TREATMENT APPLIANCE FOR ENDOSCOPE

摘要

PROBLEM TO BE SOLVED: To easily and safely guide an endoscope treatment appliance to a target part and surely extract a collected tissue to the body outside by providing a tissue collecting means in the adjacent to or the circumference of a tip part of an inner tube in a dual tube constituted of the hollow inner tube for guiding the endoscope and an outer tube for inserting the inner tube. SOLUTION: An outer tube 10 for forming an endoscope treatment appliance is constituted of an inner tube insertion part 10A and a connector part 10B and the tip part of the outer tube 10 is rounding processed. The inner tube 20 is constituted of a hollow cylindrical endoscope insertion part 20A and a connector part 20B and a tissue collecting means 20C having a notched structure or a coil structure and collecting a tissue is provided in the tip part of the inner tube and its surroundings. It is formed into such a length as projecting, at least, an inner tube tissue collecting means 20C in a case of inserting the inner tube 20 into the outer tube 10. The inside surface of the outer tube connector part 10B and the outside surface of the inner tube connector part 20B are tapered and the inner tube insertion part 10A and the needle base of the endoscopic insertion part 20A of the outer tube are also tapered.