Closed loop wireless energy supply system for implantable medical electronic device

Abstract

The invention discloses a closed loop wireless energy supply system for an implantable medical electronic device. An in-vitro energy transmission driving circuit converts external DC power into high frequency AC electrical energy, and transmits the high frequency alternating electrical energy to an in-vivo receiving coil tuned on the same frequency in an electromagnetic coupling way by a transmission coil. A rectification voltage stabilizing circuit converts the AC electrical energy obtained from the receiving coil into DC electrical energy, and provides the DC electrical energy for a charging management circuit to charge an in-vivo rechargeable lithium ion battery. An in-vivo charging state monitoring circuit periodically monitors the charging state of the lithium ion battery. The charging state is processed by an in-vivo processor, and the processed charging state is fed back to an in-vitro processor by a radio frequency transceiver circuit, and is displayed on a liquid crystal display (LCD) module. Simultaneously, the in-vitro processor controls the external DC power according to the charging state. Therefore, the closed loop wireless energy supply system can monitor the charging state of the implantable medical device and realize timely feedback and control.

Description

technical field [0001] The present invention relates to electronic information technology and biomedical technology, in particular to a closed-loop wireless energy supply system for implantable medical electronic devices, which is a closed-loop transdermal energy supply system capable of simultaneous wireless energy transmission and monitoring and feedback control of power supply status. Wireless energy supply system. Background technique [0002] With the development of microelectronic information technology and biomedical technology, various implantable medical electronic devices have been widely used in the field of clinical in vivo diagnosis and treatment, and are playing an increasingly important role in the diagnosis and treatment of various diseases. One of the common technical problems of implanting medical electronic devices is how to effectively provide enough energy to implanted electronic devices to maintain their long-term, stable and reliable operation and real...

AI Technical Summary

Problems solved by technology

The disadvantage of this type of energy supply method is that before the energy of the battery is about to run out, a new battery must be re-implanted through surgery. shadow

[0006] At present, most of the implanted medical electronic devices used clinically belong to the open-loop system, that is, they either act on the human body unidirectionally through the implanted system, or extract biological signals from the human body unidirectionally for processing, and cannot telemetry results for feedback control

The Chinese patent "Controllable High-Efficiency Wireless Energy Supply Device for Biological Implants" (application number: 200810036568.3) proposes a high-efficiency wireless energy supply device based on single-chip microcomputer control frequency, which can realize the adjustable frequency of the external transmission module, However, it only adjusts the system frequency in one direction, not only fails to adjust the resonant frequency of the coil in the body, but also fails to obtain the power supply status of the implanted device

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