Respirator with a breathing circuit
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United States of America Patent
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-
Jul 23, 2002
Grant Date -
N/A
app pub date -
Dec 27, 1999
filing date -
May 18, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved respirator with a breathing circuit (100) and a corresponding process for operating the respirator are provided. Defined breathing gas volumes can be delivered to the patient and the current operating state can be reliably monitored despite a strong breathing gas volume flow being delivered in the breathing circuit (100). A gas delivery element (1) designed as a rotary compressor is connected on the inlet side to a reversible breathing gas reservoir (7) and on the outlet side to a patient connection piece (9) for inspiration via a first gas volume flow sensor (2) with a first nonreturn valve (11). A second gas volume flow sensor (5) is located in the connection line between the patient connection piece (9) and the patient being inspirated. The patient connection piece (9) is connected for expiration to a second nonreturn valve (10) via a third gas volume flow sensor (3) and to the reversible breathing gas reservoir (7) via a controllable shut-off valve (4). At least one measuring and control device (14, 15) is connected to the gas volume flow sensors (2, 5, 3), it receives their measured signals and sends control signals to the gas delivery element (1) and to the controllable shut-off valve (4).
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