主权项 |
1. A stent for use in medical treatment of an aneurysm, comprising:
a cylindrical stent body provided on a peripheral wall and having a plurality of insertion portions through each of which a catheter is insertable; and a plurality of valving elements provided in the insertion portions respectively, each valving element being opened when the catheter is inserted through one of the insertion portion, each valving element being closed when the catheter is pulled out of the insertion portions, thereby suppressing an outflow into a blood vessel of an embolic material placed in the aneurysm. |