ALEXANDRIA, Va., June 17 -- United States Patent no. 12,310,836, issued on May 27, was assigned to Akeo Hagiwara (Otsu, Japan).
"Vein cover" was invented by Akeo Hagiwara (Otsu, Japan) and Yosaku Hagiwara (Otsu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vein cover that can reduce or prevent intimal thickening by delivering blood to the downstream veins while gradually buffering the blood pressure, pulse pressure, and blood flow rate of the blood flowing through the lumen is provided.A cylindrical vein cover (10) is to be placed outside a vein (4) that is anastomosed to an artery (3) or to an artificial vessel (5), and has a portion (A) that has a 10% elastic index of 25 N or less when the inner ...