Mizuho Corporation

Nirec Corporation

Hiromi Sato

Haruyasu Katahira

Tetsuo Sumida

Ichiro Kitani

An endoscope includes a handle operation unit. The handle operation unit includes: an outer ring; a cam ring accommodated in the outer ring to rotate in accordance with rotation of the outer ring about a central axis and having a pair of guide holes; a pair of slide members accommodated in the respective guide holes and fixed to a force transmission member; and a support portion having a pair of slide grooves extending along a longitudinal direction of the endoscope, the support portion being accommodated in the cam ring to support the pair of slide members. The slide members slide in the respective slide grooves in accordance with the rotation of the outer ring. The field of view of the image-capturing unit is changed in accordance with sliding of the pair of slide members.

Growing community of inventors

Kochi, Japan

Hiromi Sato