IIT-Bombay prepares digital stethoscope called “AyuSynk” Nitin Yadav 5 years ago IIT-Bombay has prepared a digital stethoscope called “AyuSynk” to check patients who are infected with COVID-19.IIT Bombay converts conventional stethoscopes into digital ones.The conventional stethoscope may pose a danger of infection to healthcare professionals handling coronavirus patients.