SAN CARLOS, Calif., July 16, 2020 /PRNewswire/ — Empirical Spine, Inc., maker of the LimiFlex Paraspinous Tension Band, today announced completion of enrollment in its U.S. IDE trial studying the use of LimiFlex with a decompression for patients suffering from degenerative spondylolisthesis with lumbar spinal stenosis.  The trial compares outcomes of patients who receive either LimiFlex or …