EP0053384A1
Expired / Lapsed
EP
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Posterior chamber intraocular lens
Assignee: Individual
•
Filing: 1981-11-30
•
Granted: —
•
Expires: 2001-11-30
Abstract
Abstract A lens (40) for implantation in the posterior chamber (33) of the eye is provided with a structure (52) which engages the anterior surface of the iris (24) to retain the lens against posterior displacement within the eye. The lens may be utilized even if the capsule is missing or damaged.
Inventors
- 👤 Gerald D. Faulkner
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 23:14
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: 29
Claim 1
Independent Claim
61 words
A posterior chamber intraocular lens comprising: (a) an optic; (b) support means for engaging an eye structure posterior of the iris to support said optic from said eye structure and retain said optic in alignment with the anterior-posterior axis of the eye; and (c) retaining means for engaging the anterior surface of the iris to impede posterior dislocation of said optic.
Claim 2
Dependent Claim
61 words
A posterior chamber intraocular lens comprising: (a) an optic; (b) support means for engaging an eye structure posterior of the iris to support said optic from said eye structure and retain said optic in alignment with the anterior-posterior axis of the eye; and (c) retaining means for engaging the anterior surface of the iris to impede posterior dislocation of said optic.
Claim 3
Dependent Claim
45 words
A lens as claimed in claim 1 in which said support means includes a radially extensive support structure connected to said optic, said retaining means including a radially extensive retaining structure connected to said optic, said retaining structure being disposed anteriorly of said support structure.
Claim 4
Dependent Claim
45 words
A lens as claimed in claim 2 in which said retaining structure includes a plurality of radially extensive retaining elements, each of said retaining elements being connected to said optic, said retaining elements being disposed at circularly spaced locations about the axis of said optic.
Claim 5
Dependent Claim
26 words
A lens as claimed in claim 3 in which the tip of each of said retaining elements remote from said optic is devoid of sharp edges.
Claim 6
Dependent Claim
27 words
A lens as claimed in claim 4 in which each of said retaining elements includes a filament, an end of such filament being imbedded in said optic.
Claim 7
Dependent Claim
29 words
A lens as claimed in claim 5 in which the tip of each of said retaining elements is defined by a bight in the filament included in such element.
Claim 8
Dependent Claim
22 words
A lens as claimed in claim 6 in which each of said retaining elements is formed solely from one of said filaments.
Claim 9
Dependent Claim
52 words
A lens as claimed in claim 7 in which one of said filaments is formed in the shape of a U, the base of such U being remote from said optic and forming the tip of one of said retaining elements, both ends of each such filament being imbedded in said optic.
Claim 10
Dependent Claim
19 words
A lens as claimed in claim 8 in which all of said filaments are formed in said U shape.
Claim 11
Dependent Claim
52 words
A lens as claimed in claim 7 in which one of said filaments is formed in the shape of a J, the base of such J being remote from said optic and forming the tip of one of said retaining elements, only one end of such filament being imbedded in said optic.
Claim 12
Dependent Claim
19 words
A lens as claimed in claim 10 in which all of said filaments are formed in said J shape.
Claim 13
Dependent Claim
21 words
A lens as claimed in claim 11 in which the non-imbedded ends of said J-shaped filaments are devoid of sharp edges.
Claim 14
Dependent Claim
32 words
A lens as claimed in claim 3 or claim 9 or claim 12 in which only two of said retaining elements are provided, such retaining elements being diametrically opposed to one another.
Claim 15
Dependent Claim
30 words
A lens as claimed in claim . 3 or claim 9 in which the diameter across said retaining elements is less than the major diameter of the normal human iris.
Claim 16
Dependent Claim
15 words
A lens as claimed in claim 14 in which said diameter is about 7.75 mm.
Claim 17
Dependent Claim
28 words
A lens as claimed in claim 2 or claim 9 or claim 12 in which each of said retaining elements extends from the anterior surface of said optic.
Claim 18
Dependent Claim
33 words
A lens as claimed in claim 16 in which each of said retaining elements includes an anteriorly extensive portion and a radially extensive portion, said anteriorly extensive portion being connected to said optic.
Claim 19
Dependent Claim
42 words
A lens as claimed in claim 17 in which the radially extensive portion of each of said retaining elements slopes posteriorly from its juncture with the anteriorly extensive portion of such element to the tip of such element remote from said optic.
Claim 20
Dependent Claim
37 words
A lens as claimed in claim 18 in which the radially extensive portion of each of said retaining elements is disposed at an angle of about 3° to about 5° to the transaxial plane of said optic.
Claim 21
Dependent Claim
41 words
A lens as claimed in claim 3 in which said support means includes a plurality of resilient support elements extending radially outwardly from said optical element, said support elements being disposed at circularly spaced locations about the axis of said optic.
Claim 22
Dependent Claim
22 words
A lens as claimed in claim 20 in which each of said support elements is aligned with one of said retaining elements.
Claim 23
Dependent Claim
24 words
A lens as claimed in claim 21 in which only two of said support elements and only two of said retaining elements are provided.
Claim 24
Dependent Claim
34 words
A lens as claimed in claim 21 in which the minimum anterior to posterior distance between each of said retaining elements and the support element aligned therewith is between 0.5 mm. and 0.8 mm:
Claim 25
Dependent Claim
47 words
A lens as claimed in claim 23 in which each of said retaining elements slopes posteriorly towards its tip, said minimum distance with respect to each of said retaining elements being the anterior-to-posterior distance from the tip of such retaining element to the support element aligned therewith.
Claim 26
Dependent Claim
21 words
A lens as claimed in claim 20 in which said retaining elements and said support elements are formed from polypropylene filaments.
Claim 27
Dependent Claim
26 words
A lens as claimed in claim 12 in which the diameter across said retaining elements is greater than the major diameter of the normal human iris.
Claim 28
Dependent Claim
19 words
A lens as claimed in claim 26 in which the diameter across said retaining elements is about 10.5 mm.
Claim 29
Dependent Claim
30 words
A lens as claimed in claim 27 in which each of the filaments constituting one of said retaining elements is a polypropylene filament about 0.14 to 0.17 mm. in diameter.
References Cited (Backward Citations)
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