Engagement tool for implantable medical devices

A medical system, comprising:

• a medical device configured to be implanted within a patient, the medical device including capsule having an exterior surface and electronic componentry sealed within the capsule;
• and
• an engagement tool configured to couple to the medical device post implantation, such that the engagement tool can be used to adjust the position of the medical device when coupled to the medical device and wherein the electronic componentry includes electrical circuitry configured to generate stimulation pulses or drug delivery doses in accordance with a plurality of stimulation parameters.