single continuous line drawing heartbeat icon. heart beat monitor pulse. heartbeat lone, cardiogram. beautiful healthcare, medical

abstract app banner beat black cardiac cardiogram cardiograph cardiologist cardiology care chart continuous contour curl curve diagnosis drawing ecg graph graphic hand health heart heartbeat icon line art logo medical monitor monoline one outline paper print pulse rhythm screen simplicity single sketch swirl symbol vector waveform white background icon pulse lone cardiogram beautiful healthcare medical style draw design