A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/15 (2006.01)
Patent
CA 2623420
A closed blood sampling system within a pressure monitoring line having a control valve that enables a clearance reservoir to be isolated from the pressure column when no samples are being taken. The valve is a stopcock-like device that includes a rotating valve member and attached control handle with clear visible and tactile indicators for the mode of operation. The rotating valve member has a number of internal and circumferential channels for connecting or disconnecting select ports in the core of the valve. By isolating the clearance reservoir, the quality of the pressure signal is improved such that the sampling line can be lengthened for greater convenience in the intensive care or operating room. The valve may also incorporate a blunt cannula sampling site therewithin.
L~invention concerne un système de prélèvement sanguin fermé dans un tube de mesure de la pression artérielle, comportant une vanne de régulation permettant d~isoler un réservoir de dégagement de la colonne de pression si aucun prélèvement n~est effectué. La vanne est un dispositif de type robinet d~arrêt qui incorpore un élément de vanne rotatif auquel est fixée une poignée de régulation comportant des indicateurs visuels et tactiles clairs du mode de fonctionnement. L~élément de vanne rotatif comporte un certain nombre de passages internes et circonférentiels servant à connecter ou déconnecter des orifices particuliers dans le corps de la vanne. L~isolation du réservoir de dégagement permet d~améliorer la qualité du signal de pression et donc de rallonger le tube de prélèvement pour plus de commodité en soins intensifs ou dans la salle d~opérations. La vanne peut également incorporer un site de prélèvement par cannule à bout arrondi.
Couchman W. Scott
Drori Hagay
Gordon Mark C.
Liu Jun
Edwards Lifesciences Corporation
Stikeman Elliott S.e.n.c.r.l.,srl/llp
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