Patent US4547915A successfully refreshed from Google Patents.
US4547915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intraocular posterior chamber lens
Assignee: Individual
•
Filing: 1984-11-16
•
Granted: 1985-10-22
•
Expires: 2004-11-16
Abstract
Abstract A new type of intraocular posterior chamber lens is provided for implantation in the eye following cataract extraction. The new lens is uniquely structured at its rear face such that, when implanted, a separation or an open zone is provided at the visual axis between the lens body and the posterior capsule so that, in the event of haziness or opacification of the posterior capsule, corrective surgery can later be provided in this open zone means that will allow a corrective or restorative opening to be made in the posterior capsule.
Inventors
- 👤 Lawrence D. Castleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:20
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2002/1681; A61F2002/1683
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
An intraocular lens for implantation in any eye having a capsule in the posterior chamber comprising: A. a lens body having an optical region, a periphery, and a surface within said periphery; B. means for fixating the lens body in operative alignment with the visual axis of the eye, said fixating means being attached to the lens body; and C. means separate from the fixating means intended for contacting the capsule extending from said surface of said lens body including a first member extending from said lens body, a second member extending from said lens body; and a third member interconnecting said first and second members and spaced from said surface of said lens body, said first, second, and third members being located transversely within the periphery of the lens body.
Claim 2
Dependent Claim
131 words
An intraocular lens for implantation in any eye having a capsule in the posterior chamber comprising: A. a lens body having an optical region, a periphery, and a surface within said periphery; B. means for fixating the lens body in operative alignment with the visual axis of the eye, said fixating means being attached to the lens body; and C. means separate from the fixating means intended for contacting the capsule extending from said surface of said lens body including a first member extending from said lens body, a second member extending from said lens body; and a third member interconnecting said first and second members and spaced from said surface of said lens body, said first, second, and third members being located transversely within the periphery of the lens body.
References Cited (Backward Citations)
US4092743A
Cited
US4244060A
Cited
US4285072A
Cited
US4343050A
Cited
US4377873A
Cited
US4412359A
Cited
US4485499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |