Method of minimizing interruptions to implantable medical device recharging

摘要

A system and method of controlling the charging of the battery of a medical device using a remote inductive charger, with the method utilizing both a relatively fast closed-loop charging control based on a proxy for a target power transmission value in conjunction, and a slower closed-loop control based on an actual measured transmission value to control a charging power level for charging the medical device.

主权项

1. A method for charging a rechargeable battery in a medical device using an external charger, said method comprising the steps of:
wirelessly transmitting a power signal from the external charger to the medical device, said power signal including power for charging the rechargeable battery; in the medical device, measuring a value of a first variable relating to the power signal received by the medical device from the external charger; transmitting the value of the first variable from the medical device to the external charger concurrent with wirelessly receiving the power signal; in the external charger, measuring a value of a second variable relating to the power signal transmitted by the external charger to the medical device; and adjusting the power signal transmitted from the external charger to the medical device at least partly based on values of both said first variable and said second variable.