A thin projection type image display device with a low chin height includes a cabinet, a screen, a projection optical system, an optical path changing unit, and a reflecting unit. During the crushing process, a portion of the headrest guide tube is bulged into a notch in the hole in the seat frame to prevent the guide tube from rotating with respect to the seat frame. The base seat is composed of a locating block and a support arm. This device can be jointly utilized for electroporation and iontophoretic drug delivery through the skin and mucosal membrane. At the receiver, the cells from each DSL PHY are re-combined in the appropriate order to recreate the original ATM cell stream, which is then passed to the ATM layer. The device provided having at two slidably engaged components that permit ease of insertion into the void created in the annulus fibrosis of the damaged disc.