Instrumented retrievable implantable device, including an expandable section, for placement inside a body lumen, preferably in a blood vessel. The device includes a joined sensor for monitoring one or more physiological parameter for diagnostic or therapeutic purposes. Data access is assured by a passive RF transponder, in communication with an external readout unit or an implanted device, providing as well to the energy supply of the sensor. The shape of the device allows repositioning and retrieval by micro-invasive methods, by means of a link section coupleable with a grabbing device mounted on a catheter.
