Methods and devices for use in tissue approximation and fixation are described herein. The present invention also discloses the corresponding base station, the corresponding mobile terminal and the carrier aggregation implement system composed of the base station and the mobile terminal. The control signal generator is enabled by the duration detecting unit so as to generate a control signal that enables the power-converting module to generate a drive voltage for driving the light-emitting component when the duration of the predetermined logic state is not longer than the reference time period. A Q-reduction circuit that is independent of the pulse generator circuit is configured to reduce oscillations in the oscillator circuit from the transmitted electrical pulse responsive to the control processor. The body portion of the delivery rail 20 has side portions having different areas, and an orifice portion wherein the end portion of the fuel tube 11 is connected to the side portion 20a having the largest area of the all side portions. The composite electrolyte membrane includes an electrolyte membrane containing a compound having a phosphoric acid-based material-containing functional group.