Medical Device Radiocommunications Service

The Medical Device Radiocommunications Service (MedRadio) is a specification and communication spectrum created for and set aside by the U.S. Federal Communications Commission (FCC) for the communication needs of diagnostic and therapeutic medical implants and body-worn medical devices. Devices operating on MedRadio include cardiac pacemakers, defibrillators, neuromuscular stimulators, and drug delivery systems. As of February 2016^[update], communications spectrum for these and other similar devices is set aside at various points in the 400 MHz frequency band, as well as the 2360-2400 MHz band, though specifically for medical body area network (MBAN) devices. The specification supersedes and incorporates a previous specification called the Medical Implant Communication Service (MICS).

The specification and nearly identical spectrum have also been created by the European Telecommunications Standards Institute (ETSI), with the specification largely referred to as MICS/MEDS (Medical Data Service) in Europe and other parts of the world.

The FCC created the Medical Implant Communication Service (MICS) in 1999 "in response to a petition for rule making by [Medtronic, Inc.] to permit use of a mobile radio device, implanted in a patient, for transmitting data in support of the diagnostic and/or therapeutic functions associated with an implanted medical device." This set aside the 402–405 MHz band and designated a low maximum transmit power, EIRP=25 microwatt, in order to reduce the risk of interfering with other users of the same band. Ten channels of 300 kHz each were assigned to the bandwidth. MICS provided additional flexibility to medical device developers compared to previously used inductive technologies, which required the external transceiver to touch the skin of the patient. MICS was later adopted by the ETSI in 2002.

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