Pressure controlled breathing apparatus

Details Pressure controlled breathing apparatus Pressure controlled breathing apparatus

1978-07-17

1980-06-17

Recla, Henry J.

Surgery

Respiratory method or device

12820426, 12820524, 12820716, 137493, 251333, A61M 1600

Patent

active

042078849

ABSTRACT:
A medical patient or other individual exhales air through a pressure control exhalation valve at a pressure which remains substantially constant during exhalation and corresponds to the residual pressure desired within the lungs. The pressure control exhalation valve incorporates a disc-like valve member which is biased towards a closed position by a spring having a low spring modulus, and the spring engages a back-up plunger which is adjustable according to the desired residual lung pressure. The pressure control valve may be connected in series with a flow control or retard valve which is adjustable to produce a biofeedback pressure within the valve for teaching the individual to breathe slower and with less effort. During inhalation, pressurized air may be supplied to the pressure control exhalation valve through a demand inhalation valve which is adjustable to a supply pressure corresponding to the preselected exhalation pressure in order to provide for continuous positive pressure breathing.

REFERENCES:
patent: 731973 (1903-06-01), Teter
patent: 1068800 (1913-07-01), McSpirit
patent: 1162416 (1915-11-01), Teter
patent: 1244661 (1917-10-01), Teter
patent: 2121311 (1938-06-01), Anderson et al.
patent: 2771321 (1956-11-01), Alric
patent: 3097642 (1963-07-01), Russell
patent: 3457949 (1969-07-01), Coulter
patent: 3881480 (1975-05-01), Lafourcade
patent: 3933171 (1976-01-01), Hay

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