Implantation instrument for limiting food flow in duodenum

Abstract

The invention provides an implantation instrument for limiting food flow in duodenum, and relates to the field of medical instruments. Comprising a support, a support membrane tube and a valve element shaft membrane tube, the support comprises a support body and anchor thorns arranged on the support body, the support membrane tube covers the outer side of the support, the anchor thorns penetrate out of the support membrane tube and are located on the outer side of the support membrane tube, the support membrane tube is connected with the valve element shaft membrane tube, and a fluid channel is formed between the support membrane tube and the valve element shaft membrane tube; a valve element air bag is arranged on the valve element shaft membrane tube and connected with a gas generating assembly capable of generating gas under preset conditions and inputting the gas into the valve element air bag. According to the invention, the opening action of the air bag is realized by utilizing the gas generation assembly, so that the implantation is facilitated, the tedious operation and inconvenience caused by a secondary inflation mode are avoided, the treatment process is simplified, the additional trauma and pain to a patient are reduced, and the infection risk and the probability of occurrence of other complications are also reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an implant device for restricting food flow in the duodenum. Background Art

[0003] Surgical weight loss has been proven to have a good therapeutic effect on morbid obesity and the accompanying type 2 diabetes. However, surgical treatment is not suitable for all obese patients. On the one hand, some patients are not suitable for surgery due to physical conditions and other factors. On the other hand, even some candidates who meet the surgical conditions may not be willing to choose the surgical route easily due to surgical risks, postoperative recovery and other issues. In recent years, endoscopic bariatric and metabolic therapy (EBMT, such as intragastric balloon, duodenal jejunal cannula, etc.) as a non-surgical weight loss method has shown excellent efficacy in the field of weight loss and has been recognized.

[0004] It is known that there is a study on the intracavitary device SatiSphere, which consists of a nickel wire and several mesh balls, which can conform to the structure of the duodenum and anchor itself, but the displacement rate of this product is as high as 47.6%, and the mesh balls seriously affect the convenience of insertion. Therefore, it is urgent to develop a more efficient, safe and stable treatment method to provide better treatment options for obese patients. Summary of the invention

[0005] The purpose of the present invention includes providing an implant device for restricting food flow in the duodenum, which can overcome the problem of inconvenience in implantation of an intracavitary device composed of a nickel wire and a plurality of mesh balls.

[0006] The embodiments of the present invention can be implemented as follows:

[0007] In a first aspect, the present invention provides an implant device for restricting food flow in the duodenum, comprising a stent, a stent film tube and a valve core shaft film tube, wherein the stent comprises a stent body and an anchor thorn arranged on the stent body, the stent film tube covers the outside of the stent, and the anchor thorn penetrates the stent film tube and is located outside the stent film tube, the stent film tube is connected to the valve core shaft film tube, and a fluid channel is arranged between the stent film tube and the valve core shaft film tube;

[0008] The valve core shaft film tube is provided with a valve core airbag, and the valve core airbag is connected to a gas generating component which can generate gas under preset conditions and input the gas into the valve core airbag.

[0009] In an optional embodiment, there are more than two valve core airbags, and the more than two valve core airbags are sequentially arranged along the valve core shaft film tube, each valve core airbag is connected to the valve core shaft film tube through an air injection hole, and the gas outlet end of the gas generating assembly is connected to the valve core shaft film tube;

[0010] Or, there are more than two valve core airbags, and the more than two valve core airbags are arranged in sequence along the valve core shaft film tube, and each of the valve core airbags is correspondingly provided with a gas generating component;

[0011] In an optional embodiment, the valve core airbag is streamlined.

