Design and development of new materials, especially nanocomposites, and their application in biomedicine, from diagnostics and monitoring of physiological parameters and analyte (biomolecule) concentrations in patients to drug delivery, is a very interesting and inexhaustible area of ​​research. The paper studies conductive materials such as fibers, hydrogels, and various nanomaterials, which are used to produce electrochemical nano/biosensors for biomedical applications (for early cancer detection, drug delivery systems, and neuromonitoring). The advantages of using nano/biosensor devices in remote patient monitoring systems are reflected in the measurement of physiological parameters such as heart rate/pulse, respiratory rate, body temperature, blood pressure and blood oxygen saturation, and wireless connection of sensors, whereby physiological data can be measured and transmitted (tele-health). These sensors can be embedded in the patient's body or in the fabric of clothing, so they are called wearable smart devices, and are characterized by accuracy, precision and high sensitivity.