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US 11,109,908 B2Granted
RF surgical resection snare for flexible endoscopy
OwnerGünter Farininventor
Life of this patent
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Abstract
A polypectomy snare comprising two snare parts has a snare part that is completely electrically insulated and another snare part that is not electrically insulated in at least one distal portion thereof. The snare furthermore has at least one electrically insulated, HF surgically inactive skid at its distal end.
Claims13
A resection snare comprising:
- a first snare portion having a first electrical conductor, a first length, a first proximal end, and a first distal end, the first electrical conductor having a first insulation element electrically insulating said first electrical conductor at the first proximal end;
- a second snare portion having a second electrical conductor, a second length, a second proximal end, and a second distal end, the second electrical conductor having a second insulation element electrically insulating said second electrical conductor at the second proximal end;
- wherein at least one of the first and second electrical conductors includes a non-electrically insulated region at the corresponding first and second distal ends;
- a catheter containing and configured to guide a manipulation wire therein,
- wherein
- a) the first and second proximal ends are electrically connected with or merging at a location of said manipulation wire and
- b) the first and second snare portions are electrically connected to one another at a point of electrical connection opposite to said location
- to close the first and second electrical conductors into an electrically-conducting snare loop;
- and
- wherein the resection snare includes at least one electrically-insulated HF-surgically inactive skid formed by at least one of the first and second distal ends extending outside said snare loop, said electrically-insulated HF-surgically inactive skid configured to be brought in contact with an organ wall during operation of the resection snare to support the snare loop against the organ wall while preventing the snare loop from penetrating into the organ wall.
7 more elements
Dependencies are inferred from the claim text.