| 摘要 |
<p>A valve (70) comprises an inlet (71), an outlet (72) and a movable member (80) with a flexible body (82) and a flexible head (81) for sealing the inlet. The movable member has a slit (S). A tubular cannula (74) with an open end and a bore extends upward from a base (70-b) of the valve, for opening the slit and providing a fluid passage from the open end, through the bore, to the outlet (72). The movable member (80) preferably includes inclined wedges (81-w) to provide a mechanical advantage as the cannula opens the slit. A member external to the flow control device, such as the tip of a Luer taper, can activate the movable member by depressing the movable member over the cannula, which opens the slit, allowing the flow of fluid through the cannula. A space defined by an inwardly tapered bore (75-b1) below the inlet is preferably provided to enable expansion of the movable member as it is depressed over the cannula.</p> |
