A catheter type ultrasound probe having an elongated flexible catheter and a controller for a rotational driver for the ultrasound transducer on the catheter member. The device includes a flexible sheathing tube closed at the fore end, a rotatable support member located in a tip end portion of the sheathing...http://www.google.es/patents/US5596991?utm_source=gb-gplus-sharePatente US5596991 - Catheter type ultrasound probe
