Bending operation mechanism of insertion device

• Main Authors: YOSHINAGA TAKUTO, MATSUURA WATARU, SUZUKI MOTOHIKO, OTA TSUKASA, MITSUHASHI KEITA
• Format: Patent
• Language: Chinese; English
• Published: 15.07.2022
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

This bending operation mechanism for an insertion device is provided with: a bending operation member (30) which is supported so as to be rotatable about a rotation axis (31) and which bends a bending section provided in an insertion section; a wire pulling member (40) which is supported so as to rotate around the rotation axis together with the rotation of the bending operation member and has an outer circumference (40a) having a predetermined radius; a lock operation member (50) supported so as to be rotatable about a rotation axis; a cam member (60) provided integrally with the lock operation member, disposed on the outside of the wire traction member in the radial direction of the rotating shaft, and having a cam surface facing the center of the rotating shaft; and a brake member (70) that is disposed between the outer periphery and the cam surface, that has a cam driven surface that is slidable with respect to the cam surface, and that has an abutment surface that is capable of abutting against the outer