ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,721,981, issued on Sept. 1, was assigned to Boston Scientific Medical Device Ltd. (Galway, Ireland).
"Apparatus and method for biological tissue puncture expansion" was invented by Christian Balkovec (Burlington, Canada) and Linus Hoi Che Leung (Toronto).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method and apparatus are disclosed for an elongated introducer assembly. The elongated introducer assembly is manipulated and positioned proximate to a puncture hole in a tissue wall. A distal tip and distal end are advanced through the puncture hole and a distal expansion portion is selectively positioned relative to the puncture hole. An outer sliding sh...