Patent ID: 6058330
Filing Date: 2000-05-02
Classification: A61F,A61N

Abstract:
A transcutaneous energy transfer device comprising:a) a plurality of first coils, each first coil for performing at least one of transmitting power and receiving power;b) a first circuit, coupled to each coil from the plurality of first coils for performing one of providing power to each coil of the plurality of first coils, the power provided for transmission therefrom, and receiving power from each coil of the plurality of first coils;c) a plurality of second coils, each second coil for performing one of transmitting power to and receiving power from a coil of the plurality of first coils;d) a second circuit, coupled to each coil of the plurality of second coils for performing one of providing power to each coil of the plurality of second coils, the power provided for transmission therefrom, and receiving and combining power from each coil of the plurality of second coils; and,e) a control system for maintaining provision of a sufficient amount of power to the second circuit, wherein a portion of the power is received at each of the plurality of second coils, the portions received at each of the second coils forming approximately the sufficient amount of power when combined, and wherein the power provided to some of the first coils for transmission is varied in order to transmit the sufficient amount of power to the plurality of second coils such that damage to a medium between the plurality of first coils and the plurality of second coils due to induced electromagnetic fields is controlled within predetermined limits.