Abstract: An atrial septostomy device (20) includes a support frame (21) for propping a puncture hole in the atrial septum. The support frame (21) includes an expansion portion (23) for propping the puncture hole, a connecting portion (27) connected to a proximal end of the expansion portion (23), and an extension portion (25) connected to a distal end of the expansion portion (23). A distal end of the extension portion (25) has a converged portion (250) that is parallel to the axis of the support frame (21) or extends towards the axis of the support frame (21). The support frame (21) is provided with an ablation electrode (60) for ablating tissues surrounding the puncture hole.

Abstract: An interatrial shunt device includes an opening main body. The opening main body includes an opening component for penetrating the atrial septum and expanding the atrial septal tissue to form an opening. An ablation mechanism that may damage the tissue activity at the opening of the atrial septum is disposed where the opening component contacts the atrial septal tissue. An interatrial shunt system includes the interatrial shunt device, a control mechanism of the interatrial shunt device, and an ablation power source.

Abstract: An interatrial shunt device includes an opening main body. The opening main body includes an opening component for penetrating the atrial septum and expanding the atrial septal tissue to form an opening. An ablation mechanism that may damage the tissue activity at the opening of the atrial septum is disposed where the opening component contacts the atrial septal tissue. An interatrial shunt system includes the interatrial shunt device, a control mechanism of the interatrial shunt device, and an ablation power source.