Clip instruments

A clip instrument, comprising:

• a clip arm including at least two clips for clamping at least one tissue and at least two extending parts releasably connected to the at least two clips, respectively, the clip arm having an open state and a closed state, wherein the at least two clips are spaced apart from each other when the clip arm is in the open state, and the at least two clips are close to each other when the clip arm is in the closed state;
• a locking part disposed on the at least two clips, wherein the locking part is configured to lock two clips of the at least two clips when a distance between the two clips is less than a preset distance;
• and
• a conveying part including a sheath tube disposed with a channel and a core shaft axially extending along an axial direction within the channel of the sheath tube, a distal end of the sheath tube including a resisting part, wherein
• for each of the at least two extending parts, a proximal end of the extending part is connected to the core shaft, a distal end of the extending part is releasably connected to one of the at least two clips corresponding to the extending part, an axial movement of the at least two extending parts drives the clip arm to switch between the open state and the closed state, and the proximal end of each of the at least two extending parts is disposed with a resisted part;
• after the at least two clips are locked, when each of the at least two extending parts continues to move along a direction from the distal end of the extending part to the proximal end of the extending part, the at least two extending parts are released from the at least two clips, and the clip arm is released from the sheath tube;
• after the resisting part and the resisted part abut against each other, when each of the at least two extending parts continues to move along the direction from the distal end of the extending part to the proximal end of the extending part, the resisting part limits movement of the resisted part along the direction from the distal end of the extending part to the proximal end of the extending part.