PROBLEM TO BE SOLVED: To provide a tubular instrument configured to be suitable for causing a tubular member to follow a bending action of a bend part.SOLUTION: A tubular instrument includes: an insertion tube to be inserted into a body cavity a body portion connected to a proximal end of the insertion tube a bending means for bending at least part of the insertion tube a tubular member having a distal end disposed inside the insertion tube and a proximal end disposed inside the body portion, bent inside the insertion tube together with the bending of the insertion tube by the bending means, and configured in such a manner that a part disposed inside the body portion is pulled into the insertion tube or a part disposed inside the insertion tube is extruded into the body portion according to the length of the bent portion and a storage space defining means for defining a storage space capable of storing the tubular member separate from the other built-in elements inside the body portion. The storage space stores the tubular member while being loosened so as to satisfy a required pull-in length into the insertion tube, and has a capacity enabling the tubular member while being loosened further as compared with the loosened state inside the body portion by extrusion from the inside of the insertion tube, to be stored.COPYRIGHT: (C)2013,JPO&INPIT【課題】管状部材を湾曲部の湾曲動作に追従させるのに好適に構成された管状器具を提供すること。【解決手段】管状器具を、体腔内に挿入される挿入管と、挿入管の基端に連結された本体部と、挿入管の少なくとも一部を屈曲させる屈曲手段と、先端が挿入管内に配置され、基端が本体部内に配置されており、屈曲手段による挿入管の屈曲と共に挿入管内で屈曲し、屈曲した部分の長さに応じて、本体部内に配置された部分が挿入管内へ引き込まれ、又は挿入管内に配置された部分が本体部内へ押し出される管状部材と、管状部材を本体部内で他の内蔵物と分離して収容可能な収容空間を規定する収容空間規定手段とから構成する。この収容空間は、挿入管内への必要な引き込み長が満足されるように管状部材を弛ませた状態で収容しており、かつ、挿入管内からの押し出しによって本体部内で上記弛み状態よりも更に弛ませられた状態の管状部材を収容可能な容量を持つ。【選択図】図2
