System and method for endoscopic treatment of tissue
AssigneeCook Medical Technologies LLC
InventorsDavid F. Waller, Hilbert D. Brown, Patricia J. Chilton, David M. Hardin, Kimberly K. Ingram, Kenneth C. Kennedy, II, Vihar C. Surti, Marcie G. Yount
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Abstract
An improved ligating system with a ligating barrel having an adjustable diameter for use with endoscopes of varying sizes is disclosed. The adjustable diameter may be provided by a collet, a flexible helical band, a plurality of screws, or a tapered elastomeric section.
Claims9
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.
A ligating barrel adapted to be removably attached to an endoscope, the ligating barrel comprising a tubular band deployment section and a tubular conformable section, said band deployment section having an internal first diameter, said conformable section comprising an internal second diameter and a means for adjusting the internal second diameter of the conformable section for direct attachment to a distal end of an endoscope,
- wherein the distal end of the endoscope comprises an external diameter that is substantially smaller than the first diameter of the band deployment section, and
- wherein the conformable section further comprises a plurality of spaced apart surface features having a curvilinear engagement surface that is configured to frictionally and directly engage the distal end of the endoscope, the surface features each having a width that is less than the spacing therebetween.
Dependencies are inferred from the claim text.