This topic was discussed a while back on HN since its a topic that comes up a few times. Karen Sandler, executive director of the Software Freedom Conservancy,

This topic was discussed a while back on HN since its a topic that comes up a few times. Karen Sandler, executive director of the Software Freedom Conservancy, has a pacemaker with wireless communication that runs non-free software with undisclosed source code. When it was discussed on HN a developer for such company also gave his views, including the tight regulations that covers medical devices. FSF gave Karen Sandler an reward for her work on this: https://sfconservancy.org/news/2018/mar/26/sandler-fsf-free-software-award/ https://sfconservancy.org/news/2018/mar/26/sandler-fsf-free-... "Richard Stallman, President of the FSF, presented Sandler with the award during a ceremony. Stallman highlighted Sandler's dedication to software freedom. Stallman told the crowd that Sandler's “vivid warning about backdoored nonfree software in implanted medical devices has brought the issue home to people who never wrote a line of code. Her efforts, usually not in the public eye, to provide pro bono legal advice to free software organizations and [with Software Freedom Conservancy] to organize infrastructure for free software projects and copyleft defense, have been equally helpful.”."