Magnetic compression anastomosis for minimally invasive surgery

The Problem

An anastomosis is the joining of two hollow or tubular structures. Surgeons perform thousands of anastomosis procedures every week in the United States alone, most commonly for bowel obstruction and in bariatric surgery for obesity. These procedures presently require either open or laparoscopic surgery using staples or sutures to form the anastomosis. 

For babies and children with congenital gastrointestinal anomalies like esophageal atresia, duodenal atresia, and short bowel syndrome, the possibility of making anastomoses minimally invasively without sutures or staples offers many advantages.

The Solution

Magnamosis is a method of connecting pieces of intestine or other hollow viscerausing the attractive force between two magnets – without the use of staples or sutures. The procedure involves placing a parabolic magnet endoscopically in the lumen of each structure to be joined, and then simply allowing the attractive force between the magnets to create a

compression anastomosis by tissue remodeling. When the anastomosis has formed after 4 to 6 days, the magnets are expelled naturally through the large intestine. In some instances, this technique would allow anastomoses to be created without an operation.

Under Development


We are currently working on optimizing Magnamosis for more uses and on modifying the configuration of the magnets to produce larger anastomoses. We are studying the stress fields produced as the anastomosis forms in order to determine which magnet configuration produces the best anastomosis as well as to gain insight into the biological mechanism of anastomosis formation.