A needle assembly has an elongate hollow handle with a proximal end with provisions for attaching a fluid handling device and a distal end with an opening. The assembly has a needle with a distal point, a proximal end and an open passageway. The assembly also has an elongate substantially transparent...http://www.google.es/patents/US5685855?utm_source=gb-gplus-sharePatente US5685855 - Protected needle catheter placement device with sampling provisions and method for its use
Protected needle catheter placement device with sampling provisions and ...
