The heart of the system is the MediSieve Filter and Magnet. The MediSieve Filter is a single-use, disposable magnetic filter which captures and retains magnetic components; the same filter can be used for all applications. The Filter has been designed and tested in conjunction with the Beads and Magnet to enable rapid filtration of large quantities of blood with only a small volume outside the patient’s body at any given time. At typical flow rates, a patient’s total blood volume can be filtered in less than an hour which will allow most treatments to be performed in 2-3 hours. The key design elements of the Filter that maximise magnetic capture and filtration are patent pending.