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US 11,684,370 B2Granted
Criss-cross cords for band ligation
AssigneeUnited States Endoscopy Group, Inc.
InventorsFrederick Barclay Haller, Melissa Hagerman Haller
Life of this patent
Estimating the term…
Abstract
Devices, methods, and systems are provided for consistent and effective delivery of ligating bands. In one embodiment, a crisscross orientation of pull cords along an exterior surface of a ligation barrel can be used to ensure consistent delivery of ligation bands to tissue, resulting in better results for patients and an easier, safer operation for users.
Claims18
A band ligation device, comprising:
- an elongate barrel having a proximal end matable to an endoscope, a distal end, and an inner lumen extending through the proximal and distal ends;
- a plurality of bands disposed circumferentially around an external surface of the elongate barrel;
- and
- first and second cords, each cord extending from a terminal trailing end distally along the external surface of the elongate barrel, around the distal end, and proximally through the inner lumen such that a leading end of the cord extends proximally from the inner lumen of the elongate barrel, the first and second cords overlapping one another to form a plurality of points of overlap in a crisscross pattern along the external surface, and the first and second cords having a plurality of beads immovably disposed thereon and positioned between each of the plurality of bands for deploying the bands, and
- wherein the elongate barrel has a horizontal plane extending along a longitudinal axis of the inner lumen and through the distal end defining first and second sides of the elongate barrel, and the crisscross pattern is formed only on one of the first and second sides of the elongate barrel.
2 more elements
A band ligation apparatus, comprising:
- a hollow elongate barrel having a proximal end and a distal end with a terminal surface;
- first and second cords extending through the hollow elongate barrel, around the terminal surface, and along an outer surface of the hollow elongate barrel, the first and second cords having a plurality of beads immovably disposed thereon;
- and
- a plurality of bands disposed circumferentially around the hollow elongate barrel and the first and second cords, the plurality of bands being spaced axially therealong, at least one of the plurality of beads on each of the first and second cords being positioned between each of the plurality of bands for deploying the bands;
- wherein the first and second cords engage one another between each of the plurality of bands along the outer surface.
2 more elements
A method for loading a plurality of bands onto a ligation barrel, comprising:
- positioning a first bead on a terminal end of a first cord at a first location on an outer surface of the ligation barrel, and positioning a second bead on a second cord at a second location on the outer surface of the ligation barrel, the first and second locations being spaced equidistant from a distal end of the ligation barrel relative to each other and being spaced circumferentially from each other on the ligation barrel;
- advancing a first band onto the ligation barrel to position the first band distally adjacent the first and second beads;
- after advancing the first band onto the ligation barrel, crossing the first and second cords at least once;
- positioning a third bead on the first cord longitudinally distal to one of the first and second beads and positioning a fourth bead on the second cord longitudinally distal to the other of the first and second beads;
- and advancing a second band onto the ligation barrel to position the second band distally adjacent the third and fourth beads.
2 more elements
Dependencies are inferred from the claim text.