Electrosurgical instrument with needle electrode
First Claim
Patent Images
1. An electrosurgical instrument for conveying electrosurgical power to tissue to achieve a predetermined electrosurgical effect, comprising:
- an electrically conductive needle element having a first section and a first tapered section tapering towards and terminating at a distalmost conductor tip;
an insulation layer having a second tapered section generally following the contours of and overlaying the conductive needle element and at least a portion of the first tapered section such that the distalmost conductor tip is exposed while the insulation layer overlays the remainder of the electrically conductive needle element; and
an electrical coupling surface for electrically coupling the electrically conductive element to a handle.
5 Assignments
0 Petitions
Accused Products
Abstract
An electrosurgical instrument includes a conductive element in the form of a needle that is surrounded by an insulation layer except at a conductor tip portion of the conductive element. The conductor tip portion and insulation layer each have unique geometric shapes and composition of the parts to reduce or eliminate the production of smoke and eschar and reduce tissue damage. The electrosurgical needle electrode is configured to concentrate the flow of electrosurgical at the tip region.
-
Citations
45 Claims
-
1. An electrosurgical instrument for conveying electrosurgical power to tissue to achieve a predetermined electrosurgical effect, comprising:
-
an electrically conductive needle element having a first section and a first tapered section tapering towards and terminating at a distalmost conductor tip; an insulation layer having a second tapered section generally following the contours of and overlaying the conductive needle element and at least a portion of the first tapered section such that the distalmost conductor tip is exposed while the insulation layer overlays the remainder of the electrically conductive needle element; and an electrical coupling surface for electrically coupling the electrically conductive element to a handle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
-
-
44. A sterile package kit for use in performing an electrosurgical procedure, comprising:
-
a sterile package; a electrosurgical instrument sealed within the sterile package, the electrosurgical instrument comprising an electrically conductive needle element having a first section and a first tapered section terminating at a distalmost conductor tip; an insulation layer having a second tapered section overlaying the conductive needle element which tapers on all sides of the first tapered section to expose the distalmost conductor tip forming a primary reaction region while the insulation layer overlays the remainder of the electrically conductive needle element; a handle sealed within the sterile package and coupled to the electrically conductive element; and an electrical connector sealed within the sterile package and configured to be coupled to the handle and configured to electrically couple the electrosurgical instrument to a radio frequency power source. - View Dependent Claims (45)
-
Specification