Economical transducer apparatus for use in the medical field

Details Economical transducer apparatus for use in the medical field Economical transducer apparatus for use in the medical field

1983-12-05

1985-05-14

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

128675, 338 4, G01L 122

Patent

active

045164304

ABSTRACT:
There is disclosed a medical transducer apparatus which employs composite planar members each of which is fabricated from a highly insulative material. The members are positioned in congruency and a first member which may be a composite member has a diaphragm area located on the surface thereof to which a piezoresistive gage is bonded. The gage is surrounded by an aperture in another member to enable leads from the gage to be directed to an interconnection and circuit board also fabricated from an insulator material. The structure provides isolation to the patient in regard to the biasing source used for the gage array and also provides isolation based on external voltage which serves to protect the transducer during operation.

REFERENCES:
patent: 3868719 (1975-02-01), Kurtz et al.
patent: 3951707 (1976-04-01), Kurtz et al.
patent: 4023562 (1977-05-01), Hynecek
patent: 4216404 (1980-08-01), Kurtz et al.
patent: 4314225 (1982-02-01), Tominaga et al.

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