Patent ID: 7488333
Filing Date: 2009-02-10
Classification: A61B

Abstract:
1. A device for applying successive resilient ligating bands to tissue, the device comprising a barrel having an opening at a free end thereof, means for drawing tissue to be ligated into the opening, and a plurality of circumferential grooves around the barrel adjacent the free end each for accommodating a respective ligating band, the grooves being defined by ridges on two separate components of the barrel of which a first component is reciprocal relative to the second component in the direction towards and away from the free end of the barrel so that when the first component advances towards the free end its ridges push the bands forwardly so that they ride up over the ridges of the second component to each lie one groove nearer the free end, the foremost band being pushed off the free end of the second component onto the tissue, whereas when the first component retracts away from the free end the bands ride up over the ridges of the first component to remain in their advanced positions; and wherein the first component comprises a tube having at its free end a plurality of circumferential ridges interrupted by paraxial slots, and wherein the second component comprises a plurality of fingers which are slidably accommodated in the slots of the first component, the fingers having ridges with substantially the same pitch and cross-section as those of the first component.