Abstract: A blood extraction device comprises an evacuatable extraction tube (11) which is open at one end and onto which a closure cap (12) can be detachably fitted which carries a cannula cone (14) which projects forwardly parallel to the tube axis (13) and extends concentrically into a cylindrical extenion (15) having a smaller diameter than the extraction tube (11) and constructed as rearwardly open tube and which consists of a rearwardly open stiff sleeve (20) closed at the front except for a needle passage opening (19) and a counter piece (21) adapted to be fitted sealingly onto the cannular cone (14) and having a passage (22).