Abstract: A flexible tubing for an intravenous fluid delivery set including an elongate tubing member formed of aliphatic polyether polyurethane. The set may include connectors to a container and an intravenous needle, and additional connectors for components placed in line with the tubing, with hollow posts on the connectors, with the tubing ends adapted to friction fit over the posts. The posts may have outer diameters which are tapered from a first diameter to a second diameter, where the inner diameter of the tubing ends are less than the second diameter. A method of delivering therapeutic fluid is also shown including providing the delivery set, providing a flow path by forcing tubing ends over connector posts in an in-line arrangement, and then controlling the flow of the therapeutic fluid between the container and the intravenous needle through the fluid flow path.

Abstract: A closure system for molded plastic containers having a threaded container neck, the closure system comprising a screw cap having internal threading constructed for threaded engagement with the threaded container neck, a gasket, means for retaining the gasket on the screw cap and an abutment surface integrally formed in and extending substantially radially from the container neck for sealably contacting the gasket, wherein the screw cap and the abutment surface are constructed so that downward axial rotation of the screw cap is effective to seal the gasket against the abutment surface.

Abstract: A closure system for molded plastic containers having a threaded container neck, the closure system comprising a screw cap having internal threading constructed for threaded engagement with the threaded container neck, a gasket, means for retaining the gasket on the screw cap and an abutment surface integrally formed in and extending substantially radially from the container neck for sealably contacting the gasket, wherein the screw cap and the abutment surface are constructed so that downward axial rotation of the screw cap is effective to seal the gasket against the abutment surface.