The Microvascular Anastomotic System (3M coupler) uses a friction-fit union of implant rings composed of high-density polyethylene and stainless-steel pins. Several reports have described equal or greater patency rates, as well as more rapid performance, using the device, compared to conventional suturing techniques. Eighty-nine patients, who underwent head and neck surgery with free-tissue transfers, using the Microvascular Anastomotic System, were evaluated. A hundred and twenty-one venous anastomoses were done using the device. All but one was done in an end-to-end manner Arteries were anastomosed with a conventional suture technique. The flap survival rate was 100 percent. The authors conclude that the device is reliable and time-sparing for end-to-end venous anastomoses in head and neck reconstruction.
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