Patent ID: 6672345
Filing Date: 2004-01-06
Classification: A61B,B01L

Abstract:
In combination with a tube holding a sample of blood and having an end provided with a pierceable closure, an apparatus for withdrawing gas from the tube comprising:a stationary guide defining an axis inclined at an angle to the horizontal; a needle fixed in the guide and projecting axially downward therein; a slide in the guide forming a downwardly inclined and open seat centered on the axis and adapted to receive the end of the tube, the slide being movable in the guide between an outer position with the seat spaced past an end of the needle and an inner use position with the needle projecting into the seat, whereby in the use position the needle projects through the closure of the tube fitted to the seat; biasing means for urging the slide axially downward in the guide; and means for aspirating air through the needle.