A blood circulation assist system comprising an inflow cannula having a lumen and an insertion device configured to be received therein and to facilitate insertion of a portion of the inflow cannula into a heart chamber. The mixing system includes a fixed conduit connected to the top portion of the vessel extends into the vessel. The compressed absorbent member of the tampon has an inner region and an exterior surface. In another exemplary embodiment, a master controller is provided that includes a light sensor controller to poll a slave light sensor to generate a signal indicative of the ambient light around the LCD panel.