The present invention provides an insertion device and method for implanting a biosensor into a patient subject. A transmitter of a signal transmission system includes an interface-signal selector IFS, and a transfer programmer TP for issuing a control signal to instruct the selection from among the parallel interfaces. The inlet portion is configured to provide hydraulic fluid from a pressurized source to the clutch portion. The nanocatalyst particles are preferably bonded to the support material through an organic molecule, oligomer, or polymer having functional groups that can bind to both the nanocatalyst particles and to the support material. Now, a unit with a \u201cT\u201d shaped cross section and an enhanced strength is formed. The auxiliary wirings 103 are made of a material lower in resistance than that of the anodes 102, thereby being capable of reducing the wiring resistance of the anodes 102.