Patent ID: 8153008

Claim:
A device for filtering blood comprising: a filter unit in connection with an inlet for blood to be filtered and being connectable to an artery of a patient through an inlet nipple and a blood outlet for filtered blood and being connectable to a vein of the patient through an outlet nipple, the filter unit further comprising closed ends in inlet and outlet regions of the filter unit which are connected to the inlet nipple and the outlet nipple, and a filtrate container for receiving filtrate passing through the filter unit during a filtering process, said filtrate container enclosing the filter unit, the filtrate container being a closed container and, in a filled state, the filtrate container establishes a counter-pressure over the filter unit so that the filtering process is interrupted, the filtrate container including a substantially rigid vessel for collecting filtrate and an air vent for allowing the escape of air from the vessel during a filtering process.