Disposable device for centrifugal blood separation

摘要

A continuous centrifugal blood separation device has a simple and reliable structure. The continuous blood centrifugal device includes an RBC (red blood cell) collector that is coaxial with a supernatant collector. The continuous blood centrifugal device includes an axial symmetric barrier disposed between the RBC collector and the supernatant collector in order to avoid turbulence that can otherwise be caused by the supernatant collector.

主权项

1. A disposable continuous blood centrifugal device comprising:
a rotatable housing; a rotatable inner bowl disposed within the rotatable housing and defining a space between the rotatable inner bowl and the rotatable housing, the space sized to permit blood to separate into layers, with a more dense layer closest to the rotatable housing and a less dense layer closest to the rotatable inner bowl; a first collector configured to collect blood components from within the more dense layer; a second collector configured to collect blood components from within the less dense layer; a rotatable barrier disposed within the rotatable housing above the rotatable inner bowl, the rotatable barrier configured to direct blood components within the more dense layer towards the first collector and to direct blood components within the less dense layer towards the second collector; and a stationary structure extending downwardly through the rotatable housing and the rotatable inner bowl, the stationary structure including a blood inlet, a first outlet in fluid communication with the first collector and a second outlet in fluid communication with the second collector, wherein the blood inlet extends to a position near a bottom of the rotatable housing, and the stationary structure further comprises a saline inlet that extends to a position near the bottom of the rotatable housing.