Stimulation apparatus

A medical apparatus for delivering stimulation energy to a patient, comprising:

• an external device comprising an external antenna, an external transmitter configured to drive the external antenna, an external power supply configured to provide power to the external transmitter, and an external controller configured to control the external transmitter;
• an implantable device comprising an implantable antenna configured to receive a first transmission signal from the external device, an implantable receiver configured to receive the first transmission signal from the implantable antenna, an implantable controller, an implantable energy storage assembly, and at least one stimulation element configured to deliver stimulation energy to tissue;
• a user interface;
• and
• one or more controllers configured to:
• cause the external device to transmit the first transmission signal to the implantable device while the external device is positioned on skin of the patient proximate an implantation location of the implantable device;
• determine a positioning-quality indication associated with a position of the external device relative to the implantable device based on reception of the first transmission signal by the implantable device;
• cause the user interface to output feedback corresponding to the positioning-quality indication;
• and
• control the implantable device to deliver the stimulation energy through the at least one stimulation element responsive to the positioning-quality indication satisfying a positioning criterion.

A non-transitory computer-readable medium storing instructions that, when executed by one or more processors of a medical apparatus including an external device and an implantable device, cause the one or more processors to:

• control transmission of a first transmission signal from the external device to the implantable device while the external device is positioned on skin of a patient proximate an implantation location of the implantable device;
• determine a positioning-quality indication associated with a position of the external device relative to the implantable device based on reception of the first transmission signal by the implantable device;
• cause a user interface to output feedback corresponding to the positioning-quality indication;
• and
• cause the implantable device to deliver stimulation energy to tissue responsive to the positioning-quality indication satisfying a positioning criterion.