System for determining characteristics of blood flow

Details System for determining characteristics of blood flow System for determining characteristics of blood flow

1981-07-06

1986-01-07

Howell, Kyle L.

Surgery

Truss

Pad

128677, 128693, 128713, 128734, A61B 502

Patent

active

045628432

ABSTRACT:
Method and apparatus are disclosed for determination and display of hemodynamic characteristic values of a patient in a variety of statistical forms and in relative or absolute terms, the measurement determination being made by non-invasive impedance plethysmography under control of a central processor. A characteristic value representative of variation of blood vessel cross-sectional area is measured across a patient's body section, blood pressure is measured in the body in simultaneity with the characteristic value, and signals representative of the characteristic value and blood pressure are then processed to obtain the hemodynamic characteristic values.

REFERENCES:
patent: 3920004 (1975-11-01), Nakayama
patent: 3996925 (1976-12-01), Djordjevich
patent: 4203451 (1980-05-01), Panico
Berne, R. M. et al., "Cardiovascular Physiology", C. V. Mosby Co., St. Louis, 1972, pp. 96-97.

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