Blood collection device and method with anti-backflow means
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United States of America Patent
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Oct 27, 1981
Grant Date -
N/A
app pub date -
Jun 27, 1977
filing date -
Jun 27, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A blood collection tube is provided with a stopper adapted to be pierced by a needle cannula for introducing a sample of blood into the collection tube, and a valve disposed within the tube which allows blood to flow from the proximal end of the needle into the blood collection chamber of the tube but prevents the reflux of blood from the collection chamber to the patient.
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