State of the Heart
These electrocardiogram sensors incorporate the first solid-state electrometers commercially available. Their sensitivity to electric fields means that the conductive gel normally required for ECG sensors is not needed, nor is it necessary to position seven or more leads precisely on the body. Instead, the patient can simply hold a sensor in each hand to get an accurate reading of heart activity.
Product: EPIC ECG Sensor
Cost: $20 to $50
Companies: Plessey Semiconductors