Patent ID: 9044616
Filing Date: 2015-06-02
Classification: A61N,H01Q

Abstract:
1. An external device for charging a battery in an implantable medical device, comprising: at least one first antenna selectively enabled to generate an electric field for charging the battery in the implantable medical device; at least one second antenna selectively enabled to generate a magnetic field for charging the battery in the implantable medical device; and control circuitry within the external device, wherein the control circuitry is configured to enable the second antenna to produce the magnetic field and to receive data from the implantable medical device indicating that the implantable medical device is using the magnetic field to charge the battery, wherein if the data is received, the control circuitry is configured to continue enabling the second antenna to produce the magnetic field, and wherein if the data is not received, the control circuitry is configured to disable the second antenna and enable the first antenna to produce the electric field.