A wearable device assembly has a housing supporting a controller, display and indicator system thereon. Optionally the catalyst may contain K. Either an extension bit method or an extension code method is used to extend the length field so as to increase the number of length values available for coding of the mini cell sizes. After the first and second secure sessions have been established, the intermediary provides intermediation services between the server and the client in an intermediated secure session. The distinctive colorings of the first and second occlusion fluid conduits remain visible within an operative field during an endarterectomy procedure and allow a user to distinguish the first occlusion assembly from the second occlusion assembly during the procedure.