Syringe
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United States of America Patent
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Oct 25, 1983
Issued Date -
N/A
app pub date -
Nov 22, 1982
filing date -
Nov 2, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Improved disposable syringe for taking arterial blood samples for blood gas testing and for administering epidural anaesthesia, wherein the syringe plunger has a compressible elastomeric tip member which has a peripheral annular wiper extending axially forwardly toward the syringe floor and radially outwardly at an acute angle to the longitudinal center line of the barrel and plunger to form an excellent seal with the inner surface of the syringe barrel while at the same time providing only a gentle pressure against such surface and hence an exceptionally low resistance to axial movement of the tip member and plunger.
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