Patent US3578990A successfully refreshed from Google Patents.
Patent US5295989A successfully refreshed from Google Patents.
US5295989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light cable for use in an apparatus for ophthalmic operation using a laser beam
Assignee: Nidek Co Ltd
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Filing: 1992-05-29
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Granted: 1994-03-22
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Expires: 2012-05-29
Abstract
Abstract A light cable in an apparatus for ophthalmic operation using a laser beam, which introduces the laser beam into a delivery optical system by being connected with the apparatus body in which a laser system and a laser control system are provided, is disclosed. The light cable is constituted of a number of optical fibers for illumination light and a optical fiber for laser beam constitute, which optical fibers for illumination light are arranged around the optical fiber for laser beam in at least the end of emitting light beam of the optical fibers.
Inventors
- 👤 Hirokazu Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:05
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/008; A61F9/00821; G; G02; G02B; G02B6/00; G02B6/04; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B2018/2205; A61B2018/2211; A61B90/00; A61B90/30; A61B2090/306; A61F9/009
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
169 words
An ophthalmic operation apparatus using a laser beam, in which the laser beam is introduced to a patient's eye for ophthalmic operation, the apparatus comprising: a body in which a laser beam oscillator is disposed; a source of illumination light; an ophthalmic operation microscope for observing an affected part of the patient's eye; a delivery optical system, mounted in said ophthalmic operation microscope, for introducing the laser beam and the illumination light into the patient's eye; a light cable connecting the apparatus with the delivery optical system, including a plurality of optical illumination fibers on which the illumination light is incident and an optical laser fiber on which the laser beam is incident, wherein said optical illumination fibers are arranged around the optical laser fiber at least at an end of the cable where an illumination light beam of the optical illumination fibers is emitted, and the end of the cable is arranged at a conjugate position with the affected part of the eye to the delivery optical system.
Claim 2
Dependent Claim
169 words
An ophthalmic operation apparatus using a laser beam, in which the laser beam is introduced to a patient's eye for ophthalmic operation, the apparatus comprising: a body in which a laser beam oscillator is disposed; a source of illumination light; an ophthalmic operation microscope for observing an affected part of the patient's eye; a delivery optical system, mounted in said ophthalmic operation microscope, for introducing the laser beam and the illumination light into the patient's eye; a light cable connecting the apparatus with the delivery optical system, including a plurality of optical illumination fibers on which the illumination light is incident and an optical laser fiber on which the laser beam is incident, wherein said optical illumination fibers are arranged around the optical laser fiber at least at an end of the cable where an illumination light beam of the optical illumination fibers is emitted, and the end of the cable is arranged at a conjugate position with the affected part of the eye to the delivery optical system.
Claim 3
Dependent Claim
49 words
An ophthalmic operation apparatus using a laser beam according to claim 1 wherein the opthalmic operation microscope further comprises a pole for supporting the ophthalmic operation microscope, and the source of illumination light includes an illumination unit fixed in said pole and having the optical illumination fibers connected thereto.
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) | 1997-03-21 | 1997-09-20 | 1998-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-21 | 2001-09-20 | 2002-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-21 | 2005-09-20 | 2006-03-22 | $7700.00 | Window Closed / Lapsed |