High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Vacutainer is a registered brand of test tube specifically designed for venipuncture. It was developed in 1947 by Joseph Kleiner, and is currently marketed by Becton, Dickinson and company. The vein is first punctured with the hypodermic needle which is carried in a translucent plastic holder. The needle is double ended, the second shorter needle being shrouded for safety by the holder. When a Vacutainer test tube is pushed down into the holder, its rubber cap is pierced by the second needle and the pressure difference between the blood volume and the vacuum in the tube forces blood through the needle and into the tube.

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