DEVICE FOR INDUCTIVE ENERGY TRANSFER TO IMPLANTABLE MEDICAL DEVICES Russian patent published in 2022 - IPC A61N1/378 A61N1/40 H02J50/10 

FIELD: medical technology.

SUBSTANCE: invention relates to medical technology and can be used for power supply of implantable medical devices, such as pacemakers, implantable cardioverter defibrillators, spinal cord neurostimulators, deep brain stimulation devices, implantable infusion pumps, motorized telescopic distraction rods (intelligent orthopedic implant), cochlear implants, implantable medical sensors, visual prostheses (retinal prostheses), auxiliary blood circulation devices. The device for inductive energy transfer to implantable medical devices includes a transmitting module with a transmitting inductor, a receiving module with a receiving inductor, a module for determining the relative position of the receiving and transmitting modules, a tuning module. The transmitting inductor generates an alternating magnetic field. The module for determining the relative position of the receiving and transmitting modules is equipped with means of sound and/or visual signaling and/or means of data exchange with external information display devices. The tuning module is connected to the power supply module and contains 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, including an alternating capacitor connected in parallel to the transmitting inductor. A capacitor as part of an alternating current generation circuit based on the design of a Class E amplifier connected in series to a transmitting inductor has a fixed capacitance.

EFFECT: increased reliability and simplification of the design of the percutaneous power transmission system using inductive coupling is achieved by using one capacitor with a fixed nominal value and one capacitor with a variable nominal value, rather than two capacitors with a variable nominal value, with the possibility of compensating for the influence of axial displacements by changing the capacitance of one shunt capacitor, reducing noise and reducing losses in the alternating current generation circuit, which leads to an increase in the efficiency of energy transmission.

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