RFID Tags Can Interfere With Medical Devices

An anonymous reader writes "A new study suggests RFID systems can cause 'potentially hazardous incidents in medical devices.' (Here is the JAMA study's abstract.) Among other things, electrical interference changed breathing machines' ventilation rates and caused syringe pumps to stop. Some hospitals have already begun using RFID tags to track a wide variety of medical devices, but the new finding suggests the systems may have unintended consequences."

Comments

Need in health care for asset tracking

[steeljaw]

Interestingly enough, I've been approached 3 times now by people in the health care industry who have expressed a need for some time of asset tracking software and I've always given them my brother's card (his company specializes in RFID based asset tracking). Actually, one person specifically asked me if I was capable of integrating an RFID solution into their environment. I wonder how many companies are currently developing RFID based software geared towards the health care industry only to receive a backlash from the medical community when this type of information becomes common knowledge..

Re:This is too much

[Gewalt]

My only question is, how much more insult to our intelligence can we take as a society before we start actively protesting?

Yea, um. Ok, I'll start protesting against the insult to my intelligence that is your posts. I mean, since you requested action, I feel compelled to deliver.

More Slashdot pseudo-science

[Futurepower(R)]

Thanks for adding some sensible information to the discussion. Slashdot editors seem not to be able to know the difference between science and foolish imaginings.

Here is a quote, a comment to the Wall Street Journal story:

"interference changed breathing machines' ventilation rates and caused syringe pumps to stop."
These things are FCC regulated. Should I feel safe knowing that not only are some of the systems in a hospital sensitive to EMF below FCC limits, but also that several life-critical devices FAIL under such radiation levels? For example, WHY should a syringe pump be designed so fragile that some radio waves can cause it to utterly stop?
Comment by RH - June 24, 2008 at 5:00 pm

Exactly. That's what I would have said. Here's another comment (my emphasis):

The usual ignorant hysteria. First of all, the test was of the reader, not the tags. "The median distance between the RFID reader and the medical device in all EMI incidents was 30 cm (range, 0.1-600 cm)." Second, and not available in the abstract is the AE classification. OBTW, Berwick is a shill for the trial lawyers, not a serious person.
Comment by jon - June 24, 2008 at 6:06 pm

Well???

[Creepy Crawler]

Why are these medical devices having problems like that? I thought medical devices were SUPPOSED to be hardened against bad things and fail over nicely.

I guess not.

Re:Interference in medicine

[bill_mcgonigle]

I can corroborate your basic point, and the sad part is that my data is 10 years old. Back then wireless ethernet (2Mbps pre-b stuff, even) was new and we were testing for interference. The very same kinds of machines had trouble as in TFS, and it was at sub-foot ranges.

I suspect either this study tested old gear (I'm assuming our hospital used a popular vendor) or the same vendors are playing lazy. Back then, the biomedical engineering guys explained to me that the FCC granted exceptions to medical device manufacturers for emitted interference, and that an emitter is a receiver, but that most good medical products companies didn't need to bother with these exceptions, they did a fine job on principle.

Re:Pros and cons

[Anonymous Coward]

An RFID tags ar a low power Micro watt power level transmitter. in facts its a transponder

EMC Electromagnetic incompatibly is a function of the tag and the medical device in its RF field while in operation.
The RFID tags reader is much more powerful, it needs to transmit enough RF to power the tage transponder . Medical devices are robust and designed to have immunity to Commonly used radio frequencies, but low Power devices like these tags pose a potential danger as many med devices d are not tested for operation in the presence of tiny RF power level and Rf fields generated by these tags and readers,
It is incorrect to assume that low transmitter power such as an RFID tag means no danger because that ignores the proximity of the tags transmitter to some medical sensors which may be only millimeters of distance away , making the situation the same as a receiver next to a transmitter 10 feet from a megawatt RF power source (transmitter )

What we need to do is d more testing of these medical devices EMC ( electromagnetic compatibly on the specific frequencies commonly used by BOTH the tags and the tags reader which is also a transmitter .

Re:This is too much

[FooAtWFU]

Actually, my company occasionally works with active, battery-powered RFID tag technology. They chirp location beacons by themselves. I understand most of the applications are currently more "warehouse" than "hospital", though.

Re:This is too much

[GoodNicksAreTaken]

Who/what are you quoting? RFID is good at identifying things you have, not finding things you've lost. Distances like 30 cm aren't much help "in a 10,000-room hospital". You know, like how a barcode can't tell you where your package is if it is 1,000 miles away. Distances like 5cm aren't much help on a planet this size.

Re:More than just the devices...

[IHC Navistar]

It also makes it much more easier for "Highway Pirates" to target specific types of merchandise. Here in Claifornia, many truck drivers are targets of well-planned hijackings where criminals steal whatever the trucker is hauling for sale on the black market. A good RFID reader would allow gangs to easily discriminate profitable targets from unprofitable targets (i.e. iPhones and plasma TVs from spinach and brussels sprouts.).

Personally, I don't like the idea of tracking every single thing, including people, with RFID tags. Yes, they may be useful in tracking inventory, but far greater security needs to be used.

Whats especially troubling is the plan to line "International Corridors" in the U.S. with Chinese-monitored RFID readers.