In a surgical method, a hollow needle is inserted into a hollow internal organ of a patient through a natural body opening. A wireless scanning apparatus is operated externally of the patient to obtain data as to internal structures of the patient on a side of a wall of the organ opposite the body cavity....http://www.google.com.au/patents/US7963941?utm_source=gb-gplus-sharePatent US7963941 - Intra-abdominal medical method and associated device
