b' The vacuum chamber will warm slightly indicating pump is working. After approximately 1 to 2 minutes the dressing should start to visibly tighten around dressing pad covering incision. *NOTE: If external staples were used to close incision, you may see imprint of staples in the tightening dressing. The blue sealing flap will depress into slot in the top of vacuum chamber resulting in visible depression of white grid lines. Convenience Clip and Safety LanyardTheNP SIMS kit includes an optional metal clip with rubber boots and a safety lanyard with a white breakaway clip and a metal split ring.The clip can be looped around semi-circle bail at either end of the chamber or removed entirely. When using the clip, ensure that theNP SIMS tubing connecting the chamber to the dressing hangs freely to avoid snagging. The lanyard can be worn around the neck to attach the chamber, and if aggressively pulled, the breakaway clip will detach for safety. Reattach the lanyard by snapping the clip halves together. Use with caution.14NP SIMS Health Care Practitioner Instructions for Use (IFU)'