An improved method and apparatus for non-invasively assessing one or more hemodynamic parameters associated with the circulatory system of a living organism. In one aspect, the invention comprises a method of measuring a hemodynamic parameter by measuring a non-calibrated value of the parameter non-invasively,...http://www.google.com.au/patents/US7048691?utm_source=gb-gplus-sharePatent US7048691 - Method and apparatus for assessing hemodynamic parameters within the circulatory system of a living subject
