초록 ▼

In the design of transcutaneous energy transfer devices variation in spacing between the coils results in energy transfer efficiency changes. These changes may have other causes. It is proposed to use an autotuning circuit and a voltage control circuit in cooperation with feedback from the internal

In the design of transcutaneous energy transfer devices variation in spacing between the coils results in energy transfer efficiency changes. These changes may have other causes. It is proposed to use an autotuning circuit and a voltage control circuit in cooperation with feedback from the internal coil in order to better maintain energy transfer levels as desirable. The feedback is typically provided via IR communication; however, when skin is highly pigmented, IR communication is inefficient. A method and system for using RF signals to accomplish the communication is disclosed.

대표청구항 ▼

[ What is claimed is:] [1.] In a TET device having a primary coil and a primary coil driver for operation outside a living organism, and a secondary coil for implanting within the living organism the two coils for being coupled by a magnetic field, a system for tuning the TET device comprising:a) me

[ What is claimed is:] [1.] In a TET device having a primary coil and a primary coil driver for operation outside a living organism, and a secondary coil for implanting within the living organism the two coils for being coupled by a magnetic field, a system for tuning the TET device comprising:a) means for measuring at least a characteristic of the secondary coil during operation and for transmitting an indication of the characteristic from within the organism to outside the organism;b) means for receiving the transmitted indication of the characteristic and for providing a signal related to said indication; and,c) a control circuit for receiving the signal related to said indication and for controlling a characteristic of the magnetic field in order to effect a change in the saturation point of the magnetic field.