Blood collection system deriving instantaneous component yield

B - Operations – Transporting – 01 – D

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B01D 21/26 (2006.01) A61M 1/34 (2006.01) A61M 1/36 (2006.01) B01D 17/02 (2006.01) B01D 21/24 (2006.01) B04B 5/04 (2006.01) B04B 13/00 (2006.01)

Patent

CA 2195069

Systems for separating platelets from blood in a centrifuge separation device (12) to derive the yield of platelets through tubing branch (30) in real time as processing is accomplished. The systems determine an incremental blood volume processed from tubing branch (20) during a succession of incremental time periods during a separation step. The systems also estimate a separation efficiency for the separation device (12) during each incremental time period, while also estimating a current count of platelets available from a donor through branch (20) during each incremental time period. The systems multiply incremental blood volume for each time period by the estimated current count of platelets and by the estimated separation efficiency, to derive incremental platelet yields.

Système permettant de séparer des plaquettes du sang dans un dispositif (12) de séparation par centrifugation pour calculer le rendement en plaquettes passant par une branche de tubulure (30) en temps réel, au fur et à mesure du fractionnement. Lesdits systèmes déterminent un volume sanguin incrémentiel fractionné à partir d'une branche (20) de tubulure au cours d'une succession de périodes temporelles incrémentielles d'une étape de séparation. Ils estiment également un rendement de séparation pour le dispositif de séparation (12) pendant chaque période temporelle incrémentielle, tout en estimant aussi une numération plaquettaire réelle disponible à partir d'une branche (20) passant par le donneur au cours de chaque période temporelle incrémentielle. Les systèmes multiplient le volume sanguin incrémentiel pour chaque période temporelle par la numération plaquettaire réelle estimée et par l'efficacité de séparation estimée pour calculer des rendements en plaquettes incrémentiels.

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