Laser debridement of wounds

Details Laser debridement of wounds Laser debridement of wounds

1991-04-02

1993-05-04

Aschenbrenner, Peter A.

Surgery

Instruments

Light application

128669, 606 19, 606 3, A61B 500

Patent

active

052076717

ABSTRACT:
A technique is disclosed for wound debridement in which a pulsed CO.sub.2 laser beam is caused to impinge upon exposed tissue with individual pulses sufficiently energetic to ablate a thin layer of tissue. Each pulse has a time duration short enough to avoid deleterious heat penetration but long enough so that it does not cause atmospheric breakdown. The CO.sub.2 laser, with a wavelength in the far infrared region, is operated to produce a pulsed beam with individual pulses having an energy of about one joule per pulse or greater. The beam is focused to produce a beam diameter with a fluence of approximately ten joules per square centimeter at the tissue to be ablated and with a pulse repetition rate of approximately one hundred pulses per second and a pulse duration between one microsecond and ten microseconds.

REFERENCES:
patent: 3913582 (1975-10-01), Sharon
patent: 4917083 (1990-04-01), Harrington et al.
patent: 4917084 (1990-04-01), Sinofsky
patent: 5074306 (1991-12-01), Green et al.
New Trends in CO.sub.2 Laser Microsurgery, Miller, pp. 173-182, 1980.
Use of a Carbon Dioxide Laser For The Debridement of Third Degree Burns: Levine et al, Annals of Surgery, vol. 179, No. 2, pp. 246-252, Feb. 1974.
Laser Excision of Acute Third Degree Burns Followed by Immediate Autograft Replacement: An Experimental Study in the Pig, Stellar et al, Journal of Trauma, vol. 13, No. 1, pp. 45-53, Jan. 1973.

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