ALEXANDRIA, Va., March 12 -- United States Patent no. 12,246,181, issued on March 11, was assigned to Medtronic Inc. (Minneapolis).

"Dual chamber pacing" was invented by Matthew D. Bonner (Plymouth, Minn.), Kathryn Hilpisch (Cottage Grove, Minn.), Kaileigh E. Rock (Saint Paul, Minn.) and Jean M. Carver (Blaine, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A medical system includes an implantable medical device that carries a first electrode on a distal end of the implantable medical device and a return electrode. The implantable medical device is configured to be positioned within a heart. The implantable medical device further includes a leadlet including a proximal end and a distal end. The proxima...