Abstract: A cooling device may be configured to cool a shape-memory alloy member. The cooling device may include: a cooling unit configured to cool the shape-memory alloy member or a part that is to make contact with the shape-memory alloy member; a refrigerant supply pipe including one end connected to a refrigerant supply source and other end connected to the cooling unit, the refrigerant supply pipe configured to supply a refrigerant supplied from the refrigerant supply source to the cooling unit; and a refrigerant discharge pipe including one end connected to the cooling unit, the refrigerant discharge pipe configured to discharge the refrigerant discharged from the cooling unit from other end of the refrigerant discharge pipe.

Abstract: A suture needle for endoscopic surgery, may include: a needle body; a suture thread; and a connector configured to connect the needle body and the suture thread, wherein the needle body mat be constituted of a shape memory alloy, may have an arc shape as its original shape, and may be configured to be restored to the arc shape at a predetermined temperature or higher, and the connector may be constituted of a material different from the shape memory alloy.