Intestinal anastomosis metal stent system with suction function

Abstract

The utility model provides an intestinal anastomosis metal stent system with a suction function, which comprises a metal stent, an inner membrane, an outer membrane, a drainage tube and a stent release device, the metal stent is dumbbell-shaped, two sides of the metal stent are raised, and the middle of the metal stent is a groove section; the inner film is a double-layer film and comprises a first film and a second film which are attached to the inner side and the outer side of the metal stent, and the first film and the second film are attached to wrap the metal stent into a whole; the outer film wraps the metal support and wraps the outer side of the second film. The two ends of the outer film are fixedly attached to the outer side of the second film at the protruding positions of the two sides, a space is formed between the outer film and the second film, and a plurality of through holes are formed in the outer film. The drainage tube is communicated with the space; the metal support is in the support releasing device before being released. After the metal support is released, liquid secreted by an intestinal canal stoma, intestinal mucosa, blood vessels and stoma tissue can be blocked or supported, the liquid can enter a gap between the outer membrane and the inner membrane through the through holes in the outer membrane and is sucked out by negative pressure, the stoma and the stoma are kept clean, and healing of the stoma and the stoma is promoted.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to an intestinal anastomosis metal stent system with suction function. Background Technology

[0002] Gastrointestinal obstruction is common in clinical practice. According to the location of the obstruction, it can be divided into esophageal obstruction, gastric obstruction, duodenal obstruction, small bowel obstruction, colonic obstruction, and rectal obstruction. According to the benign or malignant nature of the obstruction, it can be analyzed as benign obstruction and malignant obstruction. According to the time of onset, it can be classified as acute obstruction, subacute obstruction, and chronic obstruction. According to the nature of the obstruction, it can be classified as mechanical obstruction, dynamic obstruction, and strangulated obstruction.

[0003] Removing the cause of obstruction, resecting the affected organ, and performing gastrointestinal anastomosis are routine surgical procedures for treating gastrointestinal obstruction. The use of anastomotic devices has greatly simplified organ anastomosis, but complications such as anastomotic leakage and bleeding are still common. For patients in the acute phase, to reduce the incidence of complications, a gastrointestinal stoma is often performed, allowing the anastomosis and reduction of digestive organs to occur after the organ edema subsides. A gastrointestinal stoma not only requires cumbersome nursing care, affecting daily life and work, but the secondary surgery to complete the anastomosis and reduction of digestive organs further increases the patient's financial burden and physical suffering.

[0004] Fully covered nickel-titanium alloy stents have been widely used in the treatment of bile leaks. By sealing the leak through the stent wall, bile leakage can be stopped, thereby promoting wound healing. These stents have also been used to treat gastrointestinal perforations and anastomotic leaks. However, under gastrointestinal peristalsis, cylindrical fully covered stents are prone to displacement, losing their ability to seal the leak and thus limiting their clinical application. To reduce stent displacement, fully covered stents are designed in a dumbbell shape. However, fluid secreted from the gastrointestinal mucosa and the leak tends to accumulate in the central depression of the stent, which not only hinders wound healing but can also lead to further aggravation of the anastomotic leak.

[0005] To facilitate the drainage of secretions accumulated in the recesses of metal stents, VAC Stent Company has applied for a negative pressure suction stent (patent number: WO2024170414A1). This stent is a dumbbell-shaped, fully covered metal stent with a polyurethane foam insert in the recessed area. A vacuum tube connects the foam to the recessed surface of the metal stent. Continuous negative pressure suction through the vacuum tube removes various secretions, inflammatory mediators, and pus filtered by the polyurethane foam, thereby promoting the healing of the leakage site. The aforementioned negative pressure suction stent still has the following problems: 1. The gastrointestinal mucosa is in close contact with the polyurethane sponge, and the friction between the polyurethane sponge and the gastrointestinal mucosa can lead to gastrointestinal mucosal edema and promote the production of secretions; 2. The polyurethane sponge has a filtering effect on the gastrointestinal mucosa and the fluid secreted from the leak, and lumps of necrotic tissue or purulent coating will be deposited on the surface and in the gaps of the polyurethane sponge or block the suction tube, gradually reducing the negative pressure drainage effect; 3. During continuous negative pressure suction, digestive juices in the gastrointestinal tract at both ends of the stent will enter the groove of the metal stent through the gap between the metal stent and the gastrointestinal mucosa. The damage of digestive juices to the leak tissue is not conducive to the closure of the leak; 4. The outer sheath of the stent release device has a raised protective pad, which is not conducive to the application of the stent in surgical procedures. Utility Model Content

[0006] In response to the aforementioned technical problems, an intestinal anastomosis metal stent system with suction function is provided.

