A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/80
A61M 1/00 (2006.01) A61M 5/162 (2006.01)
Patent
CA 1063901
A B S T R A C T A non-return valve for the aerating aperture in a piercing pin in an infusion or transfusion device is charact- erized in that it has a wedge-shaped portion, the tapered end of which abuts the aperture under tension.
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