Patent ID: 8506477

Claim:
A ligating barrel for use with an endoscope, the ligating barrel comprising: a rigid first tubular section having a lumen extending there through, the lumen having a fixed internal diameter, at least two inwardly projecting tabs providing a decreased diameter along a portion of the lumen, the lumen being adapted to contain a distal end of an endoscope, the inwardly projecting tabs being configured to directly engage the distal end of the endoscope when contained within the lumen, and a tapered elastomeric second tubular section having an expandable diameter that is expandable from a minimum diameter that is less than the fixed internal diameter of the lumen of the first section, the second section comprising internal ribbing for providing a friction fit and direct contact with the distal end of an endoscope, the internal ribbing comprising a plurality of circumferentially oriented ribs having a semi-circular cross-section and encircling an interior surface of the second section.