| 摘要 |
PURPOSE:To facilitate the confirmation of a measuring region, by arranging the center axis of an NMR measuring coil so as to become almost parallel to the optical axis of an observation optical system. CONSTITUTION:A channel tube forming a channel 30 is connected to a channel through-hole 24 provided to the leading end part 13 of an endoscope 1 on the rear end side thereof and an NMR probe 41 is inserted through said channel tube. The probe 41 is constituted by connecting an NMR measuring coil 45 to the leading end of the signal cable 42 such as the coaxial cable inserted through the channel 30. The coil 45 has an outer diameter almost equal to that of the leading end part 13 but is formed into an one-winding loop shape slightly smaller than the leading end part in an outer diameter and the center axis of the coil 45 almost coincides with that of an insert part 2 and almost parallel to the optical axis of an objective lens system 27. By protruding the coil 45 at the time of the measurement of NMR, the coil 45 enters the visual field 50 of the observation optical system of the endoscope 1 and the detecting direction of the coil 45 almost coincides with the optical axis direction of the observation optical system. Therefore, a measuring region can be easily confirmed. |
