Dual-wavelength laser scalpel background of the invention

Details Dual-wavelength laser scalpel background of the invention Dual-wavelength laser scalpel background of the invention

1987-07-01

1988-12-20

Hindenburg, Max

Surgery

Truss

Pad

A61B 1736

Patent

active

047919272

ABSTRACT:
A medical laser provides to a biological target both a laser wavelength in the deep red-near infrared region of the spectrum and a wavelength in the blue-near ultraviolet region. The short wavelength blue light cuts the target tissue, while the longer-wavelength red light cauterizes. The long-wavelength radiation may be provided by an alexandrite laser, with a harmonic generator providing half the fundamental wavelength. Alternatively, the short-wavelength radiation may be provided by an alexandrite laser, with a harmonic generator providing half the fundamental wavelength. Alternatively, the short-wavelength radiation may be provided by a xenon fluoride laser, with a Raman cell shifting the radiation from the ultraviolet into the visible. Generally, at least one of the wavelengths is visible on the target and both wavelengths may readily be transmitted by conventional optical fibers.

REFERENCES:
patent: 4272733 (1981-06-01), Walling et al.
patent: 4280109 (1981-07-01), Stappaerts
patent: 4499897 (1985-02-01), Roussel
"lasers Cut a Swath in Surgical and Medical Applications" Jako IEEE, July 1985

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