MOVABLE MAGNET TRANSMITTER FOR INDUCING ELECTRICAL CURRENT IN AN IMPLANTED COIL

摘要

An external power head (20) is energized by a motor (22) causing movement of an element (26) that produces a varying magnetic field, thereby inducing power in an implanted receiver coil (30) within a patient's body. The external power head (20) includes either one or more moving permanent magnets (42), or one or more moving elements that vary the magnetic flux coupled to the implanted receiver coil (30). As a result of the varying magnetic field experienced by the implanted receiver coil (30), an electric current flows from the implanted receiver coil (30) to energize an implanted medical device (34).