ALEXANDRIA, Va., June 4 -- United States Patent no. 12,318,187, issued on June 3, was assigned to NuVasive Specialized Orthopedics Inc. (San Diego).

"Devices and methods for non-invasive implant length sensing" was invented by Scott Pool (Laguna Hills, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device for the non-invasive sensing of the length of an implantable medical device includes an implantable medical device having first and second portions moveable relative to one another and a layer of resistive material disposed on one of the first and second portions. A contact is disposed on the other of the first and second portions, the contact being in sliding contact with the layer of resistive ma...