US4559942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method utilizing a laser for eye surgery
Assignee: Individual
•
Filing: 1984-02-29
•
Granted: 1985-12-24
•
Expires: 2004-02-29
Abstract
Abstract Surgical apparatus including laser, probe apparatus defining a radiation inlet and a radiation outlet, the radiation inlet being coupled in radiation receiving relationship to the laser, and apparatus for injecting a precisely controllable volume of air adjacent the radiation outlet.
Inventors
- 👤 William Eisenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:11
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/008; A61F9/00821; A61F2009/00861; A61F2009/00863; A61F2009/00885; A61F2009/00887; A61M; A61M1/00; A61M1/71; A61M1/74; A61M1/75; A61M1/84; A61M1/85
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
103 words
A method for eye surgery on target tissue in the eye including the steps of coupling a laser to a surgical probe apparatus defining a radiation inlet and a radiation outlet, moving the probe apparatus adjacent to the target tissue in the eye, injecting a precisely controllable volume of air between the radiation outlet and the target tissue, and providing laser radiation from the laser through the probe apparatus to the target tissue while maintaining the volume of air between the probe apparatus and the target tissue, thereby to prevent physical contact between the radiation outlet and the target tissue during laser irradiation.
Claim 2
Independent Claim
103 words
A method for eye surgery on target tissue in the eye including the steps of coupling a laser to a surgical probe apparatus defining a radiation inlet and a radiation outlet, moving the probe apparatus adjacent to the target tissue in the eye, injecting a precisely controllable volume of air between the radiation outlet and the target tissue, and providing laser radiation from the laser through the probe apparatus to the target tissue while maintaining the volume of air between the probe apparatus and the target tissue, thereby to prevent physical contact between the radiation outlet and the target tissue during laser irradiation.
Claim 3
Dependent Claim
54 words
A surgical method according to claim 1 and operative for cataract emulsification and wherein said step of providing laser radiation comprises the steps of irradiating the cataract with a pulse of radiation from a laser, removing the cataract debris created thereby, and repeating the steps of irradiating and removing until the cataract is removed.
Claim 4
Dependent Claim
44 words
A method of cataract emulsification according to claim 2 and wherein said step of irradiating the cataract with a pulse of radiation from a laser includes irradiating from a laser selected from the group including a Neodymium YAG, carbon dioxide and Erbium YLF laser.
Claim 5
Dependent Claim
31 words
A method according to claim 2 and wherein said step of providing laser radiation comprises the step of irradiating the cataract with a pulse of radiation from an Erbium YLF laser.
References Cited (Backward Citations)
US2247258A
Cited
US3084694A
Cited
US3494354A
Cited
US3471215A
Cited
US3843865A
Cited
US3804095A
Cited
US3865113A
Cited
US3913582A
Cited
US3821510A
Cited
US3982541A
Cited
US4270845A
Cited
US4069823A
Cited
US4120293A
Cited
US4249533A
Cited
US4211229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-23 | 1989-06-24 | 1989-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-23 | 1993-06-24 | 1993-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-23 | 1997-06-24 | 1997-12-24 | $7700.00 | Window Closed / Lapsed |