Patent ID: 6929006

Claim:
A respirator comprising: a respiration bag; a patient adapter; a tidal volume-measuring device for measuring a tidal volume V(t) between said respiration bag and said patient adapter; a first pressure-measuring means for measuring a pressure value p 1 between the patient adapter and the tidal volume-measuring device; a breathing gas interrupter in series sequence with said first pressure-measuring means between said patient adapter and said tidal volume-measuring device; a second pressure-measuring means for measuring a pressure value p 2 between said tidal volume-measuring device and said respiration bag; and a control unit connected with the tidal volume-measuring device, said first pressure measuring means and said pressure-measuring means, said control unit switching said breathing gas interrupter to a closed position when a predetermined tidal volume, V(t)=V set , is reached, and a switching said breathing gas interrupter out of the closed position when the difference between p 2 and p 1 drops below zero.