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    Electronic anatomical probe
    1.
    发明授权
    Electronic anatomical probe 失效
    电子解剖探针

    公开(公告)号：US4526177A

    公开(公告)日：1985-07-02

    申请号：US507358

    申请日：1983-06-24

    Applicant: Michael A. Rudy ,  Joseph Jacob

    Inventor： Michael A. Rudy ,  Joseph Jacob

    IPC: A61B5/06 ,  G01V3/10 ,  H03K17/95

    CPC classification number: A61B5/06 ,  G01V3/102 ,  H03K17/954

    Abstract: A wire sensing coil is sealed in the tip of an elongate, rigid, plastic probe, and is connected by a coaxial cable releasably to a housing containing a fixed frequency, crystal-controlled oscillator, the output of which is applied through a high impedance resistor and the cable to the coil. The number of turns in the coil and the cable length are carefully selected so that the coil remains tuned to the frequency of the oscillator, except when the tip of the probe approaches a metal object, at which time the voltage drop across the coil decreases. The housing also contains an audible alarm, and a sensing circuit which detects the voltage drop across the coil, and which energizes the alarm when the voltage across the coil drops below a preset or predetermined level. The housing also contains a rechargable battery for supplying power to the oscillator and alarm circuits, and a recharging circuit for recharging the battery. A manually operable switch on the housing connects the battery to the oscillator when the switch is in its ON position, and connects the recharging circuit to the battery when in its OFF position.

    Abstract translation: 线感测线圈密封在细长的刚性塑料探针的尖端中，并通过同轴电缆可释放地连接到包含固定频率的晶体振荡器的壳体，其输出通过高阻抗电阻器 和电缆到线圈。 仔细选择线圈中的匝数和电缆长度，使得线圈保持调谐到振荡器的频率，除非探头的尖端接近金属物体，此时线圈上的电压降降低。 外壳还包含一个声音报警器，以及检测线圈两端的电压降的检测电路，当线圈两端的电压下降到预设或预定的电平以下时，该报警器通电。 壳体还包含用于向振荡器和报警电路供电的可再充电电池，以及用于为电池充电的再充电电路。 当开关处于ON位置时，壳体上的手动开关将电池连接到振荡器，并且在处于OFF位置时将充电电路连接到电池。

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