Previously, synthetic vessels could only be made with a diameter of around 6mm but the new 3D printed veins can be as small as 1mm. Writing in Advanced Materials Technologies, the team concluded ...

In a study out this month, scientists have demonstrated that their 3D-printed penile implant can ... which also presses up against the veins there, keeping the blood in place and the penis rigid).

During an erection, these spaces get filled with blood and press against nearby veins that block the blood ... the implantable 3D-printed organ was ready with a fused endothelial layer.