Liquid dispenser

Details Liquid dispenser Liquid dispenser

B - Operations, Transporting

01

L

B01L 3/00 (2006.01) B01L 99/00 (2010.01) A61B 10/00 (2006.01)

Patent

CA 2131900

A dispenser (20) for blood and other biological speci- mens (11) is disclosed which provides a means of obtaining a small predetermined quantity of specimen from a closed con- tainer (10) without the need to remove the stopper (13) from the container. The cannula (19) of the device is caused to pierce the container's rubber stopper forming an assembly. When the said assembly is forced against a target surface; such as microscope slide (30), the force compresses the stop- per and thereby reduces the volume inside the container suffi- ciently to eject a drop of fluid which is dispensed onto a target surface. Stabilizing supports (26) are provided so that fluid emerges from a dispensing tip (22) located a predetermined distance above the target surface which determines the quanti- ty of fluid dispensed. The supports also transmit reactive force from the target surface to compress the rubber stopper of the closed specimen tube.

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