Patent US3187752A successfully refreshed from Google Patents.
Patent US3971382A successfully refreshed from Google Patents.
US3971382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of non-surgical treatment of cataracts
Assignee: Individual
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Filing: 1974-11-22
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Granted: 1976-07-27
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Expires: 1994-11-22
Abstract
Abstract A method of non-surgical treatment of soft and membraneous cataracts, including congenital cataracts, said method comprising the step of cutting the anterior capsule of the lens and/or pupillary membrane without perforating injury to the eye wall with a laser beam, caused to pass through the cornea, the anterior chamber of the eye and pupil, and then be focused onto the anterior capsule of the lens and/or pupillary membrane to thus form at least one hole through which the cataract substance is thus let out of the lens capsule/soft cataract/into the anterior chamber of the eye where the substance is gradually dissolved.
Inventors
- 👤 Mikhail Mikhailovich Krasnov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:15
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/008; A61F9/00736; A61F9/00821; A61F9/00825; A61F2009/00885; A61F2009/00887
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
A method of non-surgical treatment of soft and membraneous cataracts, including congenital cataracts, said method comprising the step of cutting the anterior capsule of the lens and/or pupillary membrane without perforating injury to the eye wall with a laser beam caused to pass through the cornea, the anterior chamber of the eye and the pupil, and then be focused onto the anterior capsule of the lens and/or pupillary membrane to thus form at least one hole through which the cataract substance is thus let out of the lens capsule/soft cataract/into the anterior chamber of the eye where the substance is gradually dissolved.
Claim 2
Independent Claim
102 words
A method of non-surgical treatment of soft and membraneous cataracts, including congenital cataracts, said method comprising the step of cutting the anterior capsule of the lens and/or pupillary membrane without perforating injury to the eye wall with a laser beam caused to pass through the cornea, the anterior chamber of the eye and the pupil, and then be focused onto the anterior capsule of the lens and/or pupillary membrane to thus form at least one hole through which the cataract substance is thus let out of the lens capsule/soft cataract/into the anterior chamber of the eye where the substance is gradually dissolved.
Claim 3
Dependent Claim
22 words
A method of non-surgical treatment of cataracts as in claim 1, wherein the laser beam is produced by a pulsed Q-switched laser.
Claim 4
Dependent Claim
27 words
A method of non-surgical treatment of cataracts as in claim 1 wherein the laser beam is focused into a spot with diameter of 0.2 - 0.5 mm.
Claim 5
Dependent Claim
27 words
A method of non-surgical treatment of cataracts as in claim 1 wherein the wavelength of the laser irradiation is of 5 300 A to 10 600 A.
Claim 6
Dependent Claim
19 words
A method of non-surgical treatment of cataracts as in claim 1, wherein the laser is pulsed at least once.
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) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |