There seems to be new medical advances every day in the field of 3D printing. Materilaise has recently teamed with EU researchers to 3D print smart cardiac catheters which can change course within a persons blood vessels, as well as report on issues it may come about. Such catheters would make procedures safer, and give doctors more knowledge on their patient's cardiac conditions. More details on this work can be found here: http://3dprint.com/8640/smart-catheters-3d-print

Below is an image of one of these 3D printed catheters made via a spacial HeartPrint flex material by Materialise.