Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1987-11-19
1992-03-03
Cohen, Lee S.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820524, A62B 902
Patent
active
050923269
ABSTRACT:
An apparatus and method for a ventilator system which may be operated over a high range of frequencies from zero (0) to fifty (50) hertz as may be predetermined. A high frequency oscillator (14) has a pneumatically operated piston drive device (16) which may be operated at a predetermined frequency, a predetermined stroke length, and at a predetermined ratio between the time periods for the pressure stroke and the suction stroke. The piston (76) is operated from a plurality of solenoid operated valves (91). A microprocessor (92) controls the electronic operation of the valves (91) by suitable output signals.
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Waugh, Jr. Howard J.
Winn Bryan D.
Cohen Lee S.
Lacyk J. P.
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