SPINAL CORD STIMULATOR SYSTEM

摘要

A wireless charger system for inductively charging a rechargeable battery of an implantable pulse generator (IPG) implanted in a human body is provided. A charging coil in the charger is wirelessly coupled to a receiving coil of the IPG to charge the rechargeable battery. An end-of-charge (EOC) circuit continuously monitors the reflected impedance from a reflected impedance sensor and determines the end of charge when a predetermined pattern of the reflected impedance corresponding to an EOC signal from the IPG is received. Advantageously, receiving the EOC signal through the charging coil eliminates the need to provide a separate communication circuit in the IPG that communicates with the charger.

主权项

1. A wireless charger system for inductively charging a rechargeable battery of an implantable pulse generator (IPG) implanted in a human body, the wireless charger system comprising:
a charging coil adapted to be wirelessly coupled to a receiving coil of the IPG to charge the rechargeable battery; a reflected impedance sensor coupled to the charging coil to detect a reflected impedance of the charging coil; an end-of-charge (EOC) circuit coupled to the reflected impedance sensor, the EOC circuit adapted to continuously monitor the reflected impedance from the reflected impedance sensor and determine the end of charge when a predetermined pattern of the reflected impedance corresponding to an EOC signal from the IPG is received.