US 11,751,756 B2
Endoscope
Nobuaki Akui, Hino (JP)
Assigned to OLYMPUS CORPORATION, Tokyo (JP)
Filed by OLYMPUS CORPORATION, Tokyo (JP)
Filed on Jan. 15, 2021, as Appl. No. 17/150,422.
Application 17/150,422 is a continuation of application No. PCT/JP2018/031049, filed on Aug. 22, 2018.
Prior Publication US 2021/0161367 A1, Jun. 3, 2021
Int. Cl. A61B 1/00 (2006.01); A61B 1/005 (2006.01); A61B 1/06 (2006.01)
CPC A61B 1/0057 (2013.01) [A61B 1/0661 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An endoscope comprising:
an insertion section inserted into a subject;
an operation section disposed on a proximal end side of the insertion section;
a bending portion forming a portion of the insertion section, at least a portion of the bending portion being extendable and contractible in a longitudinal axis direction of the insertion section;
a longitudinal member configured to maintain a constant distance from the operation section to a distal end portion of the insertion section along the longitudinal axis of the insertion section; and
a flexible tube portion forming a portion of the insertion section, disposed on a proximal end side with respect to the bending portion, provided in a movable manner with respect to the operation section and the longitudinal member in the longitudinal axis direction, and configured to make the bending portion extend and contract with movement of the flexible tube portion with respect to the operation section in the longitudinal axis direction.