[0007] The technical means adopted in this utility model are as follows:

[0008] A metal stent system for intestinal anastomosis with suction function includes: a metal stent, an inner membrane, an outer membrane, a drainage tube, and a stent release device. The metal stent is dumbbell-shaped with raised sides and a grooved section in the middle.

[0009] The inner membrane is a double-layer membrane, which includes a first membrane and a second membrane. The first membrane is attached to the inner side of the metal support, and the second membrane is attached to the outer side of the metal support. The first membrane and the second membrane are attached to each other and wrap the metal support into a whole.

[0010] The outer membrane wraps around a metal support and is wrapped around the outside of the second membrane; the two ends of the outer membrane are attached and fixed to the outside of the second membrane at the two raised sides, and there is a space between the outer membrane and the second membrane. The outer membrane is provided with multiple through holes, and the multiple through holes are all connected to the space.

[0011] The drainage tube is connected to the space;

[0012] The metal bracket is installed inside the bracket release device before it is released.

[0013] Furthermore, the metal support is woven from nickel-titanium alloy wire, and the metal support is provided with a recycling loop.

[0014] Furthermore, the outer surface of the outer membrane is smooth, and the inner surface is provided with multiple protrusions, which are arranged in a crisscross pattern; the multiple through holes include multiple large holes and multiple small holes, which are distributed among the multiple protrusions.

[0015] The two ends of the outer membrane are fixedly connected to the outermost ends of the two sides of the metal support and the highest points of the two bulges.

[0016] Furthermore, the drainage tube enters through the interior of a raised section on one side of the metal support, passes through the raised section into the space, and adheres to the second membrane; the drainage tube located in the space is arranged along the length of the entire groove segment.

[0017] Furthermore, the drainage tube may be a single tube or two tubes.

[0018] Furthermore, the single drainage tube is a suction tube, and the lead end of the suction tube is connected to an external negative pressure device through a negative pressure suction connector. The suction tube has multiple first side holes on its wall, which are used to connect the suction tube and the space.

[0019] Furthermore, the single drainage tube is a dual-channel tube, with an internal suction channel and a water injection channel. The tube wall of the dual-channel tube has multiple second side holes and multiple third side holes. The multiple second side holes are connected to the suction channel and the space, and the multiple third side holes are connected to the water injection channel and the space. The outlet end of the dual-channel tube is connected to a negative pressure suction connector and an air injection connector. The negative pressure suction connector is connected to the suction channel and to an external negative pressure device, and the air injection connector is connected to the water injection channel and to an external water injection pipe.

[0020] Furthermore, the drainage tube is a double tube, comprising a suction tube and a flushing tube, both of which are single-channel tubes. The suction tube is connected to an external negative pressure device via a negative pressure suction connector, and the flushing tube is connected to an external water injection pipe via an air injection connector. The suction tube has multiple fourth side holes on its wall, which are used to connect the suction tube to the space. The flushing tube has multiple fifth side holes on its wall, which are used to connect the flushing tube to the space.

[0021] Furthermore, the suction tube and the rinsing tube are symmetrically arranged around the center of the metal support, and the rinsing tube is either straight or annular.

[0022] Furthermore, the stent release device includes an outer sheath and a pusher, the pusher being inserted into the interior of the outer sheath, and the metal stent being sleeved on the pusher and located inside the outer sheath before release;

[0023] The head end of the outer sheath may or may not be covered with a silicone protective ring, and the tail end of the outer sheath is provided with a first handle;

[0024] The head end of the pusher has a conical structure, and a limiting structure is provided on the tube wall of the pusher. Before the metal bracket is released, it is sleeved between the conical structure and the limiting structure. The tail end of the pusher is provided with a second handle.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. The intestinal anastomosis metal stent system with suction function provided by this utility model has an outer membrane with a smooth surface, which can reduce the irritation of the digestive tract mucosa and reduce the production of secretions.

