Induction activation of adjustable annuloplasty rings and other implantable devices

A system to adjust an adjustable medical device, the system comprising:

• an adjustable medical device assembly that is implantable subcutaneously within a body of a patient, the adjustable medical device assembly comprising:
• an adjustable medical device;
• an adjustment mechanism coupled to the adjustable medical device and configured to, when powered, effect an adjustment to the adjustable medical device;
• and
• a receiving coil electrically coupled to the adjustment mechanism and configured to resonate at a desired frequency such that an electric current induced in the receiving coil provides power to the adjustment mechanism;
• and
• an induction activation system configured to utilize magnetic resonance to wirelessly activate the adjustable medical device assembly, from outside the patient's body, through a skin barrier of the patient, the induction activation system comprising:
• a power source configured to create an alternating electrical signal of suitable power to resonate a coil;
• and
• a delivery coil electrically coupled to the power source and configured to resonate in response to the alternating electrical signal created by the power source and thereby generate a resonating magnetic field, wherein the delivery coil is tuned to have a resonant frequency that is the same as a frequency of the alternating electrical signal created by the power source,
• wherein the receiving coil of the adjustable medical device assembly is tuned to resonate at the resonant frequency of the delivery coil, and wherein positioning the delivery coil outside of the body of the patient and within proximity to the receiving coil positioned internal to the body of the patient, such that the receiving coil is within the magnetic field generated by the delivery coil, induces an electric current in the receiving coil that drives the adjustment mechanism to effect an adjustment of the adjustable medical device.