Other

Max S De Vriend

Noam White

David J Cook

Allan S Garfield

A cardiopulmonary resuscitating pump, comprising, a housing having a top wall (20), a bottom wall (21) and a side wall (22) in the form of a bellows which is capable of contracting and expanding under the application and release of an externally applied pressure to contract and expand the volume of a gas chamber (23) within the housing and having a gas inlet (48) through the bottom wall for drawing gas into the gas chamber and a gas outlet (43) through the bottom wall for discharging gas from the gas chamber to an associated oropharyngeal airway, whereby, in use a patient can be subjected to ventilation and external cardiac massage by appropriate operation of the pump whilst situated on the patient's chest. A waste chamber (29) is also provided attached to the bottom wall and communicating, via a waste inlet (52) through the bottom wall, with the associated oropharyngeal airway whereby to suck secretions from the patient whilst cardiac massage and ventilation is occurring and to expel secretions through a waste outlet (47) through the bottom wall. Biasing springs ( 24 and 33) are provided in both the gas and waste chamber to assist in expanding the volume of the chambers upon release of the externally applied pressure, and all inlets and outlets contain check valves (42, 46, 49 and 53) to prevent reverse flow therethrough.

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Caulfield, Australia

Max S De Vriend