Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1997-08-25
1999-09-28
Lewis, Aaron J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820519, A62B 700
Patent
active
059571306
ABSTRACT:
A device for compensating for flow resistance in an expiratory section of a ventilator system has a bellows system whose increase in volume during expiration is regulated by a regulatory device and a control unit, so that expired gas fills the bellows system. The increase in volume is regulated according to values measured for pressure so virtually complete compensation for flow resistance is attained. Pressure is measured with a first pressure gauge located by the bellows system, and a second pressure gauge located by the patient. The device can be a separate apparatus which is connectable to a ventilator, or can be totally integrated into the ventilator.
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Jalde Fredrik
Krahbichler Erik
Lewis Aaron J.
Siemens Elema AB
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