Patent ID: 8479596
Filing Date: 2013-07-09
Classification: G01N

Abstract:
1. Device for sampling a liquid in a tube closed by a cap, comprising a needle displaced in translation by motor means in order to pass through the cap of the tube, means of immobilising the tube which can be displaced with the needle in order to press against the cap when the needle is descended through the cap, means for blocking means for immobilising when the needle is raised through the cap and means for unblocking means for immobilising when the needle is out of the cap, wherein the means for blocking include a toothed wheel mounted rotating about a stirrup by the intermediary of a unidirectional rotation mechanism, said stirrup being mounted pivoting around an axis between a first position where the toothed wheel is engaged with a rack parallel to the direction of displacement of the needle and a second position where it is separated from this rack, the unidirectional rotation mechanism of the toothed wheel authorising, when the toothed wheel is in the first position, a descending of the means for immobilising and prohibiting in this first position the rising of the means for immobilising.