# US 10,478,044 B2 · Treatment instrument for endoscope and endoscope system

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- Number: US 10,478,044 B2
- Document ID: US10478044B2
- Status: Granted
- Kind: B2
- Application number: 14/822,142
- Filed: 2015-08-10
- Published: 2015-12-03
- Granted: 2019-11-19
- Earliest claimed: 2013-06-27
- Assignees: Olympus Corporation
- Applicants: Olympus Corporation
- Inventors: Yutaka Yanuma; Madoka Kiyokawa
- Web page: https://patentgrep.com/patent/US10478044B2

## CPC

- A61B 1/00087: {Tools (A61B17/00234 takes precedence)}
- A61B 1/00098: {Deflecting means for inserted tools}
- A61B 1/018: for receiving instruments
- A61B 17/32: Surgical cutting instruments ({A61B18/042 takes precedence; suture cutters A61B17/0467;} implements for ligaturing and cutting {A61B17/122, A61B17/12; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133})
- A61B 17/320016: {Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes (A61B10/0233, A61B17/29, A61B17/3207 take precedence)}
- A61B 17/32002: {with continuously rotating, oscillating or reciprocating cutting instruments}
- A61B 17/32056: {Surgical snare instruments (for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26)}
- A61B 17/3209: Incision instruments
- A61B 18/1492: {having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence)}
- A61B 90/361: {Image-producing devices, e.g. surgical cameras}
- A61B 2017/00526: {Methods of manufacturing}
- A61B 2017/00818: {Treatment of the gastro-intestinal system}
- A61B 2017/2929: {with a head rotatable about the longitudinal axis of the shaft}
- A61B 2017/320032: {Details of the rotating or oscillating shaft, e.g. using a flexible shaft}
- A61B 2018/00982: {combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes}
- A61B 2018/141: {Snare}
- A61B 2090/309: {using white LEDs}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A treatment instrument for an endoscope used in combination with an endoscope having a raising base at a distal end section of a channel, the treatment instrument for the endoscope includes a sheath section having flexibility; a treatment section installed closer to a distal end side than the sheath section; and a manipulation unit installed at a proximal end of the sheath section and configured to manipulate the treatment section, wherein the sheath section has a sheath main body; a sandwiched portion formed at a distal end side of the sheath main body and sandwiched between the raising base and an inner circumferential surface of the channel; and a torque transmission member configured to transmit a rotational torque input at the proximal end side by a user and turn the sheath main body about the axis.

## Claims

### Claim 1

A treatment instrument for an endoscope used in combination with an endoscope, the treatment instrument comprising:
a sheath having flexibility;
a treatment section disposed at a distal end of the sheath; and
a manipulation unit disposed at a proximal end of the sheath and configured to manipulate the treatment section,
wherein the sheath comprises:
a sheath main body having a lumen extending along a longitudinal axis of the sheath;
a transition section comprising an opening in communication with the lumen, the opening located at an intermediate section of the sheath main body;
a metal member fitted onto a distal portion of the sheath main body and the metal member covering a circumference of the sheath main body; and
a wire, wherein the wire extends through the lumen of the sheath main body, wherein a distal end of the wire is protruded from the opening of the transition section and the distal end of the wire is fixed to a proximal end portion of the metal member, and the wire configured to transmit rotational movement of a proximal end of the wire to the metal member; and
wherein the sheath main body comprises a first tube and a second tube, the second tube connected to a distal end of the first tube,
the first tube comprises the lumen and the opening,
the second tube is covered by the metal member,
the first tube has a first center,
the metal member has a second center, and
the first center is offset from the second center,
wherein the manipulation unit comprises:
a manipulation main body fixed to a proximal end of the sheath main body; and
a handle attached to a proximal end of the wire protruded from the manipulation main body and the handle being configured to input rotational torque to the wire,
wherein the wire comprises a plurality of individual wires, and
wherein the plurality of individual wires are only fixed to each other at each of a proximal end of the plurality of wires and a distal end of the plurality of wires.

### Claim 2 (depends on 1)

The treatment instrument for the endoscope according to claim 1, wherein the metal member extends around the circumference of the sheath main body.