US Patent 10166347 Closure assembly for a medical device

A closure assembly for a medical device structured to provide an indication of tampering comprising an outer sleeve including an indicator window formed therein. An end cap is connected to the sleeve and movable there with and includes an indicator shield attached thereto. A tip cap is movably retained within the sleeve and includes an indicator member movable with the tip cap and detachable therefrom. The indicator window is disposed in visual alignment with either the indicator member or the indicator shield dependent on a state of use of the closure assembly.