Patent ID: 9166441
Filing Date: 2015-10-20
Classification: A61N,H02J,H03C,H04B

Abstract:
1. A portable charger device for transcutaneous charging of an implantable neurostimulator in a patient, the charger device comprising: a housing having an external surface that is configured to at least partially engage a skin surface of the patient and be positioned at least partially over the implantable neurostimulator; a charging coil disposed within the housing, wherein the charging coil is configured to generate a magnetic field having a frequency and to magnetically couple with the implantable neurostimulator to recharge the implantable neurostimulator; a class E driver disposed within the housing and electrically coupled to the charging coil, wherein the class E driver comprises: a processor disposed within the housing and electrically coupled to the class E driver, wherein the processor is configured to receive data indicative of the current passing through the charging coil and control the switching circuit via the application of the first voltage to the switching circuit in response to the received data, wherein the processor is configured to selectively operate the charger in either a data non-transmitting state or in a data transmitting state, wherein a carrier signal has the first frequency when the charger operates in the data non-transmitting state, and wherein the processor controls the FSK module to modulate the carrier signal between the second frequency and the third frequency when the charger operates in the data transmitting state.