INDWELLING DEVICE

To provide an indwelling device that can easily fix a position in an axial direction of an insertion part inserted in a catheter.SOLUTION: An indwelling device 1 includes: an insertion part 10 extracted and inserted in a catheter 60; a connection part 20 where the proximal end of the catheter is mounted; and a fixing part 25 connected to the base end side of the connection part, and capable of fixing the position in the axis line C direction of the insertion part. The fixing part has: a fixing part body 26 connected to the base end side of the connection part, and having the insertion part inserted into the inside; a locking part 48 connected to the base end side of the fixing part body; and an operation member 29 moving between a first position and a second position P2 to the fixing part body, and changing the position where a portion 47 of the locking part is arranged at the first position and the second position. The position where the portion is arranged when the operation member is arranged in the second position becomes the inside in the radial direction rather than the position where the portion is arranged when the operation member is arranged in the first position. The locking part holds the insertion part, or the locking part holds the insertion part along with the fixing part body.SELECTED DRAWING: Figure 2 【課題】カテーテル内に挿入される挿入部の軸線方向の位置を容易に固定できる留置装置を提供する。【解決手段】留置装置１は、カテーテル６０内に抜き差しされる挿入部１０と、カテーテルの基端部が取付けられる接続部２０と、接続部の基端側に接続され、挿入部の軸線Ｃ方向の位置を固定可能な固定部２５と、を備え、固定部は、接続部の基端側に接続され、内部に挿入部が挿入される固定部本体２６と、固定部本体の基端側に接続された係止部４８と、固定部本体に対して第１位置と第２位置Ｐ２との間を移動し、第１位置と第２位置とで、係止部の一部４７が配置される位置を変化させる操作部材２９と、を有し、操作部材が第１位置に配置されたときに一部が配置される位置よりも、操作部材が第２位置に配置されたときに一部が配置される位置が、径方向の内側となり、係止部が挿入部を保持するか、係止部が固定部本体とともに挿入部を保持する。【選択図】図２