[0027] 2. The intestinal anastomosis metal stent system with suction function provided by this utility model has a hole in the outer membrane. The fluid secreted by the gastrointestinal mucosa and the leak can enter the gap between the inner and outer membranes through the hole and be suctioned out by the negative pressure drainage tube, which can promote the healing of the anastomosis and the leak.

[0028] 3. The intestinal anastomosis metal stent system with suction function provided by this utility model forms a relatively closed space between the outer membrane and the inner membrane, which can promote the entry of large pieces of pus and necrotic tissue into the closed space through the outer membrane pores, resulting in higher drainage efficiency.

[0029] 4. The intestinal anastomosis metal stent system with suction function provided by this utility model has the inner lining fixed on a metal stent mesh. Multiple protrusions are provided on the outer inner lining. Under the pressure of the gastrointestinal mucosa on the outer lining, a large gap remains between the outer and inner lining, resulting in high negative pressure drainage efficiency. The irrigation fluid can enter the suction tube through the gap, avoiding the accumulation of irrigation fluid.

[0030] 5. The intestinal anastomosis metal stent system with suction function provided by this utility model has retrieval loops at both ends of the metal stent. The metal stent can be removed through the digestive tract by pulling the retrieval loops under endoscopy.

[0031] Based on the above reasons, this utility model can be widely promoted in fields such as medicine. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of this utility model.

[0034] Figure 2 This is a schematic diagram of the structure of the metal support and drainage tube of this utility model.

[0035] Figure 3 for Figure 2 A sectional view.

[0036] Figure 4 This is a partial unfolded schematic diagram of the outer membrane of this utility model.

[0037] Figure 5 This is a schematic diagram of the metal support mesh at the inner membrane of this utility model.

[0038] Figure 6 This is a three-dimensional view of the outer membrane.

[0039] Figure 7 This is a 3D view of the metal support frame.

[0040] In the diagram: 11. Metal support; 12. Inner membrane; 13. Outer membrane; 131. Macropore; 132. Micropore; 133. Protrusion; 21. Outer sheath; 22. Pusher; 23. Silicone protective ring; 3. Drainage tube. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0042] like Figures 1-7 As shown, this utility model provides an intestinal anastomosis metal stent system with suction function, including: a metal stent 11, an inner membrane 12, an outer membrane 13, a drainage tube 3, and a stent release device. The metal stent 11 is dumbbell-shaped, with raised sides and a groove in the middle. The inner membrane 12 is a double-layer membrane that wraps around the metal stent. The double-layer membrane includes a first membrane and a second membrane. The first membrane is attached to the inner side of the metal stent 11, and the second membrane is attached to the outer side of the metal stent 11. The two membranes (the first membrane and the second membrane) are attached to each other and wrap around the metal stent 11 as a whole. The outer membrane 13 wraps around the metal stent 11 and wraps around the outer side of the second membrane. The two ends of the outer membrane 13 are attached to the inner membrane at the raised sides of the metal stent 11, that is, the two ends of the outer membrane 13 are attached and fixed to the outer side of the second membrane at the raised sides. There is a space between the outer membrane 13 and the second membrane. The outer membrane 13 is provided with multiple through holes, all of which are connected to the space. The drainage tube 3 is connected to the space. Before the metal stent 11 is released, it is placed in the stent release device.

[0043] Preferably, the metal support 11 is woven from nickel-titanium alloy wire, and the metal support 11 is provided with a recycling loop.

