Patent ID: 8845516
Filing Date: 2014-09-30
Classification: A61B

Abstract:
1. A ligator for use with an endoscope having a body, a flexible tube extending from the body, and an accessory channel extending through the body and the tube, the ligator comprising: a trigger unit including a revolving part, a built-in spring that applies an opposing spring force to the revolving part when it is turned, and a built-in stop that limits turning of the revolving part to an extreme position beyond which it can no longer be turned; a connecting part extending from the trigger unit and including an elongated arm adapted to directly grip the body of the endoscope at a portion of the body located between an opening to the accessory channel and the flexible tube; a nozzle extending from the connecting part, the nozzle being adapted to be received within the accessory channel of the endoscope; a bush adapted to mount to an end of the tube of the endoscope, the bush supporting elastic bands to be deployed for ligation; and a trigger cord connected at a first end to the revolving part of the trigger unit and connected at a second end to the bush; wherein turning of the revolving part from a starting position causes up-winding of the trigger cord, wherein a single elastic band is deployed when the revolving part reaches the built-in stop at the extreme position, and wherein the revolving part automatically returns to the starting position under the force of the built-in spring when the revolving part is released, at which point it is ready to be turned again to deploy the next elastic band.