The present invention comprises: a search unit; a hollow guide for stabbing a subject; a manipulating device for protruding the search unit out of the tip of the guide and for moving the search unit along a predetermined orbit; device for transmitting/receiving the ultrasound during the ...http://www.google.fr/patents/US5807260?utm_source=gb-gplus-shareBrevet US5807260 - Ultrasound imaging methods and apparatus
