Surgical laser instrument

Details Surgical laser instrument Surgical laser instrument

1990-10-10

1992-03-24

Pellegrino, Stephen C.

Surgery

Instruments

Light application

606 15, 606 16, 128398, 21912162, A61B 1736

Patent

active

050984276

ABSTRACT:
A surgical laser instrument suitable for the alternate contant cutting and no-contact coagulating of biological tissue by means of a fiber-optically guided irradiation of a laser. Radiation which is emitted by the pyrolytic glowing of at least partially carbonized biological tissue, is received by the distal end of the fiber-optic light guide, guided back to a radiation detector, and is detected in a spectral region between 0.3 and 0.9 .mu.m, while the laser radiation is filtered out. The radiation output of the laser is controlled by means of the detector output signal, to a value under the destruction threshold of the fiber-optic light guide in such a manner that the radiation emitted during the burning of the biological tissue to be cut as well as of the tissue residues adhering to the distal end of the fiber-optic light guide and burnt into it, does not exceed a predetermined value.

REFERENCES:
patent: 4519390 (1985-05-01), Horne
patent: 4693244 (1987-09-01), Daikuzono
patent: 4702245 (1987-10-01), Schroder et al.
patent: 4719912 (1988-01-01), Weinberg
patent: 4741612 (1988-05-01), Birngruber et al.
patent: 4938205 (1990-07-01), Nudelman
patent: 4939336 (1990-07-01), Meyer et al.
Brochure (2 pages) Medical Excimer Laser, Technolas Laser Technick GmbH, Lochhamer Schlag 19, D-8032 Grafelfing, W. Germany, May 17, 1990.

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