ALEXANDRIA, Va., March 17 -- United States Patent no. 12,575,952, issued on March 17, was assigned to BIOTUBE Co. LTD (Chuo-ku, Japan).
"Intravascular indwelling stent" was invented by Yasuhide Nakayama (Tokyo), Hisashi Sugiura (Shinshiro, Japan) and Takaharu Tanaka (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is an intravascular indwelling stent that include a stent main body and a polymer film covering the stent main body. Through-holes are formed in the polymer film. The through-holes connect an inside and an outside of a cylinder of the intravascular indwelling stent to each other and each have an opening size of 0.02 mm or more and 0.2 mm or less. An opening occupancy, which i...