A planar pressure transducer is disclosed which is useful for interposing between living tissue and a medical device that applies pressure to the tissue in order to estimate the pressure applied to a selected area of the tissue. The planar pressure transducer comprises a pair of opposed plates between...http://www.google.co.uk/patents/US6636760?utm_source=gb-gplus-sharePatent US6636760 - Planar transducer for measuring biomedical pressures