ALEXANDRIA, Va., June 5 -- United States Patent no. 12,274,822, issued on April 15, was assigned to Rex Medical LP (Conshohocken, Pa.).

"Atherectomy device" was invented by James F. McGuckin Jr. (Radnor, Pa.), John D. Leedle (Chicago), Colin Valentis (Lansdale, Pa.) and Jenna Rose Israel (Philadelphia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A surgical atherectomy apparatus for removing particles such as plaque from an interior of a vessel having a motor housing slidable axially between a proximal position and a distal position. An axially fixed sheath extends from the outer housing and a catheter is connected to the motor housing and is positioned within the sheath. A rotatable shaft is positioned wit...