A sealed ventilation circuit interface system, which enables simultaneous patient ventilation and safe tracheal suctioning, is structured to accommodate any of a wide variety of commercially available suction catheters. The interface system comprises a manifold assembly, and an adaptor. The manifold...http://www.google.de/patents/US5598840?utm_source=gb-gplus-sharePatent US5598840 - Apparatus and method for ventilation and aspiration
