Apparatus is disclosed for non-invasively monitoring a subject's blood pressure, in which a pressure sensor assembly that includes a pressure transducer is compressed against tissue overlying an artery, with sufficient force to compress the artery. A motor first servo control system optimizes the amount...http://www.google.de/patents/US6228034?utm_source=gb-gplus-sharePatent US6228034 - Apparatus and method for non-invasively monitoring a subjects arterial blood pressure
