US 12,593,959 B2Granted

Endoscope treatment tool

AssigneeOlympus Medical Systems Corp.

InventorsHiromasa Kato, Yusuke Shiota, Kotaro Yamada

Life of this patent

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Abstract

An endoscope treatment tool includes a sheath and an incision device. The sheath includes a distal end portion having a first channel. The first channel extends internal to the distal end portion between a distal opening at a distal end surface of the distal end portion and a proximal opening at a main flow chamber. The incision device is inserted in the first channel and includes a second channel extending between a distal end of the incision device and a proximal end of the incision device. The endoscope treatment tool is switchable between a first mode and a second mode. In the first mode, a first path for fluid is formed between the main flow chamber and the first channel. In the second mode, a second path for fluid is formed between the main flow chamber and the second channel.

Claims13

Dependent claims

An endoscope treatment tool comprising:

a sheath including a distal end portion having a first channel, wherein the sheath includes a main flow chamber extending proximally more than the distal end portion;
and
an incision device inserted in the first channel, wherein the incision device is translatable in the first channel and wherein the incision device includes a second channel extending along a longitudinal axis of the incision device,
wherein the endoscope treatment tool is switchable between a first mode and a second mode,
wherein the endoscope treatment tool is in the first mode when the incision device is in a first position and the endoscope treatment tool is in the second mode when the incision device is in a second position, and
wherein, in the first mode, the first channel is in fluid communication with the main flow chamber and the second channel is closed off from the main flow chamber, and, in the second mode, the second channel is in fluid communication with the main flow chamber and the first channel is closed off from the main flow chamber.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/974,178Filed 26 Oct 2022 · us provisional application
Priority: 29 Oct 2021
Published: US 2023/0133233 A14 May 2023
Granted: 7 Apr 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

A61B 1/00064
Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g.…:…
A61B 1/018
Characterised by internal passages or accessories therefor: for receiving instruments
A61B 18/14
By passing a current through the tissue to be heated, e.g. high-frequency current: probes or electrodes therefor
A61B 2017/00296
Mounted on or guided by flexible, e.g. catheter-like, means: mounted on an endoscope