[0012] In an optional embodiment, the material of the valve core shaft film tube is selected from at least one of polyurethane (PU), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), polyamide (PA), polyvinyl alcohol (PVA) freeze-thaw film, expanded polytetrafluoroethylene (ePTFE), fluorinated ethylene propylene copolymer (FEP) and silica gel;

[0013] And / or, the material of the valve core airbag is selected from at least one of polyvinyl alcohol (POLYVINYL ALCOHOL, PVA) freeze-thaw film, silicone, polyurethane (Polyurethane, PU), low-density polyethylene (LOW-DENSI TY POLYETHYLENE, LDPE) and linear low-density polyethylene (LINEAR LOW-DENSI TY POLYETHYLENE, LLDPE).

[0014] In an optional embodiment, a weak connection is adopted between the valve core airbag and the valve core shaft film tube;

[0015] And / or, the valve core shaft membrane tube includes shaft tube sections that are sequentially connected through valve core airbags, and a diaphragm is arranged in the shaft tube section with both ends connected to the valve core airbags.

[0016] In an optional embodiment, the gas generating assembly includes a first chamber for containing a first reactant and a second chamber for containing a second reactant. The first chamber and the second chamber are separated by a second isolation device that can be dissolved under preset conditions. The first reactant and the second reactant can react and generate gas after contact.

[0017] In an optional embodiment, the first reactant is a liquid, the second reactant is a solid, and the gas outlet end of the gas generating component is located on the second chamber;

[0018] And / or, the gas outlet end of the gas generating assembly is provided with a breathable membrane or a breathable hole;

[0019] And / or, the second isolation device is a disintegrable binding wire or a disintegrable clip that can dissolve in intestinal fluid.

[0020] In an optional embodiment, the first reactant is selected from at least one of citric acid solution and acetic acid, and the second reactant is selected from at least one of sodium bicarbonate and potassium bicarbonate;

[0021] And / or, the first reactant is a solvent, and the second reactant is a first pressed tablet and a second pressed tablet that can be dissolved in the solvent.

[0022] In an optional embodiment, an arc-shaped flow dividing portion is provided at the end of the valve core shaft film tube close to the bracket;

[0023] And / or, the support membrane tube is connected to the valve core shaft membrane tube via a connecting membrane, and the fluid channels are symmetrically arranged along the valve core shaft membrane tube.

[0024] In an optional embodiment, the material of the connecting film is selected from one or more of polyurethane (PU), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), polyamide (PA), polyvinyl alcohol (PVA) freeze-thaw film, expanded polytetrafluoroethylene (ePTFE), and fluorinated ethylene propylene copolymer (FEP);

[0025] And / or, the material of the stent membrane tube is selected from one or more of polyurethane (PU), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), polyamide (PA), polyvinyl alcohol (PVA) freeze-thaw film, expanded polytetrafluoroethylene (ePTFE), and fluorinated ethylene propylene copolymer (FEP);

[0026] And / or, the material of the bracket is nickel-titanium alloy.

[0027] The beneficial effects of the implant device for restricting food flow in the duodenum provided by the embodiment of the present invention include:

[0028] This application uses a gas generating assembly to realize the opening action of the airbag, which is convenient for implantation while avoiding the cumbersome operation and inconvenience caused by the secondary inflation method. This built-in gas generating assembly makes the airbag activation process more convenient and efficient, greatly simplifies the treatment process, reduces additional trauma and pain to the patient, and also reduces the risk of infection and other complications that may be caused by the secondary inflation operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the structure of an implant device for restricting food flow in the duodenum provided in an embodiment of the present application from a first perspective;

[0031] Figure 2 A schematic diagram of the structure of the bracket provided in the embodiment of the present application from a first viewing angle;

[0032] Figure 3 A schematic diagram of the partial structure of the implant device for restricting the flow of food in the duodenum provided in this embodiment;

[0033] Figure 4 A schematic diagram of the structure of the valve core airbag provided in this embodiment;

[0034] Figure 5 A schematic diagram of the structure of the gas generating assembly provided in an embodiment of the present application.

