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The Grass MR Conditional/CT Cup Electrodes and Arrays are intended for use in the recording of the Electroencephalogram (EEG), the evoked potential (EP), or as a ground and reference in an EEG or EP recording. This device is non-sterile for Single Patient Use Only and may remain on the patient in an MRI or CT environment under specific conditions.

Grass® MR Conditional/CT Cup Electrodes are for surface monitoring EEG, electromyogenic and physiologic data signals commonly recorded on the chest, extremities, head and faces of patients. Grass® MR Conditional/CT Array Cup Electrodes are also used in electrocardiography, evoked potentials, and polysomnography. The Grass® MR Conditional/CT Array Cup Electrodes are MR conditional/CT. The included extension cables are MR/CT Unsafe. The Operating Principle and technological characteristics of the Grass MR Conditional Cup Electrodes are identical to the predicate device (K171102), with a few dimensional and material modifications that have been assessed to be equivalent to the predicate and therefore do not affect the fundamental scientific technology, safety, or effectiveness of the device (reference Substantial Equivalence of Technological Characteristics table, below). The test methods were identical to those used to assess the predicate device.

The Allergan Botox Needle Electrode are for SINGLE USE ONLY in electromyography (EMG) in situations wherein it is desired to insert an electrode, in the form of a probe, into a patient to locate a particular muscle and then inject a medication into that muscle. The hypodermic needle with an open lumen is designed for muscle stimulation, motor unit action potential recording and drug delivery. Once the physician is satisfied with the location, he/she injects a drug therein via the lumen of the needle.

The Allergan Botox Needle Electrode is used in EMG applications to record EMG activity while allowing injection of medication. The Allergan Botox Needle Electrode is a sterile, disposable, monopolar needle electrode with attached lead wire. The needle shaft is insulated so the needle records signals received only from the tip. The needle hub is designed to allow for precise manipulation of the electrode.

The disposable hypodermic monopolar needles are FOR SINGLE USE ONLY in electromyography (EMG) in situations wherein it is desired to insert an electrode, in the form of a probe, into a patient to locate a particular muscle and then inject a medication into that muscle. The hypodermic needle with an open lumen is designed for muscle stimulation, motor unit action potential recording and drug delivery. Once the physician is satisfied with the location, he/she injects a drug therein via the lumen of the needle.

The Myoject™ Luer Lock Needle Electrode is a Disposable Hypodermic Needle Electrode

Dantec™ DCN Disposable Concentric Needle Electrodes are intended for use with recording, monitoring and stimulation/recording equipment for the stimulation/recording of biopotential signals including electromyograph (EMG) and nerve potential signals.

The Dantec™ DCN Disposable Concentric Needle Electrodes are designed as an electrical bipolar recording device for use in electromyography. The Dantec™ DCN Disposable Concentric Needle Electrode consists of an insulated core wire located inside a stainless steel cannula. The hub has a raised bevel indicator, allowing the user to always know the direction of the recording surface. A coaxial hub allows easy connection between needle and the electrode cable.