US 12,245,750 B2
Insertion device and endoscope
Takuto Yoshinaga, Hino (JP); Tsukasa Ota, Hachioji (JP); and Wataru Matsuura, Fuchu (JP)
Assigned to OLYMPUS CORPORATION, Tokyo (JP)
Filed by OLYMPUS CORPORATION, Tokyo (JP)
Filed on Mar. 17, 2022, as Appl. No. 17/696,973.
Application 17/696,973 is a continuation of application No. PCT/JP2019/036414, filed on Sep. 17, 2019.
Prior Publication US 2022/0202283 A1, Jun. 30, 2022
Int. Cl. A61B 1/012 (2006.01); A61B 1/018 (2006.01)
CPC A61B 1/0125 (2013.01) [A61B 1/018 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An endoscope comprising:
an operation portion comprising:
a tube having a first channel and a communication hole on an outer circumferential surface of the tube, the communication hole communicating with the first channel;
a frame body having a second channel and a third channel, the tube being inserted into the second channel, the third channel communicating with the first channel via the communication hole; and
a closing body configured to close a proximal opening of the first channel, the closing body having a distal end surface positioned distally relative to a proximal end of the communication hole.