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US Patent 5807380 - Optical guide and method for use in corrective laser eye surgery

US Patent Issued on September 15, 1998
Estimated Patent Expiration Date: Icon_subject April 26, 2016Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
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Abstract

An optical guide dispenses laser light that is incident outside a selected region during laser eye surgery. The guide is formed as a body with a passageway of selected geometrical cross-section that defines a mininmum optical opening. The body has a material which circumferentially surrounds the passageway that is effective to dispense laser light incident thereto such that the energy thereof is dissipated to a level that will not affect eye tissue. A handle may optionally be provided to facilitate manipulation of the body. The passageway is preferably frustoconical. An optical system incorporates the optical guide and includes a mount that is to be placed in contact with the eye. The optical guide is secured to the mount, such as by cooperative rails and protrusions. A method is described to perform laser eye surgery using such optical guide and directing laser light along an optical path parallel to the central axis of the passageway. The laser light beam is then moved to follow a pathway that surrounds a central point. The diameter of the beam may be varied.

Inventor

Application

No. 639127 filed on 04/26/1996

US Classes:

606/5, Recurving or reshaping of the eye606/4, Ophthalmic606/166Corneal cutter or guide for corneal cutter

Field of Search

606/4, Ophthalmic606/5, Recurving or reshaping of the eye606/6, Cataracts or glaucoma606/10, Systems606/11, Beam energy control or monitoring606/12, Condition responsive606/166Corneal cutter or guide for corneal cutter

Examiners

Primary: Nasser, Robert L.

Attorney, Agent or Firm

US Patent References

4905711, Eye restraining device
Issued on: 03/06/1990
Inventor: Bennett, et al.
5092863, Ophthalmological surgery apparatus and methods
Issued on: 03/03/1992
Inventor: Schanzlin
5108412, Suction ring for surgical operations on the human eye
Issued on: 04/28/1992
Inventor: Krumeich, et al.
5133708, Method for controlled corneal ablation
Issued on: 07/28/1992
Inventor: Smith
5336215, Eye stabilizing mechanism for use in ophthalmic laser surgery
Issued on: 08/09/1994
Inventor: Hsueh, et al.
5356409, Equipment for the correction of astygmatism by remodelling the corneal surface by means of photo-ablation
Issued on: 10/18/1994
Inventor: Nizzola
5490849, Uniform-radiation caustic surface for photoablation
Issued on: 02/13/1996
Inventor: Smith
5582608, Lamellar illumination apparatus for eye surgery
Issued on: 12/10/1996
Inventor: Brown
5586980, Microkeratome
Issued on: 12/24/1996
Inventor: Kremer, et al.
5616139Method and apparatus for operating a cornea
Issued on: 04/01/1997
Inventor: Okamoto

International Class

A61M 035/00

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