Patent US4601721A successfully refreshed from Google Patents.
US4601721A
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US
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Posterior chamber intra-ocular device
Assignee: Individual
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Filing: 1984-09-17
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Granted: 1986-07-22
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Expires: 2004-09-17
Abstract
Abstract A posterior chamber intra-ocular lens has first and second flexible loops attached thereto. The arcuate distance between the attachments of the loops to the lens is not more than about 90°.
Inventors
- 👤 William Kamerling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:23
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1602; A61F2/161; A61F2002/1681; A61F2002/1683
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
140 words
An intra-ocular device for implantation in the posterior chamber of an eye comprising a lens having first and second flexible loops each attached to said lens, the second loop being longer than the first loop and the free ends of said loops being approximately 180° apart so that the loops are adapted to secure the lens in the posterior chamber of an eye, and the arcuate distance between the locations at which the loops are attached to the lens being about 90° so that when the first loop is positioned in a preselected compartment in the posterior chamber of the eye at least a portion of the second loop proximal its location of attachment to the lens is also positioned in the same compartment whereby the remaining portion of the second loop can enter the compartment by rotating the lens.
Claim 2
Dependent Claim
140 words
An intra-ocular device for implantation in the posterior chamber of an eye comprising a lens having first and second flexible loops each attached to said lens, the second loop being longer than the first loop and the free ends of said loops being approximately 180° apart so that the loops are adapted to secure the lens in the posterior chamber of an eye, and the arcuate distance between the locations at which the loops are attached to the lens being about 90° so that when the first loop is positioned in a preselected compartment in the posterior chamber of the eye at least a portion of the second loop proximal its location of attachment to the lens is also positioned in the same compartment whereby the remaining portion of the second loop can enter the compartment by rotating the lens.
Claim 3
Dependent Claim
59 words
A device in accordance with claim 1 wherein one of said loops terminates at a free end portion which partially overlaps the other loop in the region where the other loop is attached to the lens so that when the first loop is positioned in a preselected compartment the second loop will be partially disposed in the same compartment.
Claim 4
Dependent Claim
175 words
An intra-ocular device for implantation in the posterior chamber of an eye comprising a transparent inert lens having first and second flexible loops attached thereto each terminating in a free end, the points of attachment of said loops to said lens being spaced an arcuate distance not more than about 90°, the second loop being longer than the first loop and the free ends of said loops being approximately 180° apart so that the loops are adapted to secure the lens in the posterior chamber of an eye, and a free end portion of said first loop partially overlapping a portion of the second loop where the latter is attached to said lens and radially outward therefrom, so that when the first loop is positioned in a preselected compartment in the posterior chamber of the eye at least a portion of the second loop proximal its location of attachment to the lens is also positioned in the same compartment whereby the remaining portion of the second loop can enter the compartment by rotating the lens.
Claim 5
Dependent Claim
175 words
An intra-ocular device for implantation in the posterior chamber of an eye comprising a transparent inert lens having first and second flexible loops attached thereto each terminating in a free end, the points of attachment of said loops to said lens being spaced an arcuate distance not more than about 90°, the second loop being longer than the first loop and the free ends of said loops being approximately 180° apart so that the loops are adapted to secure the lens in the posterior chamber of an eye, and a free end portion of said first loop partially overlapping a portion of the second loop where the latter is attached to said lens and radially outward therefrom, so that when the first loop is positioned in a preselected compartment in the posterior chamber of the eye at least a portion of the second loop proximal its location of attachment to the lens is also positioned in the same compartment whereby the remaining portion of the second loop can enter the compartment by rotating the lens.
Claim 6
Independent Claim
17 words
A device in accordance with claims 1 or 3 wherein said loops lie in a common plane.
Claim 7
Independent Claim
39 words
A device in accordance with claims 1 or 3 wherein said loops lie in converging planes and are tilted forwardly by an angle not more than about 10° so that the included angle is not less than about 160°.
References Cited (Backward Citations)
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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) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |