BREATHING APPARATUS WITH PATIENT GAS FLOW DEPENDENT SENSITIVITY.

摘要

THE INVENTION REFERS TO A BREATHING APPARATUS WITH A GAS FLOW IN BYPASS AND IN EACH ONE OF THE INSPIRATION (6) AND EXPIRATION (9) LINES A VALVE FOR THE ADJUSTMENT OF THE GAS FLOW THROUGH THESE LINES. A CONTROL ASSEMBLY (20) ACTIVATES THE VALVE SO THAT A RESPIRATORY CYCLE IS GENERATED AND DURING EXPIRATION THE GAS FLOW IN BYPASS IS MAINTAINED. THE EXPIRATION PRESSURE IS DETERMINED WITH A PRESSURE GAUGE (10). IF THIS STAYED BELOW A CERTAIN PRE-CALCULABLE VALUE, A NEW INSPIRATION PHASE WILL BE TRIGGERED. TO IMPROVE THIS TRIGGERING, THE INVENTION PROVIDES THAT THE PATIENT'S GAS FLOW IS DETERMINED WITH THE HELP OF A FLOW METER (5, 8) AND THAT THE PRECALCULABLE PRESSURE VALUE IS VARYED ACCORDING TO THIS DETERMINED GAS FLOW.