Implantable atrial septum septostomy device

The invention relates to the technical field of medical instruments, in particular to an implantable atrial septum septostomy device. The implantable atrial septum septostomy device comprises a radially expanded septostomy portion, a left atrium locating portion and a right atrium locating portion, wherein the left atrium locating portion and the right atrium locating portion are respectively located on two sides of the septostomy portion. The implantable atrial septum septostomy device further comprises an ablation sheet; the ablation sheet is located on the outer side of the septostomy portion; and a connecting portion of the ablation sheet penetrates into the right atrium locating portion from a hollow of a right atrium locating unit. Due to the mode, the ablation sheet swells with theexpansion of the septostomy portion and then is withdrawn through the connecting portion, so as to avoid the ablation sheet from causing a thrombus and prolong the overall service life.