Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1991-12-18
1994-12-20
Asher, Kimberly L.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820428, A61M 1600, A62B 700, A62B 900, F16K 3102
Patent
active
053738420
ABSTRACT:
A respirator has a bypass gas flow and respective valves in the inspiration and expiration lines for setting the gas flow through these lines. A control unit actuates the valves so that a respiratory cycle is produced and such that the bypass gas flow is maintained during expiration. The expiration pressure is identified by a pressure sensor. When this expiration pressure falls below a prescribed value, a new inspiration phase is triggered. To improve this triggering, the patient gas flow is identified by a flow meter, and the prescribed pressure value is varied dependent on the identified patient gas flow.
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Linden Dan
Olsson Sven-Gunnar
Rydgren Goeran
Asher Kimberly L.
Siemens Aktiengesellschaft
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