operation time, high invasion associated with operation) encountered in the conventional ocular operation wherein the incision is temporarily sutured to prevent the outflow of aqueous humor therethrough and thereby to maintain the anterior chamber.
Inventors
- 👤 Kazuo Tsubota
- 👤 Hiroshi Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:09
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F13/00; A61F13/12; A61F13/122; A61F13/124; A61F2013/00089; A61F2013/00182; A61F2013/00361; A61F2013/00365; A61F2013/00497
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
115 words
A bandage having anterior and posterior surfaces and a peripheral edge for maintaining the anterior chamber of an eye during an opthalmic operation, which is formed so as to cover the outer front surface of the eye and an incision therethrough during said operation and to tightly contact the incision and its circumference so as to prevent the outflow of aqueous humor from the anterior chamber, said bandage having a small hole extending from said anterior surface to said posterior surface inside said peripheral edge for insertion of instruments for said operation, said small hole being in a position on said bandage to substantially overlie the incision during said operation, and said bandage being transparent.
Claim 2
Dependent Claim
115 words
A bandage having anterior and posterior surfaces and a peripheral edge for maintaining the anterior chamber of an eye during an opthalmic operation, which is formed so as to cover the outer front surface of the eye and an incision therethrough during said operation and to tightly contact the incision and its circumference so as to prevent the outflow of aqueous humor from the anterior chamber, said bandage having a small hole extending from said anterior surface to said posterior surface inside said peripheral edge for insertion of instruments for said operation, said small hole being in a position on said bandage to substantially overlie the incision during said operation, and said bandage being transparent.
Claim 3
Dependent Claim
25 words
A bandage for maintaining the anterior chamber of an eye according to claim 1, which has a circular or oval shape and a curved section.
Claim 4
Dependent Claim
21 words
A bandage for maintaining the anterior chamber of an eye according to claim 1, which comprises a soft material having elasticity.
Claim 5
Dependent Claim
61 words
A bandage for maintaining the anterior chamber of an eye according to claim 3, wherein the soft material having elasticity is selected from the group consisting of a hydroxyethyl methacrylate homopolymer, a copolymer comprising hydroxyethyl methacrylate as a monomer component, a copolymer comprising vinyl pyrrolidone as a monomer component, a polyvinyl alcohol type polymer, a silicone rubber and a butyl rubber.
Claim 6
Dependent Claim
43 words
A bandage for maintaining the anterior chamber of an eye according to claim 1, wherein the small hole for insertion of instruments for said operation has a shape selected from the group consisting of a circle, a line, a rectangle and a triangle.
Claim 7
Dependent Claim
23 words
A bandage for maintaining the anterior chamber of an eye according to claim 1, which has at least one large opening or cut-out.
Claim 8
Dependent Claim
40 words
A bandage for maintaining the anterior chamber of an eye according to claim 6, wherein said at least one large opening has a shape selected from the group consisting of a circle, an oval, a trapezoid and a trapezoid-like shape.
Claim 9
Dependent Claim
24 words
A bandage for maintaining the anterior chamber of an eye according to claim 6, wherein said at least one cut-out has a fan shape.
Claim 10
Dependent Claim
36 words
A method for maintaining the anterior chamber of an eye in an ocular operation, said method comprising the step of placing a bandage as defined in claim 1, in contact with the cornea of an eye.
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) | 1994-02-04 | 1994-08-06 | 1995-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-04 | 1998-08-06 | 1999-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-04 | 2002-08-06 | 2003-02-05 | $7700.00 | Window Closed / Lapsed |