Patent ID: 6706019
Filing Date: 2004-03-16
Classification: A61M,Y10S

Abstract:
A hypodermic syringe including a housing, a plunger, a needle carrier with a needle mounted thereto positionable during assembly of the syringe within the housing with the needle extending therefrom, sealing means for defining a seal carrier and the housing, a sheath mounted to the needle carrier and surrounding the needle, and stored energy means, wherein the plunger and stored energy means are configured such that when the syringe is used and the plunger reaches the needle carrier, the plunger becomes attached to the needle carrier and the stored energy in the stored energy means is released to retract the needle carrier and the needle into the housing, the housing being configured such that the seal is formed between the needle carrier and the housing during assembly and such that the needle carrier with the needle mounted thereto is positionable during assembly of the syringe through the housing with the needle pre-sheathed.