Patent ID: 11925314
Assignee: FUJIFILM CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An ultrasound endoscope comprising:
a distal-end-part body that is provided on a distal end side of an insertion unit of an endoscope in a direction of a longitudinal axis;
a first opening portion that is provided in the distal-end-part body;
a second opening portion that is provided in the distal-end-part body;
a first pipe that is connected to the first opening portion; and
a second pipe that is connected to the second opening portion,
wherein the first pipe includes a first main pipe portion of which one end is connected to the first opening portion, and a first branch pipe portion that is branched from a first branch position distant from the one end of the first main pipe portion,
the first main pipe portion is a linear pipe line portion extending in a direction of a first pipe axis,
the first branch pipe portion includes a first straight pipe portion that is offset from the first main pipe portion in a direction orthogonal to the direction of the first pipe axis by a first offset distance and extends in the direction of the first pipe axis, and a first connecting pipe portion that connects the first main pipe portion to the first straight pipe portion,
the second pipe includes a second main pipe portion of which one end is connected to the second opening portion, and a second branch pipe portion that is branched from a second branch position distant from the one end of the second main pipe portion,
wherein the second main pipe portion is inclined toward the first main pipe portion along longitudinal, width, and radial directions of the distal-end-part body,
the second main pipe portion includes a second straight pipe portion, a third straight pipe portion, and a second connecting pipe portion, wherein one end of the second straight pipe portion is connected to the second opening portion and which extends in a direction of a second pipe axis, and the third straight pipe portion is connected to the second straight pipe portion via the second connecting pipe portion and offset from the second straight pipe portion in a direction orthogonal to the direction of the second pipe axis by a second offset distance and extends in the direction of the second pipe axis, and the second connecting pipe portion is connected between the second straight pipe portion and the third straight pipe portion,
the second branch pipe portion is a linear pipe line portion that is connected to the second straight pipe portion via the second connecting pipe portion and the second branch position and offset from the second straight pipe portion in the direction orthogonal to the direction of the second pipe axis by a third offset distance shorter than the second offset distance and extends in the direction of the second pipe axis,
one end of the second branch pipe portion is connected to the second connecting pipe portion,
a pipe line portion of the first main pipe portion, which is closer to the first opening portion than the first branch position, and the second straight pipe portion are arranged adjacent to each other in a direction orthogonal to the direction of the longitudinal axis, and
the first branch pipe portion and the second straight pipe portion are arranged at positions overlapping with each other in a case where the first pipe and the second pipe are projected onto a plane perpendicular to the direction of the longitudinal axis.