There is disclosed a display device using a color wheel having a color filter Cw, in addition to normal color filters corresponding to the three primary colors. The conveying device includes at least one endless conveying element for holding and guiding the products during a cutting operation. The fluid delivery manifold extends between a proximal end fluidly coupled to the fluid supply and a distal end having at least one aperture for delivering the therapeutic solution to the defect adjacent the articulating surface of the first tissue site.