Directional disintegrating traceable intestinal anastomosis stent

Abstract

The invention discloses a directional disintegrating traceable intestinal anastomosis stent, which comprises a through tube which is made from a human-acceptable and degradable material, wherein the middle of the through tube is of a tubular structure, and two ends are gradually expanded to form trumpet-shaped openings; bunch grooves or convex rings for tying intestinal broken ends are arranged on the joints of the tubular middle of the trumpet-shaped opening; a creeping anastomosis section for the intestinal broken ends on two sides is arranged in the middle of the through tube; annular grooves in circumferential direction are marked in the middle and in two ends of the through tube; and barium sulfate is contained in material. The stent can gradually break according to a pre-designed scheme, so as to enhance the supporting capacity thereof, to reduce the occurrence of leakage or stenosis of anastomosis and additionally to enhance controllability over a stent splitting process, and the stent can improve foreseeability when designing; and the stent can be developed through X radiography.

Description

(1) Technical field [0001] The invention relates to a bracket for colon anastomosis. (2) Technical background [0002] Traditional methods of colon anastomosis mainly include manual suture anastomosis and stapler anastomosis. Manual suture anastomosis is an anastomosis method with a long history. It is done manually with silk thread or absorbable thread. The operation is cumbersome, the anastomosis time is long, and there is a certain incidence of anastomotic leakage. However, this anastomosis method is low in cost, especially in economically underdeveloped areas. It is still the main method of colon anastomosis. The stapler anastomosis method is to use a stapler to complete colon anastomosis. The anastomosis method is simple and the anastomosis time is short, but the stapler is expensive. After anastomosis, metal foreign bodies will remain in the abdominal cavity for life, and an additional stapler insertion port needs to be opened to increase trauma. Since the contents o...

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Problems solved by technology

5. In case of anastomotic leakage or bowel perforation, the stent can safely achieve one-stage repair, but the incidence of re-leakage after primary repair in the previous method is extremely high, and only one-stage fistula can be performed, and second-stage intestinal anastomosis can be performed.

[0006] However, the degradation process of degradable anastomotic stents in the human body is random and uncontrollable

If there are non-circumferential cracks in the bell mouth and the tubular middle during the degradation process, it will cause premature collapse, causing the third intestine and the anastomosis to lose support, causing anastomotic leakage, infection, adhesion and other accidents

[0007] In addition, the material of the existing biodegradable anastomotic stent cannot be developed on X-rays, which makes it impossible for doctors to understand the status of the stent in the human body, which is not conducive to treatment

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