- 學位論文
無線WiFi可拋棄式電子內視鏡之研製
Research and development of WiFi wireless disposable electronic endoscope
摘要
本研究主旨在製作一無線WiFi電子式內視鏡，並且應用於影像輔助內視鏡外科手術與未來的單孔內視鏡及自然口手術上。在胸腔鏡手術中，醫生將內視鏡通過胸腔上的幾個小切口拍攝之影像傳送到電視螢幕上作為手術視野。本研究使用無線傳輸可改善目前醫療用內視鏡設備因體積龐大導致缺乏便利性，且造價昂貴使之無法當作戰地中使用的醫療設備，因此本研究之電子式內視鏡可望到體積小且高便利性的優點。其造價便宜更可做為一次性手術器械，以避免器具重複使用感染的風險。 本研究之內視鏡主要分成前端攝影機及後端無線傳輸部分，前端部分為可拋式組件，包含鏡頭、金屬管、電子接頭；後端部分為電源、影像轉換器、無線傳輸晶片，本研究將這些電子零件設計為電子式內視鏡。為了證實自製電子式內視鏡可實際應用於胸腔手術中，我們便在模擬體內之暗箱中針對溫度、照度、影像色彩品質檢測分別進行實驗測試；無線訊號量測方面因影響無線訊號之干擾很多，為證實自製內視鏡可自由使用於手術室內空間，因此無線訊號之量測也為此研究之重點之一，量測WiFi無線訊號在室內外之訊號強度，我們便使用WiFi檢測軟體Vistumbler量測無線訊號在常見之干擾源上之訊號強度數據，證明WiFi傳輸訊號運用在電子式內視鏡之可行性。
並列摘要
In recent decades, the application of endoscopic surgery had been widely accepted. Conventional endoscope system has some key components, including the rigid endoscope, a bundle of light-emitting optic fibers and a set of image sensors in the hand-help part. Along with these elements, there is a video system for processing and viewing of the video in body cavity. Signal transmission was based on cables in conventional design of endoscope. In the study, we attempted to replace of role of cable-based image transmission with a set of wireless apparatus. In the development of wireless transmission technology, the quality and speed also improved significantly from IEEE 802.11b, 802.11g, 802.11a to latest 802.11n. In order to improve both the quality and speed, the techniques of MIMO-OFDN had been implicated in wireless device. In the present study, we used 802.11n transmission chip in our preliminary design. The size of the wireless ENFE in our design can be minimized because we used mini-chip for image processing and for signal transmission. Therefore, the bulky size of conventional endoscope is no longer required. Additional benefits included lower cost and the front endoscope may be designed as a disposable part. The efficacy and practical benefits were tested in both off-table study and in animal study. We tested the quality of video transmission, the influence factors, the acceptability of surgeons.