Patent WO-2013176409-A1 (WO)
Title: Stent, device for inserting stent, and surgical operation method using same
Inventor: LEE HAN CHEOL
IPC: A61F2/82
Filed: 2013-04-26
Abstract: A device for inserting a stent of the present invention comprises: a first stent insertion unit; and a second stent insertion unit. The first stent insertion unit comprises: a first insertion portion formed by extending a first outer tube; a first aiding portion formed by extending a first inner tube inserted into the first insertion portion to be slid back and forth inside the first outer tube; a first central tube into which a first guide wire is to be inserted, and which is inserted into the first aiding portion to penetrate the first inner tube; and a first stent to be inserted into the front end of the first outer tube while encompassing the circumference of the first central tube and is discharged outside the first outer tube by forward movement of the first inner tube so as to be extended. The second stent insertion unit comprises: a second insertion portion formed by extending a second outer tube to be inserted into the first outer tube; a second aiding portion formed by extending a second inner tube inserted into the second insertion portion to slide back and forth inside the second outer tube; a second central tube which is inserted into the first insertion portion to be extended between the first outer tube and the first inner tube, into which a second guide wire fixed to the first stent is inserted, and which is inserted into the second aiding portion to penetrate the second inner tube; and a second stent to be inserted into the front end of the second outer tube while encompassing the circumference of the second central tube and is discharged outside the second outer tube by forward movement of the second inner tube so as to be extended. In addition, a method for inserting a stent of the present invention comprises the steps of: inserting the first guide wire into a main stenosis region; inserting the first guide wire into the first central tube to insert the first outer tube into the main stenosis region along the first guide wire; operating the first stent insertion unit to move the first inner tube forward, thereby discharging the first stent to the main stenosis region and placing the front end of the second guide wire at a branch stenosis region; expanding the first stent; retreating the first inner tube to secure an inner space of the first outer tube; inserting the back end of the second guide wire into the second central tube to insert the second outer tube into the branch stenosis region along the second guide wire; operating the second stent insertion unit to move the second inner tube forward, thereby discharging the second stent to the branch stenosis region; and expanding the second stent. Additionally, a stent of the present invention comprises an artificial blood vessel comprising: a body in which a plurality of holes are formed on the surface, a hollow is formed inside by intersecting wires, and a circumference can be extended and contracted; and a marker which encompasses the circumference of the body, has a through-hole at one side, and guides the displacement of the body.