US4377329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact lens or the like
Assignee: LYNELL MEDICAL TECHNOLOGY Inc A DE CORP
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Filing: 1980-02-26
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Granted: 1983-03-22
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Expires: 2000-02-26
Abstract
Abstract The invention contemplates improved extraocular-lens structures for contact with the cornea of a human eye, to be worn in place of spectacles. The construction features a lens element of requisite prescription power but of diameter which substantially equals or only slightly exceeds the fully dilated pupil size of the wearer, and fenestrated haptic structure engaged to the lens extends radially outwardly and is so thin and axially compliant as to be self-conforming to the curvature of the cornea and to effectively adhere thereto, thus stabilizing the lens for retention of its position on the optical axis of the eye.
Inventors
- 👤 Stanley Poler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:57
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; G02C7/049; G02C7/047; G02C7/048; G02C2202/00; G02C2202/16
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
99 words
A contact lens assembly adapted for self-adherent removable mounting to the cornea of an eye, comprising a circular lens element, and haptic means peripherally engaging and mounting said lens element, said haptic means being of sheet material including integrally formed axially compliant radially outward foot formations extending outward of said lens element at angularly spaced locations, said foot formations being substantially fenestrated and being of such compliant action as to bendably deform in continuous smooth conformance to the surface curvature of the cornea and to adhere thereto solely through contact with natural moisture of the surface of the cornea.
Claim 2
Dependent Claim
99 words
A contact lens assembly adapted for self-adherent removable mounting to the cornea of an eye, comprising a circular lens element, and haptic means peripherally engaging and mounting said lens element, said haptic means being of sheet material including integrally formed axially compliant radially outward foot formations extending outward of said lens element at angularly spaced locations, said foot formations being substantially fenestrated and being of such compliant action as to bendably deform in continuous smooth conformance to the surface curvature of the cornea and to adhere thereto solely through contact with natural moisture of the surface of the cornea.
Claim 3
Dependent Claim
49 words
The lens assembly of claim 1, in which the locus of outer ends of said foot formations, in flattened state, is a generally circular perimeter of minimum diametral span which is at least no greater than the span of the substantially great-circle arc between conjunctiva limits of the eye.
Claim 4
Dependent Claim
36 words
The lens assembly of claim 1, in which the locus of outer ends of said foot formations, in flattened state, is a generally circular perimeter of minimum diametral span in the range 9 to 15 mm.
Claim 5
Dependent Claim
60 words
The lens assembly of claim 1, in which said haptic is of fenestrated sheet material, whereby the effective surface area of said haptic is reduced by fenestration radially outside said lens element, the locus of outer ends of said foot formations being a generally circular perimeter, the fenestrated area within said locus being substantially greater than said effective surface area.
Claim 6
Dependent Claim
26 words
The lens assembly of claim 4, in which the fenestrated area within said locus is at least four times the end area of said lens element.
Claim 7
Dependent Claim
22 words
The lens assembly of claim 1, in which the diameter of said lens element is in the range 5 to 7 mm.
Claim 8
Dependent Claim
21 words
The lens assembly of claim 1, in which the diameter of said lens element is no greater than substantially 6 mm.
Claim 9
Dependent Claim
21 words
The lens assembly of claim 1, in which the diameter of said lens element is no greater than substantially 5 mm.
Claim 10
Dependent Claim
16 words
The lens assembly of claim 1, in which said lens element is of optically finished glass.
Claim 11
Dependent Claim
14 words
The lens assembly of claim 9, in which said haptic means is of plastic.
Claim 12
Dependent Claim
14 words
The lens assembly of claim 9, in which said haptic means is of glass.
Claim 13
Dependent Claim
29 words
The lens assembly of claim 1, in which said lens element is of a first plastic material, and in which said haptic means is of a second plastic material.
Claim 14
Dependent Claim
39 words
The lens assembly of claim 1, in which said haptic means comprises two pieces of transparent sheet material laminated to opposite axial sides of said lens element and laminated to each other at regions radially outside said lens element.
Claim 15
Dependent Claim
65 words
The lens assembly of claim 1, in which said haptic means comprises two pieces of sheet material having registering circular apertures of diameter less than the outer diameter of said lens element, said sheet-material pieces being in lapped engagement with opposite axial sides of said lens element at the rim region thereof and being laminated to each other at regions radially outside said lens element.
Claim 16
Dependent Claim
36 words
The lens assembly of claim 1, in which said haptic means comprises a single piece of sheet material having a central aperture at which the periphery of said lens element is secured to said sheet material.
Claim 17
Dependent Claim
34 words
The lens assembly of claim 1, in which said lens element is of optically finished glass and said haptic means is of transparent glass sheet bonded to the posterior surface of said lens element.
Claim 18
Dependent Claim
62 words
The lens assembly of any one of claims 13, 14, 15 and 16, in which said haptic means in the region radially outside said lens element is fenestrated to an area extent which exceeds the remaining effective haptic area radially outside said lens element, and in which said remaining effective haptic area is at least twice the area of said lens element.
Claim 19
Dependent Claim
51 words
The lens assembly of claim 13 or claim 14, in which said haptic mean is characterized by multiple fenestrations in the region radially outside said lens element, the minimum width of all fenestrations in said region being substantially greater than the overall laminated thickness of said two pieces of sheet material.
Claim 20
Dependent Claim
42 words
The lens assembly of claim 1, in which said foot formations are four in number, at substantially equal angular spacing, each foot formation comprising angularly spaced generally radial leg elements integrally interconnected at their radially outer ends by a transverse bridge element.
Claim 21
Dependent Claim
22 words
The lens assembly of claim 19, in which said bridge element is generally arcuate about the central axis of said lens element.
Claim 22
Dependent Claim
38 words
The lens assembly of claim 19, in which the radial extent of one diametrically opposed pair of foot formations exceeds that of the other pair, thereby recognizably establishing a major-axis orientation that is characteristic of said haptic means.
Claim 23
Dependent Claim
36 words
The lens assembly of claim 21, in which said lens element is of optically finished glass, with an astigmatism-corrective axis having a predetermined angular orientation with respect to the characteristic major-axis orientation of said haptic means.
Claim 24
Dependent Claim
31 words
The lens assembly of claim 19, in which each of said leg elements is slotted along its length, the slot width being in excess of the thickness of said haptic means.
Claim 25
Dependent Claim
30 words
The lens assembly of claim 19, in which each said bridge element is slotted along its length, the slot width being in excess of the thickness of said haptic means.
Claim 26
Dependent Claim
14 words
The lens assembly of claim 9, in which said optically finished glass is photochromic.
Claim 27
Dependent Claim
74 words
The lens assembly of claim 1, in which said haptic means includes an annular region radially outside said lens element and of maximum diameter corresponding to the maximum diameter of the iris, said haptic means in said annular region being effectively opaque and characterized by external appearance decor and coloring to suit the eye of a patient and to simulate the iris of the patient, said foot formations extending radially outside said annular region.
Claim 28
Dependent Claim
36 words
The lens assembly of claim 26, in which said annular region is characterized by foraminous apertures of effective diameter less than substantially 0.005 inch and at least as great as the thickness of said annular region.
Claim 29
Dependent Claim
22 words
The lens assembly of claim 1, in which said haptic means is of thickness at least no greater than substantially 0.002 inch.
Claim 30
Dependent Claim
21 words
The lens assembly of claim 1, in which maximum thickness is at least no greater than substantially 0.006 inch (0.15 mm).
Claim 31
Dependent Claim
24 words
The lens assembly of claim 14, in which said sheet-material pieces are laminated to said lens element at lapped engagement with said rim region.
Claim 32
Dependent Claim
32 words
The lens assembly of claim 13 or claim 14, in which the respective sheet pieces are of different materials, the anterior piece being of lower inherent friction coefficient than the posterior piece.
Claim 33
Dependent Claim
36 words
The lens assembly of claim 13 or claim 14, in which the posterior surface of the posterior sheet piece is characterized by greater surface roughness than that of the anterior surface of the anterior sheet piece.
Claim 34
Dependent Claim
24 words
The lens assembly of claim 1, in which said haptic means integrally includes a peripherally continuous rim, said foot formations terminating at said rim.
References Cited (Backward Citations)
FR908135A
Cited
FR946877A
Cited
US3594074A
Cited
US3973838A
Cited
US4095878A
Cited
US4171878A
Cited
US4080709A
Cited
US4122556A
Cited
US4126904A
Cited
US4332443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |