Endoscopic treatment instrument
AssigneePENTAX Corporation
InventorTeruo Ouchi
Life of this patent
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Abstract
In an endoscopic treatment instrument, a flexible tube has an area (A) which is to be located within an curved area (13) of an endoscope and which has a flattened cross-sectional shape.
Claims12
An endoscopic treatment instrument having a flexible tube provided in a treatment instrument insertion channel extending through an inserting section of an endoscope, said flexible tube being such that a portion thereof, located within a curved area formed in the distal end portion of said inserting section has a cross-sectional shape which promotes bending of said portion of the flexible tube in a first direction;
- wherein a portion of said flexible tube located closer to the distal end than said portion located within said curved area has a cross-sectional shape that is formed to have a flattened or notched cross-sectional shape which is twisted from said portion located within said curved area.
An endoscopic treatment instrument for use with an endoscope, the instrument comprising:
- a treatment instrument insertion channel extending through an inserting section of the endoscope, said treatment instrument insertion channel having a distal end and a curved area close to the distal end;
- and
- a flexible tube having a first area located within the curved area of said treatment instrument insertion channel, and a second area continuous with the first area and projecting from the distal end of said treatment instrument insertion channel, wherein the first area is more readily bendable in a first specified direction;
- wherein the second area is more readily bendable in a second specified direction;
- and
- wherein the orientation of the second area is gradually changed so that said second specified direction at a distal end of the second area opposite from the first area is different from said first specified direction.
Dependencies are inferred from the claim text.