Intestinal stent

The intestine is the longest duct in the digestive system, including the duodenum, small intestine, cecum, colon, and rectum, with a total length of approximately 7 meters. The small intestine curves back to the center of the abdomen and is surrounded by the colon. The surface of the small intestine mucosal layer is covered with intestinal villi, mainly for the digestion and absorption of food. Various digestive juices break down chyme into glucose and amino acids in the small intestine, allowing food to be digested and absorbed. The remaining waste forms feces, which are stored in the left colon and excreted from the body.

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.

Intestinal stents are generally made of metal, with titanium nickel alloy being the most commonly used. Titanium nickel alloy has excellent biocompatibility and corrosion resistance, and is widely used in medical fields such as artificial joints, bone plates, and cardiac occluders. The intestinal stent made of titanium nickel alloy has excellent biocompatibility and corrosion resistance, as well as memory properties and superelasticity.

The stent is in a softened state in an environment of 0-10 ℃ (or ice water), and can change shape within a certain range, making it easy to place into the introducer. When the ambient temperature is above 33 ℃, releasing the stent can gradually restore its original shape, generating a continuous and gentle radial expansion force that acts on the inner wall of the intestine, restoring patency to the narrowed area. The stent has good superelasticity at body temperature and can deform with normal intestinal peristalsis, keeping the intestine unobstructed and comfortable.