Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1982-04-16
1984-03-20
Recla, Henry J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820421, 91 33, 415125, 417176, 137865, 13762522, 13762565, A61M 1600
Patent
active
044374615
ABSTRACT:
A valve respirator device for use both on human and on animal patients. The device comprises a housing having an inport, an outport and an exhaust port. The outport is connected to the patient's respiratory system, the inport is connected to a source of air and the exhaust port is open to the surrounding atmosphere. To that end, in alternating succession, first the inport and then the exhaust port is in fluid communication with the outport. A slotted, rotatable valve cylinder is utilized as a means for providing alternating fluid communication first between the inport and the outport and then between the outport and the exhaust port. The device further comprises a metering plate which is interposed in the path of fluid communication between the outport and the other two respective ports. In that regard, the metering plate includes several apertures which regulate the volume and other flow characteristics of air passing between these respective ports. The device is constructed as a modular assembly so that the various component parts comprising the device may readily be substituted for, cleaned or repaired. Flow characteristics of the device may readily be changed by using interchangeable metering plates or valve cylinders. Other features of the device include heating means, warning means which signal a malfunction in the device, a pressure relief valve for preventing overinflation of the patient's lungs and an exhaust port valve for regulating the patient's exhalation rate.
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Bruno, Alien Property Custodian-S.N. 347,414, 5/11/43.
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