Patent ID: 6464685
Filing Date: 2002-10-15
Classification: A61B

Abstract:
An endoscopic ligation kit for attachment to a distal end of an endoscope so as to draw and ligate tissue in a body cavity comprising:an inner cylinder; an outer cylinder having a bore within which the inner cylinder fits which has at least two step portions of diminishing outer radii formed on an outer periphery of a distal end portion of said outer cylinder and having a notch extending from the distal end portion to a maximum outer diameter portion; a slide cylinder having a bore and having a projection at a distal end portion, the projection conforming in size to the notch in the outer cylinder, and the projection having steps conforming to a shape of the at least two step portions of the outer cylinder, the slide cylinder is received in the outer cylinder in such a manner that the projection of the slide cylinder is fitted in the notch in the outer cylinder and the inner cylinder is fitted in the bore of the slide cylinder; at least one O-ring mounted on the outer periphery of the distal end portion of the inner cylinder and the at least two step portions of the outer cylinder; wherein the projection, formed on the slide cylinder, is projected toward the distal end portion, and thereby disengages the at least one O-ring, mounted on the outer periphery of the distal end portion of the inner cylinder, therefrom, and also moves the at least one O-ring, mounted on the at least two step portions of the outer cylinder, to a forwardly-adjacent step of the at least two step portions of the outer cylinder and the outer periphery of the distal end portion of the inner cylinder.