Patent ID: 6080131
Filing Date: 2000-06-27
Classification: A61M

Abstract:
An apparatus comprising a tubular syringe barrel, an end wall forming one end of the barrel, the other end of the barrel being an open end, a stopper in the open barrel end, and a valve arranged in the barrel between the stopper and the end wall so as to impermeably divide the barrel into a first chamber extending from the stopper to the valve and a second chamber extending from the end wall to the valve, the valve being normally in a closed position and actuatable to an open position by movement of the stopper into the barrel to allow communication between the first and second chambers, wherein the valve comprises an annular sealing surround engaged with an interior surface of the barrel and a tubular body slidably engaged within the annular sealing, the tubular body has an open end toward the first chamber, a blind end toward the second chamber, and an opening on a side between the blind end and the open end thereof, wherein in the closed position of the valve, the annular sealing surround is located near the blind end of the tubular body, and wherein in the open position of the valve, the annular sealing surround is located near the open end of the tubular body.