A system is disclosed for the use of two mechanical ventilators, wherein one of the ventilators is used to ventilate both lungs of a patient and the second ventilator is used to inflate a pneumobelt or similar device. Both ventilators are controlled to asynchronously cycle off and on at different times....http://www.google.se/patents/US5359999?utm_source=gb-gplus-sharePatent US5359999 - Asynchronous cycling of mechanical ventilators
