Tenon Medical is a Los Gatos, California medical device company that built the Catamaran SI Joint Fusion System, a patented, less-invasive way to fuse the sacroiliac joint with a single titanium implant placed along an inferior-posterior trajectory. Founded in 2012 and public on the Nasdaq since 2022 (TNON), Tenon targets the often-overlooked SI joint, a frequent and hard-to-diagnose source of chronic lower-back pain. In 2025 it expanded into a multi-product sacro-pelvic platform by acquiring the SiVantage SImmetry technology portfolio.
Robert K. Weigle is a medical device and diagnostics executive with more than 25 years of experience taking healthcare products from pre-clinical research to commercial launch. He is CEO of NOW Diagnostics, an independent board member of Tenon Medical, and a former entrepreneur-in-residence at DigitalDx Ventures. He led Benvenue Medical as CEO for over a decade, raising more than $200 million and launching spine devices in two markets, and later ran saliva-based diagnostics companies focused on cancer detection. His career spans Fortune 500 names like Johnson & Johnson and Baxter as well as a string of venture-backed startups.