Patent ID: 8151790
Filing Date: 2012-04-10
Classification: A61H,A61M

Abstract:
1. A device to augment circulation during the performance of cardiopulmonary resuscitation in a patient in cardiac arrest, the device comprising: a housing having a rescuer port and a patient port, an exhalation one way valve and an inhalation one way valve which is biased in a closed position; wherein the housing and one way valves are configured such that a volume of respiratory gas expelled from the lungs during each chest compression enters the housing through the patient port, passes through the exhalation one way valve and exits the rescuer port, and wherein, when the chest wall recoils, oxygen containing gasses are prevented from entering the lungs through the rescuer port by both of the one way valves; a ventilation source to inject an oxygen-containing gas into the housing, to open the inhalation one way valve, and to pass through the rescuer port and to the patient to periodically expand the lungs with the oxygen-containing gases; and wherein the inhalation one way valve is configured to remain closed during multiple, successive chest decompressions so that respiratory gasses are prevented from reaching the lungs through the inhalation one way valve over successive chest compression/chest recoil cycles to successively decrease the volume of respiratory gasses in the lungs thereby allowing more blood to enter the thoracic space.