The invention provides a syringe for preventing anemia resulting from withdrawal of blood from a patient for analysis, the syringe including a cylindrical tube having a nozzle at its lower end to which a needle is attachable; a piston disposed within the tube and apiston handle protruding from the upper...http://www.google.fr/patents/US7195606?utm_source=gb-gplus-shareBrevet US7195606 - Syringe and a method for its utilization in analysis
Syringe and a method for its utilization in analysis
