Device and process for metering breathing gas

Details Device and process for metering breathing gas Device and process for metering breathing gas

2005-08-16

2005-08-16

Bennett, Henry (Department: 3743)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S200240, C128S201280, C128S203280, C128S204180, C128S204210, C128S204280, C128S204290, C128S205130, C128S205140, C128S205150, C128S205170, C128S205240

Reexamination Certificate

active

06929006

ABSTRACT:
A respirator with a tidal volume-measuring device (6) between a respiration bag (8) and a patient adapter (2) provides accurate metering of the tidal volume. The device includes a first pressure-measuring device (4) and a breathing gas interruptor (5) in series sequence between the patient adapter (2) and the tidal volume-measuring device (6). A second pressure-measuring device (7) is provided between the tidal volume-measuring device (6) and the respiration bag (8). A control unit (20) is connected with the tidal volume-measuring device (6) and the pressure-measuring devices (4, 7) and sends control signals in such a way that when a predetermined tidal volume is reached, the breathing gas interrupter (5) is switched to the closed position, and that the closed position is eliminated when the pressure p2measured with the second pressure-measuring means (7) has dropped below the pressure p1determined with the first pressure-measuring means (4).

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