An implantable, passive bio-sensor (10) for monitoring internal physiological conditions of a patient is disclosed. The bio-sensor (10) includes at least one sensor or transducer (12) for monitoring a physiological condition of the patient and a passive transponder (14) that receives sensor...http://www.google.com.au/patents/US5704352?utm_source=gb-gplus-sharePatent US5704352 - Implantable passive bio-sensor
