Systems and methods for external control of power transmission to, and stimulation therapy by, an implanted neuromodulation device

A neuromodulation system comprising:

• a neuromodulation device configured to be implanted at an implant site;
• and
• an external device configured to be positioned at an external sensing site relative to the neuromodulation device,
• wherein:
• the external device is configured to transmit an RF signal to the neuromodulation device;
• the neuromodulation device is configured to deliver a neuromodulation therapy comprising a stimulation pulse at the implant site based on the RF signal;
• and
• the external device is configured to:
• obtain a measurement that results from delivery of the stimulation pulse, wherein the measurement is based on an electrical potential sensed between two electrodes in contact with tissue at the external sensing site, and
• initiate a change in the neuromodulation therapy based on the measurement, wherein the external device initiates a change in the neuromodulation therapy in response to the measurement being between a lower level and an upper level, by changing a configuration of the RF signal to increase the energy of a subsequent stimulation pulse.

A neuromodulation system comprising:

• a neuromodulation device configured to be implanted at an implant site;
• and
• an external device configured to be positioned at an external sensing site relative to the neuromodulation device,
• wherein:
• the external device is configured to transmit an RF signal to the neuromodulation device;
• the neuromodulation device is configured to deliver a neuromodulation therapy comprising a stimulation pulse at the implant site based on the RF signal;
• and
• the external device is configured to:
• obtain a measurement that results from delivery of the stimulation pulse, wherein the measurement is based on an electrical potential sensed between two electrodes in contact with tissue at the external sensing site, and
• initiate a change in the neuromodulation therapy based on the measurement, wherein the external device initiates a change in the neuromodulation therapy in response to the measurement being less than a lower level, by initiating a process to reposition the external device to a different external site.

A method comprising:

• transmitting an RF signal from an external device at an external sensing site to a neuromodulation device implanted at an implant site;
• delivering, by the neuromodulation device, a neuromodulation therapy comprising a stimulation pulse at the implant site based on the RF signal;
• obtaining, at the external device, a measurement that results from delivery of the stimulation pulse, wherein the measurement is based on an electrical potential sensed between two electrodes in contact with tissue at the external sensing site;
• and
• initiating, at the external device, a change in the neuromodulation therapy based on the measurement, wherein initiating a change in the neuromodulation therapy comprises, in response to the measurement being above an upper level by a threshold amount, changing a configuration of the RF signal to decrease the energy of a subsequent stimulation pulse.

A method comprising:

• transmitting an RF signal from an external device at an external sensing site to a neuromodulation device implanted at an implant site;
• delivering, by the neuromodulation device, a neuromodulation therapy comprising a stimulation pulse at the implant site based on the RF signal;
• obtaining, at the external device, a measurement that results from delivery of the stimulation pulse, wherein the measurement is based on an electrical potential sensed between two electrodes in contact with tissue at the external sensing site;
• and
• initiating, at the external device, a change in the neuromodulation therapy based on the measurement, wherein initiating a change in the neuromodulation therapy comprises, in response to the measurement being between a lower level and an upper level, changing a configuration of the RF signal to increase the energy of a subsequent stimulation pulse.

A method comprising:

• transmitting an RF signal from an external device at an external sensing site to a neuromodulation device implanted at an implant site;
• delivering, by the neuromodulation device, a neuromodulation therapy comprising a stimulation pulse at the implant site based on the RF signal;
• obtaining, at the external device, a measurement that results from delivery of the stimulation pulse, wherein the measurement is based on an electrical potential sensed between two electrodes in contact with tissue at the external sensing site;
• and
• initiating, at the external device, a change in the neuromodulation therapy based on the measurement, wherein initiating a change in the neuromodulation therapy comprises, in response to the measurement being less than a lower level, initiating a process to reposition the external device to a different external site.