A new device could put the beat back into weak hearts - and free patients from a lifetime of anti-rejection drugs.

Researchers at TCT 2007, the annual scientific symposium of the Cardiovascular Research Foundation (CRF), will present new studies evaluating a rapidly advancing field within interventional cardiology: percutaneous procedures to repair and replace defective heart valves.

A recent simulation has shown that thin layers of ice could persist on specially treated diamond coatings at temperatures well above body temperature, which could make ice-coated-diamond films an ideal coating for artificial heart valves, joint replacements, and wear-resistant prosthetics.

Some day, heart attack survivors might have a patch of laboratory-grown muscle placed in their heart, to replace areas that died during their attack. Children born with defective heart valves might get new ones that can grow in place, rather than being replaced every few years. And people with clogged or weak blood vessels might get a new "natural" replacement, instead of a factory-made one.