Patent ID: 7081683

Claim:
A method for powering an implanted medical device by generating electrical energy from a subject's body, comprising: physically contacting an external surface of a part of the subject's cardiovascular system with a pulsation transducer to sense pulsations therein and to convert said pulsations into electrical energy; and utilizing said electrical energy to power said implanted device; said pulsations of the part of the subject's cardiovascular system being converted into electrical energy by utilizing said pulsations to pump a liquid with respect to an electrical coil to generate an electrical voltage in said coil; said liquid being pumped in one direction through a closed-loop path enclosed by said electrical coil; said closed-loop path being at least partly defined by a displaceable member mechanically coupled to said pulsation transducer physically contacting said external surface of the part of the subject's cardiovascular system so as to be cyclically displaced by said pulsations of said part of the subject's cardiovascular system.