Patent US4764170A successfully refreshed from Google Patents.
US4764170A
Expired / Lapsed
US
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Apparatus for plugging an intraocular lens hole
Assignee: Individual
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Filing: 1987-01-12
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Granted: 1988-08-16
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Expires: 2007-01-12
Abstract
Abstract A hole plug for an intraocular lens for insertion into a positioning hole in a posterior chamber lens for reduction of glare, flare, reflection, radial lines or circular disks. The lens plug is opaque. The plug stops light from entering into the positioning hole. Cross-action forceps or other instruments are utilized through an incision to provide support for the optic, as well as pushing the hole plug into the positioning hole. The forceps may include a cavity to hold the plug during the insertion operation. The hole plug can also have an opaque skirt extending beyond the lens in an instance of a lens which does not cover the eye pupil.
Inventors
- 👤 Robert C. Drews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:49
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/28; A61B17/2812; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2002/1696
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
Intraocular lens hole plug comprising: a. a shaft of a predetermined length and predetermined width, and having a configured bottom; b. a head secured to said shaft and rounded about a top surface and skirt means affixed about said head; and, c. said shaft and said head composed of a material which is compatible to the intraocular lens material, as well as biocompatible to the eye.
Claim 2
Dependent Claim
66 words
Intraocular lens hole plug comprising: a. a shaft of a predetermined length and predetermined width, and having a configured bottom; b. a head secured to said shaft and rounded about a top surface and skirt means affixed about said head; and, c. said shaft and said head composed of a material which is compatible to the intraocular lens material, as well as biocompatible to the eye.
Claim 3
Dependent Claim
9 words
Plug of claim 1 wherein said material is PMMA.
Claim 4
Dependent Claim
10 words
Plug of claim 1 wherein said material is silicone rubber.
Claim 5
Dependent Claim
9 words
Plug of claim 1 wherein said material is polyurethane.
Claim 6
Dependent Claim
10 words
Plug of claim 1 wherein said skirt means is opaque.
Claim 7
Dependent Claim
9 words
Plug of claim 1 wherein said bottom is plano.
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) | 1991-08-16 | 1992-02-15 | 1992-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-16 | 1996-02-15 | 1996-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-16 | 2000-02-15 | 2000-08-16 | $7700.00 | Window Closed / Lapsed |