Pipette tip with self-aligning and self-sealing features

Details Pipette tip with self-aligning and self-sealing features Pipette tip with self-aligning and self-sealing features

B - Operations, Transporting

01

L

B01L 3/02 (2006.01) B01L 9/00 (2006.01) G01N 1/14 (2006.01) G01N 35/10 (2006.01) G01N 35/04 (2006.01)

Patent

CA 2122244

A pipette tip (30) for use in automated assay testing systems includes an annular, protruding seal rings (78, 80) on the interior wall of the pipette for engaging sealing surfaces (114, 116) on a probe (100) to provide a resilient seal. The pipette tip also includes a positive stop (66) for assuring proper positioning and alignment of the pipette tip on the probe for facilitating mounting of the pipette tip on the probe while minimizing variation in the loading and unloading forces required. Locator surfaces (32, 48) are provided on the exterior of the pipette tip for precisely aligning the pipette tip in the system rack for positioning the pipette tip relative to the probe.

Une pointe (30) de pipette destinée à être utilisée dans des systèmes d'analyse automatique comprend des bourrelets d'étanchéité saillants (78, 80) situés sur la paroi intérieure de la pipette et venant au contact de surfaces d'étanchéité (114, 116) situées sur une sonde (100) afin de constituer un joint souple. La pointe de la pipette comprend également une butée d'arrêt (66) destinée à assurer un positionnement et un alignement corrects de la pointe de la pipette sur la sonde afin de faciliter le montage de ladite pointe de pipette sur cette dernière tout en réduisant au minimum les variations se produisant dans les forces de charge et de décharge requises. Des surfaces de guidage (32, 48) sont ménagées sur la partie extérieure de la pointe de la pipette afin de l'aligner avec précision dans le support du système pour positionner la pointe de la pipette par rapport à la sonde.

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