From the UK, the ultimate do-it-yourself project: an engineer develops his own life-saving heart implant.

Above: the team used rapid prototyping to produce a perfect 3D thermoplastic model of the aorta and then set about developing a textile implant to fit it

A serious heart problem inspired UK engineer Tal Golesworthy to develop a device that offers hope not just for himself but for thousands of other patients with the same condition.