Gastrointestinal Anastomosis with the Nickel‐Titanium Double Ring

Abstract

We used a dog model to test the safety and effectiveness of sutureless gastrointestinal anastomoses (n = 23) (end-to-end, end-to-side, or side-to-side) with the nickel-titanium double ring with temperature-dependent shape memory. Results were compared to conventional hand-sutured anastomoses (n = 5). Examination performed after 2 weeks' follow-up showed no leaks and no difference in return of bowel function between the experimental groups and the control group. Microscopic studies showed a complete epithelial lining and perfectly functioning anastomoses. We conclude that the nickel-titanium double-ring device may have an important place in the armamentarium of the gastrointestinal surgeon.

A Simple Method of Intestinal Anastomosis (Ileocolostomy) in Rats

“…For example, a reported end-to-end anastomosis in a rat small intestine was carried out with 8 interrupted stitches [15], and sleeve anastomosis with more than 8 interrupted sutures [2,25]. In sutureless anastomosis with fibrin glue, although the thread is removed from the anastomotic site in a few minutes, the thread is required at least temporarily [16,18]. Other sutureless methods using some special devices are being developed, but the devices were designed for humans, not for small laboratory animals such as rats or mice [4-6, 9, 13, 17].…”

“…The surgical procedures are always required to be simple, rapid and safe. memory [16], and a biofragmentable tube with elastic rings [2]. Thus, suturing by hand is still being applied in surgery, even though many stitches and fine techniques are required for this method [3,11,15,18,19,25].…”

Two-way shape memory-clips for colonic anastomosis

“…The new anastomosis method based on compression clip which operate on the basis of one-way shape memory effect was studied and described in [2][3][4][5]. A new concept concern the possibility of using the superelastic effect in clips for gastrointestinal tract anastomosis was performed in [6].…”

A Simple Method for Sutureless Gastrointestinal Anastomosis in Rat.

“…stent placement device and fibrin glue [3], staples with a stapler [4,9,11], biofragmentable ring with inserting device and purse-string suture [5,6], metal ring with temperature-dependent shape memory [8], and fibrin glue with some sutures [3,6,11].…”

“…Also it requires less skill to perform. Moreover, our method only uses a simple tubing stent without any other par- [2][3][4][5][6][8][9][10][11]. This sutureless method is effective in preparing anastomosis in the gastrointestinal tract and may be applicable to physiological, nutritional and surgical experiments in laboratory animals as well as for the treatments of animals.…”