cardiophone

car·di·o·phone

(kar'dē-ō-fōn),
A stethoscope specially modified to aid in listening to the sounds of the heart.
[cardio- + G. phōnē, sound]
References in periodicals archive ?
Stefan Sack confirms: "Vitaphone initially turned to Benefon since Benefon could offer a complete wireless instrument solution, enabling fast time-to-market for the Cardiophone service.
The new Cardiophone service is utilising a Vitaphone-specific Herz Handy(r) version of Benefon's new GSM+GPS wireless communication instrument Benefon Track, which is a unique combination of a full-feature GSM phone, GPS (Global Positioning System) receiver and Mobile Phone Telematics Protocol (MPTP).
The user places the back of the cardiophone on his chest and the ECG is registered.