How can you make it back to the lungs without help? Fortunately, veins have tiny valves within them that allow blood to flow in only one direction. When muscles contract near larger veins, they pump ...

Engineers at Georgia Tech developed the prosthetic vein valve shown here to help improve the lives of those suffering from a condition known as chronic venous insufficiency. Disclaimer ...

David Ku, Regents' Professor in mechanical engineering at Georgia Tech, squeezes the prosthetic vein valve to the open position. The valve is designed to replace damaged, nonfunctioning valves.

Your veins bring blood back to the heart after it flows through your body. Veins have valves that keep the blood moving in one direction—toward the heart. But with venous insufficiency, the veins of ...

This causes inflammation, stretching and weakening of the venous walls, stagnation of blood, and impairment of the venous valves. Situations increasing the chances of developing varicose veins are ...

Innoventric's Trillium, now in clinical trials, is implanted in a 10-minute procedure under sedation to treat a leak in the ...

It is used to remove a damaged vein and prevent complications of vein damage. If several valves in a vein and the vein itself are heavily damaged, the vein (or the diseased part of the vein) is ...

“Venous insufficiency” means that the veins aren’t working adequately, usually because the valves that prevent backward flow have failed. So, the pressure in the vein is higher than it ought ...

They also use the movement of nearby muscles to move it along. The veins also have valves that keep blood from flowing backward and pooling in your arms and legs. When your blood doesn't move as ...

In a normal leg with no varicose veins, valves which regulate blood flow from the leg upwards to the heart function normally and do not allow reverse flow of the blood into the leg. In case of ...