PROBLEM TO BE SOLVED: To provide an introduction device within a subject, which can surely turn on and off various kinds of functions within the introduction device within the subject and steadily maintain an on-state or off-state even if the device is introduced in the subject.SOLUTION: The introduction device within the subject includes: a magnetic field detecting member for detecting a magnetic field with directivity at least one functional member with a function necessary for detecting or curing inside of the subject a switching control section for controlling turning on and off of at least one functional member or changing of an operation mode when the magnetic field detecting member detects the magnetic field, and a permanent magnet for controlling the direction of the introduction device within the subject by the magnetic field generated outside the subject. The permanent magnet and the magnetic field detecting member are allocated in such a manner that the direction of the magnetic field, which is generated by the permanent magnet, is vertical to the direction of the magnetic field, which is detected by the magnetic field detecting member.COPYRIGHT: (C)2012,JPO&INPIT【課題】被検体内に導入された後であっても被検体内導入装置内の各種機能のオンオフを確実に行うことができ、かつオン状態あるいはオフ状態を安定して維持することができる被検体内導入装置を提供すること。【解決手段】指向性をもって磁場を検出する磁場検出部材と、被検体の内部の検査または治療を行うために必要な機能を持つ少なくとも1つの機能部材と、磁場検出部材が磁場を検出した場合に少なくとも1つの機能部材のオンオフあるいは動作モードの切替えを制御するスイッチ制御部と、被検体内導入装置の方向を被検体外で発生される磁場によって制御する永久磁石と、を備え、永久磁石の磁場発生方向と磁場検出部材の磁場検出方向とが垂直になるように永久磁石および磁場検出部材とが配置される。【選択図】図42
