Patent ID: 7520489
Filing Date: 2009-04-21
Classification: A61M,Y10T

Abstract:
1. A needlefree access device comprising: a) a housing having an inlet, a base comprising an outlet, and a main body portion having a generally cylindrical inside surface between the inlet and the base; b) a valve member actuatable between an open position and a closed position, the valve member comprising a piston section that includes a wiper seal adjacent the inlet when the valve member is closed, wherein in the closed position the valve member prevents flow between the inlet and the outlet, and wherein the piston section further comprises an opening in the top thereof, and a flow channel beneath and connected to the opening and extending radially to the outside of the piston section; and c) a central body within the main body portion of the housing, the central body having a helical shape on its outer surface, the central body fitting against the inside of the cylindrical surface when the valve member is in its open position; d) the helical shape defining a helical flow path through the main body portion of the housing when the valve member is in an open position.