An analysis device comprises a body having a reaction chamber for chemically reacting a sample, a separation region for separating components of the sample, and a transition region connecting the reaction chamber to the separation region. The case includes a bottom portion attached with the transformer body, a side wall surrounding the bottom portion, and an opening provided opposite to the bottom portion, the transformer body being housed and the mold resin being filled through the opening. The main body is configured in either an L-shape or straight-through configuration. Accordingly, any specific mechanism for only the cleaning purpose is not necessary and the construction of the apparatus can be made simple. The fusion cages may be inserted after distracting the disc space with the distractor assembly.