Respirator construction

Details Respirator construction Respirator construction

1979-01-08

1980-10-14

Recla, Henry J.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820524, A61M 1600

Patent

active

042275237

ABSTRACT:
A respirator, particularly for infants, for supplying respiratory gas to a patient selectively according to an intermittent positive pressure ventilation cycle, an positive end expiratory pressure cycle, a continuous positive airway pressure cycle, and an intermittent mandatory ventilation cycle comprising, a respiration gas supply line connectable to a patient for supplying a respiratory gas to the patient, an expiration valve for switching from an inspiration phase to an expiration phase and back also connectable to the patient, and a first logic element connected to the expiration valve for switching the expiration valve from an inspiration phase to an expiration phase and back again. A pressure control system is connected to the first logic element for supplying gas at selected pressures to the expiration valve for the inspiration and expiration cycles thereof. A time control system is connected to the first logic element and the pressure control system which provides a selected time duration for an inspiration phase and an expiration phase. A source of static control pressure is derived from the respiration gas supply line and the pressure and time control systems both comprise a plurality of logic elements, each connectable to the static control pressure for controlling the inspiration and expiration phase switching, the selected pressures and the selected time durations.

REFERENCES:
patent: Re29778 (1978-09-01), Stewart
patent: 3957047 (1976-05-01), Freytag et al.
patent: 3981301 (1976-09-01), Warnow et al.
patent: 4057059 (1977-11-01), Reid, Jr.

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