Laser treatment apparatus

Details Laser treatment apparatus Laser treatment apparatus

1985-01-11

1988-01-12

Kamm, William E.

Surgery

Truss

Pad

A61B 1736

Patent

active

047184167

ABSTRACT:
Medical apparatus for performing treatment with a laser beam includes a laser oscillator generating a laser beam which is transmitted over an optical fiber to a hand piece including a plurality of rectangularly sectioned light guides, or kaleidoscopes, each having an incident end and an emission end. The kaleidoscopes are arranged in a side-by-side configuration in a hand piece. The emission end of the optical fiber is connected to an iron sleeve which is slidably mounted in the hand piece to permit movement of the iron sleeve in a direction parallel to lines connecting the ends of the kaleidoscopes. A plurality of electromagnets equal in number to the number of kaleidoscopes are mounted in the hand piece and aligned with the kaleidoscopes. Selective energization of the electromagnets is operable to optically couple the emission end of the optical fiber to incident ends of individual kaleidoscopes. The kaleidoscopes provide multiple internal reflections such that uniform energy distribution radiation patterns are formed at the emission ends of the kaleidoscopes. A plurality of such radiation patterns are obtained at the emission end of the hand piece in precise alignment. A protective transparent plate is detachably mounted to the emission ends of the kaleidoscopes and permit the hand piece to be placed directly in contact with the body part to be treated.

REFERENCES:
patent: 3467098 (1969-09-01), Ayres
patent: 4146856 (1979-03-01), Jaeschke
patent: 4327738 (1982-05-01), Green et al.
patent: 4427881 (1984-01-01), Ruell
patent: 4529875 (1985-07-01), Brogardh et al.
"Multispot Laser Photocoagulation System Using a Fiber Bundle Scanner", Fujii et al., Applied Optics, Oct. 1982.
Rev. Sci. Instrum., vol. 51, No. 3, "Production of Flat Top Beam Profiles for High Energy Lasers"; Grojean et al.; 1980.

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