US 2019/0167455 A1 · STENT HAVING IMPROVED ANTI-MIGRATION FUNCTION

Abstract

A stent is effective for anti-migration after operation of a lumen, and a first outer stent or a second outer stent is used to be integral to a cylindrical stent and an upper end part of each of the first outer stent or the second outer stent is connected to the cylindrical stent by sutures to have a space part between the cylindrical start, the first outer stent, and the second outer stent. The space part is provided such that the first outer stent or the second outer stent is freely moved or transformed by an external force, and a displacement part caused by the movement or a transformation part caused by the transformation further presses or moves into a lesion part or an inner surface of the lumen to be securely held thereon, whereby the stent is effectively prevented from deviating from the lesion part.

Claims13

Dependent claims

A stent having an improved anti-migration function, the stent including a cylindrical stent formed by interweaving superelastic shape memory alloy wires, the stent comprising:

an outer stent including a bent part bent from an upper end thereof at a predetermined interval so as to have a diameter larger than a diameter of the cylindrical stent, and a cylindrical body part provided beneath the bent part and having the diameter larger than the diameter of the cylindrical stent by interweaving the superelastic shape memory alloy wires;
and
a space part defined between the cylindrical stent and the outer stent by connecting one end of the outer stent to the cylindrical stent by sutures.

Dependencies are inferred from the claim text.

Stent having improved anti-migration function

Life of this patent

Stent having improved anti-migration function

Life of this patent

Abstract

Claims13