An ultrasound therapy probe includes a therapy transducer movably mounted on a probe body, a partially deformable flexible casing disposed around the therapy transducer, and a guard ring that limits deformations of the flexible casing when the transducer moves with respect to the probe body. The therapy...http://www.google.fr/patents/US6371903?utm_source=gb-gplus-shareBrevet US6371903 - Therapy probe
