Inner coverage membrane for duodenum

Abstract

The invention provides an inner coverage membrane for duodenum. The inner coverage membrane is obtained from biocompatibility materials, and is formed by an elastic kettle belly part and a tubular part, wherein the kettle belly part is arranged in a sphere part of the duodenum, the tubular part can be extended to jejunum, the kettle belly part comprises a wave-shaped, a V-shaped, a ladder-shaped or a wall-shaped elastic circle which is continuously wound, the elastic circle is made of memorized or non-memorized biocompatibility materials, a peak, a valley and a curved angle of the elastic circle are single-circled bending springs and are with an outward anchor and hook, a retrieve thread is wound on the single-circled bending spring on the lower edge in a penetrating manner, the upper edge of the kettle belly part is a wave-shaped, a V-shaped, ladder-shaped or a wall-shaped elastic membrane, the elastic circle and the overall kettle belly part move along with the duodenum and the sphere part, and the kettle belly part and the tubular part can be closed or folded into a sphere shape, a cylindrical shape, a capsule shape or a spindle shape outside a human body. The single-circled bending springs have the advantages of strong elasticity, weak sharp injury, excellent fixing performance for the retrieve thread attached on the single-circled bending spring, and benefit for an anatomized structure and basic physiologic functions of the duodenum. The inner coverage membrane for duodenum can be prepared into a medical appliance for preventing and curing obesity and diabetes.

Description

technical field [0001] The invention relates to a medical device built in the digestive tract, in particular to a duodenal inner covering film for preventing and treating obesity and diabetes. Background technique [0002] Gastric bypass surgery treats obesity. Recently, it has been found that obese patients not only lose weight significantly after undergoing this operation, but also relieve their concurrent type 2 diabetes (Chinese Journal of Diabetes, 2011, 3(3):205-208): there is no need for insulin injections after surgery, and there is no need for Taking a variety of drugs can solve blood sugar problems, and diabetes complications such as high blood pressure, obesity, and blood lipid disorders have been significantly improved. Analysis of 22,094 cases of gastric bypass surgery: 84% of type 2 diabetes were completely reversed after surgery, and most patients stopped oral medication or insulin therapy before discharge (Chinese Medical Science, 2011, 1(21): 3-5) . Forei...

AI Technical Summary

Problems solved by technology

The existing technology (utility model patent "duodenum-jejunum built-in sleeve") only considers "smooth surface, soft and dense" in terms of hose material, and does not involve the adaptability and elasticity of the ring bracket to the movement of the duodenum bulb stretching, and does not involve the use of elastic materials to prepare hoses; the inelastic tight mouth line "fixed" on the duodenal bulb along the "top of the ring bracket" further limits the effect of the ring bracket on the movement of the duodenal bulb adapt

This prior art (utility model patent "duodenum-jejunum built-in cannula") is compared with the prior art of the aforementioned invention patent "duodenal cannula and its conveyor", because of its ring-shaped bracket and its pointed The stabbing claw is only located at the duodenal bulb, although it does not block the duodenal papilla, which is the common opening of the bile duct and pancreatic duct at the lower end of the descending duodenum, but if placed on the upper edge of the duodenal bulb, when When the expansion or retraction of the gastric pylorus affects the movement of the duodenal bulb immediately below it (Zhou Lu, Ke Meiyun: "Gastrointestinal Dynamics: Basic and Clinical" pp. 381, 520, 522), the ring stent and its spiked fixed claws are bound to hinder the activity of the duodenal bulb, especially when the expansion of the gastric pylorus affects the activity of the duodenal bulb, the ring bracket and its spiked fixed claws cannot expand along the way, but penetrate into the duodenum The spiked fixed claws in the mucosa of the intestinal bulb pull the mucosal tissue of the duodenal bulb inward and towards the center, which is contrary to the activities of other tissues such as the submucosal muscle tissue of the duodenal bulb that expands centrifugally outward. , this ring-shaped bracket that cannot change or changes little along the trend and its spiked fixed claws, when the expansion or retraction of the gastric pylorus affects the movement of the duodenal bulb immediately below it, it will affect the duodenal bulb is damaged; if it is placed on the lower edge of the duodenal bulb, the expansion or retraction of the gastric pylorus will affect the lower edge of the duodenal bulb less than the upper edge of the duodenal bulb, but even Neglecting the damage of the ring stent and its spiked claws to the mucosa of the duodenal bulb, the original covering effect on the duodenal bulb disappears

[0006] Existing technology (utility model patent "duodenum-jejunum built-in sleeve", application date December 6, 2010, authorization announcement date September 2011 28th) the metal wire of the ring support is V-shaped continuously, the elasticity of this shape is weaker than that of the same material and the same preparation method with a single coil spring in the V-shaped peaks and corners, the sharpness of this shape The damage is stronger than that of the same material and the same preparation method with single coil springs at the V-shaped peaks and valleys and curved corners. The "scissors open" of this shape is also poor in fixing the fastening line or recovery line attached to it. With the same material and the same preparation method, there is a single-coil spring shape on the V-shaped peaks and valleys and curved angles, and the fastening line or recovery in the duodenal lumen that stretches and contracts in the transverse diameter and transports the chyme in the longitudinal diameter The fixation of the thread is poor, which is not conducive to its anatomical structure and basic physiological functions

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