Lead Erosion Incidents Were Among Its Large Diameter Riata. Medical device maker St. Jude Medical Inc. says a new study finds that most the reported Riata defibrillator lead erosion incidents were among its larger-diameter wires. The Riata and Riata ST leads were recalled last year after they were associated with a high rate of … [Read more...] about Riata Leads Most Pone to Erosion