Control for laser hemangioma treatment system

Details Control for laser hemangioma treatment system Control for laser hemangioma treatment system

1980-06-23

1982-02-23

Cohen, Lee S.

Surgery

Truss

Pad

219121LB, A61B 1736

Patent

active

043164676

ABSTRACT:
A laser for directing a nominally 5 micron wavelength beam at a hemangioma or other variegated lesion. A fiber optic bundle for intercepting radiation reflected from the lesion at an intensity corresponding with the color intensity of the region at which the beam is directed. The output beam from the fiber optic bundle modulates a photodetector stage whose amplified output drives a galvanometer. The galvanometer shaft is coupled to the shaft of a potentiometer which is adjustable to regulate the laser power supply and, hence, the laser output energy level so laser beam energy is reduced when high absorption regions in the lesion are being scanned by the beam and increased as low absorption regions are being scanned.

REFERENCES:
patent: 3068739 (1962-12-01), Hicks, Jr. et al.
patent: 3388461 (1968-06-01), Lins
patent: 4072147 (1978-02-01), Hett
patent: 4126136 (1978-11-01), Auth et al.
patent: 4240431 (1980-12-01), Komiya

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