biology

Medical Device Radiocommunications Service

Medical Device Radiocommunications Service is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Medical Device Radiocommunications Service rather than just read about it. In short: 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.

Key takeaways

Medical Device Radiocommunications Service belongs to biology; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Medical Device Radiocommunications Service to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Medical Device Radiocommunications Service from memory before moving on to harder problems.

Reference excerpt

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, 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.

History 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. In 2006, the FCC reevaluated the spectrum requirements at the prompting of Medtronic, which sought to expand the spectrum "to support advances in medical sensor technology and the expected proliferation of such devices, especially those used for lower-cost medical monitoring and non-emergency reporting applications." A similar process was initiated by the ETSI in Europe in July 2004, with both the FCC and ETSI considering the 401–402 and 405–406 MHz ranges. The ETSI formalized the proposal into a standard called MEDS (with the core MICS bands remaining under that name and the new "wing" bands being referred to as MEDS) in December 2007, while the FCC added the same additional spectrum to MICS and dubbed the expanded plan the Medical Device Radiocommunications Service or MedRadio in May 2009. The FCC expanded MedRadio's spectrum again in November 2011, adding 24 megahertz in the 413-419 MHz, 426-432 MHz, 438-444 MHz, and 451-457 MHz ranges as part of an "effort to recognize and facilitate the significant advances in wireless medical technologies that are revolutionizing treatment for a wide variety of medical conditions." The FCC allocated additional spectrum (2360-2400 MHz) specifically for MBAN devices in May 2012, effective on October 10, citing "significant public interest benefits associated with the development and deployment" of MBAN devices. Additional modifications to the MBAN rules were released in August 2014, including the "narrowing [of] the definition of health care facilities that may use MBAN devices in the 2360-2390 MHz band" and relaxing MBAN network topology restrictions among others.

Operational parameters In the United States, the FCC states that:

MedRadio devices can only be operated by an authorized health care providers such as a physician or legally authorized entity able "to provide health care services using medical implant devices"; MedRadio device manufacturers and representatives can only operate the device "for the purpose of demonstrating, installing and maintaining the equipment" for authorized health care providers; and MedRadio devices are only "authorized on a secondary status" and must accept any interference created by devices of primary status. Operational parameters in other parts of the world may vary slightly based on local law. In Canada, for example, devices that fall under the MEDS standard also fall under secondary status, but they are classified nationally as Category I equipment that require a technical acceptance certificate (TAC) or equally recognized certificate before they can be used.

See also Wireless Medical Telemetry Service

References

Worked examples

Example 1 — a first encounter with Medical Device Radiocommunications Service

Start with the simplest possible case. Write down what Medical Device Radiocommunications Service claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Medical Device Radiocommunications Service before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Medical Device Radiocommunications Service ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Medical Device Radiocommunications Service

In research: Medical Device Radiocommunications Service appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Medical Device Radiocommunications Service in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Medical Device Radiocommunications Service is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bandplans, Implants (medicine), Radio regulations, so understanding it makes those chapters shorter.
In everyday life: Look for Medical Device Radiocommunications Service outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Medical Device Radiocommunications Service in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Medical Device Radiocommunications Service means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Medical Device Radiocommunications Service out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Medical Device Radiocommunications Service in simple terms?

Why does Medical Device Radiocommunications Service matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Medical Device Radiocommunications Service?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Medical Device Radiocommunications Service.