Treatment apparatus for endoscope

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.

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.

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.

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.

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.