A device for occluding a septal defect is provided. In general, the occluding device has a contracted state that allows the occluding device to be received within a delivery device for deployment to the site of the defect and an expanded state that is achieved when the occluding device is deployed from the delivery device. The occluding device has a proximal portion, which may be substantially circular, a distal portion, which may be substantially ovaloid, and a connecting portion extending between the two. The distal portion may define first and second outer parts at opposite ends of the major axis, which may be bent or curved. The configuration of the proximal and distal portions allow the occluding device to securely engage the septal wall and be kept in position at the septal defect without causing substantial interference with the functioning of adjacent heart structures.中隔欠損を閉塞するための器具が提供される。一般に、閉塞器具は、欠損の部位に展開するために閉塞器具が送達器具内に収まることができる収縮状態と、閉塞器具が送達器具から展開されるときに実現される拡大状態とがある。閉塞器具は、実質的に円形であり得る近位部と、実質的に卵形であり得る遠位部と、それら２つの間で延びる連結部とを備える。遠位部は、主軸線の両端にあり、屈曲又は湾曲され得る第１の外側部分及び第２の外側部分を定めてもよい。近位部及び遠位部の構成によって、隣接する心臓の構造体の機能を実質的に妨げることなく、閉塞器具を、隔壁にしっかりと係合させることができ、中隔欠損において所定位置に維持することができる。
