Apparatus for correlating the respiratory and cardiac cycles

Details Apparatus for correlating the respiratory and cardiac cycles Apparatus for correlating the respiratory and cardiac cycles

1975-06-02

1977-06-28

Michell, Robert W.

Surgery

Truss

Perineal

128DIG29, A61B 502, A61B 508

Patent

active

040318842

ABSTRACT:
An apparatus for correlating the respiratory and cardiac cycles includes a circuit for defining a chosen period in the progress of the respiratory cycle as the end of a regulatable delay beginning when the ascending front of the inspiratorial pressure reaches a regulatable level as well as a circuit for defining a chosen period in the progress of the cardiac cycle as the end of a regulatable delay beginning when the differential dV/dt of the blood pressure reaches a regulatable level. An operator such as a terminal relay is activated upon the coincidence of these two periods in time after a regulatable delay and during a regulatable period.

REFERENCES:
patent: 3513832 (1970-05-01), Klemm et al.
patent: 3572317 (1971-03-01), Wade
patent: 3618592 (1971-11-01), Stewart
patent: 3871361 (1975-03-01), Kamen

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