Diode laser irradiation system for biological tissue...

Details Diode laser irradiation system for biological tissue... Diode laser irradiation system for biological tissue...

A - Human Necessities

61

N

A61N 5/06 (2006.01) A61N 5/067 (2006.01)

Patent

CA 2250240

This invention is a diode laser irradiation system (10) for treating biological tissue of a subject without exposing the tissue to damaging thermal effects. The system includes a manipulable wand (14) for contact with the tissue, a diode laser (70) disposed in the wand for irradiating the tissue with coherent optical energy at a power output level of less than one thousand milliwatts, and laser setting controls (24, 26) for operating the diode laser to achieve a rate of absorption and conversion to heat in the irradiated tissue in a range between a minimum rate sufficient to elevate the average temperature of the irradiated tissue to a level above the basal body temperature of the subject, and a maximum rate which is less than the rate at which the irradiated tissue is converted into a collagenous substance.

L'invention concerne un système d'irradiation par laser à diode destiné à traiter les tissus biologiques d'un sujet sans exposer ceux-ci à des effets thermiques pouvant entraîner des lésions. Le système comprend un crayon-lecteur optique manipulable venant en contact avec le tissu, un laser à diode placé dans le crayon-lecteur afin d'irradier le tissu par une énergie optique cohérente dont le niveau de sortie est inférieur à mille milliwatts, et des commandes de réglage laser pour activer le laser à diode et parvenir à une vitesse d'absorption et de conversion de chaleur sur le tissu irradié comprise entre une vitesse minimum suffisante pour élever la température moyenne du tissu irradié à un niveau supérieur à la température basale du sujet, et une vitesse maximum inférieure à la vitesse à laquelle le tissu irradié est transformé en une substance collagène.

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