A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/83
A61M 1/00 (2006.01)
Patent
CA 1091117
ABSTRACT Improved disposable syringe for taking blood or other fluid samples, particularly arterial samples for blood gas testing or the like, which comprises a syringe body, a piston or plunger having a compressible end piece which forms a seal with the inner surface of the syringe body, the sy- ringe body preferably having no outward taper between the innermost reach of said compressible end piece and the loca- tion of said end piece when a sample of desired volume is drawn. The syringe has means which prevent contact between the compressible end piece and the end wall of the syringe and define its minimum volume, and the amount of friction be- tween the end piece and the syringe wall is low enough for- the syringe to be self-aspirating, and preferably has means for resisting further movement of the end piece when the desired sample size has been obtained.
247473
Concord Laboratories Inc.
Ridout & Maybee Llp
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