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Characteristics of the Pharmaseal continuous flushing device

Pharmaseal continuous flushing devices were tested with regard to flow characteristics into simulated arterial and venous pressure systems. Two driving pressures were used and it was found that variation in driving pressure made a significant difference to the flow, while arterial or venous pressure made no significant difference. The flow devices had a wide variation although they were all of the same type. The fluid volume delivered was in the region of 100 ml in a 24‐hour period.