Magentic Device "Magnamosis" developed to replace stitches and staples

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The magnetic compression anastomosis (magnamosis) device is a safe and effective means of sutureless full-thickness intestinal anastomosis with serosal apposition in a pig model. Gradient compression is superior to uniform compression. This technique is compatible with endoscopic and natural orifice approaches.                  

            Surgery often involves tying the ends of blood vessels or other structures together until they naturally fuse. This connection is called an anastomosis and is usually done with staples or stitches. Anastomoses are most commonly used in bowel surgery and weight-loss procedures for obese patients.A magnetic doughnut-shaped device has been developed that could be the end of stitches and staples. It’s being tested in a trial in the U.S. after results from animal studies suggested it could be highly effective, the Daily Mail reported.

             The new device holds the two ends with a strong magnetic bond that researchers believe leads to a more secure anastomosis and faster healing and it is safer than standard techniques, as it can be done using less invasive surgery, meaning a lower risk of complications such as leaks. It’s also said to be cheaper. The new device, the Magnamosis, is a method of connecting the pieces using the attraction between two magnets, rather than staples or stitches. It consists of two ring magnets,each 23mm in diameter, which have concave or convex surfaces so that they fit snugly against each other.

   A series of animal studies have shown that it is reliable and effective, and it is now being used in a clinical trial with patients for the first time. Ten patients who have planned intestine surgery which requires an anastomosis will have it done using the Magnamosis device. They’ll be monitored for two years to check how good the connection is and to look for side effects such as fevers and leaks.

        An ideal anastomosis between hollow viscera should be easily performed, strong, and operator independent. We hypothesized that transluminal attraction between magnets in the intestine could be harnessed to create an intestinal compression anastomosis (magnamosis) with these characteristics. We further hypothesized that variation of attraction force and geometry of compression would affect the quality of the intestinal anastomosis.