2000 Volume 56 Issue 2 Pages 42-43
We developed a transparent hood on tip of colonoscope to put it into clinical use. A number of physician have reported usefulness of hood such as shortening of time required during colonoscopy, reducing dead-angle positions during observation as well as enabling to get the position during endscopic surgery. The disadvantage of the ordinary plastic hood is that the field of vision is obstructed by itself and irrigated fluid collected in hood. We made the hood with oblique front shape, side-holes and external flame of the hood tip. The oblique shape lowered the obstruction of visual field in relation to the position of CCD lens in colonoscope. Side-holes of hood drained irrigated fluid in hood and decreased the obstruction of visual field. The external flame of tip worked easy to hook the colon fold and decreased the blind field. We conclude that colonoscope wearing a transparent hood is very useful procedure not only a diagnostic procedure, but also a therapeutic measure.
