Wireless charging method with counterpoint automatic prompting function for implanted medical instrument

Abstract

The invention discloses a wireless charging method with a counterpoint automatic prompting function for an implanted medical instrument, belonging to the field of implanted medical instruments. The wireless charging method is characterized in that after a corresponding device is established, a voltage on a rectifier output capacitance in an in vivo power part is collected by using a first microprocessor in an in vitro charger to serve as feedback quantity, the voltage deviation value between two feedbacks and the rate of change of voltage deviation are calculated, a fuzzy control rule is utilized to determine the variation of in vitro transmitting power, and the variation of the in vitro transmitting power is overlapped on a set transmitting power value for compensating the variation of the voltage on the rectifier output capacitance owing to shifting, charging stage variation and the like. By using the method, the counterpoint situation of in vivo/vitro coils can be automatically prompted in the process of charging, the charging efficiency is improved, the stability is improved and the radiation is reduced. Under the conditions of different counterpoint positions or different charging stages, the in vitro transmitting power is automatically regulated, and the radiation of the in vivo implanted medical instrument is effectively controlled in a reasonable range.

Description

technical field [0001] The invention relates to a percutaneous wireless charging method for implantable medical instruments, belonging to the technical field of implantable medical instruments. Background technique [0002] Implantable medical devices are increasingly used clinically for a variety of functions such as: cardiac pacemakers for the treatment of conduction disorders and heart failure; for the treatment of ventricular and atrial tachyarrhythmias Cardiac defibrillators for arrhythmia and fibrillation; neurostimulators for treating essential tremors, such as those caused by Parkinson's disease; cochlear implants for hearing impairment, and more. [0003] Currently, implantable medical devices using high-energy-density batteries typically last 3-5 years in a patient. However, due to the application of a primary battery, the device has to be re-operated to replace the device after the battery energy is exhausted. This type of device has a relatively large disadvanta...

AI Technical Summary

Problems solved by technology

[0006] The relevant patents that use rechargeable batteries to supply energy for implantable medical instruments do not have the function of automatic alignment prompts, but only the efficiency prompts in different situations

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