Exsanguination valve

Claim 1

AN EXSANGUINATION VALVE FOR JOINING TO THE BLOOD STREAM OF A TEST SUBJECT BY MEANS OF A CATHETER TUBE AND PERMITTING THE REPEATED WITHDRAWAL OF BLOOD SAMPLES WITH A SYRINGE ATTACHABLE TO AND DETACHABLE FROM SAID EXSANGUINATION VALVE COMPRISING: A HOUSING HAVING A CAVITY OPEN AT ONE END AND AN INLET COMMUNICATING WITH THE CAVITY IN SAID HOUSING AND JOINABLE TO SAID CATHETER TUBE, A VALVE SEAT MEMBER JOINED TO SAID HOUSING AND CLOSING THE OPEN END OF THE CAVITY IN SAID HOUSING AND HAVING A CAVITY OPEN AT ONE END AND AT THE OPPOSITE END OF SAID CAVITY HAVING A CLOSED END WALL WITH A CIRCULAR PASSAGE THERETHROUGH ADJACENT TO THE CAVITY IN SAID HOUSING, AND A VALVE PLUG HAVING A CAVITY OPEN AT THE OUTER END AND EXTENDING INTO AN ELONGATED CYLINDRICAL CLOSED END TUBE PASSING THROUGH AND AXIALLY MOVABLE IN THE CIRCULAR PASSAGE IN SAID VALVE SEAT MEMBER WITH THE CLOSED END EXTENDING INTO THE CAVITY IN SAID HOUSING AND HAVING AT LEAST ONE PORT IN THE CYLINDRICAL TUBE OF SAID VALVE PLUG AXIALLY LOCATED TO BE WITHIN THE CIRCULAR PASSAGE THROUGH THE CLOSED END WALL OF SAID VALVE SEAT MEMBER WHEN SAID VALVE IS IN THE NORMALLY CLOSED POSITION AND FURTHER HAVING AN ADAPTER AT THE OPEN OUTER END OF SAID VALVE PLUG FOR REMOVABLY JOINING TO SAID SYRINGE PERMITTING SAID VALVE PLUG TO BE AXIALLY MOVED TO BRING THE PORTS IN SAID VALVE PLUG IN COMMUNICATION WITH THE CAVITY IN SAID HOUSING PERMITTING SAID SYRINGE TO WITHDRAW BLOOD THROUGH SAID VALVE AND CATHETER TUBE FROM SAID TEST SUBJECT.