Patent ID: 6099500
Filing Date: 2000-08-08
Classification: A61M

Abstract:
A kit of components for assembling safety syringes, comprising:(a) two or more safety syringe modules having different diameters, each safety syringe module having:(1) a syringe barrel;(2) a safety plunger extending through a proximal end of the syringe barrel, the safety plunger having a plunger barrel, a sliding gasket formed along the perimeter of the plunger barrel near the distal end for sealing the plunger against the interior sidewalls of the syringe barrel, a sealing member covering an opening in the distal end of the plunger barrel, and a rigid member adjacent the sealing member; and(3) a connector formed in the distal end of the syringe barrel;(b) two or more safety needle cannula modules having:(1) a housing having a connector formed at a proximal end of the housing and a cannula passage formed through a distal end of the housing;(2) a needle cannula extending through the cannula passage;(3) a slidable piston flange coupled to the needle cannula;(4) a retaining member securing the slidable piston flange in the proximal end of the housing; and(5) a spring disposed within the housing to bias the slidable piston flange in the direction of the plunger opening from the distal end towards the proximal end;(c) wherein the connectors in the two or more safety syringe modules are sealably securable to the connectors in the two or more safety needle cannula modules; and(d) wherein securing any one of the two or more safety needle cannula modules to any one of the two or more safety syringe modules provides alignment of the rigid member of the plunger with the retaining member of the safety needle cannula module and alignment of the slideable piston flange with the sealing member of the plunger.