Treatment apparatus for endoscope

• US 6,689,130 B2
• Filed: 06/03/2002
• Issued: 02/10/2004
• Est. Priority Date: 06/04/2001
• Status: Expired due to Term

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Kawashima, Koichi, Suzuki, Keita, Arai, Keiichi, Watanabe, Hiroyoshi, Ishikawa, Masahiro, Sugi, Yoshihiko
• Primary Examiner(s): GIBSON, ROY DEAN
• Application Number:
  US10/160,946
• Publication Number:
  US 20030009085A1
• Time in Patent Office: 617 Days
• Field of Search: 606/41, 606/42, 606/46, 606/47, 606/48, 600/101, 600/104, 600/153
• US Class Current: 606/46
• CPC Class Codes: A61B 1/00089 Hoods
• CPC Class Codes: A61B 1/00091 Nozzles
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 18/1482 having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
• 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 2017/00269 endoscopic mucosal resection EMR
• CPC Class Codes: A61B 2017/00296 mounted on an endoscope
• CPC Class Codes: A61B 2018/00601 Cutting
• CPC Class Codes: A61B 2018/00982 combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
• CPC Class Codes: A61B 2018/1407 Loop
• CPC Class Codes: A61B 2218/002 Irrigation

Abstract

A treatment apparatus to treat a tissue in a body cavity is disclosed. The apparatus comprises a base disposed in the vicinity of a tip-end portion of an endoscope, and an in-tissue inserting portion including a base end supported by the base and a tip end insertable in the tissue in the body cavity in a direction substantially parallel to the surface of the tissue, and extending to the tip end from the base end in a tapered shape. The in-tissue inserting portion has an inner side disposed in the vicinity of the surface of the tissue when inserted into the tissue. The apparatus further comprises a high-frequency electrode, for treating the tissue, supported by the base and disposed in the vicinity of the inner side of the in-tissue inserting portion, and a cable which supplies power to the high-frequency electrode from a high-frequency power source outside the body.

Claims

1. A treatment apparatus for an endoscope, which is inserted into a body cavity together with a tip-end portion of the endoscope, and which treats a tissue in the body cavity, the apparatus comprising:

a base disposed in the vicinity of the tip-end portion of said endoscope;

an in-tissue inserting portion including a base end supported by the base, and a tip end which can be inserted into the tissue in the body cavity in a direction parallel to the surface of the tissue, extending to the tip end from the base end in a tapered shape, and having an inner side disposed in the vicinity of the surface of the tissue when inserted into said tissue;

a high-frequency electrode for treating the tissue, which is supported by said base and disposed in the vicinity of the inner side of the in-tissue inserting portion; and

a cable which supplies power to the high-frequency electrode from a high-frequency power supply apparatus disposed outside the body.

2. A treatment apparatus for an endoscope, which is used in combination of the endoscope having a tip-end portion to be inserted in a body cavity, and used in treating a tissue in the body cavity, the apparatus comprising:

a tubular member which is disposed in the vicinity of a tip end of the endoscope, and includes a cylindrical side wall;

an aperture formed in said side wall;

an in-tissue inserting portion which is supported by the side wall of said tubular member, has a tip end projecting into the aperture, has a tapered shape, and has an inner surface disposed in the vicinity of a surface side of the tissue when inserted into said tissue;

a high-frequency electrode for treating the tissue, which is disposed on an inner surface side of said in-tissue inserting portion; and

a cable which supplies power to the high-frequency electrode from a high-frequency power supply apparatus disposed outside the body.

3. A treatment apparatus for the endoscope according to claim 2, wherein said high-frequency electrode is extended in a chord shape in a plane vertical with respect to an axial direction of the tubular member.

4. A treatment apparatus for the endoscope according to claim 2, wherein said high-frequency electrode extends in the axial direction of the tubular member.

5. A treatment apparatus for an endoscope, which is used in combination with the endoscope having a tip-end portion to be inserted into a body cavity, and used in treating a tissue in the body cavity, the apparatus comprising:

a tubular member which is disposed in the vicinity of the tip-end portion of the endoscope, and formed of an electrical insulator transparent and superior in heat resistance;

an in-tissue inserting portion which projects from said tubular member, is formed of a material superior in heat resistance and electrical insulation, and has an inner surface disposed in the vicinity of a surface side of the tissue when inserted into said tissue;

a high-frequency incising instrument having an incising portion disposed at a predetermined distance from an inner surface of the in-tissue inserting portion; and

a cable which supplies power to the incising portion of the high-frequency incising instrument from a high-frequency power supply apparatus disposed outside the body.

