Occlusive impedance phlebograph and method therefor

Details Occlusive impedance phlebograph and method therefor Occlusive impedance phlebograph and method therefor

1974-06-19

1976-12-14

Howell, Kyle L.

Surgery

Truss

Perineal

128 21Z, A61B 502

Patent

active

039969240

ABSTRACT:
The venous patency of a human limb is assessed by measuring the venous outflow within a defined time interval after release of a forced blockage of the venous return to the heart and correlating it, where necessary, with the increased venous volume occasioned by the forced blockage. The volume changes and outflow rate are determined from electrical impedance measurements.

REFERENCES:
patent: 3517661 (1970-06-01), Buffington
patent: 3545430 (1970-12-01), Figar
patent: 3698382 (1972-10-01), Howell
patent: 3847142 (1974-11-01), Williams, Jr. et al.
patent: 3882851 (1975-05-01), Sigworth
Hokanson, D. E., et al., IEEE Trans. on Bio-Engng., vol. BME-22, No. 1, Jan. 1975, pp. 25-29.
Jaffrin, M. Y., et al., Digest of Conf. of 3rd Intern. Conf. on Med. Physics, Goteborg, Sweden, 1972, (Wed. Aug. 2, A.M.) (p. 1).

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