| 摘要 |
A gastroscopic apparatus for inspecting a body channel is described. The apparatus comprises an insertion tube, an operating handle, a dispenser, which is detachably coupled to the insertion tube, a covering sleeve, which is retained within the dispenser, and a mouthpiece, which is provided with a means for arresting the dispenser within the mouthpiece. Upon arresting the dispenser within the mouthpiece and advancement of the insertion tube within the body channel, the covering sleeve extends from the dispenser and deploys around the insertion tube to protect from contamination that portion of the insertion tube, which had passed the dispenser.
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