Valve controlled coronary profusion suction tube

Claim 1

IN COMBINATION WITH A FLEXIBLE CONDUIT ADAPTED TO BE CONNECTED TO A SOURCE OF SUCTION PRESSURE FOR INDUCING FLOW OF BLOOD THERETHROUGH, A VALVE CONTROLLED SUCTION DEVICE FOR SELECTIVELY APPLYING SUCTION PRESSURE TO A SOURCE OF FLUID TO INDUCE FLOW THEREOF INTO THE FLEXIBLE CONDUIT COMPRISING A VALVE BODY CONNECTED AT ONE END TO SAID FLEXIBLE CONDUIT, A REPLACEABLE TIP REMOVABLY CONNECTED TO THE OTHER END OF THE VALVE BODY, SAID VALVE BODY HAVING AN ELONGATED PASSAGE OF CONSTANT CROSS-SECTIONAL FLOW AREA EXTENDING BETWEEN SAID TIP AND THE FLEXIBLE CONDUIT, A VALVE MEMBER SLIDABLY MOUNTED BY SAID VALVE BODY INTERMEDIATE SAID ENDS THEREOF INTERSECTING THE ELONGATED PASSAGE, SAID VALVE MEMBER HAVING A VALVE PASSAGE EQUAL IN FLOW AREA TO SAID ELONGATED PASSAGE AND DISPOSED PARALLEL THERETO, VALVE ACTUATING MEANS CONNECTED TO SAID VALVE MEMBER FOR DISPLACING SAID VALVE MEMBER TO AN OPEN POSITION WITH SAID VALVE PASSAGE IN ALIGNMENT WITH THE ELONGATED PASSAGE TO ESTABLISH UNRESTRICTED FLUID COMMUNICATION BETWEEN THE TIP AND THE FLEXIBLE CONDUIT, AND VENT MEANS MOUNTED BY THE VALVE BODY BETWEEN THE VALVE MEMBER AND THE FLEXIBLE CONDUIT FOR SUPPLY OF AIR UNDER ATMOSPHERIC PRESSURE TO THE ELONGATED PASSAGE IN RESPONSE TO MOVEMENT OF THE VALVE MEMBER TO A CLOSED POSITION BLOCKING FLOW FROM THE TIP TO PREVENT COLLAPSE OF THE FLEXIBLE CONDUIT WHEREBY HEMOLYSIS OF BLOOD CONDUCTED THROUGH THE FLEXIBLE CONDUIT IS MINIMIZED.