A method and an apparatus for delivery of a therapeutic fluid to the body of a patient are provided. An LDD region of a TFT is formed to have a concentration gradient of an impurity element for controlling conductivity which becomes higher as the distance from a drain region decreases. These embedded circuits are tuned at production for best performance by observing the quality of the recovered analog signal. The ultrasonic wave generator may be activated during an exposure process to vary the distance between the lens system and the wafer, increasing the process window. The two clasping pieces have a round hole formed in a center straight portion and connected to the trumpet recessed mouth for the guide needle guided and sliding in the round hole to completely fit in the round hole for acquiring superior quality for transmitted signals. The battery compartment comprises an electrically isolating partial cover, which is disposed on a second side opposite the first side and designed to cover a base of the battery directed toward the second side in the direction of the removal side of the battery compartment.