Needle having multiple electrodes

Details Needle having multiple electrodes Needle having multiple electrodes

2007-10-16

2007-10-16

Hindenburg, Max (Department: 3736)

Surgery

Diagnostic testing

Detecting muscle electrical signal

Reexamination Certificate

active

11130222

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.

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Jun Kimura, “Electrodiagnosis in Diseases of Nerve and Muscle: Principles and Practice”, F.A. Davis Company, 2ndedition, pp. 38-41.
Jun Kimura, “Electrodiagnosis in Diseases of Nerve and Muscle: Principles and Practice”, Oxford University Press, 3rd edition, 2001, pp. 38-41.

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