The potential of radio frequency identification technology in the field of device tracking and in vivo transplantation has been increasingly concerned, but an article in the Journal of the American Medical Association recently pointed out that RFID may interfere with certain devices in hospitals and is "potentially dangerous." This report undoubtedly hit an "eight-level strong earthquake" between medical devices and RFID technology.
After exposing the potential dangers, the RFID industry has suffered a lot because they have always believed that hospitals and medicine are the most promising areas of high growth for RFID. But the high-tech vendors that sell the system claim that by switching to a system with a smaller transmit power, the problem can be eliminated.
On June 25th, the University of Amsterdam Academic Medical Center in the Netherlands released a non-clinical study using an active 125 kHz and a passive 868 MHz RFID system to assess its inclusions including venous pumps and defibrillators. Electromagnetic interference of 41 medical devices within. At the time of the study, each device was tested 3 times for a total of 123 tests, 22 of which constituted a “danger†for patient care. Two cases were classified as “significant†adverse effects on patient care, and 22 were considered “slight†effects, especially passive RFID signals proved to be “most problematicâ€. The average distance between the RFID reader and the medical device in the study was 30 cm.
The study concluded that hospitals and clinics that use RFID equipment in intensive care units are required to conduct electromagnetic interference field tests and maintain RFID system updates to comply with international standards.
Hospitals are increasingly using RFID in conjunction with wireless LANs to track the location of devices, patients, and workers, such as wristbands with RFID chips embedded. There are even some high-tech companies that can test RFID chips into critically ill patients, so that medical or emergency ambulance personnel can use RFID readers to view the medical history of comatose patients.
In a written response to the American Medical Association, the chief technical officer of Awarepoint, which provides RFID systems and wireless networks to hospitals, he pointed out that the power levels used by some RFID systems may be the primary cause of interference. Awarepoint uses wireless Mesh technology, so its system produces only 1/4000 of the power of standard active and passive RFID readers. "Although this is a non-clinical study, its conclusions have had a major impact on the development of RFID and [positioning systems] in the field of patient care." AwarepointCTO (Chief Technology Officer) Ron Hegli In a statement, "In the final analysis, vendors should consider integrating transmit power, electromagnetic interference and frequency into their basic technology."
At the same time, an ultra-wideband system provider, TimeDomain, also responded by stating that their company's UWB technology power level is 1/10,000 of the test instrument, which does not interfere with health care.
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