6. A treatment apparatus for the endoscope according to claim 5, wherein said tubular member is formed of a transparent and flexible material, and further includes an outer cylinder to contain the tubular member in an airtight manner so that the tubular member can be rotated and moved forwards/backwards, and the outer cylinder is shorter than said tubular member.

7. A treatment apparatus for the endoscope according to claim 5, wherein said in-tissue inserting portion projects from the tubular member in the axial direction.

8. A treatment apparatus for an endoscope, which is used in combination of the endoscope having a tip-end portion to be inserted into a body cavity, and used in treating a tissue in the body cavity, the apparatus comprising:

a tubular member which is disposed in the vicinity of a tip end of the endoscope, and includes a cylindrical side wall including an aperture;

an in-tissue inserting portion having a tapered shape which projects toward said aperture;

a deformable high-frequency electrode for treating the tissue, which is disposed at a predetermined distance from said in-tissue inserting portion inside said tubular member, and can abut on said in-tissue inserting portion by an operation outside a body; and

a cable which supplies a high-frequency current to the high-frequency electrode from a high-frequency power supply apparatus.

9. A treatment apparatus for the endoscope according to claim 8, wherein said high-frequency electrode is coated in order to be prevented from being burnt.

10. A treatment apparatus for the endoscope according to claim 8, wherein said in-tissue inserting portion is formed integrally with or separately from the tubular member, and projects in an axial direction.

11. A treatment apparatus for the endoscope according to claim 8, wherein said in-tissue inserting portion is formed integrally with or separately from the tubular member, and projects in a peripheral direction.

12. A treatment apparatus for the endoscope according to claim 8, wherein said in-tissue inserting portion can be rotated with respect to the tubular member.

13. A treatment apparatus for an endoscope, which is used in combination with the endoscope having a tip-end portion to be inserted in a body cavity, and used in treating a tissue in the body cavity, the apparatus comprising:

a tubular member which is disposed in the vicinity of the tip-end portion of the endoscope, and includes a cylindrical side wall;

first and second apertures disposed in the side wall of said tubular member;

first and second in-tissue inserting portions which are disposed in said tubular member, and have tapered shapes projecting toward the respective apertures;

a first high-frequency electrode for treating the tissue, which is disposed on an inner surface side of said first in-tissue inserting portion, and extends into a plane vertical to an axial direction of said tubular member;

a second high-frequency electrode for treating the tissue, which is disposed on the inner surface side of said second in-tissue inserting portion, and extends in the axial direction of said tubular member; and

a plurality of cables which supply a high-frequency current to the respective high-frequency electrodes.

14. A treatment apparatus for the endoscope according to claim 13, further comprising a power-supply apparatus located outside the body, and a switch apparatus for connecting at least one of the cables to the power-supply apparatus.

15. A treatment apparatus for the endoscope according to claim 13, further comprising:

identification means different in at least one portion of each of said first and second high-frequency electrodes entering an endoscope view field; and

first and second connectors disposed on a base ends of said cable, wherein the same identification means as the identification means for the first and second high-frequency electrodes are disposed in at least one portion of each of these connectors.

16. A treatment apparatus for the endoscope according to claim 13, wherein an angle of said high-frequency electrode to a tangent line of the tubular member in a connection point with the in-tissue inserting portion is in the range of 0°

to 90°

.

17. A treatment apparatus for the endoscope according to claim 13, wherein the angle of said high-frequency electrode to a tangent line of the tubular member in a connection point with the in-tissue inserting portion is in the range of 90°

to 180°

.

18. The treatment apparatus for the endoscope according to claim 13, wherein said first high-frequency electrode and second high-frequency electrode are disposed in positions in which the respective electrodes do not interfere with each other, and further a treatment instrument for the endoscope projected from the endoscope tip end is not interfered with.

19. A treatment apparatus for an endoscope, which is used in combination with an endoscope having a tip-end portion to be inserted into a body cavity, and used in treating a tissue in the body cavity, the apparatus comprising:

a base disposed in the vicinity of a tip-end portion of the endoscope;

a first high-frequency electrode for treating the tissue, which is supported by the base, and extends in a first direction;

a second high-frequency electrode for treating the tissue, which is supported by the base, and extends in a second direction different from the first direction;

a high-frequency power supply apparatus disposed outside the body;

first and second cables which are connected to said first and second high-frequency electrodes, and supply high-frequency currents to the first and second high-frequency electrodes from said high-frequency power supply apparatus; and

a switch apparatus which is disposed between said high-frequency power supply apparatus and the first and second cables, and selectively and electrically connects the high-frequency power supply apparatus to the first and second cables.