GI Windows Surgical reports first U.S. pivotal magnetic anastomosis trial with no leaks or obstructions

GI Windows Surgical said its first U.S. multicenter pivotal study of magnetic compression anastomosis enrolled 79 patients across six centers and met its primary safety endpoint. The publication in Surgical Endoscopy adds clinical data on a minimally invasive approach designed to create an immediately functional lumen for small-bowel anastomoses.

Why it matters: - Gastrointestinal anastomotic complications remain a major surgical challenge despite advances in minimally invasive surgery and stapling. - The FLOWS study adds U.S. pivotal-trial data for a magnetic compression approach designed to create an immediately functional lumen while tissue heals. - The results could shape future evaluation of magnetic anastomosis in bariatric, foregut and colorectal surgery.

What happened: - GI Windows Surgical announced the publication of the FLOWS trial in Surgical Endoscopy. - The prospective, multicenter, single-arm FDA Investigational Device Exemption pivotal study evaluated the Flexagon Self-Forming Magnet system with OTOLoc. - The study focused on small-bowel anastomoses created with a minimally invasive technique. - The trial enrolled 79 patients across six U.S. centers. - All 79 patients met the primary endpoint of successful magnetic anastomosis creation without reoperation related to the procedure, device or target anastomosis through 60 days.

The details: - The study reported no small-bowel or large-bowel obstruction. - The study reported no anastomotic bleeding. - The study reported no anastomotic leak. - The study reported no reintervention and no deaths. - No serious device-related adverse events were reported. - The publication concluded the multicenter study showed technical feasibility, clinical success and a short-term safety profile for magnetic anastomosis with an immediately functional lumen in laparoscopic small intestinal anastomoses. - The full manuscript is titled "The functional lumen opening with self-forming magnetic anastomosis (FLOWS) study: results from the North American pivotal trial." It is available in Surgical Endoscopy under DOI 10.1007/s00464-026-13211-8. - Preclinical studies cited in the publication found less fibrosis, tissue distortion, bacterial ingress and chronic inflammatory change than sutured or stapled anastomoses, with burst pressures approaching native tissue strength.

Between the lines: - Erik Wilson, GI Windows Surgical chief medical officer, called the technology the first major disruptive technology for surgical anastomoses in more than 50 years. - Andre Teixeira, an author of the study and investigator at Orlando Health Weight Loss and Bariatric Surgery Institute, said the consistency across six U.S. centers matters because every participating investigator used the technology in patients for the first time. - Shinil K. Shah, the study's corresponding author and a trial investigator at McGovern Medical School at UTHealth Houston, said the results support an immediately functional magnetic anastomosis and provide a base for continued evaluation. - The multicenter setup is notable because it tested whether the technique could work across different surgeons, institutions and workflows, not just in a single expert center.

What's next: - GI Windows Surgical will likely use the publication to support broader clinical and regulatory discussion around magnetic compression anastomosis. - The company continues to develop magnetic compression platforms for gastrointestinal surgery. - Future work may extend the approach across bariatric, foregut and colorectal procedures.

The bottom line: - The FLOWS trial gives U.S. pivotal evidence that a magnetic anastomosis system can create small-bowel connections with strong short-term safety and no reported leaks, bleeding or obstructions in this study.