Marsh Bellofram has recently released its¡¯ electro-pneumatic analog circuit-card servo pressure transducer. Designed to provide compact, high-performance, and economical air pressure monitoring capabilities in a variety of OEM applications. Electro pneumatic converter and electro-pneumatic transducers have many different purposes. The present invention relates to an electro pneumatic converter comprising a displacement pump driven by at least one electric motor
Electro pneumatic converter is used, for example, in the biomedical field for the pneumatic control of a cardiac module, or artificial heart. An artificial heart is formed mainly of two ventricle, each comprising a flexible bag or blood bag whose deformation for aspirating or delivering the blood is controlled by the deformation of a gas bag, for example an air or nitrogen bag. Each of the two gas bags, corresponding to each of the two ventricles, is connected periodically through a distributor to the inlet and to the outlet of the pump of an electro pneumatic converter of the above type. Such electro pneumatic converter are already known, whose volume is however never less than 10 cubic decimeters or so, which makes it impossible to implant them in a patient. Serious disadvantages occur for the patient in whom a cardiac module has been implanted.
Two manifold block configurations are available, one with front ports to facilitate direct panel mounting or seamless insertion into a DIN-rail adapter tray; and the second with bottom ports, for use within multi-unit manifold system applications. An onboard electro pneumatic transducer within the manifold block permits ¡À0.5% full-scale accuracy
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