A blood transfer chamber

A - Human Necessities – 61 – M

Patent

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Details

A61M 1/36 (2006.01) A61M 1/00 (2006.01)

Patent

CA 2671077

In a blood transfer chamber, a filter (4) is arranged at an outlet located on a bottom of the chamber. The filter is truncoconical with a vertically-disposed axis. The filter has a plurality of openings (13, 14) for fluid passage, a size of which openings increases gradually in an upwards direction going from bottom to top of the chamber. The filter is used in a venous air-blood separation chamber of a dialysis set. The invention enables a reduction of a risk of hemolysis during treatment as well as a reduction of the risk of formation of air bubble retention in the filter during a priming stage.

L'invention concerne une chambre de transfert de sang dans laquelle un filtre (4) est disposé au niveau d'une sortie située sur un fond de la chambre. Le filtre est tronconique et son axe est disposé verticalement. Le filtre présente une pluralité d'ouvertures (13, 14) pour le passage du fluide, une dimension desdites ouvertures augmentant progressivement dans une direction ascendante allant de bas en haut de la chambre. Le filtre est utilisé dans une chambre de séparation air-sang veineux d'une installation de dialyse. L'invention permet une réduction d'un risque d'hémolyse pendant le traitement ainsi qu'une réduction du risque de formation d'une rétention de bulles d'air dans le filtre au cours d'une phase d'amorçage.

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