A pressure sensing apparatus has a pressure sensor component that includes a pressure sensing port, a pressure sensor for sensing a pressure of a fluid in the pressure sensing port, and a digital processor communicating with the pressure sensor for performing calculations involving fluid pressures sensed....http://www.google.com.au/patents/US20060149161?utm_source=gb-gplus-sharePatent US20060149161 - System and method for measuring the pressure of a fluid system within a patient
