A method for calculating a meal bolus in an insulin pump and an insulin pump are disclosed. In this invention, because the addition of the impurity is conducted by utilizing the principal of channeling, the impurity can be added with a small amount of scattering suppressing damage on the surface of the silicon substrate. The substance content data includes at least one of: a blood alcohol level and a narcotics presence. The electrode is energized through connection with a power source. In one embodiment, the delay line is used to introduce delay compensation into a circuit design at the top level of the circuit design. A value which determines this time interval is transmitted by the network to the mobile terminal.