Patent ID: 6746428
Filing Date: 2004-06-08
Classification: A61M

Abstract:
A dry heat sterilized hypodermic syringe barrel and needle cannula assembly comprising,an elongate barrel having a proximal end and a distal end with at least one chamber formed between the ends, said distal end culminating in a tip wherein said tip includes a bottom end in communication with the interior of said barrel and a tip end in communication with the exterior and a passageway in between said bottom end and said tip end for holding a needle cannula therein, a needle cannula affixed into said passageway with a bonding material that fills at least a portion of the interference length along said passageway to a bonding depth of at least about 2 millimeters and up to about 100% of said interference length, and a lubricant applied into the interior of said barrel and onto the exterior of said needle cannula prior to sterilization and heat cured into said interior of said barrel and onto said exterior of said needle cannula during dry heat sterilization, wherein said assembly is sterilized using dry heat at a temperature of at least about 250Â° C. and, following sterilization, said bonding material has no substantial coloration and said assembly has a needle pullout strength of at least about 30 newtons.