But he soon found that while a pump based on the Venturi effect is simple conceptually, getting it to work in the real world is a bit trickier. Especially when you’re dealing with something ...

Aspirator pumps use the Venturi effect to create a vacuum. These devices are cheap because there are no moving parts. We looked it up and the one he is using costs ten US dollars on fleabay.

The Venturi effect is described as a decrease in pressure when blood flows through a stenosis at a high velocity. This relates to the hemodynamics in hypertrophic obstructive cardiomyopathy (HOCM).