An in vivo rezero apparatus for a pressure transducer is disclosed. This invention includes embodiments where both sides of the pressure transducer are exposed to atmospheric pressure to rezero the pressure transducer and embodiments where both sides of the pressure transducer are exposed to physiologic...http://www.google.com.au/patents/US5788642?utm_source=gb-gplus-sharePatent US5788642 - In vivo rezero apparatus for a pressure transducer