[0035] Icons: 1- bracket; 101-anchor barb; 102- bracket body; 2- bracket membrane tube; 3-connecting membrane; 4-valve core shaft membrane tube; 401-injection hole; 5-valve core airbag; 6-gas generating assembly; 601-air vent; 602-second chamber; 603-second isolation device; 604-first chamber. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0040] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0041] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0042] An embodiment of the present invention provides an implantable device for restricting food flow in the duodenum, such as Figure 1-3 As shown, it includes a stent 1, a stent film tube 2 and a valve core shaft film tube 4, the stent 1 includes a stent body 102 and an anchor thorn 101 arranged on the stent body 102, the stent film tube 2 covers the outside of the stent 1, and the anchor thorn 101 passes through the stent film tube 2 and is located outside the stent film tube 2, the stent film tube 2 is connected to the valve core shaft film tube 4, and a fluid channel is arranged between the stent film tube 2 and the valve core shaft film tube 4;

[0043] The valve core shaft film tube 4 is provided with a valve core airbag 5 , and the valve core airbag 5 is connected to a gas generating assembly 6 which can generate gas under preset conditions and input the gas into the valve core airbag 5 .

[0044] In some embodiments of the present application, the support 1 is specifically as follows Figure 2 As shown, it is W-shaped, with an anchor barb 101 fixed on the upper part, which can penetrate into the duodenal bulb to fix the bracket 1. The bracket 1 is located in the duodenal bulb as a whole to provide a fixing force for the valve body to resist the impact of chyme on the valve core airbag 5. Other structures of the bracket 1 can also be used in this application. Figure 2 The stent 1, with its anchor thorn 101 structure, can fit closely with the surrounding tissue, thereby achieving a stable and reliable fixation effect, effectively preventing the stent 1 from being displaced or falling off in the body, and providing a stable basic support for the subsequent treatment process.

[0045] In some embodiments of the present application, the stent membrane tube 2 is as follows Figure 3 As shown, it is a double-layer structure, covering all areas of the bracket 1 except the rivet spurs of the bracket 1, and the lower part is connected to the valve core shaft membrane tube 4, and a fluid channel is set between the valve core shaft membrane tube 4 for the passage of chyme.

[0046] The valve core shaft in the present application is provided with a valve core airbag 5 and a gas generating assembly 6 capable of inflating the valve core airbag 5. Before the implant device for restricting the flow of food in the duodenum is implanted into the body, the gas generating assembly 6 does not generate gas, and the valve core airbag 5 is not inflated, and the volume occupied is small, which is conducive to the rapid and smooth implantation of the implant device for restricting the flow of food in the duodenum into the body. After the implantation is completed, the implant device for restricting the flow of food in the duodenum is in the duodenal environment, and the gas generating assembly 6 can be triggered by preset conditions such as pH to start gas production to fill the valve core airbag 5, thereby achieving the purpose of hindering the flow of chyme and prolonging the residence time of chyme in the body. It should be noted that the gas generated in the gas generating assembly in the present application needs to be a gas that is non-toxic to the human body, such as carbon dioxide, because it may leak.

[0047] The present application utilizes the gas generating assembly 6 to realize the opening action of the airbag, which facilitates implantation while avoiding the cumbersome operation and inconvenience caused by the secondary inflation method. This built-in gas generating assembly 6 makes the airbag activation process more convenient and efficient, greatly simplifies the treatment process, reduces additional trauma and pain to the patient, and also reduces the risk of infection and other complications that may be caused by the secondary inflation operation.

[0048] In an optional embodiment, there are more than two valve core airbags 5, and the more than two valve core airbags 5 are arranged in sequence along the valve core shaft film tube 4, each of the valve core airbags 5 is connected to the valve core shaft film tube 4 through the gas injection hole 401, and the gas outlet end of the gas generating component 6 is connected to the valve core shaft film tube 4. Figure 4 As shown;

[0049] Alternatively, there are more than two valve core airbags 5 , and the more than two valve core airbags 5 are sequentially arranged along the valve core shaft membrane tube 4 , and each valve core airbag 5 is correspondingly provided with a gas generating assembly 6 .

