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US 2012/0083680 A1Published application
Needle tip and needle probe
OwnerJohn Christopher Carrinventor
Life of this patent
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Abstract
A monopolar needle probe for measurement of electrical activity in a patient. The needle probe has a nonconductive sheath and a conductive needle within the nonconductive sheath. The conductive needle has a longitudinal axis. An end of the needle is exposed from the nonconductive sheath and the end defines a plurality of substantially planar and symmetrical surfaces.
Claims16
A monopolar needle probe configured for measurement of electrical activity in patient tissue, the needle probe comprising:
- a nonconductive sheath
- a conductive needle disposed substantially within the nonconductive sheath, the conductive needle having a longitudinal axis wherein an end of the needle is exposed from the nonconductive sheath and the exposed end defines a plurality of substantially planar and symmetrical surfaces that terminate at a common point.
A method of manufacturing a monopolar needle probe comprising:
- providing a needle probe comprising a conductive needle within a nonconductive sheath;
- grinding a plurality of substantially planar and symmetrical surfaces on an end of the needle probe wherein the grinding removes at least a portion of the nonconductive sheath and wherein after grinding one of the plurality of the substantially planar and symmetrical surfaces, another of the plurality of the substantially planar surfaces is ground after rotating the needle probe around a longitudinal axis of the needle probe.
Dependencies are inferred from the claim text.