Surgery – Truss – Pad
Patent
1976-10-12
1979-07-17
Michell, Robert W.
Surgery
Truss
Pad
A61B 502
Patent
active
041611730
ABSTRACT:
A device for measuring blood pressure comprising a circuit having two signal paths one of which can guide the alternating current components and the other of which can guide the direct current component of the blood pressure signal, said signal paths comprising amplification and/or attenuation members so that the mutual ratio of the alternating current components and the direct current component is varied. The device furthermore comprises a summing device to recombine the two previously treated parts of the blood pressure signal and an amplifier or attenuator to make the overall amplification of the direct current component (average value) equal to unity.
REFERENCES:
patent: 3412729 (1968-11-01), Smith
patent: 3658060 (1972-03-01), Eklof
patent: 3915156 (1975-10-01), Wastl
patent: 3998550 (1976-12-01), Konishi et al.
patent: 4023563 (1977-05-01), Reynolds et al.
Berne, R. M. et al., "Cardiovascular Physiology", pp. 76, 78-82, C. V. Mosby & Co., St. Louis, Mo. 1972.
"Blood Pressure Measuring"--L. J. Fiegel, Jr., IBM Tech. Discl. Bulletin, vol. 8, No. 6, Nov. 1965, p. 871.
Crestas Hans
Zimmerman Edwin
Briody T. A.
Franzblau Bernard
Jaworski Francis J.
Michell Robert W.
U.S. Philips Corporation
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