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    • 3. 发明授权
    • Biomagnetometer with sealed vacuum enclosure and solid conduction cooling
    • 具有密封真空外壳和固体传导冷却的生物计量仪
    • US5494033A
    • 1996-02-27
    • US80876
    • 1993-06-21
    • D. Scott BuchananLaurence WardenScott W. RileyRichard T. JohnsonK. Randy BrimhallKeith A. Esser
    • D. Scott BuchananLaurence WardenScott W. RileyRichard T. JohnsonK. Randy BrimhallKeith A. Esser
    • A61B5/04G01R33/035A61B5/05
    • A61B5/04005G01R33/0358A61B5/0046
    • A biomagnetometer includes a magnetic field sensor including a magnetic field pickup coil and a detector of small electrical currents flowing within the pickup coil. A vacuum-tight enclosure surrounds the sensor. The enclosure has a concavely upwardly curved first wall, with the magnetic field pickup coil located adjacent to the first wall. A vented reservoir of liquefied gas is located within the enclosure, and a solid thermal conductor extends from the sensor. There is a vacuum-tight thermal feedthrough by which the solid thermal conductor passes between the interior and the exterior of the enclosure. Electronic circuitry for filtering and amplifying the signals of the detector is also provided. Such a biomagnetometer is placed below the body of a reclining subject, and a second portion of the biomagnetometer can be placed above the body. In one form, the enclosures are shaped to form a cavity that receives the head of the subject therein, to achieve full head coverage of the pickup coils in the biomagnetometer.
    • 生物计量仪包括磁场传感器,其包括磁场拾取线圈和在拾取线圈内流动的小电流的检测器。 真空密封的外壳围绕传感器。 外壳具有凹入向上弯曲的第一壁,磁场拾取线圈位于第一壁附近。 液化气体排放的储存器位于外壳内,固体导热体从传感器延伸出来。 存在真空密封的馈热通道,固体热导体通过其进入外壳的内部和外部之间。 还提供了用于滤波和放大检测器的信号的电子电路。 这样的生物计量器放置在倾斜对象的身体下方,并且生物计量器的第二部分可以放置在身体上方。 在一种形式中,外壳被成形为形成容纳主体的头部的空腔,以实现生物计量器中的拾取线圈的全头覆盖。