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US3930504A
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US
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Portable light coagulator
Assignee: CLINITEX Inc
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Filing: 1973-12-21
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Granted: 1976-01-06
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Expires: 1993-12-21
Abstract
Abstract A light coagulator for treatment of eye disorders is provided, utilizing a converging light beam, a collimated lens system and a mirror to deliver a high powered beam of light to the eye for use as a surgical tool. The light coagulator of the invention is of simplified design and portable.
Inventors
- 👤 Hughes de Laforcade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:14
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/0079; A61B; A61B18/00; A61B18/18; A61B18/20; A61F9/008; G; G02; G02B; G02B19/00; G02B19/0004; G02B19/0028; G02B19/0033; G02B19/0047; A61B2018/00636; A61F2009/00861; A61F2009/00863; A61F2009/00876; A61F9/00821
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
171 words
A light coagulator comprising in combination an arc-lamp parallel light beam source, a first lens for focusing at least a portion of the light into a beam of light converging toward a focal point and then diverging, an adjustable aperture diaphragm situated at said focal point for permitting adjustment of the size of the image field in the desired target area, a second lens situated in the path of the diverging light beam for directing said diverging beam into a parallel light beam and a rotatable mirror positioned in the path of said parallel beam, for reflecting said beam to a target area, said mirror having an aperture therethrough for observation of the target area wherein said light source is a lamp backed by a rotationally symetric concave reflector which directs the light forward in a parallel beam toward said first lens, and wherein an aperture diaphragm is positioned between said light source and said first lens to control the size of the light passing through siad first and second lenses.
Claim 2
Dependent Claim
171 words
A light coagulator comprising in combination an arc-lamp parallel light beam source, a first lens for focusing at least a portion of the light into a beam of light converging toward a focal point and then diverging, an adjustable aperture diaphragm situated at said focal point for permitting adjustment of the size of the image field in the desired target area, a second lens situated in the path of the diverging light beam for directing said diverging beam into a parallel light beam and a rotatable mirror positioned in the path of said parallel beam, for reflecting said beam to a target area, said mirror having an aperture therethrough for observation of the target area wherein said light source is a lamp backed by a rotationally symetric concave reflector which directs the light forward in a parallel beam toward said first lens, and wherein an aperture diaphragm is positioned between said light source and said first lens to control the size of the light passing through siad first and second lenses.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1 wherein said rotationally symetric concave reflector is a paraboloid reflector.
Claim 4
Dependent Claim
28 words
The system of claim 1 wherein said light source is a Xenon arc lamp at a rated power of at least 150 watts backed by a paraboloid reflector.
Claim 5
Dependent Claim
27 words
The apparatus of claim 1 wherein said focal point is situated between said first and second lenses, the lenses being situated so that their focal points coincide.
Claim 6
Dependent Claim
22 words
The apparatus of claim 1 wherein said mirror is situated to direct said parallel light beam to a portion of an eye.
Claim 7
Dependent Claim
28 words
The aperture of claim 1 wherein said mirror has an observation aperture therethrough and a light filter positionable over said aperture to protect the eye of the observer.
Claim 8
Dependent Claim
14 words
The apparatus of claim 1 wherein said aperture diaphram is an adjustable aperture diaphragm.
Claim 9
Dependent Claim
43 words
The apparatus of claim 1 wherein said second lens is of smaller radius of curvature than said first lens to form a resultant parallel light beam that is increased in intensity and reduced in diameter to pass through the pupil of the eye.
Claim 10
Dependent Claim
32 words
The apparatus of claim 1 wherein means are provided to adjust the light output intensity of said light source and said light source has a shutter to cut off said light beam.
Claim 11
Dependent Claim
49 words
The apparatus of claim 1 wherein said focal point is situated between said first and second lenses, said mirror has an observation aperture therethrough, a first light diaphragm is positioned between said light source and said first lens and a second light diaphragm is positioned proximate said focal point.
Claim 12
Dependent Claim
20 words
The apparatus of claim 1 wherein said first and second lenses are coated achromat lenses and said apparatus is portable.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |