EEG / EMG in Washington

Cadwell Industries is a family-owned American manufacturer specializing in neurodiagnostic, neuromonitoring, and sleep diagnostic medical devices. Founded in 1979 and headquartered in Kennewick, Washington, the company employs approximately 260–281 people and maintains a strong commitment to in-house research and development. Cadwell's product portfolio includes the Sierra EMG/NCS/EP/Ultrasound systems for electromyography, nerve conduction studies, and evoked potentials; Arc EEG systems for electroencephalography and epilepsy monitoring; Cascade IONM equipment for intraoperative neurophysiological monitoring; and ApneaTrak HSAT and PSG systems for sleep diagnostics. The company also manufactures a comprehensive range of electrodes, consumables, supplies, and accessories for neurology applications. Cadwell serves hospitals, clinics, and home-care settings with global distribution, supported by dedicated customer service, online training resources, and educational workshops.

The TOVA Company manufactures and distributes the T.O.V.A. 9 (Test of Variables of Attention), a FDA-cleared medical device for objective assessment and evaluation of attention deficits, including ADHD, across clinical, educational, and research settings. The T.O.V.A. 9 measures key variables of attention and inhibitory control through standardized computerized testing with millisecond-level timing accuracy. The device is normed for ages 4–80+ and offers both visual and auditory test formats to measure separate functions independently. It includes an embedded performance validity measure for persons 17 and older and a short test option for preschool-aged children. The platform provides clinicians with objective data on response time, response time variability, and attentional performance that is not available from clinical interviews or behavioral rating scales alone. The T.O.V.A. 9 is supported by over 300 peer-reviewed publications demonstrating correlation between T.O.V.A. variables and ADHD diagnosis. Regulatory clearances include US FDA 510(k), European MDD, Health Canada MDEL, and Australian TGA. The company holds ISO 13485:2016 certification under MDSAP. The TOVA Company provides comprehensive support including free technical support, interpretation support, and customer service. The company operates a referral network and conducts monthly educational webinars for providers.

ISO 13485-certified manufacturer and distributor of electrodiagnostic neuro supplies since 1975. The Electrode Store specializes in needle electrodes (monopolar, concentric, hypodermic), surface electrodes, electrode gels, pastes, and accessories for EMG, EEG, NCS, IONM, and ERG applications. Products support diagnosis of neurological and neuromuscular disorders including carpal tunnel syndrome and epilepsy. The company offers both human and veterinary electrodiagnostic solutions, with proprietary surgical stainless steel needles featuring conical sharpening and proprietary insulation coating. FDA-registered with ISO 13485, MDSAP, and CE Mark certifications. Manufacturer of the DPNCheck nerve conduction device for peripheral neuropathy diagnosis and monitoring.