Lillie Yale received the device, known as Memosorb, to treat an atrial septal defect: a hole in the wall that divides the two upper chambers of the heart

Lillie Yale received the device, known as Memosorb, to treat an atrial septal defect: a hole in the wall that divides the two upper chambers of the heart

Lillie Yale, from Warrington, underwent surgery at Alder Hey Children's Hospital to have a biodegradable implant - around the size of a 10 pence piece - fitted to act as a…