Patent ID: 8357112
Filing Date: 2013-01-22
Classification: A61B,A61K,A61M

Abstract:
1. A method of controlling release of materials carried by ultrasound sensitive particles, the method comprising: irradiating a plurality of sub-groups of ultrasound sensitive particles with an ultrasonic pulse having an acoustic property selected so as to interact with ultrasound sensitive particles within one sub-group of the plurality of sub-groups, and thus causing release of material carried by the ultrasound sensitive particles of the one sub-group, while avoiding release of material carried by ultrasound sensitive particles within at least one other sub-group of the plurality of sub-groups, wherein the ultrasound sensitive particles within the one sub-group have an acoustic activation property different from a corresponding acoustic activation property of the ultrasound sensitive particles within the at least one other sub-group, causing each respective sub-group to interact independently with the ultrasonic pulse.