U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Cornea laser-cutting apparatus

Patent 4887592 Issued on December 19, 1989. Estimated Expiration Date: Icon_subject June 2, 2007. Estimated 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.

Patent References

3096767

3419321

3534462

3710798

3848970

Acoustooptic mode-locker frequency doubler
Patent #: 3947780
Issued on: 03/30/1976
Inventor: Rice ,   et al.

Laser beam aligning apparatus
Patent #: 4123143
Issued on: 10/31/1978
Inventor: Yachin ,   et al.

Apparatus for machining material
Patent #: 4275288
Issued on: 06/23/1981
Inventor: Makosch ,   et al.

Apparatus and process for recurving the cornea of an eye
Patent #: 4461294
Issued on: 07/24/1984
Inventor: Baron

Method and apparatus for removing cataractous lens tissue by laser radiation
Patent #: 4538608
Issued on: 09/03/1985
Inventor: L'Esperance, Jr.

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Inventor

Application

No. 056711 filed on 06/02/1987

US Classes:

606/5, Recurving or reshaping of the eye219/121.6, Using laser219/121.7, Hole punching219/121.78, Beam position control606/18Mirror

Examiners

Primary: Cohen, Lee S.
Assistant: Shay, David M.

Attorney, Agent or Firm

International Class

A61N 005/06

Abstract

A cornea laser-cutting apparatus adapted for use in cutting out a cornea of patient's or donor's eye in full thickness cornea transplanting surgery or keratoplasty. The cornea laser-cutting apparatus comprises an HF or Er-YAG laser source and a projection optical system for converging laser beams radiated from the laser source in a ring-like shape on the cornea, and includes an axicon lens or mirror movably mounted for varying the size of the ring-like shape.

Other References

  • "Polarization Effects of Axicons" (Applied Optics, vol. 18, No. 5, Mar. 1, 1979)
  • "Linear, Annular, and Radial Focusing With Axicons and Applications to Laser Machining" (Applied Optics, vol. 17, No. 10, May 15, 1978)
  • "The Axicon: A New Type of Optical Element" (Journal of the Optical Society of America, vol. 44, No. 8, Aug. 1954)
  • Advertisement for a Model 294 Erbium: YAG Laser Offered For Sale by the Quantronix Corp
  • "Limbectomies, Keratectomies, and Keratostomies Performed With a Rapid-Pulsed Carbon Dioxide Laser", American Journal of Ophthalmology, vol. 71, No. 6, Jun. 1971
  • "Excimer Laser Ablation of the Cornea and Lens", American Journal of Ophthalmology, vol. 92, No. 6, Jun. 198
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