The drug-coated stents were invented to solve this problem by preventing this re-healing with a drug-and-polymer coating, and they do that very effectively.

FORBES: Magazine Article

The coating prevents the arteries from re-closing.

FORBES: J&J's Eleventh-Hour Victory

These can be made to emit white light by coating the device with a phosphor compound that absorbs part of the blue light and re-emits it as yellow.

ECONOMIST: Lighting: A brilliant new approach | The