Bi-Polar electrocautery needle
AssigneeRaychem Corporation
InventorsWilliam G. Bloom, Gary I. Geschwind
Life of this patent
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Abstract
A bi-polar electrocautery needle comprising an inner electrode, an outer electrode and recoverable insulating-locking member for insulating the electrodes from one another and locking them into relative position to one another. And the method of making the bi-polar electrocautery needle in accordance with this invention, the steps including: expanding recoverable dielectric material over an inner electrode; inserting the combination into an outer electrode, and recovering the material between the electrodes for insulating and locking the electrodes into relative position with one another.
Claims9
A bi-polar electrocautery needle, comprising:
- an inner electrode;
- an outer electrode concentric with the inner electrode;
- said electrodes having one end defining an operable tip and an opposed end adapted to be connected to a source of power;
- and
- insulating-locking means disposed between the electrodes, the insulating-locking means being in compression exerting a force in the radial direction on both electrodes, said insulating-locking means locking the electrodes in fixed relation to one another and insulating the electrodes from each other.
Dependencies are inferred from the claim text.