[0050] The valve core shaft membrane tube 4 is a hollow circular long tube after inflation, the upper part of which is welded to the connecting membrane 3, and a number of valve core airbags 5 are dispersedly arranged in the middle part. The two ends of the valve core airbags 5 are welded to the outer side of the valve core membrane tube, and the valve core shaft membrane tube 4 is provided with an injection hole 401 corresponding to the middle area of ​​the valve core airbag 5 for inflating the valve core airbag 5. After all the valve core airbags 5 are inflated, they form an annular multi-stage throttling valve group together with the inner wall of the duodenum to slow down the speed of chyme passing through, thereby slowing down the emptying time of the stomach and duodenum, and indirectly achieving the effect of reducing food intake.

[0051] In an optional embodiment, the valve core airbag 5 is streamlined, which is beneficial to reducing the friction resistance of chyme passing through, guiding the chyme to flow through the annular gap between the valve core airbag 5 and the intestine, and reducing the risk of blockage.

[0052] In an optional embodiment, the material of the valve core shaft membrane tube 4 is selected from at least one of polyurethane (PU), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), polyamide (PA), polyvinyl alcohol (PVA) freeze-thaw film, expanded polytetrafluoroethylene (ePTFE), fluorinated ethylene propylene copolymer (FEP) and silica gel;

[0053] And / or, the material of the valve core airbag 5 is selected from at least one of polyvinyl alcohol (POLYVINYL ALCOHOL, PVA) freeze-thaw film, silica gel, polyurethane (Polyurethane, PU), low-density polyethylene (LOW-DENSI TY POLYETHYLENE, LDPE) and linear low-density polyethylene (LINEAR LOW-DENSI TY POLYETHYLENE, LLDPE).

[0054] In an optional embodiment, a weak connection is adopted between the valve core airbag 5 and the valve core shaft film tube 4;

[0055] In this way, when blockage occurs, the distal balloon can be sacrificed like a rocket to retain the remaining balloon, which can greatly reduce the patient's adverse reactions during implantation.

[0056] It should be noted that the weak connection can be formed by gelling and molding the raw material liquid for preparing the valve core airbag 5 on the valve core shaft film tube 4 to achieve the connection between the valve core airbag 5 and the valve core shaft film tube 4. Since the connection force between the valve core airbag 5 and the valve core shaft film tube 4 is weak, the valve core airbag 5 and the valve core shaft film tube 4 connected thereto can be separated when a blockage occurs and a large resistance is encountered.

[0057] In an optional embodiment, the valve core shaft membrane tube 4 includes shaft tube sections that are sequentially connected through the valve core airbags 5, and a diaphragm is provided in the shaft tube section that is connected to the valve core airbags 5 at both ends.

[0058] Since the air injection hole 401 may leak after the valve core airbag 5 is separated from the valve core shaft membrane tube 4 connected thereto, causing the airbag to deflate, a diaphragm is provided in the shaft tube section to prevent the remaining valve core airbag 5 from leaking and extend the residence time of the device in the body.

[0059] In an optional embodiment, if Figure 5 As shown, the gas generating component 6 includes a first chamber 604 for containing a first reactant and a second chamber 602 for containing a second reactant. The first chamber 604 and the second chamber 602 are separated by a second isolation device 603 that can be dissolved under preset conditions. The first reactant and the second reactant can react and generate gas after contact.

[0060] The reactants of the gas generating assembly 6 are separated by a second isolation device 603, so that the first reactant and the second reactant cannot contact each other. When the gas generating assembly 6 enters the duodenum, the second isolation device 603 will dissolve under this condition, so that the first reactant and the second reactant will contact each other and generate gas. The gas is directly injected into the valve core airbag 5 or injected into the valve core shaft membrane tube 4 and then enters the valve core airbag 5 through the gas injection hole 401 on the valve core shaft membrane tube 4.

