Patent ID: 8777983

Claim:
A defect-closure device for closing a passage-like defect, in a state that an opening of the passage-like defect in a living body is covered with a septum, comprising: a free enlargement-contraction first member comprising elastic wire rods configured to push said septum to said opening and to support the septum in a closed state of the passage-like defect; and a free enlargement-contraction second member comprising elastic wire rods and being jointed to said first member via a joint part, wherein said second member is jointed to the first member at a base end part of the second member, and an opposing end part of the second member opposite the base end part has a plurality of protrusion parts configured to elastically contact the inner surface of an opening edge of said opening so as to fulfill an automatic aligning function in which the first member is concentrically arranged with the opening of the passage-like defect; wherein the joint part is jointed, via an engaging-releasing unit, with an operation wire for pushing the first member and the second member; and the engaging-releasing unit is configured to release engagement with the joint part by moving forward and backward relative to the joint part or by rotation of the operation wire relative to the joint part.