ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,465,343, issued on Nov. 11, was assigned to NuVasive Inc. (San Diego).

"Tissue retraction system" was invented by Byron Riemhofer (San Diego), Andrew Morris (San Diego) and Steven Lillig (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tissue retraction system comprising a drive gear coupled to a shaft. The tissue retraction system includes a first plurality of linking members located along a second axis and configured to rotate along the second axis based on contact with the drive gear as the drive gear is rotated. The tissue retraction system includes a linking member selector configured to rotate along the first axis, wherein the linking m...