Magnetic Compression Anastomosis With Immediate Luminal Patency in Colorectal Surgery: First-in-Human Safety and Feasibility Evaluation of a Self-forming Magnet System

BACKGROUND: Classical colorectal anastomoses performed with sutures or staples rely on tissue penetration, which may serve as a nidus for microabscess formation and contribute to anastomotic leakage. Magnetic compression anastomosis offers a completely non-penetrating alternative for tissue approximation. However, earlier magnetic compression anastomosis systems required delayed luminal patency, rendering them unsuitable for colorectal surgery where immediate bowel continuity is essential. IMPACT OF INNOVATION: A novel magnetic compression system engineered to maintain immediate luminal patency has been developed, overcoming a key limitation of prior magnetic compression anastomosis platforms. This innovation enables intracorporeal colorectal anastomosis using a non-penetrating technique compatible with minimally invasive surgery and may represent a biologically distinct approach to anastomotic healing. TECHNOLOGY MATERIALS AND METHODS: This was a first-in-human, early-phase prospective safety and feasibility study conducted at a single tertiary referral center for minimally invasive colorectal surgery. A consecutive series of 25 adult patients undergoing elective laparoscopic or robotic colorectal resection received intracorporeal anastomosis using a self-forming magnetic compression system following a standardized operative protocol. The primary outcome was anastomotic leak within 30 postoperative days. Secondary outcomes included technical feasibility, adverse events, device performance, and anastomotic patency assessed during 60 days of follow-up. PRELIMINARY RESULTS: All procedures were completed using minimally invasive techniques without conversion to open surgery. Intracorporeal magnetic compression anastomoses were technically successful in all cases. No anastomotic leaks were observed within 30 days. Adverse events occurred in 6 patients (24%), all classified as Clavien–Dindo Grade I and managed conservatively. Postoperative imaging and/or endoscopic evaluation demonstrated complete anastomotic patency and healing in all patients, with no evidence of stenosis, obstruction, or delayed transit during 60 days of follow-up. CONCLUSIONS AND FUTURE DIRECTIONS: In this first-in-human experience, intracorporeal magnetic compression colorectal anastomosis using the self-forming system was feasible and demonstrated a favorable short-term safety profile, with consistent anastomotic patency and absence of leaks. Although limited by small sample size, single-center design, and lack of a comparator group, these results support further prospective and comparative studies to define the role of magnetic compression anastomosis in colorectal surgery. See New Technology Video . ClinicalTrials.gov Registration ID: NCT06915818