Now that's a left ventricle pushing blood up through the aortic valve you can see two of the leaflets of the aortic valve working there up into the ascending aorta.

So I set out to change the entire treatment for aortic dilation.

It has a funny trilobal shape at the bottom, which contains the aortic valve.

And still, there are people in the U.K. saying, Yeah, that external aortic root, yeah, it'll never work, you know.

For now, the British upper lip seems to have regained some of its stiffness. One hopes that this will last long enough for British society to regain its stability and its much needed vigor.

If you compare our new treatment to the existing alternative, the so called composite aortic root graft, there are one of two startling comparisons, which I'm sure will be clear to all of you.

What we discovered is whether you look at the leg of a human like Richard, or a cockroach, or a crab, or a kangaroo, the relative leg stiffness of that spring is the same for everything we've seen so far.