Patent US3703176A successfully refreshed from Google Patents.
US3703176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slit lamp photocoagulator
Assignee: SRI International Inc
•
Filing: 1970-05-28
•
Granted: 1972-11-21
•
Expires: 1990-05-28
Abstract
Abstract A combination slit lamp and laser photocoagulator for treating eye disorders in which the laser is coupled to the slit lamp through an articulated arm. The slit lamp optics are arranged such that the laser beam is always in focus at the focus of the slit lamp and one lens in the laser optics is movable so as to vary the point on the eye where the laser impinges. A shutter blocks most of the laser output but permits a small amount to pass for alignment purposes. Means are provided to vary the power of the laser beam which is applied to the eye and indicating means are provided to indicate the amount of power. Means are also provided for varying the spot size of the laser where it impinges upon the eye.
Inventors
- 👤 Arthur Vassiliadis
- 👤 Harold C Zweng
- 👤 Norman A Peppers
- 👤 Lloyd E Alterton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:57
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/008; A61F9/00821; A61B; A61B90/00; A61B90/50; A61F2009/00861; A61F2009/00863; A61F9/009
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
100 words
Photocoagulation apparatus for treating a patient''s eye comprising viewing optics adapted to be positioned adjacent the patient''s eye, means for providing a photocoagulation treatment beam, optical means for coaxially coupling said viewing optics and said means for providing a photocoagulation treatment beam into the patient''s eye whereby the beam can be focused on a particular portion of the patient''s eye, said optical means including means for adjusting the focus of Said viewing optics to that particular portion, said optical system including lateral adjustment means for laterally displacing said beam with respect to the patient''s eye independent of said viewing optics.
Claim 2
Dependent Claim
100 words
Photocoagulation apparatus for treating a patient''s eye comprising viewing optics adapted to be positioned adjacent the patient''s eye, means for providing a photocoagulation treatment beam, optical means for coaxially coupling said viewing optics and said means for providing a photocoagulation treatment beam into the patient''s eye whereby the beam can be focused on a particular portion of the patient''s eye, said optical means including means for adjusting the focus of Said viewing optics to that particular portion, said optical system including lateral adjustment means for laterally displacing said beam with respect to the patient''s eye independent of said viewing optics.
Claim 3
Dependent Claim
100 words
Photocoagulation apparatus for treating a patient''s eye comprising viewing optics adapted to be positioned adjacent the patient''s eye, means for providing a photocoagulation treatment beam, optical means for coaxially coupling said viewing optics and said means for providing a photocoagulation treatment beam into the patient''s eye whereby the beam can be focused on a particular portion of the patient''s eye, said optical means including means for adjusting the focus of Said viewing optics to that particular portion, said optical system including lateral adjustment means for laterally displacing said beam with respect to the patient''s eye independent of said viewing optics.
Claim 4
Dependent Claim
100 words
Photocoagulation apparatus for treating a patient''s eye comprising viewing optics adapted to be positioned adjacent the patient''s eye, means for providing a photocoagulation treatment beam, optical means for coaxially coupling said viewing optics and said means for providing a photocoagulation treatment beam into the patient''s eye whereby the beam can be focused on a particular portion of the patient''s eye, said optical means including means for adjusting the focus of Said viewing optics to that particular portion, said optical system including lateral adjustment means for laterally displacing said beam with respect to the patient''s eye independent of said viewing optics.
Claim 5
Dependent Claim
15 words
Photocoagulation apparatus in accordance with claim 1 wherein said viewing optics comprises a slit lamp.
Claim 6
Dependent Claim
24 words
Photocoagulation apparatus in accordance with claim 1 wherein said lateral adjustment means comprises a manually movable lens disposed in the path of said beam.
Claim 7
Dependent Claim
31 words
Photocoagulation apparatus in accordance with claim 1 including shutter beams movable into and out of the path of said beam to block all but an aiming beam portion of said beam.
Claim 8
Dependent Claim
16 words
Photocoagulation apparatus in accordance with claim 1 wherein said photocoagulation treatment beam means comprises a laser.
Claim 9
Dependent Claim
113 words
Photocoagulation apparatus for treating a patient''s eye, comprising a slit lamp adapted to be positioned adjacent the patient''s eye, a continuous wave laser for generating a beam, means for coupling said laser beam to said slit lamp comprising a control box and an articulated arm which extends between said control box and said slit lamp, said control box including adjustable optical means disposed in the path of said laser beam and adjustable to vary the portion of said laser beam transmitted therethrough and including a photodiode, means to deflect a predetermined portion of said laser beam to said photodiode, and means connected to said photodiode for indicating the power of said laser beam.
Claim 10
Dependent Claim
113 words
Photocoagulation apparatus for treating a patient''s eye, comprising a slit lamp adapted to be positioned adjacent the patient''s eye, a continuous wave laser for generating a beam, means for coupling said laser beam to said slit lamp comprising a control box and an articulated arm which extends between said control box and said slit lamp, said control box including adjustable optical means disposed in the path of said laser beam and adjustable to vary the portion of said laser beam transmitted therethrough and including a photodiode, means to deflect a predetermined portion of said laser beam to said photodiode, and means connected to said photodiode for indicating the power of said laser beam.
Claim 11
Dependent Claim
52 words
The apparatus of claim 6 including shutter movable into and out of the path of said laser beam and adapted to block all but a small portion of said laser beam when in the path thereof, said shutter means comprising a dielectric coated glass vane and a solenoid for moving said vane.
References Cited (Backward Citations)
SU245278A1
Cited
CA727217A
Cited
US3084694A
Cited
US3096767A
Cited
US3348547A
Cited
US3481340A
Cited
US3467099A
Cited
FR1526979A
Cited
US3528424A
Cited
US3535027A
Cited
US3487835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |