A medical device is disclosed. The medical device may include an elongate member having a lumen extending at least partially between a proximal end and a distal end of the elongate member. The medical device may also include a plurality of legs coupled to a distal portion of the elongate member, and a distal end piece connected to each of the plurality of legs and located distally to the distal end of the elongate member. The medical device may also include an actuating member coupled to the distal end piece and extending between the plurality of legs and through the lumen. The reciprocal movement of the actuating member may be configured to reversibly move the plurality of legs from a first position to a second position. The medical device may also include a stopping member coupled to the actuating member and configured to limit a movement of the actuating member.