The present invention provides an index that makes it possible to use, in an automatic analyzer, an approximate expression based on a theoretical chemical reaction formula derived from reaction process data, and automatically check for apparatus abnormalities, reagent deteriorations, and improper accuracy control during each continuous or individual inspection. The sealing device seals liquid supplied into a pressurizing chamber surrounded by the first member and the second member. According to the invention, a portion of an insulating film around a recessed channel is selectively removed to expose the surface and sides of the recessed channel. The proximal pin section has at least one bore running obliquely to the longitudinal axis, so that bone screws can be inserted through the bore into the head of the femur, or a screw can be inserted in the antegrade direction through the bore. The abutted portions of the two inner tubes form a rib such that the structure strength of the upper tube is improved. The judging circuit activates a second function when the computer peripheral device is adjusted to the second configuration such that the electrical connection between the first conducting contact and the second conducting contact is interrupted.