US 11,998,170 B2
Endoscope
Yasuhiko Morimoto, Kanagawa (JP); Satoru Okada, Kanagawa (JP); and Tsuneo Fukuzawa, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Sep. 19, 2022, as Appl. No. 17/947,187.
Application 17/947,187 is a continuation of application No. 16/808,407, filed on Mar. 4, 2020, granted, now 11,484,188.
Claims priority of application No. 2019-041825 (JP), filed on Mar. 7, 2019.
Prior Publication US 2023/0018672 A1, Jan. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 1/00 (2006.01); A61B 1/018 (2006.01)
CPC A61B 1/00098 (2013.01) [A61B 1/00087 (2013.01); A61B 1/018 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An endoscope comprising:
a distal-end-part body that is provided at a distal end of an insertion unit extending in a direction of a longitudinal axis,
wherein the distal-end-part body includes
an elevator-housing space-forming wall that forms an elevator-housing space opened in a direction perpendicular to the direction of the longitudinal axis,
a lead-out portion that forms a distal end of a treatment tool-insertion channel inserted into and disposed in the insertion unit and includes a treatment tool outlet opened into the elevator-housing space, and
an elevator that is provided in the elevator-housing space so as to be rotatable about a rotating shaft between a standing position and a fallen position and includes a guide surface guiding a treatment tool led out of the treatment tool outlet,
the elevator-housing space-forming wall includes an opening wall portion provided on an opening side of the elevator-housing space, and
an opposite wall portion, which is opposite to the guide surface in a case where the elevator is in the standing position, of the opening wall portion is made of a material harder than that of all other wall portions other than the opposite wall portion.