Optics for medical laser

Patent 5289557 Issued on February 22, 1994. Estimated Expiration Date:

February 23, 2013. 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.

Abstract Claims Description Full Text

Patent References

3348547

3769963

Mechanical control system particularly useful for directing a laser beam
Patent #: 4228341
Issued on: 10/14/1980
Inventor: Zandberg

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Patent #: 4491131
Issued on: 01/01/1985
Inventor: Vassiliadis

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Patent #: 4494540
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Inventor: Erb

Laser surgery
Patent #: 4503854
Issued on: 03/12/1985
Inventor: Jako

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Inventors

Assignee

Premier Laser Systems, Inc.

Application

No. 021354 filed on 02/23/1993

US Classes:

292/336.3, OPERATORS WITH KNOBS OR HANDLES385/119With lens or mirror

Examiners

Primary: Gonzalez, Frank

Attorney, Agent or Firm

Knobbe, Martens, Olson & Bear

Foreign Patent References

329353 EP. 02/13/1989
372885 EP. 12/13/1989
2199960 GB. 06/13/1990

International Class

G02B 006/42

Abstract

A visible helium neon beam is used as an aiming beam to establish a spot at which a carbon dioxide beam also focuses. The carbon dioxide beam is then employed to vaporize biotic material. A distal end of an articulated arm may couple with the micromanipulator to direct the carbon dioxide beam from the laser through a waveguide and into the micromanipulator. Another aspect of the invention includes introducing the aiming beam into the waveguide through a dichroic mirror positioned in a knuckle joint of the articulated arm. In one embodiment, a laser diode generates the visible light of the aiming beam, and is disposed proximate to the distal end of the articulated arm.

Other References

Jako, et al., "Carbon Dioxide Laser Microsurgery and its Applications i Laryngology", Department of Otogaryngology, Boston University School of Medicine, Boston, Mass., pp. 330-339
200A Micromanipulator, Minnesota Laser Corporation, May 1987
CO₂ Laser Micromanipulator for Microscopes and Colposcopes, TTI Medical. (date not available