US4305905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the terminal sterilization of intraocular lens
Assignee: Individual
•
Filing: 1980-07-21
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Granted: 1981-12-15
•
Expires: 2000-07-21
Abstract
Abstract Intraocular lenses are terminally sterilized without any significant chemical change in the surface of the lenses by placing the intraocular lenses in a 5% to 10% sodium hydroxide solution for from 24 hours to 3 hours, respectively, and storing the intraocular lenses in the same solution until they are used.
Inventors
- 👤 Miles A. Galin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:24
CPC Classifications
A; A61; A61L; A61L12/00; A61L12/08; A61L12/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
53 words
A process for the terminal sterilization of an intraocular lens without significant chemical change in the lens surface which comprises placing the intraocular lens in a 5% to 10% sodium hydroxide solution for from 24 hours to 3 hours, respectively, and storing the intraocular lens in the same solution until it is used.
Claim 2
Dependent Claim
53 words
A process for the terminal sterilization of an intraocular lens without significant chemical change in the lens surface which comprises placing the intraocular lens in a 5% to 10% sodium hydroxide solution for from 24 hours to 3 hours, respectively, and storing the intraocular lens in the same solution until it is used.
Claim 3
Dependent Claim
45 words
The process as defined by claim 1 wherein the intraocular lens is placed in a 5% sodium hydroxide solution at about 20° C.-33° C. for 24 hours and the intraocular lens is stored in the same solution at about 20° C. until it is used.
Claim 4
Dependent Claim
45 words
The process as defined by claim 1 wherein the intraocular lens is placed in a 10% sodium hydroxide solution at about 20° C.-33° C. for 3 hours and the intraocular lens is stored in the same solution at about 20° C. until it is used.
Claim 5
Dependent Claim
17 words
The process as defined by claim 1 wherein said intraocular lens is a polymethylmethacrylate looped intraocular lens.
Claim 6
Dependent Claim
55 words
The process as defined by claim 1 wherein said solution with the intraocular lens therein is contained in an alkali-resistant polymethylpentene container, and further including the step of subsequently blister wrapping the container in polyethylene sheeting and exposing the exterior of the package to gaseous ethylene oxide to thereby sterilize the exterior of the container.
References Cited (Backward Citations)
US4013576A
Cited
US4230663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |