DEVICE FOR PERCUTANEOUS ENERGY TRANSFER USING INDUCTIVE COUPLING Russian patent published in 2021 - IPC A61N1/00 

FIELD: medical equipment.

SUBSTANCE: invention relates to medical technology and can be used for energy supply of implantable medical devices (IMD). The objective of the invention is to increase the stability of percutaneous energy transmission using inductive coupling when changing the relative position of the transmitting and receiving modules. This is achieved by the fact that the proposed device for percutaneous energy transmission using inductive coupling contains a tuning module connected to the power supply module, containing a computing unit with a microcontroller and an executive unit with an alternating current generation circuit based on the design of a class E power amplifier, and the alternating current generation circuit contains two voltage-controlled variable capacitors (varicaps) connected in series and in parallel to the transmitting inductor coil, or two arrays of series-connected switchable capacitors connected in series and in parallel to the transmitting inductor coil, or two arrays of parallel-connected switchable capacitors connected in series and in parallel to the transmitting inductor coil. Changing the capacitances in the load circuit of a class E power amplifier is carried out in such a way as to compensate for changes in the reflected impedance when changing the relative position of the receiving and transmitting inductors coils and thus, ensure that the power is maintained at the load as close as possible to the nominal value.

EFFECT: increase in the stability of percutaneous energy transmission using inductive coupling when changing the relative position of the transmitting and receiving modules.

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