TREATMENT DEVICE AND MEDICAL SYSTEM

• US 20160242845A1
• Filed: 05/05/2016
• Published: 08/25/2016
• Est. Priority Date: 11/08/2013
• Status: Abandoned Application

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: MATSUI, Akira
• Application Number:
  US15/147,049
• Publication Number:
  US 20160242845A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 1/00009 of image signals during a use of endoscope
• CPC Class Codes: A61B 1/00029 externally powered, e.g. wireless
• CPC Class Codes: A61B 1/0051 with controlled bending of insertion part
• CPC Class Codes: A61B 1/018 for receiving instruments
• CPC Class Codes: A61B 1/045 Control thereof
• CPC Class Codes: A61B 1/273 for the upper alimentary canal, e.g. oesophagoscopes, gastroscopes
• CPC Class Codes: A61B 18/12 by passing a current through the tissue to be heated, e.g. high-frequency current
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2018/00083 low, i.e. electrically insulating
• CPC Class Codes: A61B 2018/00595 Cauterization
• CPC Class Codes: A61B 2018/00875 Resistance or impedance

Abstract

A treatment device includes: an insertion portion inserted into a channel of an endoscope; a treatment section configured to perform treatment according to power supplied from a power source; a power reception electrode installed along an outer circumferential face of the insertion portion and configured to form a capacitor by capacitively coupling to a power transmission electrode that generates an electric field according to the power supplied from the power source on an outer circumferential face of the channel when the insertion portion is inserted into the channel; and a position restriction section that restricts a position of the insertion portion in the channel in a radial direction such that a distance between a center axis of the channel and a center axis of the insertion portion is equal to or smaller than a predetermined value.

Claims

1. A treatment device comprising:

a cylindrical insertion portion inserted into a cylindrical channel from an insertion port of an endoscope including the channel;

a treatment section installed on a distal end portion of the insertion portion and configured to perform treatment according to high-frequency power supplied from a power source in a state that the insertion portion is inserted into the channel so that the distal end portion is projected from an opening different from the insertion port;

a power reception electrode installed along an outer circumferential face of the insertion portion and configured to form a capacitor by capacitively coupling to a power transmission electrode that generates an AC electric field according to the high-frequency power supplied from the power source on an outer circumferential face of the channel when the insertion portion is inserted into the channel until the treatment section projects from the opening; and

a position restriction section that restricts a position of the insertion portion in the channel in a radial direction such that an amount of eccentricity equivalent to a distance between a center axis of the channel in a longitudinal direction and a center axis of the insertion portion in a longitudinal direction at an installation position of the power reception electrode is equal to or smaller than a predetermined value.

2. The treatment device according to claim 1, wherein

the position restriction section is formed as one or a plurality of protruding portions projecting outwardly in the radial direction of the insertion portion at a position including the installation position of the power reception electrode on the outer circumferential face of the insertion portion.

3. The treatment device according to claim 2, wherein

the one or the plurality of protruding portions have one of a substantially hemispherical shape, a spiral shape, a linear shape, and a waveform shape.

4. The treatment device according to claim 1, wherein

the position restriction section is formed by deforming, into an elliptic cylindrical shape, at least part of a zone equivalent to the installation position of the power reception electrode in the insertion portion.

5. A medical system comprising:

an endoscope including a cylindrical channel;

a treatment device including;

a cylindrical insertion portion inserted into the channel from an insertion port provided on the endoscope; and

a treatment section installed on a distal end portion of the insertion portion and configured to perform treatment in a state that the insertion portion is inserted into the channel so that the distal end portion is projected from an opening different from the insertion port; and

a power source that supplies high-frequency power used for the treatment by the treatment section, wherein

the endoscope comprises a power transmission electrode installed along an outer circumferential face of the channel and configured to generate an AC electric field according to the high-frequency power supplied from the power source, and

the treatment device comprises;

a power reception electrode installed along an outer circumferential face of the insertion portion and configured to form a capacitor by capacitively coupling to the power transmission electrode when the insertion portion is inserted into the channel until the treatment section projects from the opening; and

a position restriction section that restricts a position of the insertion portion in the channel in a radial direction such that an amount of eccentricity equivalent to a distance between a center axis of the channel in a longitudinal direction and a center axis of the insertion portion in a longitudinal direction at an installation position of the power reception electrode is equal to or smaller than a predetermined value.

6. The medical system according to claim 5, wherein

the one or the plurality of position restriction section is formed as one or a plurality of protruding portions projecting outwardly in the radial direction of the insertion portion at a position including the installation position of the power reception electrode on the outer circumferential face of the insertion portion.

7. The medical system according to claim 6, wherein

the protruding portions have one of a substantially hemispherical shape, a spiral shape, a linear shape, and a waveform shape.

8. The medical system according to claim 5, wherein

the position restriction section is formed by deforming, into an elliptic cylindrical shape, at least part of a zone equivalent to the installation position of the power reception electrode in the insertion portion.

9. The medical system according to claim 5, further comprising

an inductor serially connected to the power transmission electrode.