[0044] Preferably, the outer surface of the outer membrane 13 is smooth, and the inner surface is provided with multiple protrusions 133 arranged in a crisscross pattern. Multiple through-holes include multiple large holes 131 and multiple small holes 132, distributed among the protrusions 133. Both ends of the outer membrane 13 are fixedly connected to the outermost ends of the metal support 11 to the highest points of the protrusions on both sides. The diameter of the large holes 131 is larger than the diameter of the small holes 132, and the arrangement of the large holes 131 and small holes 132 can be based on actual needs and the orientation of the protrusions 133. Generally, the larger the holes and the denser the distribution, the better the drainage effect. However, if the holes are too large, intestinal mucosal villi and other substances entering the large holes 131 will block them. Therefore, the outer membrane 13 cannot be entirely composed of large holes 131. Similarly, it cannot be entirely composed of small holes 132, as large tissues cannot pass through them; therefore, both large and small holes are necessary. In this embodiment, the arrangement of the plurality of large holes 131, the plurality of small holes 132, and the plurality of protrusions 133 is not limited to the following. Figure 4 The distribution pattern can also be such that small holes 132 are set between two adjacent protrusions 133 in a horizontal row, and a large hole 131 is set at the center of four protrusions 133 forming a parallelogram on three adjacent rows. The arrangement of the large holes 131 and small holes 132 also needs to be based on the remaining space after arranging multiple protrusions 133 on the outer membrane 13. For example, if after placing a large hole 131 at the center of four protrusions 133, there is insufficient space between two adjacent protrusions 133 in a horizontal row to place another large hole 131, then a small hole 132 needs to be arranged. Therefore, the arrangement of the large and small holes needs to be based on the actual structure of the outer membrane 13 to achieve a better drainage effect. It should be noted that since the size of the metal support varies in actual use, the size of the large hole 131, small hole 132, and protrusion 133 needs to be determined according to the model of the metal support.

[0045] Preferably, the drainage tube 3 enters through the inside of the bulge on one side of the metal support 11 (the right bulge in the figure), passes through the bulge into the space (perforated metal support mesh), and adheres to the second membrane; the drainage tube 3 located in the space is arranged along the length of the entire groove segment, that is, the length of the drainage tube 3 located in the space is the same as the length of the groove segment.

[0046] The drainage tube 3 of this utility model can also be directly fixedly connected to the outer membrane 13, and inserted into the space through the outer surface of the outer membrane 13, such as... Figure 7 As shown, both drainage tubes 3 are inserted into the space from the outer surface of the outer membrane 13. However, the drainage effect of this arrangement of drainage tubes 3 is not as good as the effect of entering the space from the bulge. This is because the present invention preferably inserts the drainage tubes 3 through the inside of the bulge on one side of the metal support 11, passes through the bulge on that side and enters the space, and adheres to the second membrane.

[0047] Preferably, the drainage tube 3 is a single tube or a double tube.

[0048] Preferably, the single drainage tube 3 is a suction tube, and the outlet end of the suction tube is connected to an external negative pressure device through a negative pressure suction connector. The suction tube has multiple first side holes on its wall, which are used to connect the suction tube and the space.

[0049] Preferably, the single drainage pipe 3 is a dual-channel pipe, with an internal suction channel and a water injection channel. The pipe wall of the dual-channel pipe is provided with multiple second side holes and multiple third side holes. The multiple second side holes are connected to the suction channel and the space, and the multiple third side holes are connected to the water injection channel and the space. The outlet end of the dual-channel pipe is connected to a negative pressure suction connector and an air injection connector. The negative pressure suction connector is connected to the suction channel and to an external negative pressure device, and the air injection connector is connected to the water injection channel and to an external water injection pipe.

[0050] Preferably, the drainage tube 3 is a double tube, which includes a suction tube and a flushing tube. Both the suction tube and the flushing tube are single-channel tubes. The suction tube is connected to an external negative pressure device through a negative pressure suction connector, and the flushing tube is connected to an external water injection pipe through an air injection connector. The suction tube has multiple fourth side holes on its wall, which are used to connect the suction tube and the space. The flushing tube has multiple fifth side holes on its wall, which are used to connect the flushing tube and the space.

[0051] Preferably, the suction tube and the flushing tube are symmetrically arranged around the center of the metal support 11, and the flushing tube is straight or circular (i.e. spiral).

[0052] Preferably, the stent release device includes an outer sheath 21 and a pusher 22. The pusher 22 is inserted into the interior of the outer sheath 21. Before release, the metal stent 11 is fitted onto the pusher 22 and located inside the outer sheath 21. The head end of the outer sheath 21 may or may not be covered by a silicone protective ring 23, and the tail end of the outer sheath 21 is provided with a first handle. The head end of the pusher 22 has a conical structure, and the tube wall of the pusher 22 is provided with a limiting structure (an existing limiting structure can be used). Before release, the metal stent 11 is fitted between the conical structure and the limiting structure, and the tail end of the pusher 22 is provided with a second handle.

