US 12,290,234 B2
Endoscope distal end for treatment tools, observation and fluid supply
Yuta Kawamoto, Kanagawa (JP)
Assigned to FUJIFILM Corporation, Tokyo (JP)
Filed by FUJIFILM Corporation, Tokyo (JP)
Filed on Mar. 28, 2022, as Appl. No. 17/705,393.
Claims priority of application No. 2021-055278 (JP), filed on Mar. 29, 2021.
Prior Publication US 2022/0304554 A1, Sep. 29, 2022
Int. Cl. A61B 1/00 (2006.01); A61B 1/018 (2006.01); A61B 1/07 (2006.01)
CPC A61B 1/00091 (2013.01) [A61B 1/00045 (2013.01); A61B 1/00087 (2013.01); A61B 1/018 (2013.01); A61B 1/07 (2013.01); A61B 2217/005 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An endoscope comprising:
an observation window that is provided on a distal end surface of an insertion unit bendable in an up/down direction and a left/right direction and is used to observe an inside of an object to be examined;
a first treatment tool outlet port which is provided on the distal end surface and out of which a first treatment tool is capable of being led;
a second treatment tool outlet port which is provided on the distal end surface and out of which a second treatment tool is capable of being led; and
a front water supply port that is provided on the distal end surface and jets liquid to a portion to be observed in the object to be examined,
a first treatment tool channel, having a proximal end of the first treatment tool channel configured as a first treatment tool inlet port, and a distal end of the first treatment tool channel configured as the first treatment tool outlet port,
wherein in a case where an axis, which is parallel to the left/right direction, of two axes, which pass through a center of the distal end surface and are orthogonal to each other, is defined as a first axis and an axis thereof parallel to the up/down direction is defined as a second axis as the distal end surface is viewed from a front,
the observation window is disposed across the second axis and above the first axis,
the first treatment tool outlet port is disposed across the second axis and below the first axis and a center of the first treatment tool outlet port is on a right side of the second axis,
the second treatment tool outlet port is disposed on a left side of the second axis and across the first axis and below a first line that passes through a center of the observation window and the first line is parallel to the first axis, and
a center of the front water supply port is disposed below the first line and on a side opposite to the second treatment tool outlet port with respect to a second line that passes through the center of the first treatment tool outlet port and the second line is parallel to the second axis,
wherein the first treatment tool outlet port and the front water supply port are fixed to the distal end surface,
wherein the center of the first treatment tool outlet port and the center of the front water supply port are fixed with respect to each other.