Apparatus and methods for measuring pulsatile blood process stre

Details Apparatus and methods for measuring pulsatile blood process stre Apparatus and methods for measuring pulsatile blood process stre

1987-11-25

1989-08-15

Pelligrino, Stephen C.

Surgery

Blood drawn and replaced or treated and returned to body

Constituent removed from blood and remainder returned to body

128674, 73700, 210782, A61M 3700

Patent

active

048570435

ABSTRACT:
A positive gauge blood pressure signal is transmitted to a gas column from a pulsatile blood flow stream hydrostatically higher than the pressure transducer. Particularly, a first conduit having a predetermined internal diameter smaller than a second conduit is connected at one end to the blood flow stream. The first conduit extends to a turnaround below the pressure transducer and is connected to the second conduit. The opposite end of the second conduit connects with the pressure transducer. The small internal diameter of the first conduit maintains the meniscus of the blood intact notwithstanding the pulsatile blood stream.

REFERENCES:
patent: Re29346 (1977-08-01), Kopp
patent: 3908653 (1975-09-01), Kettering

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