Non vascular stent
Gastrointestinal stent is a metal mesh made of metal memory alloy that can expand the digestive tract. The main function of gastroIntestinal Stentis to use the stent to expand the blocked pipeline when there is obstruction in the gastrointestinal tract, allowing patients to restore their diet, improve their quality of life, increase nutrition, and extend their lifespan. Commonly used gastrointestinal stents include esophageal stents, cardia stents, intestinal stents, etc. Stents are usually made of metal memory alloys and have good compatibility with the human body. In order to prevent tumor growth and intestinal contents from leaking out of the stent, a thin film is usually covered on the inner surface of the stent. Gastrointestinal stents are usually recyclable. When patients experience pain or discomfort during stent placement and cannot tolerate it, the stent can be removed under endoscopy.
(1) Made of titanium nickel alloy, it has excellent biocompatibility and corrosion resistance, as well as memory properties and superelasticity. At a certain temperature, it is easy to put into the insertion device. By releasing the stent inside the body, it can gradually return to its original shape, generating a sustained and gentle radial expansion force that acts on the inner wall of the intestine, restoring patency to the narrowed area.
(2) The stent has good superelasticity at body temperature and can deform with normal intestinal peristalsis, keeping the intestine unobstructed and comfortable.
(3) One or both ends of the intestinal stent are cylindrical in the shape of a ball or mushroom head (as shown in Figure 4), with smooth ends and no sharp corners or burrs, to significantly reduce damage to the intestinal wall.