[0053] After the metal stent of this invention is released, it can block the intestinal leak or support the intestinal anastomosis. Fluids secreted by the intestinal mucosa, blood vessels, and leak tissue can enter the gap between the outer and inner membranes through the pores on the outer membrane and be suctioned out by negative pressure, which can keep the anastomosis and leak clean and promote the healing of the anastomosis and leak. By continuously injecting saline or air into the gap between the outer and inner membranes, the anastomotic mucosa and leak are constantly flushed, which can not only promote the discharge of inflammatory mediators secreted by the anastomosis and leak, but also reduce the blockage rate of the negative pressure drainage tube, thereby accelerating the healing of the anastomosis and leak.

[0054] Use of this utility model:

[0055] 1. Treatment of gastrointestinal perforation or anastomotic leakage

[0056] If a gastroscopy or colonoscopy reveals a perforation in the digestive tract or anastomotic leakage, a guidewire is inserted and advanced into the distal digestive tract. Guided by the guidewire, this metallic stent system is placed. The stent pusher of the stent release device is fixed, and the outer sheath is pulled back. The metallic stent is gradually released from the outer sheath until it is fully released. The drainage tube is fixed, and the stent release device is pulled back until the drainage tube separates from the stent release device.

[0057] 1.1 Single suction tube

[0058] The suction tube leads to an external negative pressure device (existing equipment) via a negative pressure suction connector, which can intermittently or continuously suction out secretions between the second membrane and the outer membrane that have entered the inner membrane.

[0059] 1.2 Single-channel dual-channel flushing drainage tube

[0060] The outlet of the dual-channel drainage tube is connected to an air injection connector and a negative pressure suction connector. Air or water is injected through the air injection connector, and the air or water enters the cavity between the inner and outer membranes. The negative pressure suction connector is connected to a negative pressure suction tube to intermittently or continuously suction out the air, water and secretions between the second membrane of the inner membrane and the outer membrane.

[0061] 1.3 Dual single-channel flushing drainage tubes

[0062] An air or water is injected into a drainage tube through an air injection connector. The air or water flows into the cavity between the second membrane and the outer membrane of the inner membrane through the side hole of the drainage tube. A negative pressure suction tube is connected through a negative pressure suction connector to intermittently or continuously suction out the water and secretions in the cavity between the second membrane and the outer membrane of the inner membrane.

[0063] 2. Acute phase intestinal anastomosis

[0064] For patients with acute intestinal obstruction, after resection of necrotic and stenotic intestinal segments, enterostomy is unnecessary; the edematous intestinal segments are directly anastomosed end-to-end. The intestinal wall is incised away from the anastomosis, and the stent system is inserted through the incision, with the anastomosis located in the middle of the stent. The intestinal segments at both ends of the anastomosis are squeezed towards the middle of the stent, and the stent pusher of the stent release device is fixed, while the outer sheath is pulled back. The metal stent is gradually released from the outer sheath until it is completely released. The drainage tube is fixed, and the stent release device is pulled back until it separates from the stent release device. At this point, the intestinal wall on the groove of the metal stent is folded, and the anastomosis is tension-free. Absorbable sutures are used to fix the intestinal wall to the raised tube walls at both ends of the metal stent to prevent stent displacement. The entire intestinal wall incision and the depressor muscle layer are sutured with absorbable sutures and fixed to the drainage tube, which runs parallel to the intestinal wall and is wrapped with seromuscular sutures. Finally, the drainage tube is brought out through a puncture in the abdominal wall and sutured to the abdominal wall to fix it in place. By using negative pressure suction, secretions in the gap between the inner and outer membranes can be intermittently or continuously aspirated. Alternatively, air or water can be continuously injected into the gap between the inner and outer membranes to dilute the secretions and promote their discharge.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A system of intestinal anastomosis metal stent with suction function, characterized in that, include: The metal stent (11), inner membrane (12), outer membrane (13), drainage tube (3) and stent release device, wherein the metal stent (11) is dumbbell-shaped with raised sides and a grooved section in the middle; The inner membrane (12) is a double membrane, which includes a first membrane and a second membrane. The first membrane is attached to the inner side of the metal support (11), and the second membrane is attached to the outer side of the metal support (11). The first membrane and the second membrane are attached to each other and wrap the metal support (11) into a whole. The outer membrane (13) wraps around the metal support (11) and is wrapped around the outside of the second membrane; the two ends of the outer membrane (13) are attached and fixed to the outside of the second membrane at the two sides of the raised area, and there is a space between the outer membrane (13) and the second membrane. The outer membrane (13) is provided with multiple through holes, and the multiple through holes are all connected to the space. The drainage tube (3) is connected to the space; The metal bracket (11) is placed inside the bracket release device before it is released.

