| 摘要 |
<p>The endoscope of the invention comprises an insert (2) having a curved section (12) curveable in a plurality of directions, and a front end (11) disposed on the front end of the curved section (12) and having an objective optical system (26) disposed thereon and a treating tool insertion channel (29) formed therein. The treating tool insertion channel (29) extends through the insert and has an opening disposed opposite to the curve direction with respect to the position where an observation optical system is installed when the curved section is curved in the curve direction.</p> |
