In some examples, an implantable infusion device (100) using a piezoelectric and/or electrostrictive mechanical pumping catheter (10) includes a reservoir (109) configured to retain for a fluid to be dispensed within a patient, at least one piezoelectric and/or electrostrictive mechanical pumping catheter for dispensing the fluid contained within the reservoir, a transceiver, and a processor (103) to regulate control the operation of the piezoelectric and/or electrostrictive mechanical pumping catheter.
