ALEXANDRIA, Va., July 21 -- United States Patent no. 12,685,557, issued on July 21, was assigned to NIPRO VASCULAR INNOVATIONS AMERICAS INC. (Bedford, Mass.).

"Highly flexible, telescoping atherectomy device" was invented by John To (Sunnyvale, Calif.) and Paul Escudero (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Telescoping, self-driving, and laterally-pushing atherectomy devices are provided, each having a flexible sheath, a cutter with helical flutes, and a drive assembly. The drive assembly can have a flexible driveshaft that is rotatably translational within the lumen of the flexible sheath, a positive displacement pump that begins pumping at the distal end of the drive shaft adjac...