[0061] It should be noted that the ratio and dosage of the first reactant and the second reactant in the present application and the size of the valve core airbag 5 need to be adjusted according to the specific conditions of the patient's duodenum, so that the air pressure in the valve core airbag 5 and the valve core shaft membrane tube 4 is maintained at a certain value, thereby maintaining a certain rigidity of the valve core airbag 5 without over-stimulating the duodenum and causing adverse reactions.

[0062] The present application can conveniently adjust the size of the airbag by accurately controlling the dosage of solid reactants and liquid reactants. In view of the individual differences in the physiological structure of the duodenal bulb of different patients, the present invention provides a variety of models of products, each model corresponding to reactants with different dosage combinations. In actual treatment, medical staff can accurately select a model that matches the specific size of the patient's duodenal bulb, thereby realizing a personalized and precise treatment plan. This personalized treatment method can not only significantly improve the treatment effect, but also effectively reduce the problems of excessive compression or loose fit of the patient's duodenal tissue caused by inappropriate airbag size, thereby minimizing the adverse reactions of the patient during the treatment process, such as pain, inflammation, gastrointestinal dysfunction, etc., promoting rapid recovery of patients after surgery, and improving the patient's quality of life and treatment experience.

[0063] In an optional embodiment, the first reactant is a liquid, the second reactant is a solid, and the gas outlet end of the gas generating assembly 6 is located on the second chamber 602;

[0064] And / or, the gas outlet end of the gas generating assembly 6 is provided with a breathable membrane or a breathable hole 601;

[0065] And / or, the second isolation device 603 is a disintegrable binding wire or a disintegrable clip that can be dissolved in intestinal fluid.

[0066] The separation standard of the second isolation device 603 is that liquid cannot pass through, and the separation standard of the air permeable membrane or air permeable hole 601 is that solid as the second reactant cannot pass through or only a small amount can pass through without affecting the expansion of the capsule.

[0067] In an optional embodiment, the first reactant is selected from at least one of citric acid solution and acetic acid, and the second reactant is selected from at least one of sodium bicarbonate and potassium bicarbonate;

[0068] And / or, the first reactant is a solvent, and the second reactant is a first pressed tablet and a second pressed tablet that can be dissolved in the solvent.

[0069] In an optional embodiment, an arc-shaped diversion portion is provided at the end of the valve core shaft membrane tube 4 close to the bracket 1, and the end of the valve core shaft membrane tube 4 is quasi-circular, which is beneficial to reduce the resistance to the passage of chyme and guide the chyme to flow to the outside of the valve core shaft.

[0070] In an optional embodiment, the support film tube 2 is connected to the valve core shaft film tube 4 through a connecting film 3, and the fluid channel is symmetrically arranged along the valve core shaft film tube 4. The connecting film 3 provides the valve body portion at the rear end with a connecting force with the support 1. At the same time, a plurality of special-shaped holes are left on the surface of the connecting film 3 to serve as fluid channels. The symmetrical arrangement of the fluid channels along the valve core shaft film tube 4 is conducive to uniform force on the support 1. The ends of the connecting film 3 and the valve core shaft film tube 4 can be connected by welding.

[0071] In an optional embodiment, the material of the connecting film 3 is selected from one or more of polyurethane (PU), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), polyamide (PA), polyvinyl alcohol (PVA) freeze-thaw film, expanded polytetrafluoroethylene (ePTFE), and fluorinated ethylene propylene copolymer (FEP);

[0072] And / or, the material of the stent membrane tube 2 is selected from one or more of polyurethane (PU), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), polyamide (PA), polyvinyl alcohol (PVA) freeze-thaw film, expanded polytetrafluoroethylene (ePTFE), and fluorinated ethylene propylene copolymer (FEP);

[0073] And / or, the material of the bracket 1 is nickel-titanium alloy.

