Non-thermal acoustic tissue modification

A - Human Necessities – 61 – N

Patent

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A61N 7/00 (2006.01)

Patent

CA 2597116

A methodology and system for modifying tissue including an acoustic transducer assembly (10) having a phased array (14) of piezoelectric elements (15) that directs the acoustic beam for a predetermined time duration at a multiplicity of target volumes (12), which target volumes contain tissue, thereby to modify the tissue in the target volumes while the acoustic beam has a pressure at target volume which lies below a cavitation threshold and the predetermined time duration is shorter than a time duration over which the acoustic beam produces thermal modification of tissue in the target volume, further including pressure sensors (29), a skin temperature sensor (34), and an electronic circuit (24) coupled to a control subsystem (42).

La présente invention concerne un procédé et un système pour modifier un tissu comprenant un ensemble de transducteurs acoustiques (10) ayant une antenne réseau à commande de phase (14) d~éléments piézoélectriques (15) qui dirige le faisceau acoustique pendant une période prédéterminée vers une multiplicité de volumes cibles (12), lesdits volumes cibles contiennent du tissu, pour modifier de cette manière le tissu dans les volumes cibles pendant que le faisceau acoustique a une pression au niveau du volume cible qui se situe sous un seuil de cavitation et la période prédéterminée est plus courte qu~une période pendant laquelle le faisceau acoustique produit une modification thermique du tissu dans le volume cible, comprenant en outre des capteurs de pression (29), un capteur de température corporelle (34) et un circuit électronique (24) couplé à un sous-système de commande (42).

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