Miniature pressure transducer

Details Miniature pressure transducer Miniature pressure transducer

1981-04-15

1983-11-08

Reynolds, B. A.

Measuring and testing

Fluid pressure gauge

Electrical

128673, 128675, 338 38, G01L 902

Patent

active

044135289

ABSTRACT:
In an exemplary embodiment, an electrical signal is to be generated corresponding to the pressure to be measured. The pressure transducer is formed by an outer tube in which a measuring cell as well as a liquid line connected to a liquid reservoir are disposed. In order to be able to calibrate the pressure transducer at the respective place of measurement, for example, a blood vessel, the disclosure provides that the open end of the outer tube is closed by a one-way valve through which fluid can only flow out in the direction from the tube. When a slight, specific underpressure is set, the one-way valve closes and the pressure transducer can be calibrated.

REFERENCES:
patent: 2629399 (1953-02-01), Kulick
patent: 3239101 (1966-03-01), Wilson
patent: 3566875 (1971-03-01), Stoehr
patent: 4261208 (1981-04-01), Hok et al.
patent: 4297890 (1981-11-01), Hok
eds. Fleming, D. G.; Ko, W. H.; Neuman, M. R.; Indwelling and Implantable Pressure Transducers; 1977; CRC Press; pp. 3-34; 1975.

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