PROBLEM TO BE SOLVED: To prevent a sensor which has been inserted in a living body from being taken out to the outside of the living body when an insertion needle is removed, and to surely make the sensor detained in the living body.SOLUTION: The embeddable sensor 10 includes: a sensor body 12 a detecting section 14 which is housed in the sensor body 12 and a locking means 16 which is installed on the side surface of the sensor body 12. On the side surface of the sensor body 12, at least one or more projections 22a and 22b which function as the locking means 16 are formed. The projections 22a and 22b are formed into a V shape which expands from the distal end to the proximal end side of the sensor body 12 in such a manner that the height may gradually become higher from the distal end to the proximal end side. Also, the projections 22a and 22b are formed of a material of which the hardness declines after a specified period of time has passed in the living body S. Therefore, the locking function is presented when the embeddable sensor 10 is inserted in the living body S, and the locking function is canceled after the specified period of time has passed.COPYRIGHT: (C)2013,JPO&INPIT【課題】生体内に挿入されたセンサが挿入針の抜去時に生体外へ取り出されてしまうことを防止し、生体内に確実に留置しておく。【解決手段】埋め込み式センサ10は、センサ本体12と、該センサ本体12の内部に収納される検出部14と、前記センサ本体12の側面に設けられた抜け止め手段16とを備え、前記センサ本体12の側面には、前記抜け止め手段16として機能する少なくとも一つ以上の突起部22a、22bが形成される。この突起部22a、22bは、センサ本体12の先端から基端側に向かって広がるV字状に形成され、該先端から基端側に向かって徐々に高さが高くなるように形成される。また、突起部22a、22bは、生体S内で所定時間経過後、その硬度が低下する材料から形成されているため、前記埋め込み式センサ10の生体S内への挿入時には抜け止め機能を営み、所定時間経過後には抜け止め機能が解除される。【選択図】図1
