No stock site will take it, even with a release.

edit: I take that back.  Creative Market takes anything and passes the risk to the buyer and photographer.

ok thanks, I will take out the logo. 

Wow, the implications of branding some living thing with a logo from a medical device is really creepy!!!  So in effect, the living being loses their rights to autonomy simply by wearing a device.

I am not talking about a photo of the logo but a photo of the person or animal going about their life with the medical device that has a tiny logo on it (from company not opposed to medical device being photographed or photos sold of patient going about their life with device and willing to sign release).