Anticoagulant internally coated needle

Details Anticoagulant internally coated needle Anticoagulant internally coated needle

A - Human Necessities

61

L

A61L 33/10 (2006.01) A61B 5/15 (2006.01) A61L 31/10 (2006.01) A61M 5/32 (2006.01)

Patent

CA 2301838

To prevent the dilution effect that causes inaccuracy in the measurement of the characteristics of blood drawn from a patient, a needle assembly (2) has the interior portion of its cannula (6) and at least one portion of its hub (4) covered by a dry coat of anticoagulant. To provide the dry coat of anticoagulant onto the interior surfaces of the cannula (6) and the hub (4), a liquid anticoagulant is atomized thereto so that an even coat of the anticoagulant is provided to the interior surfaces of the cannula and hub. The volume and concentration of the anticoagulant atomized to the inside of the needle assembly are controlled as the liquid anticoagulant is ultra-sonically atomized to the interior portion of the needle assembly.

Pour prévenir l'effet de dilution qui génère des mesures imprécises des caractéristiques du sang prélevé chez un patient, la partie interne de la canule d'un ensemble aiguille et au moins une partie de son embout sont recouverts d'un enrobage sec d'anticoagulant. Pour appliquer l'enrobage sec d'anticoagulant sur les surfaces internes de la canule et de l'embout, on pulvérise sur celles-ci un anticoagulant liquide de façon à former une couche uniforme d'anticoagulant. Le volume et la concentration d'anticoagulant pulvérisé à l'intérieur de l'ensemble aiguille sont régulés au moment où l'anticoagulant liquide est pulvérisé de manière ultrasonique.

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