Patent ID: 11918819
Assignee: MEDTRONIC, INC.
Field: Medical technology (Instruments)
Classification: CPC A  H  Y | IPC A  H

Claim 13:
14. A system, comprising:
an implantable device comprising:
a plurality of electrodes;
a power source;
detection circuitry electrically coupled to the electrodes, the detection circuitry configured to detect voltage induced by an electromagnetic field at an interface between tissue of a patient and the electrodes of the implantable device;
communication circuitry configured for wireless communication according to a first communication protocol; and
processing circuitry electrically coupled to the detection circuitry, the power source, and the communication circuitry, wherein the processing circuitry is configured to:
broadcast, via the communication circuitry, a first set of advertisements at a first advertising rate according to the first communication protocol;
determine that the detection circuitry detected voltage induced by the electromagnetic field;
determine the detected voltage satisfies one or more criteria, the one or more criteria comprising the voltage including one or more predetermined frequencies, the voltage modulating between a plurality of predetermined frequencies at a predetermined rate, or the voltage modulating between a plurality of predetermined frequencies at least a predetermined number of times;
in response to determining the detected voltage satisfies the one or more criteria, broadcast, powered by the power source and via the communication circuitry, a second set of advertisements at a second advertising rate according to the first communication protocol, wherein the second advertising rate is greater than the first advertising rate; and

an external device comprising:
second communication circuitry configured for wireless communication according to the first communication protocol and a second communication protocol; and
second processing circuitry electrically coupled to the second communication circuitry, wherein the second processing circuitry is configured to:
transmit, via the second communication circuitry, a wakeup signal according to the second communication protocol, the wakeup signal configured to generate the electromagnetic field to induce the voltage at the interface between the tissue of a patient and the electrodes of the implantable device; and
receive, via the second communication circuitry and in response to transmitting the wakeup signal, the second set of advertisements at the second advertising rate according to the first communication protocol.