A ligating apparatus is disclosed comprising a barrel-shaped ligator attached to and coaxial with the penetrating end of a structure, such as an endoscope, and a cord pulling assembly at the opposed end of the structure. A pullable cord is wound on the cord pulling assembly so as to extend through a working channel in the endoscope thereby penetrating the ligator. A practitioner may view via the operating end of the endoscope to observe flesh, for example, in front of the ligating end of the ligator. The ligator includes coaxial inner and outer barrels that rotate relative to each other upon pulling of the cord, thereby causing one barrel to move laterally with respect to the other barrel and to eject a ligature from the ligating end of the ligator. The cord pulling assembly is mounted on the endoscope by opposed arcuate arms and a transverse removable pin.
