Closure devices especially adapted to ensure proper closure of biological specimen containers and biological specimen collection kits including the same

Abstract

Closure devices and kits allow closure of an open-ended container and provide a visible indication of closure torque. The closure device will include an outer cap defining a torque indicator window, an inner cap nested within the outer cap and a torque indicator disc positionally fixed to an upper surface of the inner cap and having at least two different indicia regions angularly adjacent to one another. The outer and inner caps are in mechanical interference fit with one another such that turning movement applied to the closure device allows the outer and inner caps to be turned as a unit and threadably coupled onto a threaded container until the inner cap is frictionally engaged with an edge of the container. Thereafter, continued turning movement of the outer cap relative to the inner cap causes angular displacement of the indicator window relative to the torque indicator to thereby provide a visible indication through the indicator window of an indicia region indicative of sufficient closure torque.