US4713072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implant lens and method and apparatus for its production
Assignee: Swedish Graft Technique AB
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Filing: 1986-11-19
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Granted: 1987-12-15
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Expires: 2006-11-19
Abstract
Abstract An improved intraocular or implant lens has at least the outer layer thereof consisting of a substantially water-insoluble, biodegradable and biocompatible materila. Methods of preparing such a lens and an apparatus for carrying out such a method are also disclosed.
Inventors
- 👤 Staffan F. Bowald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:11
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613; A61L; A61L27/00; A61L27/50; A61L27/52; A61L27/58; A61F2/0077; A61F2002/009; A61F2002/16965; A61F2002/1699; A61F2210/00; A61F2210/0004; A61F2250/00; A61F2250/0014; A61F2250/003; A61F2250/0031; A61L2430/00; A61L2430/16
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
30 words
An implant lens having at least the outer layer thereof consisting of substantially water-insoluble biodegradable and biocompatible material capable of providing a growth zone for the natural eye lens tissue.
Claim 2
Dependent Claim
30 words
An implant lens having at least the outer layer thereof consisting of substantially water-insoluble biodegradable and biocompatible material capable of providing a growth zone for the natural eye lens tissue.
Claim 3
Dependent Claim
18 words
A lens according to claim 1, wherein the lens comprises a lens core of a transparent, non-resorbable material.
Claim 4
Dependent Claim
27 words
A lens according to claim 2, wherein said lens core constitutes the major part of the lens and is covered by a layer of said biodegradable material.
Claim 5
Dependent Claim
14 words
A lens according to claim 1, wherein the lens entirely consists of biodegradable material.
Claim 6
Dependent Claim
26 words
A lens according to claim 4, wherein the lens comprises an envelope of a first, substantially water-insoluble solid biodegradable material enclosing a second, fluid biodegradable material.
Claim 7
Dependent Claim
15 words
A lens according to claim 5, wherein said second biodegradable material is in gel form.
Claim 8
Dependent Claim
21 words
A lens according to claim 1, wherein the biodegradable material at least in the outer part of the lens is porous.
Claim 9
Dependent Claim
21 words
A lens according to claim 1, wherein the biodegradable material at least in the outer part of the lens is microporous.
Claim 10
Dependent Claim
21 words
A lens according to claim 1, wherein the resorption period of the biodegradable material thereof is at least about four weeks.
Claim 11
Dependent Claim
19 words
A lens according to claim 9, wherein said resorption period is from about four months to about one year.
Claim 12
Independent Claim
32 words
A method of producing an implant lens, comprising the steps of providing a lens core of a solid transparent, non-resorbable material with a cover of a substantially water-insoluble, biodegradable and biocompatible material.
Claim 13
Independent Claim
32 words
A method of producing an implant lens, comprising the steps of providing a lens core of a solid transparent, non-resorbable material with a cover of a substantially water-insoluble, biodegradable and biocompatible material.
Claim 14
Independent Claim
39 words
A method of producing an implant lens, comprising the steps of providing an envelope of a first, substantially water-insoluble, biodegradable and biocompatible material, and filling it with a second biodegradable material in fluid form, and then sealing said envelope.
Claim 15
Independent Claim
39 words
A method of producing an implant lens, comprising the steps of providing an envelope of a first, substantially water-insoluble, biodegradable and biocompatible material, and filling it with a second biodegradable material in fluid form, and then sealing said envelope.
Claim 16
Independent Claim
63 words
An apparatus for producing an implant lens, comprising syringe member for holding a first, fluid lens material, an envelope member of a second lens material, communicatively connected to said syringe member, and means for permitting separation of said envelope member after it has been filled with said first material to form said implant lens wherein said first and second lens materials are biodegradable.
Claim 17
Independent Claim
63 words
An apparatus for producing an implant lens, comprising syringe member for holding a first, fluid lens material, an envelope member of a second lens material, communicatively connected to said syringe member, and means for permitting separation of said envelope member after it has been filled with said first material to form said implant lens wherein said first and second lens materials are biodegradable.
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) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |