Methods Biomechanics,human body engineering and electronics technique were used.It could heat and lead in the intermittent type.The control electric circuit was composed by 555 IC.

• 方法:把生物力学、人体工程学、电子技术相结合,以间歇式加热、间歇式自动充放气牵引的方式,由555芯片构成无稳态间歇振荡电路。