Code and documentation mean someone could theoretically maintain it, but the average consumer could not. You need someone with the knowledge, time, equipment, etc. to think it's worth their while to learn how to maintain it. In the case of a physical device that also means the ability to manufacture spare parts, some of which could be very exotic. For an experimental medical device, it also includes detailed medical knowledge that most doctors don't have. And actually working on it means being willing to take the risk of killing someone if you screw up.

I doubt the person in the article would be helped in the slightest by receiving code and documentation.