Technique for priming and recirculating fluid through a...

Details Technique for priming and recirculating fluid through a... Technique for priming and recirculating fluid through a...

A - Human Necessities

61

M

A61M 1/36 (2006.01) A61M 1/16 (2006.01) A61M 39/10 (2006.01)

Patent

CA 2219820

A technique for automatically priming and recirculating sterile fluid through an extracorporeal circuit of a dialysis machine having a blood pump, a dialyzer (54), and a blood tubing set including an arterial line (38) for drawing blood from a patient and a venous line (66) for returning the blood to the patient. The dialysis machine selectively opens and closes clamps (40 and 72) on the arterial and venous lines and further operates a waste valve (106) leading to a waste drain (86). A connector (102) attaches the arterial and venous lines to the waste valve during the priming procedure. The dialysis machine automatically operates the blood pump, the clamps and the waste valve to flush the dialyzer and the blood tubing set with sterile fluid, direct the used fluid down the waste drain and recirculate additional sterile fluid through the extracorporeal circuit.

Technique d'amorçage et de recirculation automatiques d'un liquide stérile à travers un circuit extracorporel d'une machine de dialyse présentant une pompe à sang, un dialyseur (54) et un jeu de tubulures pour le sang, comprenant une conduite artérielle (38) permettant d'extraire le sang d'un patient et une conduite veineuse (66) permettant de ramener le sang dans le corps du patient. Cette machine de dialyse ouvre et referme sélectivement des pinces de fermeture (40 et 72) ménagées sur les conduites artérielle et veineuse et actionne en outre une vanne de décharge (106) conduisant à un dispositif d'évacuation (86) de liquide usé. Un raccord (102) relie les conduites artérielle et veineuse à la vanne de décharge au cours du processus d'amorçage. La machine de dialyse actionne automatiquement la pompe à sang, les pinces et la vanne de décharge de façon à rincer le dialyseur et le jeu de tubulures au moyen du liquide stérile, à diriger le liquide usé vers le dispositif d'évacuation et à recirculer du liquide stérile supplémentaire à travers le circuit extracorporel.

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