Intravascular liquid velocity sensing method using a polarograph

Details Intravascular liquid velocity sensing method using a polarograph Intravascular liquid velocity sensing method using a polarograph

1974-10-07

1976-01-06

Gaudet, Richard A.

Surgery

Truss

Perineal

128 2E, 73194F, 204195B, A61B 502

Patent

active

039304930

ABSTRACT:
The linear flow rate of a liquid containing dissolved oxygen, such as blood, can be determined by means of an electrode assembly having exposed to the liquid a relatively large polarographically active cathode and spaced therefrom a reference anode. With an applied energizing voltage of about 0.4-0.9 volts a current plateau is reached which is proportional to fluid flow rate. As the device is also sensitive to oxygen content, compensation can be measured by providing on the assembly an oxygen sensing membrane covered polarographic electrode pair of the Clark type.

REFERENCES:
patent: 1411796 (1922-04-01), Meyer
patent: 3242729 (1966-03-01), Keller
patent: 3450984 (1969-06-01), Holmes

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