Electret transducer for blood pressure measurement

Details Electret transducer for blood pressure measurement Electret transducer for blood pressure measurement

G - Physics

01

L

73/69

G01L 9/00 (2006.01) A61B 7/04 (2006.01)

Patent

CA 1234706

- 9 - ELECTORATE TRANSDUCER FOR BLOOD PRESSURE MEASUREMENT Abstract A back electrode has a plurality of ridges on one surface. An electret foil is spaced from the ridged surface of the back electrode. In the absent of applied pressure, a gap remains between the foil and the surface of the back electrode between the ridges. Above one applied pressure, the foil collapses between the ridges. Below a second applied pressure, the foil returns to its original position.

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