An ultrasound cavital probe suitable for transrectal or other usage, includes an ultrasound probe, having an outer housing, a pair of motors within one end of the housing, a first shaft operatively associated with one of the motors to provide longitudinal movement to the ultrasound transducer, while...http://www.google.fr/patents/US7066889?utm_source=gb-gplus-shareBrevet US7066889 - Scanning probe