Abstract: A stent having an improved anti-sliding function is proposed. The stent includes an inner stent and a pair of outer stents that have undergone heat treatment and have several spaces formed by weaving or crossing wires made of a superelastic shape memory alloy in a hollow cylindrical net shape, in which each of the outer stents is shorter than the inner stent and has an enlarged section having a diameter larger than the inner stent and a bending section formed by bending inward a side of the enlarged section; and the pair of outer stents are fitted on both ends of the inner stent such that the enlarged sections of the outer stents face each other, and spaces of the inner stent and spaces of the bending sections of the outer stents are connected by a connection thread, whereby a space section is defined between the inner stent and the outer stents.

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.

Abstract: A medical stent for use in a procedure for connecting two adjacent tissues in a human organ to form a passageway therebetween or a procedure for draining or shunting away internal fluids such as bile, pus, or the like. To manufacture the stent, a hollow tubular mesh body having diamond-like cells is weaved using super-elastic shape memory wire strands, both axial ends of the mesh body are expanded and multi-folded to form washer-shaped ends, and the both washer-shaped ends are provided with respective reinforced supportive rims formed by narrowing the cells of the end portions of the mesh body such that the wire strands at each axial end of the mesh body are superimposed to improve radial supporting force. The stent can lock in place when staying implanted in a human body.

Abstract: A stent insertion device for connecting human digestive organs includes a first handle being connected to one side of an outer tube, the first handle including a first inner passage communicating with the outer tube, a second handle being connected to a first side of an inner tube, the second handle including a second inner passage communicating with the inner tube, wherein a mounting space is provided between the outer tube and the inner tube at a second side of the inner tube, a stent for connecting human digestive organs being compressed and mounted to the mounting space, a third handle being connected to a first side of an insulation tube, the third handle including a third inner passage communicating with the insulation tube, and a needle knife being connected to a second side of the insulation tube.