2. The intestinal anastomosis stent system with suction function according to claim 1, characterized in that, The metal support (11) is woven from nickel-titanium alloy wire, and the metal support (11) is provided with a recycling loop.

3. The intestinal anastomosis stent system with suction function according to claim 1, characterized in that, The outer surface of the outer membrane (13) is smooth, and the inner surface is provided with a plurality of protrusions (133), which are arranged in a crisscross pattern; the plurality of through holes include a plurality of large holes (131) and a plurality of small holes (132), which are distributed between the plurality of protrusions (133); The two ends of the outer membrane (13) are fixedly connected to the outermost ends of the two sides of the metal support (11) to the highest point of the two sides.

4. The intestinal anastomosis stent system with suction function according to claim 1, wherein The drainage tube (3) enters through the interior of the raised side of the metal support (11), passes through the raised side into the space, and adheres to the second membrane; the drainage tube (3) located in the space is arranged along the length of the entire groove section.

5. The intestinal anastomosis stent system with suction function according to claim 4, characterized in that, The drainage tube (3) can be a single tube or two tubes.

6. The intestinal anastomosis stent system with suction function according to claim 4, wherein The single drainage tube (3) is a suction tube. The lead end of the suction tube is connected to an external negative pressure device through a negative pressure suction connector. The tube wall of the suction tube is provided with multiple first side holes, which are used to connect the suction tube and the space.

7. The intestinal anastomosis stent system with suction function according to claim 4, wherein The single drainage tube (3) is a dual-channel tube with an internal suction channel and a water injection channel. The tube wall of the dual-channel tube is provided with multiple second side holes and multiple third side holes. The multiple second side holes are connected to the suction channel and the space, and the multiple third side holes are connected to the water injection channel and the space. The outlet end of the dual-channel tube is connected to a negative pressure suction connector and an air injection connector. The negative pressure suction connector is connected to the suction channel and to an external negative pressure device, and the air injection connector is connected to the water injection channel and to an external water injection pipe.

8. The intestinal anastomosis stent system with suction function according to claim 4, wherein The drainage tube (3) is double-ended, and the double-ended drainage tube (3) includes a suction tube and a flushing tube. Both the suction tube and the flushing tube are single-channel tubes. The suction tube is connected to an external negative pressure device through a negative pressure suction connector, and the flushing tube is connected to an external water injection pipe through an air injection connector. The suction tube has multiple fourth side holes on its wall, which are used to connect the suction tube and the space. The flushing tube has multiple fifth side holes on its wall, which are used to connect the flushing tube and the space.

9. The intestinal anastomosis stent system with suction function according to claim 8, characterized in that, The suction tube and the flushing tube are symmetrically arranged around the center of the metal support (11), and the flushing tube is either straight or ring-shaped.

10. The intestinal anastomosis stent system with suction function according to claim 1, wherein The stent release device includes an outer sheath (21) and a pusher (22). The pusher (22) is inserted into the interior of the outer sheath (21). Before release, the metal stent (11) is sleeved on the pusher (22) and located inside the outer sheath (21). The head end of the outer sheath (21) may or may not be covered by a silicone protective ring (23), and the tail end of the outer sheath (21) is provided with a first handle; The head end of the pusher (22) is tapered, and a limiting structure is provided on the tube wall of the pusher (22). Before the metal bracket (11) is released, it is sleeved between the tapered structure and the limiting structure. The tail end of the pusher (22) is provided with a second handle.

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