Medical material

Abstract

A defect hole closing material achieves less invasive treatment for atrial septal defect with no or little possibility of problems in the late post-treatment period. A defect hole closing material includes two tubular bodies (a first tubular portion and a second tubular portion) made of a bioabsorbable material and having a mesh structure; and a substantially middle portion between the two tubular bodies. The first tubular portion is provided with a radiopaque material, the second tubular portion is provided with a radiopaque material, and the substantially middle portion is provided with a radiopaque material. In catheterization for atrial septal defect, when the defect hole closing material is pushed out of a catheter until the radiopaque material reaches an exit of the catheter in a fluoroscopic X-ray image obtained by X-ray imaging of a site including the defect hole closing material, only the second tubular portion increases in tube diameter while the first tubular portion does not increase in tube diameter.

Dependencies are inferred from the claim text.