[0074] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An implantable device for restricting food flow in the duodenum, characterized in that: It comprises a stent, a stent film tube and a valve core shaft film tube, wherein the stent comprises a stent body and an anchor thorn arranged on the stent body, the stent film tube covers the outside of the stent, and the anchor thorn penetrates the stent film tube and is located outside the stent film tube, the stent film tube is connected to the valve core shaft film tube, and a fluid channel is arranged between the stent film tube and the valve core shaft film tube; The valve core shaft film tube is provided with a valve core airbag, and the valve core airbag is connected to a gas generating component which can generate gas under preset conditions and input the gas into the valve core airbag.

2. The implant device for restricting food flow in the duodenum according to claim 1, characterized in that: There are more than two valve core airbags, which are arranged in sequence along the valve core shaft film tube, each valve core airbag is connected to the valve core shaft film tube through an air injection hole, and the gas outlet end of the gas generating assembly is connected to the valve core shaft film tube; Alternatively, there are more than two valve core airbags, and the more than two valve core airbags are arranged in sequence along the valve core shaft membrane tube, and each of the valve core airbags is correspondingly provided with a gas generating component.

3. The implant device for restricting food flow in the duodenum according to claim 1, characterized in that: The valve core air bag is streamlined.

4. The implant device for restricting food flow in the duodenum according to claim 1, characterized in that: The material of the valve core shaft film tube is selected from at least one of polyurethane, low-density polyethylene, linear low-density polyethylene, polyamide, polyvinyl alcohol freeze-thaw film, expanded polytetrafluoroethylene, fluorinated ethylene-propylene copolymer and silica gel; And / or, the material of the valve core airbag is selected from at least one of polyvinyl alcohol freeze-thaw film, silicone, polyurethane, low-density polyethylene and linear low-density polyethylene.

5. The implant device for restricting food flow in the duodenum according to claim 2, characterized in that: A weak connection is adopted between the valve core airbag and the valve core shaft film tube; And / or, the valve core shaft membrane tube includes shaft tube sections that are sequentially connected through valve core airbags, and a diaphragm is arranged in the shaft tube section with both ends connected to the valve core airbags.

6. The implant device for restricting food flow in the duodenum according to claim 1, characterized in that: The gas generating assembly includes a first chamber for containing a first reactant and a second chamber for containing a second reactant. The first chamber and the second chamber are separated by a second isolation device that can be dissolved under preset conditions. The first reactant and the second reactant can react and generate gas after contact.

7. The implant device for restricting food flow in the duodenum according to claim 6, characterized in that: The first reactant is a liquid, the second reactant is a solid, and the gas outlet end of the gas generating component is located on the second chamber; And / or, the gas outlet end of the gas generating assembly is provided with a breathable membrane or a breathable hole; And / or, the second isolation device is a disintegrable binding wire or a disintegrable clip that can dissolve in intestinal fluid.

8. The implant device for restricting food flow in the duodenum according to claim 6, characterized in that: The first reactant is selected from at least one of citric acid solution and acetic acid, and the second reactant is selected from at least one of sodium bicarbonate and potassium bicarbonate; And / or, the first reactant is a solvent, and the second reactant is a first pressed tablet and a second pressed tablet that can be dissolved in the solvent.

9. The implant device for restricting food flow in the duodenum according to claim 1, characterized in that: The end of the valve core shaft film tube close to the bracket is provided with an arc-shaped diverter; And / or, the support membrane tube is connected to the valve core shaft membrane tube via a connecting membrane, and the fluid channels are symmetrically arranged along the valve core shaft membrane tube.

10. The implant device for restricting food flow in the duodenum according to claim 9, characterized in that: The material of the connecting film is selected from one or more of polyurethane, low-density polyethylene, linear low-density polyethylene, polyamide, polyvinyl alcohol freeze-thaw film, expanded polytetrafluoroethylene, and fluorinated ethylene-propylene copolymer; And / or, the material of the stent membrane tube is selected from one or more of polyurethane, low-density polyethylene, linear low-density polyethylene, polyamide, polyvinyl alcohol freeze-thaw film, expanded polytetrafluoroethylene, and fluorinated ethylene-propylene copolymer; And / or, the material of the bracket is nickel-titanium alloy.

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