RFID system improves the level of medical care

　　Radio frequency identification technology has wide applications in many industries. However, when it comes to the medical field, size has become a key design problem. The narrow end of the RFID tag is as large as a grain of rice, but this is not enough. Cell-level applications (such as research and diagnosis) need to further reduce the design size.

　　A group of researchers from Stanford University has developed a miniature RFID tag that can be implanted into cells (such as skin or cancer cells). The label is about one-fifth the thickness of a human hair. It is used in conjunction with a special radio frequency identification reader to interpret data and monitor cell activities in real time. In the future, micro RFID tags can also connect sensors to each other to promote the development of advanced biotherapeutic technologies, such as antibody detection and cancer cell destruction.

　　The surgeon implants the RFID microchip in the doctor's hand. Soon, these tags can be implanted into single cells. Image courtesy of Paul Hughes. Licensed by CC BY-SA 4.0, shared via Wikimedia Commons.

　　No matter how thorough the doctor's clinical care is, it may be difficult for patients to enjoy being pricked to detect their vital signs. At Cornell University in the United States, researchers designed ultrahigh frequency (UHF) RFID tags, which can not only monitor vital signs such as heart rate, respiration, and blood pressure, but do not even need to contact the patient at all. The label can be put into a medical wristband or sewn into clothes. The RFID reader/writer communicates with the tag wirelessly and can monitor multiple patients at the same time. The system relies on back-end software to manage, interpret and monitor data. As a result, doctors can accurately understand the characteristics of each patient's vital system, medical staff can save time and energy when measuring vital signs, and patients become more comfortable.

　　"Smart fabric" is a potential application area of the RFID system. Image courtesy of Joshua Dickens. It has been licensed by CC BY-SA 2.0 and shared via Wikimedia Commons.

　　For example, sleep disorders and sleep apnea are often not effectively treated. Although they may cause a wide range of health and safety issues, few patients are accustomed to receiving night sleep tests. After all, sleep monitoring is not only very expensive, but also easily disrupt the patient's schedule, and tests that can be performed at home are difficult to operate. (I myself often perform sleep tests at home, every time I have to tie the system to my chest, stick the breathing tube on my face, and try my best to keep the monitor on my finger from falling off, the experience is extremely uncomfortable and inconvenient).

　　In order to provide support, researchers from the Italian company RADIO6ENSE, the University of Palermo and the University of Rome have developed a passive RFID system that can track sleep patterns remotely and in real time. This user-friendly passive RFID system has an RFID tag sewn into the pajamas. It can operate at low power levels and does not require batteries at all. So this sleep mode data collector is not only accurate, but also a safe Wearable devices.

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