Artificial respiration ventilator of air constant flow

Details Artificial respiration ventilator of air constant flow Artificial respiration ventilator of air constant flow

1984-10-29

1987-01-13

Recla, Henry J.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

A61M 1600

Patent

active

046356312

ABSTRACT:
A respiratory circuit for an artificial inspiration ventilator is characterized in that it controls a volume of an O2/air constant flow as being substantially reversely proportional to a positive and negative airway pressures by patient's own respiration. The respiratory circuit comprises a pressure sensor for detecting an inner pressure of the respiratory circuit, a comparator for comparing the inner pressure with reference values prescribed by reference voltages, and a switching circuit responsive to the results of the comparator for switching a valve passing the O2/air constant flow.

REFERENCES:
patent: 2830579 (1958-04-01), Saklad et al.
patent: 3741208 (1973-06-01), Jonsson et al.
patent: 3961627 (1976-06-01), Ernst et al.
patent: 4323064 (1982-04-01), Hoenig et al.

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