Doppler ultrasound medical device used in the detection of blood flow and obstetric applications; Transcranial Doppler (TCD) Equipment used to measure blood flow parameters such as velocity in key vascular structures in the brain; Antepartum monitors for fetal non-stress test exams; TCD systems for diagnostic and monitoring of the blood flow, the TCD systems including computer, display, software and probes to collect and analyze ultrasound data; fetal pulse monitor; fetal monitor obstetric applications for monitoring vital signs;   medical devices, specifically cortical stimulator used in brain mapping, EEG monitoring and identification of critical brain structures; electroencephalography (EEG) equipment and neurodiagnostic medical devices composed of computer hardware and software used for the collection, monitoring, analysis and display of EEG brain waves and other physiologic data and neurodiagnostic data in patients of all ages for assisting in the diagnosis of a variety of conditions Long Term Monitoring (LTM) EEG equipment for monitoring EEG brain waves and other physiologic data for longer periods of time primarily in the diagnosis of epilepsy. polysomnography (PSG) equipment used to measure a variety of respiratory and physiologic functions to assist in the diagnosis and monitoring of sleep disorders brain monitor for use in the ICU and with unresponsive in patients with epilepsy, head trauma and stroke; monopolar needle electrodes, concentric needle electrodes, and injectable needle electrodes, all for use with medical devices for monitoring patients' vital signs;  a medical system comprising a hardware platform of amplifiers, base control units, stimulators and hand-held probes, the system including Electromyography (EMG), Nerve Conduction Studies (NCS), Evoked Potentials (EP's), and Intraoperative Monitoring (IOM) and advanced data analysis features, all for use in measuring electrical activity in nerves, muscles, and critical pathways of the nervous system; IOM Equipment including amplifiers, software, data analysis and display capabilities used to monitor the functional integrity of neural structures during surgery