Swansea University's Calon Cardio heart pump

Drug discovery and medical innovation is a long, expensive, uncertain process.

It has led to some questions as to whether the Welsh government can justify spending so much on an industry, especially when the return on investment is far from guaranteed.

But Prof Marc Clement, executive chairman of Swansea University's Institute of Life Science (ILS), which last year celebrated its 10th anniversary, argues that the sector could be a key driver of growth in Wales.

Here he talks about a new heart pump - the Calon Cardio - which is aimed at helping those with heart failure.