Patent ID: 7711434
Filing Date: 2010-05-04
Classification: A61N

Abstract:
1. A medical device comprising: an antenna having a first coil adapted for engaging a wall of a first blood vessel of an animal to receive a radio frequency signal, wherein the first coil has a first end and a second end, and includes a first winding wound helically in a rotational direction along a longitudinal axis from a first terminus at the first end to the second end, and a second winding connected to the a first winding in a U-shaped section at the second end and wound helically in the rotational direction along the longitudinal axis from the second end to a second terminus at the first end; a detector connected to the first coil for converting the radio frequency signal into a direct current; an electrical storage device connected to the detector for storing electrical energy; a plurality of electrodes adapted to contact with at least one blood vessel of the animal; a stimulation control circuit which determines when stimulation of tissue of the animal is needed; a pulse circuit which responds to the stimulation control circuit by applying voltage from the electrical storage device across the plurality of electrodes; and a power source adapted for placement outside the animal and having transmitter antenna and a transmitter that generates the radio frequency signal which is applied to the transmitter antenna.