Method for taking a blood sample
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United States of America Patent
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-
Feb 8, 1983
Issued Date -
N/A
app pub date -
Nov 2, 1981
filing date -
Jan 17, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved method for taking a sample of blood using a disposable syringe and hypodermic needle assembly comprising the steps of moving the plunger tip of the syringe axially forwardly to expel liquid anti-coagulant and air from the syringe barrel until initial contact of the tip with the barrel end is made, whereby a predetermined amount of the anti-coagulant remains in the barrel; followed by inserting the needle into a blood vessel of the patient and permitting the blood pressure in the blood vessel to move the plunger tip and plunger axially rearwardly in the barrel to take a sample of blood.
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