| 摘要 |
<p>A medical stent includes a first cylindrical body having a first inner diameter and a central axis, a second cylindrical body connected to one end of the first cylindrical body and having a second inner diameter, and a valve assembly for preventing food or fluid from flowing upstream. The valve assembly includes first, second and third valve members that are extended the central axis to an inner circumference wall of the first cylindrical body and spaced away from each other at an angle of 120 DEG in a circumference direction of the first cylindrical body, the first, second and third valve members being provided with first, second and third passages, respectively, and a supporting valve member for connecting lower ends of the first, second and third valve members to an inner circumference wall of the first cylindrical body. <IMAGE></p> |
