A medical device is disclosed. The medical device can comprise an elongate member having a lumen that extends at least partially between the proximal and distal ends of the elongate member. The medical device also includes a plurality of legs coupled to the distal portion of the elongate member and connected to each of the plurality of legs and located distal to the distal end of the elongate member. And a distal end component. The medical device can also include an actuating member coupled to the distal end component and extending between the plurality of legs through the lumen. The reciprocating motion of the actuating member may be configured to reversibly move the plurality of legs from the first position to the second position. The medical device can also include a stop member coupled to the actuation member and configured to limit movement of the actuation member.医療装置を開示する。医療装置は、長尺状部材の近位端部と遠位端部との間に少なくとも部分的に延びる管腔を有する長尺状部材を備え得る。医療装置はまた、長尺状部材の遠位部分に結合された複数の脚部と、その複数の脚部の各々に接続され、かつ長尺状部材の遠位端部の遠位側に位置する遠位端部品とを備え得る。医療装置はまた、遠位端部品に結合され、かつ管腔を通って複数の脚部の間に延びる作動部材を備え得る。作動部材の往復運動は、複数の脚部を第１位置から第２位置に可逆的に移動させるように構成され得る。医療装置はまた、作動部材に結合され、かつ作動部材の移動を制限するように構成された停止部材を備え得る。
