Gastric deflector and its digestive tract stent

Abstract

The invention discloses a gastric diversion apparatus and a digestive tract stent thereof. The digestive tract stent has a pre-expanded shape and a post-expanded shape, and the digestive tract stent comprises an upper bracket, a lower bracket and connecting pieces; when the digestive tract stent is represented in the post-expanded form, a first opening is formed in the top of the upper bracket anda second opening is formed in the bottom of the upper bracket; the lower bracket is arranged at the lower side of the upper bracket; a third opening is formed in the top of the lower bracket and a fourth opening is formed in the bottom of the lower bracket; the upper bracket and the lower bracket are connected via the plurality of connecting pieces; a membranous canal is connected to the fourth opening of the lower bracket, and the upper bracket and the lower bracket, which are expanded, cannot pass through an expanded pyloric ostium stomach; and the connecting pieces can pass through the pyloric ostium stomach or can be inserted in the pyloric ostium stomach. According to the scheme, the stent is fixed in two parts, wherein one part is fixed to the pyloric ostium stomach so as to firmlylocate the upper end of the membranous canal in the digestive tract during peristalsis of the digestive tract and the other part is fixed to duodenal bulb so as to prevent a circumstance that food cannot flow in accordance with a designed channel since the lower section of the extension membranous canal can return into a stomach quite easily during reversed peristalsis of the digestive tract.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a gastric deflector and a digestive tract stent for treating endocrine diseases (such as diabetes, pancreatic islet dysfunction, obesity, etc.) or lower digestive tract diseases (such as inflammation, etc.). Background technique [0002] It is known that diabetes is a disease that has gradually been paid attention to by people in recent years. It is one of the diseases of the rich and the rich. It is derived from the continuous improvement of living standards in modern civilized society. , overnutrition, reduced activity, resulting in a non-infectious epidemic, specifically, diabetes refers to a metabolic disease characterized by high blood sugar. It results from defective insulin secretion or impaired biological action, or both. Diabetes can lead to chronic damage and dysfunction of various tissues, especially eyes, kidneys, heart, blood vessels, and nerves. Diabetes i...

AI Technical Summary

Problems solved by technology

However, the above-mentioned intragastric device has the following problems: one is that the memory alloy material with self-expanding shape has certain mechanical force and weight. It will compress the gastric mucosa in the stomach, which is very easy to cause peptic ulcer; second, the food stays in the balloon for a long time, although it can slow down the emptying of the stomach, it is easy to cause bacterial growth and cause inflammation; third, The device is not fixed in the pyloric orifice or the duodenal bulb, and the extended membrane tube at the lower part is very easy to return to the stomach due to the reverse peristalsis of the digestive tract, causing food to not flow according to the designed channel; Large, especially after the content of food, the foreign body sensation in the pylorus is obvious and it is easy to cause symptoms such as lax closure of the pylorus and bile reflux

The stent is used for the treatment of stenosis or obstruction of the digestive tract, which can expand and support the stenosis. It is generally implanted in the digestive tract as an independent product without connecting the membrane tube. Because of its high support strength and not easy to deform, it is Cannot be used in the pyloric opening of the stomach and cannot be used as a gastric diverter

Images