Test production and utility of an ESD assistive device (transparent hood with mucosa gripping channel attached) (for animal studies and clinical use)

摘要

In pursuit of shortoning of procedure time and a safty and convenient improvement in endoscopic submucosal dissection (ESD), we experimentally produced a transparent hood with a mucosa gripping channel attached. Its utility was confirmed in animal experiments using dogs, and we recognized similar utility in clinical application. The use of this assistive device has the following advantages. 1 By lifting the separated mucosa, then reversing and pressing it backword, the mucosa-stripped plane can be observed under direct vision, and hemostasis and blood vessel processing are made easy. 2 Reliable counter-traction can be applied to the submucosal tissue of the stripped plane, and separation time could be shortened. 3 This method of gripping the excised mucosa and attaching the hood to the opening side of the excised reduces the effects of respiration and pulsation, keeps the distance of the separated part and instrument constant, and enables safe separation procedure.