A novel circulatory support device which is based on a pump that suctions and delivers blood into the circulation by using native energy from the respiratory system (Figure 1,2,3). The pump is consisted of two chambers: one chamber is connected to the circulation (2) and the other to the respiratory system (6). The pump's function depends on air pressure variations during the respiratory circle. The air pressure enhances the movement of the elastic membrane (1). As a result, the blood is suctioned via the inlet valve (4) and then is pumped to the circulation via the outlet valve (5), thus promoting circulatory support and hemodymanic stability. A novel circulatory support device working by using the native respiratory energy is developed. Technological evolution of this project may provide a new implantable, simplified and low-cost assist device which functions independently of external energy supply.
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