Patent ID: 8968231
Filing Date: 2015-03-03
Classification: A61M,B01D

Abstract:
1. An extracorporeal blood circuit comprising: a withdrawal conduit connectable to a coronary withdrawal catheter; a withdrawal pump connectable to the withdrawal conduit, wherein a pumping rate of the withdrawal pump determines a blood withdrawal rate from the coronary withdrawal catheter; a filter having an input connected to the withdrawal conduit and a blood output connected to an infusion conduit and a filtrate output connected to a filtrate conduit; a by-pass conduit coupled to the withdrawal conduit at a position upstream of the filter and said by-pass conduit also coupled to the infusion conduit, wherein a by-pass pump connectable to the by-pass conduit determines a blood flow rate through the by-pass conduit, and a controller regulating the pumping rate of the by-pass pump such the blood flow rate through the by-pass conduit is substantially zero while a contrast agent is in the blood.