電子針灸是結合電子與傳統的針刺技術，利用脈衝波按摩穴道，疏通經脈氣血，增加腦內啡，抑制痛覺神經傳導，促進肌肉收縮，增進血液循環，紓解肩部酸痛。具有非侵入性、無副作用且操作簡單等優點，廣泛應用在日常生活的保健上。本研究對紓解肩部酸痛有良好效果的背部穴道（臑俞、巨骨、肩貞、肩髎、天髎、曲垣、天宗及秉風）設計一套背部穴道按摩系統，包含電子針灸裝置及針灸用護具兩部份。電子針灸裝置採用多通道輸出設計，能同時按摩多個穴道，可達到與傳統侵入式針灸相同的保健效果，電子針灸所選擇的脈衝波頻率為2Hz 到20Hz ，此頻段緩解慢性疼痛有良好的效果。針灸護具是以肩髎穴為基準對其他穴道進行定位，並配置電極片與電子針灸裝置連接，可避免使用者認穴錯誤，導致無法達到預期的保健效果。背部穴道按摩系統以單晶片微控制器和CPLD 為核心，整合振幅設定、頻率產生、針灸通道選擇電路及儲存電路，提供使用者儲存按摩設定，增加使用的方便性。搭配針灸用護具按摩背部穴道，提高肌肉力量及延展性，預防及紓解肩部酸痛的發生。本系統具有使用方便、操作簡單，且低成本等優點，應用在肩部酸痛患者上有明顯的舒緩效果。

Electronic acupuncture which combines electronics with traditional technique uses pulses to massage acupuncture points. Electronic acupuncture will help unclog meridians and qi and blood, release endorphin, relieve pain, facilitate muscle contraction, increase blood circulation, and mitigate shoulder pain. Non-invasive and easy to operate, it is widely applied to health care in daily life without side effects.This study designed a back body acupuncture points massage system which could reduce back pain effectively through acupuncture points (Naoshu, Jugu, Jianzhen, Jianliao, Tianliao, Quyuan, Tianzong, and Bingfeng) and which consisted of an electronic acupuncture device and an acupuncture gear. The electronic acupuncture device adopted a multiple channel output design which can massage acupuncture points and at the same time, achieve the health care result of conventional acupuncture. The pulse frequency selected by the electronic acupuncture was ranged from 2Hz to 20Hz. This band can effectively mitigate chronic pain. The acupuncture gear used Jianliao point as a standard to locate other acupuncture points. Then, electrodes were placed on each point and an electronic acupuncture device was connected to each point. Thus, the misidentification of the points can be avoided. If the user misidentifies the point, the expected health care results will not be achieved. With a chip microcontroller and CPLD as its core, this system integrated amplitude setting, frequency generation, acupuncture point selection circuit and storage circuit where the user can save massage setting to increase its convenience. Moreover, the acupuncture gear for massaging back points could increase muscles’ strength and extensibility and prevent and mitigate shoulder pain.The back body acupuncture massage system has advantages of user-friendly, inexpensive and easy to operate. The proposed system has shown its efficacy in mitigating user’s shoulder pain.