| 主权项 |
1. A medical device comprising:
a valve member configured to be positioned inside a bodily passageway, the valve member defining an inlet port for receiving bodily material, the valve member defining an outlet port for outputting the bodily material, the valve member having a plurality of flaps configured to move from a first position in which the bodily material is prevented from flowing out of the outlet port to a second position in which the bodily material is permitted to flow out of the outlet port, the plurality of flaps being configured to move from the first position to the second position when a pressure from the bodily material exceeds a threshold, the plurality of flaps including a first flap and a second flap, the first flap and the second flap being configured to move away from each other when the pressure exceeds the threshold such that an opening is formed between the first flap and the second flap, the valve member including an upper portion and a lower portion, the upper portion being larger in circumferential area than the lower portion, the opening being disposed along a portion of a longitudinal axis of the valve member, the opening starting at an edge of the lower portion and extending into the upper portion of the valve member along the portion of the longitudinal axis of the valve member; and a securing member configured to be positioned outside the bodily passageway, the securing member being configured to help retain the valve member in place within the bodily passageway, the upper portion on the valve member including a first raised portion and a second raised portion, the first raised portion being disposed apart from the second raised portion, the first raised portion and the second raised portion being disposed between the inlet port and the outlet portion, the securing member defining a loop, the loop configured to be disposed between the first raised portion and the second raised portion. |
