Electrocardiographic (ECG) recorders and electrocardiographic (ECG) digital plasters sold as a unit; Electrocardiographs; Medical device, namely, a device for improving cardiac performance through aortic flow therapy; Medical devices for monitoring blood properties and respiratory events; Medical devices for monitoring oxymetory, gas analysis and vital signs; Medical devices for monitoring oxymetory, gas analysis, vital signs, blood properties and respiratory events; Medical devices for monitoring oxymetory, gas analysis, vital signs, blood properties and respiratory events and software sold as a unit therewith; Medical devices for monitoring oxymetory, gas analysis, vital signs, blood properties and respiratory events and system that transmit the data through the Internet; Medical devices for monitoring vital signs, blood properties and respiratory events; Medical devices for treating congestive heart failure; Medical devices, namely, patient monitors and patient sensors for monitoring and measuring blood properties and respiratory events; Medical devices, namely, pulse oximeters; Portable medical devices used for breathing exercises, namely, portable devices used for endogenous breathing exercises and for respiratory muscle training; Portable medical devices with sensors to monitor the physical movements of a patient wearing or carrying the device