A positioner for centering or otherwise situating medical devices such as biopsy needles with respect to a human body includes a clamp for receiving a portion of the human body (e.g., a breast), a carriage which moves along a carriage path next to the clamp, and a positioning arm pivotally mounted to...http://www.google.se/patents/US6558337?utm_source=gb-gplus-sharePatent US6558337 - Positioner for medical devices such as biopsy needles
