Patent ID: 7014622
Filing Date: 2006-03-21
Classification: A61M

Abstract:
1. A safety syringe comprising: a) an interchangeable needle; b) an elongated barrel having first and second ends, the interchangeable needle attached to a threaded first end of a needle hub; c) a plunger sized and shaped to be received in the second end of the barrel and to be moveable therein; d) a moveable base adapted to releasably constrain a needle hub, said moveable base adapted for slideable movement of said base and said needle hub within an interior of said elongated barrel and in the direction of said first end of said barrel; e) a spring, at least partially compressed, said spring positioned entirely within the barrel and surrounding a portion of said needle hub between a base of said needle hub and said threaded first end of said needle hub, said spring adapted to bias the interchangeable needle within the barrel; and f) at least one support member having a first end and a second end, said support member positioned within said barrel, said first end of said support member engaging said base and a second end engaging an edge of a needle assembly, said needle assembly edge positioned along an interior wall of said barrel, said at least one support member further surrounding an axial portion of each of said needle hub and said partially compressed spring;