ENERGY TRANSFER AMPLIFIER FOR INTRABODY DEVICES, WITH IMPROVED TRANSFER OF ENERGY TO RADIO POSITION SENSING SYSTEM INSERTED IN HUMAN BODY

摘要

PURPOSE: An energy transfer amplifier is provided to improve transfer of energy to a radio position sensing system inserted in a human body. CONSTITUTION: An apparatus for supplying current to a power circuit of a medical device inserted in a human body, comprises a power transmitter and a passive energy transfer amplifier(40). The power transmitter is adapted to generate an electromagnetic field having a predetermined frequency for inductively supplying current in the power circuit, from a part of a human body. The passive energy transfer amplifier is disposed around the medical device so as to increase the current driven in the power circuit by the electromagnetic field. The passive energy transfer amplifier has a resonant frequency at the frequency of the electromagnetic field.