I believe you are referring to a bluetooth receiver for your end, probably worn around your neck. Oticon refers to as ConnectLine. Siemens, who manufactured my Costco/Kirkland aids has one for their line. You would need a transmitter to attach to the stethoscope, since I know of no one making a steth with bluetooth connectivity built in.
From their web-site:
T-coils are standard in all Oticon BTEs and are optional in full shell, half-shell, low-profile and some canal-style hearing aids.
First, ask the Escope manufacturer, Cardionics, for help. Their website has info on connections form Ipaq and PC that should give you a starting point for settings. If you ask they might give very specific instructions and a lot of advice.
Second - here’s what I’m doing. Got my aids just over a week ago.
Ordered a Thinklabs DS32a+. It happens to be the least expensive right now, easily found for around $180-200 shipped. It has an output jack that allows me to make some sort of connection. Your Cardionics does, too.
Ordered a Clear Sounds CLA7-V2 neckloop. It is a device that will connect through your T-coils at the hearing aid end, and a wire to the output on the DS32a end.
So I will end up with:
A steth hung around my neck by the unused earpieces
A wire going from the steth controls to a small device hanging around my neck
The sound automagically goes from the wire around my neck to my aids.
I ordered a bluetooth neckloop and transmitter (dongle) so can play with that approach, too.
I have it all but forgot my stethoscope at work (typical of me). So, I will not be able to experiment until next week.
Fred