Modern artificial hearts are less cumbersome, but they are still rather unwieldy because they use compressed air to pump the blood and are powered by heavy batteries.

In places such as India, ingenious, if slightly dangerous, devices exist whereby a fan is used to blow air through a mesh of straw which has water trickling through it powered by a small pump.

The device is compressed air powered equipment, petrol, with pump fuel produced to make the role of high-pressure, high-pressure oiling carried out.