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Related Concept Videos

Magnetism01:30

Magnetism

10.2K
Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
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Miniaturizing RFID for magnamosis.

Hao Jiang, Shijie Chen, Shad Kish

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |January 9, 2015
    PubMed
    Summary

    A novel miniaturized Radio Frequency IDentification (RFID) tag enables wireless monitoring for magnamosis, a less invasive surgical alternative. This technology ensures precise magnet alignment, improving outcomes for various patient groups.

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    Area of Science:

    • Biomedical Engineering
    • Surgical Technology
    • Implantable Devices

    Background:

    • Anastomosis is a common surgical procedure often requiring staples or sutures.
    • Magnamosis offers a less invasive alternative by applying mechanical pressure using permanent magnets.
    • Accurate alignment of magnets is crucial for successful magnamosis procedures.

    Purpose of the Study:

    • To develop a miniaturized, batteryless Radio Frequency IDentification (RFID) tag for monitoring magnamosis.
    • To ensure precise alignment of magnets during the magnamosis procedure.
    • To create an RFID tag suitable for both pediatric and adult patients.

    Main Methods:

    • Designed a multi-layer circular spiral coil for miniaturized RFID tags (10-27 mm diameters).
    • Integrated a pressure-sensitive mechanical switch for status telemetry.
    • Utilized an impedance matching network to enhance operating distance and performance.

    Main Results:

    • Achieved operating distances greater than 10 cm for RFID tags in a 20 × 22 cm(2) area.
    • Demonstrated robust performance with tags up to 45° off the antenna's normal direction.
    • Confirmed no significant performance degradation when immersed in saline or near rare-earth magnets.

    Conclusions:

    • The developed miniaturized RFID tag effectively supports magnamosis procedures.
    • The tag's design is adaptable for various patient sizes (pediatric and adult).
    • This technology has potential applications in other medical fields requiring miniaturized RFID tags.