External charger for an implantable medical device for determining position using phase angle or a plurality of parameters as determined from at least one sense coil
Aghassian, Daniel,Stouffer, Thomas W.,Larcom, Jonathan,Gupta, Gaurav
申请号：
AU2017286414
公开号：
AU2017286414A1
申请日:
2017.06.09
申请国别(地区):
AU
年份:
2018
代理人:
摘要：
A charging system for an Implantable Medical Device (IMD) is disclosed having a charging coil and one or more sense coils preferably housed in a charging coil assembly coupled to an electronics module by a cable. The charging coil is preferably a wire winding, while the sense coils are preferably formed in one or more traces of a circuit board. One or more voltages induced on the one or more sense coils can be used to determine a phase angle between the voltage and a driving signal for the charging coil. The determined phase angle can then be used to determine the position of the charging coil relative to the IMD. Additionally, more than one parameter (phase angle, magnitude, resonant frequency) may be determined using the voltage may be used to determine position, including the radial offset and depth of the charging coil relative to the IMD.
