Abstract: A closure for a container including an indicator mechanism to record the removal of the closure from the container and a child-resistant mechanism to resist the removal of the closure from the container by a child. A spring in the indicator mechanism urges the indicator mechanism toward the child-resistant mechanism to provide sufficient force to engage the child-resistant mechanism for the attachment of the closure to the container, but not sufficient force to engage the child-resistant mechanism for the removal of the closure from the container, so that an additional external force must be applied to engage the child-resistant mechanism for the removal of the closure from the cap. The additional, external force is also necessary to engage the indicator mechanism, so that the mechanism cannot be inadvertently advanced.

Abstract: A needle shield comprising an elongated tubular housing having a central bore, means at one end for detachably mounting the shield to the hub of a syringe assembly, and means defining an elongated generally cylindrical chamber in the end of the housing opposite the mounting means. An inner end communicates with the bore and an insert made of resilient impermeable pierceable material is snugly supported in the chamber. The chamber is of a diameter slightly greater than the diameter of the insert and includes a tapered wall portion at the inner end and has a section of smaller diameter than the insert to provide a tight generally hermetic sealing relation therewith. The wall of the chamber opposite the inner end is deformable to permit ease of assembly and deformation after insertion of the plug to firmly seat the plug in the chamber.