| 摘要 |
A mouthpiece for use in upper endoscopy, including a main body of generally tubular shape internally providing a passage for receiving an endoscopic insertion tube and having a teeth support portion on the outer periphery of the passage portion. The internal passage in the main body is provided with a partition plate, thereby dividing the internal passage into an upper passage for introduction of an endoscopic insertion tube and a lower passage adapted to receive and hold a patient's tongue in such a way to restrict its movements.
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