Patent ID: 9186520
Filing Date: 2015-11-17
Classification: A61N

Abstract:
1. A method for charging a battery in an implantable medical device using an external charger, comprising: (a) generating a first magnetic field from a first coil at the external charger to automatically determine that the implantable medical device is possibly proximate the external charger by comparing a parameter of the first coil to a threshold value; (b) upon determining that the external charger is possibly proximate the implantable medical device, automatically generating a second magnetic field from the first coil in the external charger; (c) receiving at the external charger and during the second magnetic field at least one indication from the implantable medical device; and (d) upon receiving the at least one indication, automatically generating a third magnetic field from the first coil in the external charger to wirelessly charge the battery in the implantable medical device.