US 2023/0404378 A1 · ENDOSCOPE AND ENDOSCOPE SYSTEM

Abstract

An endoscope includes an insertion portion that is inserted into a subject, and a suction channel that suctions a liquid along with a crushed calculus. The suction channel includes a channel main body, which is inserted in the insertion portion, and a small-diameter channel portion that is provided on a distal end side of the channel main body and has an inner diameter smaller than an inner diameter of the channel main body. The suction channel is configured to satisfy the relational expression R1/R2>1.27, where R1 represents the inner diameter of the channel main body and R2 represents the inner diameter of the small-diameter channel portion.

Claims12

Dependent claims

An endoscope, comprising:

an insertion portion configured to be inserted into a subject;
and
a suction channel that comprises
a channel main body inserted in the insertion portion, and
a small-diameter channel portion which is provided on a distal end side of the channel main body, includes a channel opening in a distal end face of the insertion portion, and has an inner diameter smaller than an inner diameter of the channel main body,
the suction channel being configured to suction, from the channel opening, a liquid along with a crushed calculus, wherein
the suction channel is configured to satisfy the following relational expression:
R1/R2>1.27,
where R1 represents an inner diameter of the channel main body and R2 represents an inner diameter of the small-diameter channel portion.

6 more elements

An endoscope system, comprising:

an endoscope that comprises
an insertion portion configured to be inserted into a subject, and
a suction channel that comprises
a channel main body inserted in the insertion portion, and
a small-diameter channel portion which is provided on a distal end side of the channel main body, includes a channel opening in a distal end face of the insertion portion, and has an inner diameter smaller than an inner diameter of the channel main body,
the suction channel being configured to suction, from the channel opening, a liquid along with a crushed calculus;
and
a calculus crushing device that comprises
a probe configured to protrude from the insertion portion and crush the calculus, and
a generator configured to supply energy to the probe, wherein
the suction channel is configured to satisfy the following relational expression:
R1/R2>1.27,
where R1 represents an inner diameter of the channel main body and R2 represents an inner diameter of the small-diameter channel portion.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/239,296Filed 29 Aug 2023

Priority

2 Mar 2021

Published

21 Dec 2023

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

A61B 1/015
Characterised by internal passages or accessories therefor: control of fluid supply or evacuation
A61B 1/00094
Characterised by distal tip features: suction openings
A61B 1/018
Characterised by internal passages or accessories therefor: for receiving instruments
A61B 1/307
Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g.…:…

Endoscope and endoscope system

Life of this patent

Endoscope and endoscope system

Life of this patent

Abstract

Claims12