MAGNETIC FIELD DETECTORS, IMPLANTABLE MEDICAL DEVICES, AND RELATED METHODS THAT UTILIZE A SUSPENDED PROOF MASS AND MAGNETICALLY SENSITIVE MATERIAL
    3.
    发明申请
    MAGNETIC FIELD DETECTORS, IMPLANTABLE MEDICAL DEVICES, AND RELATED METHODS THAT UTILIZE A SUSPENDED PROOF MASS AND MAGNETICALLY SENSITIVE MATERIAL 有权
    磁场检测器,可植入医疗器械以及利用悬浮质量和磁敏感材料的相关方法

    公开(公告)号:US20160023002A1

    公开(公告)日:2016-01-28

    申请号:US14340893

    申请日:2014-07-25

    Abstract: Magnetic field detectors include a proof mass suspended by deformable arms similar to a three dimensional accelerometer. The magnetic field detectors further include magnetically sensitive material present on the proof mass and/or deformable arms to cause movement of the proof mass and/or deformable arms when in the presence of a magnetic field. This movement is converted to an electrical signal and that electrical signal is compared to a reference to determine if a magnetic field of interest is present. The magnetic field detector may be included within an implantable medical device, and when the magnetic field detector indicates that a magnetic field of an MRI scanner is present, the implantable medical device may switch to an MRI mode of operation. The device may also switch back to a normal mode of operation once the MRI scanner is no longer detected such as after a predefined amount of time.

    Abstract translation: 磁场检测器包括由类似于三维加速度计的可变形臂悬挂的检验质量块。 磁场检测器还包括存在于检测质量块和/或可变形臂上的磁敏材料,以在存在磁场时使检测质量块和/或可变形臂移动。 该运动被转换为电信号,并将电信号与参考值进行比较,以确定感兴趣的磁场是否存在。 磁场检测器可以包括在可植入医疗装置内,并且当磁场检测器指示存在MRI扫描器的磁场时,可植入医疗装置可切换到MRI操作模式。 一旦MRI扫描仪不再被检测到,例如在预定义的时间量之后,该装置也可以切换回正常操作模式。

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