OK, if I understand you now, I think you confused things by bringing up MDSAP, which has nothing to do with it. Devices that in whole or in part on their CE certification for market access to other countries, then yes, their access to those markets could be in jeopardy after May 26. I think it is probably up to each country's regulatory authorities to decide how they want to handle this.
PS It is rarely fine to supply Class III devices in the US based on FDA 510(k). However, a device that is Class III in the EU could be Class II in the US. Although risk-based classifications tend to be similar worldwide, they are established by each regulatory authority independently. So a device may be one class in one regulatory jurisdiction and another class in another regulatory jurisdiction. Otherwise, if the FDA reviewed the 510(k), and the FDA didn't say a PMA was needed, then a PMA is not needed. But this would be an extremely rare situation, and I would definitely not latch on to the idea that devices that are Class III in the US do not need a PMA.
PS It is rarely fine to supply Class III devices in the US based on FDA 510(k). However, a device that is Class III in the EU could be Class II in the US. Although risk-based classifications tend to be similar worldwide, they are established by each regulatory authority independently. So a device may be one class in one regulatory jurisdiction and another class in another regulatory jurisdiction. Otherwise, if the FDA reviewed the 510(k), and the FDA didn't say a PMA was needed, then a PMA is not needed. But this would be an extremely rare situation, and I would definitely not latch on to the idea that devices that are Class III in the US do not need a PMA.