Back to results
US 10,299,858 B2Granted
Variable thickness electrosurgical snare
AssigneeCook Medical Technologies LLC
InventorTyler Evans McLawhorn
Life of this patent
Estimating the term…
Abstract
An electrosurgical snare may include a conductive distal loop that includes an uninsulated thinner portion and an uninsulated thicker portion. Respective current densities over the outer surfaces of the thinner and thicker portions may cause the uninsulated thinner portion to immediately begin cutting tissue, while the uninsulated thicker portion may initially begin coagulating the tissue.
Claims4
A method of performing tissue resection, the method comprising:
- delivering a conductive distal loop of an electrosurgical snare to a treatment site within a patient, wherein the distal loop comprises a thinner uninsulated portion having a first outer diameter and a thicker uninsulated portion having a second outer diameter, the second outer diameter being greater than the first outer diameter;
- positioning the distal loop around a target tissue portion of underlying tissue to be resected;
- contacting a first portion of the target tissue portion with the thinner uninsulated portion and a second portion of the target tissue with the thicker uninsulated portion;
- applying electrical current to the target tissue portion with both the thinner uninsulated portion and the thicker uninsulated portion of the distal loop;
- cutting the first portion of the target tissue portion with the thinner uninsulated portion of the distal loop upon applying the electrical current;
- and
- coagulating before cutting the second portion of the target tissue portion with the thicker uninsulated portion upon applying the electrical current;
- and
- retracting the distal loop into a lumen of an elongate tubular member upon applying the electrical current to the target tissue portion.
6 more elements
Dependencies are inferred from the claim text.