A needle device which is designed for use with subcutaneous access catheter assemblies of the type having an interior chamber in which a needle provides fluid access thereto. The needle device of the invention comprises a needle having a vertical shank which is capable of puncturing the skin of a patient...http://www.google.es/patents/US4710176?utm_source=gb-gplus-sharePatente US4710176 - Needle device for use with subcutaneous catheter assemblies
Needle device for use with subcutaneous catheter assemblies
