Pipetting needle and rinse station therefor for fluid...

B - Operations – Transporting – 08 – B

Patent

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B08B 9/02 (2006.01) G01N 1/00 (2006.01) G01N 35/10 (2006.01)

Patent

CA 2218366

A coaxial needle assembly for pipetting reagents under inert atmosphere, as well as a rinsing station is described. A preferred coaxial needle assembly includes a non-coring pipetting needle and a gas pressurization needle coaxial with, and of larger diameter than the pipetting needle. In one embodiment, rinse stations that employ a pipetting syringe to deliver cleaning solvents to cleanse the interior and exterior of a contaminated pipetting needle are described. In an alternative embodiment, rinse stations that use cleaning solvent to cleanse the interior and exterior of a contaminated pipetting needle are described.

L'invention concerne un ensemble aiguille coaxiale destiné au pipetage de réactif en atmosphère inerte, ainsi qu'un poste de rinçage. De préférence, cet ensemble comprend une aiguille pour prélèvement à la pipette de type non sondeuse et une aiguille à pression de gaz, coaxiale par rapport à l'aiguille de pipetage mais de diamètre supérieur. Dans un mode de réalisation, les poste de rinçage décrits font appel à une seringue de pipetage qui permet de délivrer des solvants pour nettoyer l'intérieur et l'extérieur d'une aiguille de pipetage contaminée. Dans une variante, les postes de rinçage décrits sont des unités dans lesquelles on utilise des solvants pour nettoyer l'intérieur et l'extérieur d'une aiguille de pipetage contaminée.

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