Lung-venting apparatus

Surgery – Truss – Pad

Patent

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Details

137843, 251367, A61M 1600

Patent

active

040710254

ABSTRACT:
A manually operated lung-venting apparatus includes a self-expanding bladder having a bladder inlet through which treating gas is drawn into the bladder during expansion thereof and a bladder outlet through which treating gas is driven out of the bladder during compression thereof. The apparatus further comprises a valve device having a housing attached to the bladder; an inlet chamber in the housing; a valve inlet for establishing communication between the bladder and the inlet chamber; a valve outlet which is in continuous communication with the inlet chamber and which is adapted to be connected to the respiratory system of a patient. The valve device further has a movable valve member supported in the housing and cooperating with the valve inlet to open or close the same; and a control mechanism connected to the movable valve member for moving and maintaining the movable valve member in its closed position when the pressure in the inlet chamber exceeds a predetermined value above the ambient pressure and for moving and maintaining the movable valve member in its open position when the pressure in the inlet chamber is below the predetermined value.

REFERENCES:
patent: 1157655 (1915-10-01), Mayer et al.
patent: 2428451 (1947-10-01), Emerson
patent: 2902992 (1959-09-01), Renvall
patent: 3083707 (1963-04-01), Seeler
patent: 3106204 (1963-10-01), Paramelle
patent: 3262446 (1966-07-01), Stoner
patent: 3633605 (1972-01-01), Smith

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