Ablator with scalloped electrode and swaged tube
AssigneeArthrex, Inc.
InventorsDavid P. Gallo, Sr., Randall L. Hacker, Terrance J. McLaughlin, Christine A. Bickenbach
Life of this patent
Estimating the term…
Abstract
A high efficiency electrosurgical electrode with an advanced electrically conductive tip and advanced design tube, and a method of conducting an electrosurgical procedure with such electrode. The tube design is provided with a swaged one-piece metal tube that fits in small cannulas (as small as a 5.5 mm cannula). The electrode has a scalloped configuration that provides decreased surface area with more edges. The handle is provided with an ergonomic design that utilizes a bend with a cut at the end of the tube (for example, a 30 degree bend with a 15 degree cut).
Claims23
An electrosurgical ablator comprising:
- a shaft having a proximal end and a distal end, the shaft being a swaged and bent one-piece metal tube;
- and
- at least one active electrode located at or near the distal end of the shaft including an electrode base provided with a tubular member defining a central lumen and an electrode ring attached to the electrode base, the electrode ring surrounding the electrode base, wherein a most distal surface of the electrode base and of the electrode ring has a scalloped configuration, and wherein the electrode base and the electrode ring are formed of an electrically conductive material.
An electrosurgical ablator comprising:
- a shaft having a proximal end and a distal end, the shaft being a swaged and bent one-piece metal tube;
- and
- at least one active electrode located at or near the distal end of the shaft, wherein the at least one active electrode comprises an electrode base and a ring attached to the electrode base, wherein a most distal surface of at least one of the electrode base and the ring has a scalloped configuration, the electrode base comprising a tubular member with a wall having an outer surface and an inner surface, the outer surface being provided with a plurality of scalloped grooves that are equally spaced from each other, wherein the electrode base is provided with a central lumen which is non-aspirating when the electrosurgical ablator is in working mode, and wherein the electrode base and the electrode ring are formed of an electrically conductive material.
An active electrode of an ablator, comprising:
- an electrode base comprising a first tubular member having a first outer surface and a first inner surface, wherein the first outer surface has a regular polygonal shape when viewed in a cross-sectional view and wherein the first outer surface is provided with a first plurality of recesses so that the electrode base has a first scalloped configuration when viewed in a distal cross-sectional view;
- an electrode ring attached to the electrode base and surrounding the electrode base, the electrode ring comprising a second tubular member disposed concentric with the first tubular member of the electrode base, the second tubular member having a second outer surface and a second inner surface, wherein at least one of the second inner and outer surfaces is provided with a second plurality of recesses so that the electrode ring has a second scalloped configuration, and wherein the electrode base and the electrode ring are formed of an electrically conductive material;
- and
- an insulator provided on the second outer surface of the electrode ring.
A method of conducting an electrosurgical procedure comprising the steps of:
- providing an active electrode of an electrosurgical probe comprising a shaft having a proximal end and a distal end, the shaft being a swaged and bent one-piece metal tube;
- and at least one active electrode located at or near said distal end of the shaft including an electrode base and an electrode ring attached to the electrode base and surrounding the electrode base, wherein a most distal surface of the electrode base has a first scalloped configuration, and wherein a most distal surface of the electrode ring has a second scalloped configuration, and wherein the electrode base and the electrode ring are formed of an electrically conductive material;
- positioning the active electrode in the proximity of a tissue to be treated in the presence of an electrically conductive fluid;
- and
- effecting ablation of at least a portion of the tissue to be treated.
Dependencies are inferred from the claim text.