| 摘要 |
An annul protecting portion 23 having a thickness larger than the thickness of a sensor sensitive portion 1 is provided in such a manner as to surround the sensor sensitive portion 1, the sensor sensitive portion 1 together with the protecting portion 23 is placed between living tissues, so as to ensure that the gate portion 7 is not subjected to an external pressure by coming into contact with the living tissues. Further, outer peripheries of lead wires 4 on the sensor sensitive portion 1 side are covered with a plasticity material 24 woven into a tubular shape by a metal wire such as a stainless steel wire, and is grounded together with the metallic protecting portion, so as not to be subjected to induction noise. Further, the metal wire is bent to hold the sensor sensitive portion 1 at a suitable angle.
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