An energy harvesting device is provided that may include any of a number of features. One feature of the energy harvesting device is that it is adapted for insertion into a human blood vessel for converting pulsatile pressure in the blood vessel into electrical energy. The energy harvesting device can provide electrical energy to another electronic or electromechanical on or in the human body. The energy harvesting device can include an electrostatic generator. Methods associated with use of the energy harvesting device are also covered.
