Methods and apparatus for treating hemorrhoids and similar ailments are disclosed in which one or more piece of material are used to separate swollen, inflamed tissue from non-swollen tissue, material may be included within an undergarment that may be worn for the treatment of ailments such as hemorrhoids or an episiotomy. The ignition module includes a microprocessor for generating a control signal to an ignition coil and switching ON and OFF the primary current therein. The first bore end can include a substantially circular cross-sectional profile. According to this method, waveform degradation due to dispersion can be compensated with high accuracy in consideration of dispersion and dispersion slope.