US4435855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal intraocular lens and a method of measuring an eye chamber size
Assignee: Individual
•
Filing: 1981-05-08
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Granted: 1984-03-13
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Expires: 2001-05-08
Abstract
Abstract A universal intraocular lens that may be implanted in an eye, in an anterior chamber, in a posterior chamber and in any size eye chamber wherein a tangential flexible strand is attached to a lens at one end and the other free end is formed into a snag resistant ring, or disc which is approximately circular to avoid injury to delicate eye tissue during implantation, centration or removal of said lens.
Inventors
- 👤 Jaswant S. Pannu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:39
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; G; G02; G02C; G02C7/00; G02C7/02; A61F2002/1681; A61F2002/1683
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
131 words
An intraocular lens comprising: a lens body; at least two spaced flexible positioning and supporting elements integrally formed with said lens body as a one-piece construction and extending radially, outwardly from the periphery of said lens body; said elements defining a continuous, substantially circular arc having a diameter greater than the diameter of said lens body, said arc curved toward said lens circumference and terminating in a free end spaced from said periphery; and snag-resistant means integrally formed on the free end of said elements for smoothly guiding and positioning the lens across contacted eye tissue when implanting the lens, said snag resistant means having an uninterrupted, continuously, smoothly curved outer periphery which merges with said free end and is substantially greater in size than the width of said flexible elements.
Claim 2
Dependent Claim
131 words
An intraocular lens comprising: a lens body; at least two spaced flexible positioning and supporting elements integrally formed with said lens body as a one-piece construction and extending radially, outwardly from the periphery of said lens body; said elements defining a continuous, substantially circular arc having a diameter greater than the diameter of said lens body, said arc curved toward said lens circumference and terminating in a free end spaced from said periphery; and snag-resistant means integrally formed on the free end of said elements for smoothly guiding and positioning the lens across contacted eye tissue when implanting the lens, said snag resistant means having an uninterrupted, continuously, smoothly curved outer periphery which merges with said free end and is substantially greater in size than the width of said flexible elements.
Claim 3
Dependent Claim
27 words
An intraocular lens as recited in claim 1 wherein there are two of said flexible positioning and supporting elements and said elements are positioned opposite one another.
Claim 4
Dependent Claim
16 words
An intraocular lens as recited in claim 1 wherein said snag-resistant means comprise a circular disc.
Claim 5
Dependent Claim
15 words
An intraocular lens as recited in claim 3 wherein said disc has an opening therethrough.
Claim 6
Dependent Claim
41 words
An intraocular lens as recited in claim 3 wherein said disc has a diameter which is at least three times greater than the width of said flexible elements and at least one-fifth as great as the width of said lens body.
Claim 7
Dependent Claim
66 words
An intraocular lens as recited in claim 1 wherein said flexible elements contain a support member integrally formed with said flexible elements and the periphery of said lens body, said support member joined to said flexible element at a position remote from the point where said flexible element contacts the periphery of said lens body, thus defining a substantially triangular support base for said flexible element.
Claim 8
Dependent Claim
23 words
An intraocular lens as recited in claim 3 wherein said circular disc and said lens body lie in substantially the same vertical plane.
Claim 9
Dependent Claim
23 words
An intraocular lens as set forth in claim 1 wherein said flexible elements and said snag-resistant means are made from a clear material.
Claim 10
Dependent Claim
23 words
An intraocular lens as set forth in claim 1 wherein said flexible elements and said snag-resistant means are made from a colored material.
Claim 11
Independent Claim
80 words
A method of measuring the size of an eye chamber by implanting a lens having tangentially resilient strands on opposed sides of an intraocular lens attached to the body of said lens; wherein the free end is connected to a snag resistant ring, adding the diameter sizes of said ring and said lens to the distance between the edge of said ring and the edge of said lens in mm. to determine the size of said eye chamber in mm.
Claim 12
Independent Claim
80 words
A method of measuring the size of an eye chamber by implanting a lens having tangentially resilient strands on opposed sides of an intraocular lens attached to the body of said lens; wherein the free end is connected to a snag resistant ring, adding the diameter sizes of said ring and said lens to the distance between the edge of said ring and the edge of said lens in mm. to determine the size of said eye chamber in mm.
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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) | 1987-03-13 | 1987-09-12 | 1988-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-13 | 1991-09-12 | 1992-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-13 | 1995-09-12 | 1996-03-13 | $7700.00 | Window Closed / Lapsed |