US5137530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collagen treatment apparatus
Assignee: RJW ACQUISTIONS LC D/B/A 20/20 TECHNOLOGIES Inc
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Filing: 1990-06-29
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Granted: 1992-08-11
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Expires: 2010-06-29
Abstract
Abstract A method and apparatus for controlled thermal shrinkage of collagen tissue by irradiation with coherent energy in the wavelength band of 1.80 to 2.55 microns as generated by a laser. A specific application to ophthalmological corneal reshaping is described.
Inventors
- 👤 Bruce J. Sand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:53
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/008; A61F2009/00853; A61F2009/00861; A61F2009/00872
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
A system for shape modification of an eye cornea, comprising means for irradiating and shrinking selected zones of collagen tissue of the cornea with energy having a wavelength in the range of about 1.8 to 2.55 microns, and second means for measuring corneal shape before and after application of such energy to determine desired and resulting alteration of corneal refraction.
Claim 2
Independent Claim
60 words
A system for shape modification of an eye cornea, comprising means for irradiating and shrinking selected zones of collagen tissue of the cornea with energy having a wavelength in the range of about 1.8 to 2.55 microns, and second means for measuring corneal shape before and after application of such energy to determine desired and resulting alteration of corneal refraction.
Claim 3
Dependent Claim
70 words
A keratoplasty system for shape modification of an eye cornea, comprising means for irradiating and shrinking selected zones of collagen tissue of the cornea with coherent laser energy of infrared wavelength corresponding to corneal-collagen absorption coefficients in the range of about 15 to 120 cm -1 , and second means for measuring corneal shape before and after application of such energy to determine desired and resulting alteration of corneal refraction.
Claim 4
Dependent Claim
70 words
A keratoplasty system for shape modification of an eye cornea, comprising means for irradiating and shrinking selected zones of collagen tissue of the cornea with coherent laser energy of infrared wavelength corresponding to corneal-collagen absorption coefficients in the range of about 15 to 120 cm -1 , and second means for measuring corneal shape before and after application of such energy to determine desired and resulting alteration of corneal refraction.
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) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |