US4681585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intraocular implant
Assignee: Intermedics Intraocular Inc
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Filing: 1986-03-13
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Granted: 1987-07-21
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Expires: 2006-03-13
Abstract
Abstract An intraocular implant having an optic lens and haptic for fixation of said lens in the posterior or anterior chamber of the eye, said implant having thermal stability sufficient to render said implant autoclave sterilizable, said implant being chemically stable when sterilized with high energy radiation, said optical lens consisting essentially of a solid thermoplastic polymer which is substantially transparent to visible light, is biocompatible, has a glass transition temperature of at least 120 DEG C. and is thermally stable at a temperature of at least 120 DEG C., and has a notched Izod impact strength at about one-eighth inch thickness of about at least one foot pound per inch, said thermoplastic polymer having repeating units of aromatic groups linked together by one or more of the following linkages: ether, ester, sulphone, carbonyl and imide.
Inventors
- 👤 Reizo Sayano
- 👤 Eugene P. Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:10
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1602; A61F2/161; A61F2/1605; A61L; A61L27/00; A61L27/14; A61L27/50; A61L2430/00; A61L2430/16
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
138 words
An intraocular implant consisting essentially of an optic lens and haptic for fixation of said lens in the posterior or anterior chamber of the eye, said implant having thermal stability sufficient to render said implant autoclave sterilizable, said implant being chemically stable when sterilized with high energy radiation, said optical lens consisting essentially of a solid thermoplastic polymer which is substantially transparent to visible light, is biocompatible, has a glass transition temperature of at least 120° C. and is thermally stable at a temperature of at least 120° C., and has a notched Izod impact strength at about one-eighth inch thickness of about at least one foot pound per inch, said thermoplastic polymer having repeating units of aromatic groups linked together by one or more linkages selected from the group consisting of ether, ester, sulphone, carbonyl and imide.
Claim 2
Dependent Claim
138 words
An intraocular implant consisting essentially of an optic lens and haptic for fixation of said lens in the posterior or anterior chamber of the eye, said implant having thermal stability sufficient to render said implant autoclave sterilizable, said implant being chemically stable when sterilized with high energy radiation, said optical lens consisting essentially of a solid thermoplastic polymer which is substantially transparent to visible light, is biocompatible, has a glass transition temperature of at least 120° C. and is thermally stable at a temperature of at least 120° C., and has a notched Izod impact strength at about one-eighth inch thickness of about at least one foot pound per inch, said thermoplastic polymer having repeating units of aromatic groups linked together by one or more linkages selected from the group consisting of ether, ester, sulphone, carbonyl and imide.
Claim 3
Dependent Claim
28 words
An intraocular implant according to claim 1 wherein the haptic and optic lens are integral and the lens and haptic consist essentially of the same thermoplastic solid polymer.
Claim 4
Dependent Claim
21 words
An intraocular implant according to claims 1 or 2 wherein said aromatic group is phenyl, biphenyl, naphthyl, anthracyl, phenathryl or alkylidenediphenyl.
Claim 5
Dependent Claim
15 words
The intraocular implant according to claims 1 or 2 wherein said thermoplastic polymer is polycarbonate.
Claim 6
Dependent Claim
13 words
The intraocular implant of claim 4 wherein the repeating aromatic groups are alkylidenediphenyl.
Claim 7
Dependent Claim
12 words
The intraocular implant of claim 5 wherein said alkylidenediphenyl is para, para'-isopropylidenediphenol.
Claim 8
Dependent Claim
15 words
The intraocular implant of claims 1 or 2 wherein said thermoplastic polymer is a polyarylate.
Claim 9
Dependent Claim
22 words
The intraocular implant of claim 7 wherein the repeating units in said polyarylate are iso - and terephthalate and a para, para'-isopropylidenediphenol.
Claim 10
Dependent Claim
16 words
The intraocular implant of claims 1 or 2 wherein said thermoplastic polymer is an aromatic polysulfone.
Claim 11
Dependent Claim
19 words
The intraocular implant of claim 9 wherein the repeating aromatic units in said polysulfone is phenyl and para, para'-isopropylidenediphenyl.
Claim 12
Dependent Claim
13 words
The intraocular implant of claim 10 wherein said polysulfone also has ether linkages.
Claim 13
Dependent Claim
17 words
The intraocular implant of claim 1 or 2 wherein said thermoplastic polymer has ether and imide linkages.
Claim 14
Dependent Claim
15 words
The intraocular implant of claims 1 or 2 wherein said thermoplastic polymer has carbonyl linkages.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |