A valve and a valve fixation device

Abstract

This invention relates to a valve and a valve fixation device. This invention eliminates the need to fold the esophagus and stomach fundus; it simply adds an auxiliary valve to prevent the reflux of gastric contents. The normal physiological and anatomical structures of the esophagus and stomach fundus remain almost unchanged. Fixation is achieved through simple suturing with soft medical sutures to solve the problem of food reflux. Surgery performed using this device and valve causes minimal damage to tissues. Furthermore, the device and valve have simple structures, low manufacturing costs, easy installation, and few operational steps. During surgery, no ultrasound guidance or rigid staplers are required, facilitating future valve separation, disassembly, and / or replacement.

Description

Technical Field

[0001] This utility model relates to a treatment device, and more particularly to a valve and a valve fixation device. Background Technology

[0002] Gastroesophageal reflux disease (GERD) is defined as mucosal damage caused by the reflux of stomach contents into the esophagus. Possible causes of GERD include lower esophageal sphincter abnormalities, hiatal hernia, esophageal contractile abnormalities, and slow gastric emptying. Current treatments for GERD include the following three approaches: 1. Drug treatment: Drug treatment mainly relieves local symptoms, but it is difficult to completely stop the reflux; 2. Folding the gastric wall tissue to reconstruct the structure of the gastric fundus and esophagus, but this method involves complex instruments, high manufacturing costs, many operation steps, significant changes to the normal physiological and anatomical structure of the esophagus and gastric fundus, considerable extent and degree of tissue damage, and troublesome disassembly and replacement. 3. As in the US patent with publication number US9855125B2, the opening or closing of a magnetic ring is used to drive the contraction of the sphincter, but the above method requires the installation of sensors and other structures, which is costly.

[0003] In summary, how to treat gastroesophageal reflux disease while reducing treatment costs and minimizing harm to the human body has become an urgent problem for researchers in this field. Summary of the Invention

[0004] The technical problem this invention aims to solve is: how to treat gastroesophageal reflux disease while reducing treatment costs and minimizing harm to the human body; To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: This invention relates to a valve used to prevent the reflux of stomach contents into the esophagus. It comprises: a valve body, which, when in a flattened sheet structure, has a notch whose width gradually decreases along the outer side towards the center of the valve body; two fixing rings for connection to the esophageal fold, which are connected to the valve body and symmetrically positioned on both sides of the notch; the left and right sides of the valve body are folded downwards to form side skirts, and the two fixing rings are brought close to cover the notch, thereby switching the valve body from a flattened state to an installed state; the valve body in the installed state has an upwardly arched structure in the middle.

[0005] Furthermore, when the valve body is in a flattened state, an annular groove is provided on one side of the valve body facing the stomach body to facilitate arching.

[0006] Furthermore, the valve body has symmetrically formed first grooves on one side facing the stomach. One end of the first groove is connected to the annular groove, and the other end extends to the outer contour of the valve body away from the fixing ring. The portion of the valve body located between the two first grooves is a distal folded skirt.

[0007] Furthermore, the valve body has symmetrically formed second grooves on one side facing the stomach. One end of the second groove is connected to the annular groove, and the other end extends to the outer contour of the valve body near the fixing ring. The part of the valve body located between the two second grooves is the side skirt.

[0008] Furthermore, when the valve body is in the installation state, the two fixing rings are set to a horizontal state, or a coaxial state with opposite sides, or a symmetrical and coplanar state.

[0009] This utility model also provides a valve fixation device for fixing a valve to the esophageal fold on the side of the cardia of the digestive tract; it includes: an endoscopic suture device, a valve clamping ring disposed on the outer peripheral wall of the endoscopic suture device, and a ring box disposed at both ends of the valve clamping ring, the ring box being used to open a fixing ring and to position the fixing ring at the needle inlet or needle outlet of the endoscopic suture device.

[0010] Furthermore, the portion of the valve body away from the fixation ring is attached to the inner peripheral wall of the endoscopic suture device.

[0011] The beneficial effects of this utility model are as follows: This utility model relates to a valve and a valve fixing device. This utility model eliminates the need to fold the esophagus and stomach fundus; it simply adds an auxiliary valve to prevent the reflux of gastric contents. The normal physiological and anatomical structure of the esophagus and stomach fundus remains almost unchanged. Fixation is achieved through simple suturing with soft medical sutures. Specifically, the valve is fixed to the esophageal fold using the valve fixing device. During normal eating, food falls onto the valve body in its installed state. At this time, the entire valve body rotates downwards around the connection between the fixing ring and the esophageal fold, creating an open gap between the valve body and the esophageal fold for food to enter. After eating, the valve body rotates back to its original position. When reflux occurs, the food in the stomach impacts upwards and acts on the bottom surface of the valve body. Because the valve body has an upwardly arched structure, its shape is not easily damaged by the impact of food, thus solving the problem of food reflux. Surgery performed using this device and valve causes minimal damage to the tissues. The device and valve have a simple structure, low manufacturing cost, easy installation, and few operation steps. During the surgery, no ultrasound guidance or rigid staplers are required, which facilitates the separation, disassembly, and / or replacement of the device and valve in the future. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a front structural diagram of the valve of this utility model; Figure 2 This is a schematic diagram of the reverse structure of the valve of this utility model; Figure 3 This is a schematic diagram of the first type of valve in the installation state; Figure 4 This is a schematic diagram of the second type of valve in the installation state; Figure 5 This is a schematic diagram of the third type of valve in the installation state; Figure 6 This is a diagram showing the fit between the valve clamp and the valvular gate; Figure 7 This is a diagram showing the fit between the valve clamp and the anastomosis device; Figure 8 It is a diagram showing the fit between the valve clip ring, the anastomosis device, and the valve; Figure 9 This is a diagram showing the state of the valves during eating; Figure 10 This is a diagram showing the state of the valve when regurgitation occurs. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0015] This embodiment is a valve 1, which is fixed to the esophageal fold 01 on the side of the cardia of the digestive tract to prevent the contents of the stomach from flowing back into the esophagus. Figure 1 The diagram shows the valve body 11 in a flattened state. A notch 12 is provided at the lower part of the valve body 11. The notch 12 gradually decreases in width as it extends inward along the radial direction of the valve body 11. Fixing rings 13 are provided on the left and right sides of the bottom of the valve body 11. The fixing rings 13 are used to connect with the esophageal fold 01. The notch 12 is between the two fixing rings 13. The parts on the left and right sides of the valve body 11 that connect with the fixing rings 13 are side skirts 14.

[0016] See Figure 2 When the valve body 11 is in the installed state, the two fixing rings 13 are close to and fixed on the esophageal fold 01, and the side skirt 14 is folded downward. At this time, the notch 12 provides space for the side skirt 14 to fold, and the folded valve body 11 has an arched structure with the middle part facing upward.

[0017] See Figure 9When eating normally, food falls onto the valve body 11 in the installed state. At this time, the valve body 11 rotates downward around the connection between the fixing ring 13 and the esophageal fold 01, forming an open gap between the valve body 11 and the esophageal fold 01 for food to enter. After eating, the valve body 11 rotates back to its original position. See Figure 10 When reflux occurs, the food in the stomach impacts upward and acts on the bottom surface of the valve body 11. Since the valve body 11 is an upward arched structure, its shape is not easily damaged by the impact of food, thus the valve body 11 prevents the reflux of food.

[0018] In order to facilitate the upward arching of the valve body, this embodiment adopts an annular groove 15 that facilitates arching on the side of the valve body 11 facing the stomach body, that is, at the center of the bottom surface of the valve body 11. When the valve body 11 is in a flattened state, the groove spacing of the annular groove 15 is equal. When the valve body 11 is in the installed state, the middle part of the valve body 11 arches upward, and the groove spacing of the annular groove 15 decreases due to the upward arching. By setting the annular groove 15, the upward arching of the valve body 11 can be guided.

[0019] See Figure 2 To facilitate the passage of food and prevent reflux, this embodiment employs a valve body 11 facing one side of the stomach, i.e., the bottom surface of the valve body 11 is symmetrically provided with two first grooves 16. One first groove 16 is connected at one end to an annular groove 15 and extends obliquely to the upper left at the other end; the other first groove 16 is connected at one end to an annular groove 15 and extends obliquely to the upper right at the other end. The part between the two first grooves 16 is a distal folded skirt 17. In this embodiment, the purpose of opening two first grooves 16 is to facilitate the flipping of the distal folding skirt 17. When the valve body 11 is in a flat state, the groove spacing of the first grooves 16 is equal. When the distal folding skirt 17 is flipped, the groove spacing of the first grooves 16 decreases. During normal feeding, food falls onto the valve body 11 in the installed state. In addition to the valve body 11 rotating downward as a whole, the distal folding skirt 17 on the side away from the fixing ring 13 also folds downward, which further increases the opening gap between the valve body 11 and the esophageal fold 01 and improves the efficiency of feeding. When reflux occurs, the bottom of the distal folded skirt 17 is impacted by the food, and the distal folded skirt 17 and other parts of the valve body 11 form an upward arched state. This shape is not easily damaged by the impact of the food, so the valve body prevents the reflux of food.

[0020] See Figure 2To facilitate the folding of the side skirt, in this embodiment, the valve body 11 is symmetrically provided with two second grooves 18 on the bottom surface of the valve body 11 facing the stomach. One second groove 18 is connected to the annular groove 15 at one end and extends obliquely to the lower left at the other end; the other second groove 18 is connected to the annular groove at one end and extends obliquely to the lower right at the other end. The part between the two second grooves 18 is the side skirt 14. In this embodiment, the purpose of opening two second grooves 18 is to facilitate the folding of the side folding skirt 19. When the valve body 11 is in a flat state, the groove spacing of the second grooves 18 is equal. When the side folding skirt 19 is flipped, the groove spacing of the second grooves 18 decreases.

[0021] The membrane body 11 formed by the second groove 18 and the first groove 16 is a side-end folding skirt 19. The two side-end folding skirts 19 are distributed on the left and right sides of the membrane body 11, so that the function of the side-end folding skirt 19 is the same as the function of the distal folding skirt 17.

[0022] To illustrate the positional arrangement of the two fixing rings 13 when the valve body 11 is in the installed state, this embodiment uses the valve body 11 in the installed state with the two fixing rings 13 positioned in a vertically and horizontally aligned manner (see [link]). Figure 3 Alternatively, the two fixed rings 13 can be configured as coaxial rings facing each other (see...). Figure 4 Alternatively, the two fixed rings 13 can be configured as a symmetrical, coplanar state (see...). Figure 5 ).

[0023] See Figure 6 , 7 8. Regarding how to fix the valve to the esophageal fold 01 on the side of the cardia of the digestive tract, this solution also discloses a valve fixing device, including: an endoscopic suture device 2 adopting the suture device in Chinese Patent No. CN219661796U, a valve clamping ring 31 set on the outer peripheral wall of the endoscopic suture device, the valve clamping ring 31 having an arc-shaped structure, and a ring box 32 respectively set at both ends of the valve clamping ring 31, the ring box 32 having an arc-shaped cavity, a part of the fixing ring 13 being locked in the cavity, and the ring box 32 positioning the fixing ring at the needle inlet 21 or needle outlet 22 of the endoscopic suture device 2; the part of the valve body away from the fixing ring being hung on the inner peripheral wall of the endoscopic suture device.

[0024] When valve 1 is fixed in esophageal fold 01, the endoscope grasper grasps the target area inside esophageal fold 01, places the target area between the needle inlet and needle outlet of the endoscope stapler, inserts the needle, threades the suture, pulls out the two fixing rings of the valve located in the two rings respectively, threades the suture, and ties the knot. After tying the knot, the two fixing rings of the valve are fixed on both sides of the target area. The valve is fixed and clamped to the target area of ​​esophageal fold 01 by the two fixing rings of the valve.

[0025] Specific surgical steps: The endoscope reaches the gastric fundus, and the endoscope is reversed for confirmation, revealing the cardia and lip. The endoscope is then repositioned (for direct visualization) and withdrawn to the distal end of the dentate line. The endoscope's grasper grasps one side of the tissue distal to the dentate line. The suture needle is inserted, passing through one of the fixation rings, the target suture site, and the other fixation ring. The suture needle enters the needle track groove. Once fully inserted, the suture is pulled out or the grasper is used to gently pull the two fixation rings out of their corresponding clamps. After pulling them out, continuous suturing continues. After suturing, the suture is threaded through and tied using the grasper and knot pusher. During the knot tying process, the grasper is used to adjust the tissue location (if using a reverse endoscope, this means directly fixing it to the proximal end of the tissue to be fixed) to prevent slippage. The suture between the two fixation rings and the pull cord are cut with suture scissors (and removed). The endoscope is withdrawn, and the suture device is removed, completing the procedure.

[0026] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A valve for preventing the reflux of stomach contents into the esophagus, characterized in that, include: The valve body, when in a flattened sheet structure, has a notch; Two fixing rings for connecting with the esophageal fold are connected to the valve body and are symmetrical on both sides of the notch; The left and right sides of the valve body are folded down to form side skirts, and the two fixing rings are brought close to cover the notch to switch the valve body from the flattened state to the installed state. The valve body in the installed state has a structure that arches upwards from the middle.

2. The valve according to claim 1, characterized in that, When the valve body is in a flattened state, an annular groove is provided on one side of the valve body facing the stomach body to facilitate arching.

3. A valve according to claim 2, characterized in that, The valve body has symmetrical first grooves on one side facing the stomach. One end of the first groove is connected to the annular groove, and the other end extends to the outer contour of the valve body away from the fixing ring. The part of the valve body located between the two first grooves is a distal folded skirt.

4. A valve according to claim 2, characterized in that, The valve body has symmetrically formed second grooves on one side facing the stomach. One end of the second groove is connected to the annular groove, and the other end extends to the outer contour of the valve body near the fixing ring. The part of the valve body located between the two second grooves is the side skirt.

5. A valve according to claim 1, characterized in that, When the valve body is in the installation state, the two fixing rings are set to a horizontal state, or a coaxial state with opposite sides, or a symmetrical and coplanar state.

6. A valve according to claim 1, characterized in that, The notch gradually decreases in width from the outer side of the valve body toward the center.

7. A valve fixation device for fixing a valve according to any one of claims 1-6 to the esophageal fold on the side of the cardia of the digestive tract; characterized in that, include: An endoscopic stapler includes a valve clamping ring disposed on the outer peripheral wall of the endoscopic stapler. Both ends of the valve clamping ring are provided with a ring holder, which is used to open a fixing ring and position the fixing ring at the needle inlet or needle outlet of the endoscopic stapler.

8. A valve fixation device according to claim 7, characterized in that, The portion of the valve body furthest from the fixation ring is attached to the inner peripheral wall of the endoscopic suture device.

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