system operating parameters operating conditions patient conditions and the like may also be recorded and stored during interventions to preserve a record of the patient and intervention operational parameters high efficiency aspiration is important in the interventional catheter systems disclosed herein in certain embodiments fluid and associated particulates are aspirated from the intervention site at rates of at least 15 ml min of operating head run time and in many embodiments fluid and associated particulates are aspirated at rates of at least 25 ml min of operating head run time in exemplary interventional catheter systems the aspiration site may be more than a meter away from the controller 30 through an aspirate removal passageway located within the catheter system 32 and having a diameter of less than 0 10 inch for example between about 0 050 to 0 070 inch the distance that the aspirate travels between controller 30 and console unit 12 may be from about u00bd meter to several meters through an aspirate conduit that is between about 0 125 to about 1 0 inch in diameter the blood and debris being aspirated are relatively viscous fluids and achieving a relatively constant and high level of aspiration under these conditions is essential in one embodiment aspiration pump 16 comprises a multi lobed roller pump the rotation rates of multiple rollers or of a multi lobed rotating structure may be variable or selectable to control the.