Medical diagnostic apparatus

Details Medical diagnostic apparatus Medical diagnostic apparatus

1991-03-05

1992-02-25

Cohen, Lee S.

Surgery

Truss

Pad

128693, 128694, A61B 502

Patent

active

050904175

ABSTRACT:
Medical diagnostic apparatus suitable for screening use in the detection of deep veinous thrombosis in association with hip joint replacement comprises a thigh cuff (12) inflatable and deflatable to constrict and release venous blood flow in the relevant leg, a processor (10) operable automatically to control deflation of the cuff in a predetermined manner following inflation to inhibit venous flow, and a strain gauge (13) engageable around the leg below the cuff and operable to provide a signal representing venous flow caused by the controlled deflation. The deflation control is preferably effectively instantaneous by way of a solenoid valve (15) of appropriately high air flow capability.

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patent: 3847142 (1974-11-01), Williams, Jr. et al.
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patent: 4321929 (1982-03-01), Lemelson et al.
patent: 4367751 (1983-01-01), Link et al.
patent: 4574812 (1986-03-01), Arkans
Impedance Plethysmography, A Screening Procedure to Detect Deep-Vein Thrombosis J. G. Brown, P. E. Ward (now Boyd), A. J.Wilkinson, R. A. B. Mollan From the Queen's University of Belfast and Musgrave Park Hospital Mar. 1987, pp. 264-267.

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