A system for forming a liquid interface between a body tissue and an ultrasound probe which includes an ultrasound transducer. The system including a sheath including a liquid tight sack, wherein the sack covers, when the probe is placed inside the sheath, at least a portion of the probe where the ultrasound...http://www.google.com/patents/US6126607?utm_source=gb-gplus-sharePatent US6126607 - Ultrasound interface control system
