Importance

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Abstract

The system and method for preventing volutrauma and barotrauma in patients connected to a ventilator or a manual ventilation system detects elevated airway pressures above a safety pressure and during a time longer than the normally used inspiratory time periods, opens a safety valve to reduce airway pressure below the dangerous values, generates an alarm and closes again the airway system allowing further ventilation. This ventilator safety valve can work repetitively thereby protecting continuously the airway, but at the same time generating a simple method of escape ventilation. Two prototypes of this invention system are build, an electric system driven by computer software written in lab view and a mechanical pneumatic system with a concertina, a spring and an air reservoir under the concertina emptying through a micro opening allowing a time delay before a valve is opened.

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First Claim