Patent ID: 6159185
Filing Date: 2000-12-12
Classification: G01N

Abstract:
An automatic sampling device, comprising:a syringe including a barrel, and a hollow needle attached to the barrel and having an opening at a tip thereof,a plug formed of a soft elastic member and slidably engaging the needle to cover at least the opening of the needle, anda guide mechanism situated between the plug and the syringe, said guide mechanism holding the plug to allow the plug to hold the tip of the needle along a center axis of the syringe and to allow the needle to move through the plug between the tip and a root of the needle, said guide mechanism including a needle guide engaging and guiding the needle, to which the plug is attached, and having a side portion for holding the plug, said side portion being partly bent to compress an end portion of the plug so that when the tip of the needle is located in the plug, the opening of the needle is surely closed to prevent passage of a fluid therethrough.