Disposable transducer apparatus for an electromanometry system

Details Disposable transducer apparatus for an electromanometry system Disposable transducer apparatus for an electromanometry system

A - Human Necessities

61

B

326/13.5

A61B 5/02 (2006.01) A61B 5/0215 (2006.01) G01L 9/00 (2006.01) G01L 9/06 (2006.01)

Patent

CA 1243363

DISPOSABLE TRANSDUCER APPARATUS FOR AN ELECTROMANOMETRY SYSTEM Abstract of the Invention The disposable transducer includes a small housing constructed of lightweight plastic material. The housing is shaped so as to form a transparent chamber within which is situated a very small piezoresistive strain gauge in the form of a resistive bridge network diffused onto a semiconductor substrate. The semiconductor substrate is electrically isolated by means of a nonconductive gel which partially fills the transparent chamber in which the semiconductor substrate is positioned. The resistive bridge network of the semiconductor substrate is also electrically connected to a plurality of calibration resistors which are separately formed on the semiconductor substrate, making the entire apparatus economically disposable after a single use.

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