- 學位論文
經皮電刺激器 之數位類比轉換和輸出電路設計
Digital Analog Converter and Output Drive Design For Transcutaneous Electro Nerve Stimulator (TENS)
摘要
中文摘要 由於經皮電刺激器具有減輕疼痛、肌肉復健、消除疲勞等臨床使用效果，且使用方式與配件不斷有新的突破、尤其在材料、內部輸出程式等都有大變革，因此在復健及疼痛減輕之應用上頗受重視。 一般電刺激器用在減輕疼痛時它的設定參數大致如下: 波形寬度(刺激時): 10-1000 microseconds。 波形頻率: 80-100 impulses per second (Hz); 0.5-10 Hz 當刺激設定為High 時。 論文主要目的是一新型皮膚貼片式微電刺激器輸出電流源雙向(biphasic)輸出設計及電流鏡型式之數位類比轉換器設計，採用可程式方式調整刺激電流之強度透過電流鏡型式之數位類比轉換器控制刺激強度及輸出刺激波形之解碼，並且捨棄皮膚表面刺激器所需的變壓器，改以新型的增壓電路 (Charge Pump Circuit)代之，整個電路經由世界先進 0.35um 高壓13.5V 製程參數進行模擬，期能將電刺激器與電極片整合於一起，並黏貼於皮膚表面或穴道來進行電刺激，以完成新型之貼片式電刺激器。 關鍵字：1、經皮電刺激器 2、貼片式電刺激器 3、數位類比轉換器
並列摘要
Abstract Transcutaneous electrical nerve stimulation (TENS) currently is one of the most commonly used forms of electroanalgesia. Hundreds of clinical reports exist concerning the use of TENS for various types of conditions such as low back pain (LBP), myofascial and arthritic pain, sympathetically mediated pain, bladder incontinence, neurogenic pain, visceral pain, and postsurgical pain. Because many of these studies were uncontrolled, there has been ongoing debate about the degree to which TENS is more effective than placebo in reducing pain. The usual settings for the stimulus parameters used clinically are the following: Amplitude - Current at low intensity, comfortable level, just above threshold Pulse width (duration) - 10-1000 microseconds Pulse rate (frequency) - 80-100 impulses per second (Hz); 0.5-10 Hz when stimulus intensity is set high In this paper, we present a new type of TENS biphasic current output drive design and current mirror type of (digital analog converter, DAC) DAC. We adopt programmable methods to adjust intension of stimulated current and as well as using a new charge-pump circuit instead of a transformer. Whole circuits were processed through VIS 0.35um High Voltage process to achieve chips. Chips could be integrated with electrical stimulators to form a novel technical product, named stimulated paste. Keywords: TENS, Stimulated Paste, DAC