If they saw the writing on the wall they could open-source before they went into bankruptcy. However, that could open them up to lawsuits if it was deemed they were "destroying" their assets before they could be claimed by investors and/or creditors, but that's a big legal gray area depending on what you can show in court. And venture capitalists have better lawyers than bankrupt companies typically do.
Well, they would need to see where the item is in the chest cavity after the injury. And it's not like they're gonna take another MRI afterwards to do that, so...
That said, id be surprised if the plug didn't just... Exit the person's body, through existing holes or new ones, once they were in the MRI. Those magnets are strong.