NEEDLE HAVING MULTIPLE ELECTRODES
First Claim
Patent Images
1. A method of forming a needle, comprising:
- providing a needle blank having first and second concentric electrodes;
providing an insulation material around at least part of the needle blank;
providing a conductive material around at least part of the insulation material to form a third electrode; and
sharpening one end of the needle blank to form a sharpened tip portion of the needle.
2 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of the invention generally relate to needles having more than one electrode and which are particularly suited for use in electromyography. One embodiment relates to a tripolar needle having three concentric electrodes. The tripolar needle is formed by providing a needle blank having first and second concentric electrodes and forming a third concentric electrode around the needle blank. The tripolar needle has an outer diameter which is substantially constant along the shaft of the needle, except at the tip, where the needle is sharpened.
9 Citations
22 Claims
-
1. A method of forming a needle, comprising:
-
providing a needle blank having first and second concentric electrodes;
providing an insulation material around at least part of the needle blank;
providing a conductive material around at least part of the insulation material to form a third electrode; and
sharpening one end of the needle blank to form a sharpened tip portion of the needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method of forming a needle, comprising:
-
providing a needle blank having first and second concentric electrodes;
providing a conductive material around at least part of the needle blank;
injecting an insulating material between the needle blank and the conductive material; and
sharpening one end of the needle blank to form a sharpened tip portion of the needle. - View Dependent Claims (10, 14, 16, 17)
-
-
11. A method of forming a needle, comprising:
-
providing a needle blank having first and second concentric electrodes;
forming an outer insulation layer around the needle blank;
forming a third concentric electrode around the outer insulation layer; and
sharpening one end of the needle blank to form a sharpened tip portion of the needle. - View Dependent Claims (12, 13, 15, 18, 19, 20, 21)
-
-
22. A method of forming a needle, comprising the steps of:
-
providing a needle blank having first and second concentric electrodes, the first electrode being formed inwardly of the second electrode;
removing a portion of the second electrode along a shaft of the needle;
adding an insulation layer around the needle at least along the part of the shaft from which the portion of the second electrode was removed;
providing a conductive material to form a conductive layer around the insulation layer;
cutting excess added insulation material and conductive material from the needle so that an outer diameter of the needle is the same as an outer diameter of the needle blank, whereby a third concentric electrode is formed from the conductor layer at least partly along the portion of the shaft from which the portion of the second electrode was removed; and
sharpening one end of the needle blank to form a sharpened tip portion of the needle.
-
Specification