A Directional Radiofrequency (RF) Ablation Needle
AssigneeBoard of Regents, The University of Texas System
InventorsBRIAN T. BOIES, MAXIM ECKMANN
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Abstract
Certain embodiments are directed to radiofrequency (RF) ablation needle (cannula) design that alters the ablation field CN and enable a directionality to the ablation or RF field, i.e., directional RF needle/cannula. A directional RF ablation cannula described herein can be used to provide specific/directional tissue ablation. Such directionality allows the avoidance of sensitive structures or components of the body by positioning the RF field so that those non-target, sensitive structures or components are not within the ablation field.
Claims13
A directional radiofrequency (RF) ablation needle, comprising:
- a conductive body having a proximal end and distal end, the conductive body have an outer diameter of 0.1 to 20 mm and a length of 2 to 30 cm;
- an insulation layer on an outer surface of the conductive body extending from the proximal end to the distal end of the conductive body;
- and
- an exposed portion of the conductive body formed by a gap or opening in the insulation layer, the exposed portion having a circumferential angle of exposed conductive body of 1 to 180 degrees,
- wherein the directional RF ablation needle is configured to produce an asymmetric electromagnetic field.
Dependencies are inferred from the claim text.