US 2020/0390490 A1Published application

Treatment instrument and method of using treatment instrument

AssigneeOlympus Corporation

InventorsYuki KAWAGUCHI, Tomoyuki TAKASHINO, Akinori KOBAYASHI

Life of this patent

Estimating the term…

Loading patent…

Abstract

A treatment instrument includes a first jaw including a first electrode and a second jaw including a second electrode. The first jaw is openable and closable, together with the first electrode, with respect to the second jaw and the second electrode. The first electrode includes a projection projecting toward the second jaw. In a base of each of the jaws, an extending surface extends from an outer edge surface of a corresponding one of the electrodes toward a side away from the projection in a width direction so as to slope away from in an opening and closing direction of the first and second jaws.

Claims17

Dependent claims

A treatment instrument comprising:

a pair of jaws including a first jaw and a second jaw that are closable and openable with respect to each other and are arranged with a virtual plane interposed therebetween in a closing and opening direction, the virtual plane extending along a longitudinal direction and a width direction of the pair of jaws so as to be transverse to the closing and opening direction;
a first electrode that is provided on the first jaw and is openable and closable together with the first jaw with respect to the second jaw, the first electrode including a projection projecting toward the second jaw, and a first outer edge surface forming an outer edge of the first electrode in the width direction of the pair of jaws, and the first electrode being configured to incise tissue sandwiched between the pair of jaws by the projection;
a first base provided in the first jaw and attached to a back surface of the first electrode, the first base having a lower heat conduction rate than that of the first electrode, the first base including a first extending surface that extends from the first outer edge surface of the first electrode toward a side away from the projection in the width direction so as to slope away from the virtual plane in the closing and opening direction, and the first extending surface in the first base is configured to abut living tissue sandwiched between the pair of jaws;
a second electrode that is provided on the second jaw and is openable and closable together with the second jaw with respect to the first jaw, the second electrode including a second outer edge surface forming an outer edge of the second electrode in the width direction;
and
a second base provided in the second jaw and attached to a back surface of the second electrode, the second base having a lower heat conduction rate than that of the second electrode, the second base including a second extending surface that extends from the second outer edge surface of the second electrode toward a side away from the projection in the width direction so as to slope away from the virtual plane in the closing and opening direction, and the second extending surface in the second base is configured to abut living tissue sandwiched between the pair of jaws.

3 more elements

A treatment instrument comprising:

a pair of jaw assemblies including a first jaw assembly and a second jaw assembly relatively openable and closable with respect to the first jaw assembly, a virtual plane that:
(i) extends along a longitudinal direction and a width direction of the pair of jaw assemblies, (ii) intersects an opening and closing direction of the pair of jaw assemblies, and (iii) is located at a position where the first jaw assembly and the second jaw assembly meet each other in a closed state, wherein:
the first jaw assembly includes:
a first electrode including a projection projecting toward the second jaw assembly, and a first outer edge surface that forms an outer edge of the first electrode in the width direction of the pair of jaw assemblies, the first electrode being configured to incise living tissue sandwiched between the pair of jaw assemblies;
and
a first base including a first extending surface having a lower heat conduction rate than that of the first electrode, the first extending surface being configured to abut living tissue sandwiched between the pair of jaw assemblies;
the second jaw assembly includes:
a second electrode including a second outer edge surface that forms an outer edge of the second electrode in the width direction;
and
a second base including a second extending surface having a lower heat conduction rate than that of the second electrode, the second extending surface being configured to abut living tissue sandwiched between the pair of jaw assemblies;
the first extending surface extends from the first outer edge surface of the first electrode toward a side away from the projection in the width direction so as to slope away from the virtual surface in the opening and closing direction, and
the second extending surface extends from the second outer edge surface of the second electrode in the second base toward a side away from the projection in the width direction so as to slope away from the virtual surface in the opening and closing direction.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/003,406Filed 26 Aug 2020
Priority: 27 Feb 2018
Published: 17 Dec 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

A61B 18/1445
Probes having pivoting end effectors, e.g. forceps: at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
A61B 18/085
Probes or electrodes therefor: forceps, scissors
A61B 2017/00973
Surgical instruments, devices or methods: pedal-operated
A61B 2018/00083
Electrical conductivity: low, i.e. electrically insulating

Family

Application17/003,406Continuation
US 2020/0390490 A1This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key