The invention relates to a shunt
stoma system, and belongs to the technical field of
medical instruments. According to the atrial tissue
cutting device, the pushing tube movably penetrates through the
shunting sheath tube, the connecting rod movably penetrates through the pushing tube, the plug is connected with the connecting rod, and the cutter is arranged at the far end of the pushing tube, so that the plug and the cutter can be conveniently matched to clamp the atrial tissue to be
cut, and the pushing tube can conveniently drive the cutter to rotate and move so as to
cut the clamped tissue; according to the split-flow ostomy device, the cutter is arranged at the far end of the cutter, and the plug plugs the far end opening of the cutter, so that the
cut tissue is plugged in a space formed by the plug and the cutter, the cut tissue can be conveniently withdrawn out of a body along with the split-flow ostomy device, and the cut tissue is prevented from being left in the atrium; the shunt
stoma device in the
system is reasonable in structural design and convenient to use, and cut tissue cannot fall off easily in the withdrawing process.