The basis behind electric energy is the movement of electrons or ions through a wire or medium. That is simple. I know that blood vessels carry ions such as K+, Cl-, and Na+ through them in varying concentrations. What I want to know is if it would be viable to create a biological solenoid by using a scaffold or some other means to coil a blood vessel. Here are a few questions I have thought of. -would there be sufficient current created by ionic species traveling through a blood vessel? -what size, number of coils, and interluminal blood velocity might be needed? -would internal sheer stresses created by the coiling be too much? I understand that this is a pretty complicated and hypothetical question and I don't really expect an "answer". I am mainly here for brainstorming purposes. Thanks for your help.