Multifunctional intestinal stent for rectal anastomosis protection

Abstract

This utility model relates to the field of medical device technology, specifically to a multifunctional intestinal stent for the protection of rectal anastomoses. It includes a hollow, biodegradable drainage support tube and a hollow protective sleeve made of elastic material. The protective sleeve is inserted from the bottom of the drainage support tube to the upper end, folded outwards, and tightly fitted around the middle of the outer side of the drainage support tube. A hollow flushing ring matching the outer diameter of the drainage support tube is provided on the lower outer side of the drainage support tube, with multiple flushing holes arranged on the outer side of the flushing ring. A flushing tube is provided inside the drainage support tube, with its upper end sealed to a flushing inlet column and communicating with the flushing holes. A one-way valve injection head is provided at the lower end of the flushing tube. This technical solution, by blocking and draining intestinal contents from the body, prevents intestinal contents above the anastomosis from contacting the anastomosis, thus protecting the anastomosis and allowing for flushing and disinfection of the anastomosis and surrounding intestinal lumen as needed.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a multifunctional intestinal stent for rectal anastomosis protection. Background Technology

[0002] Rectal cancer is one of the most common malignant tumors. Currently, surgical resection is the main treatment. However, postoperative anastomotic infection is a complication, so the anastomosis needs to be protected.

[0003] Traditional protection involves creating a temporary enterostomy in the abdominal wall, which involves severing the colon connected to the esophagus and stomach, fixing the severed end to the abdominal wall to form an enterostomy, and then performing a second surgery to reposition the intestinal opening after the anastomosis heals. While this traditional method effectively reduces the incidence of complications, it increases the physical burden on patients and medical costs. Currently, various drainage devices are available to protect the anastomosis from infection and avoid the harm of a second surgery. For example, the applicant's prior patent CN222091906U, entitled "An Intestinal Stent for the Protection of Rectal Anastomosis," uses a hollow, biodegradable drainage support tube. A hollow protective sleeve is inserted from the bottom of the biodegradable drainage support tube to the upper end, folded outward, and tightly fitted onto the middle section of the outer side of the drainage support tube. The intestinal stent, after being fitted, is placed in the intestine above the anastomosis, supported by the drainage support tube and utilizing the sealed drainage support on the outside of the protective sleeve. The gap between the anastomosis tube and the intestine is filled with intestinal contents that are drained from the body through the hollow cavity of the protective sheath. While this method of blocking and draining intestinal contents effectively protects the anastomosis, it is a single-function approach. Furthermore, due to the peristaltic and irregular structure of the intestinal wall, it is impossible to completely seal the gap between the protective sheath and the intestine. In clinical practice, a small amount of intestinal contents can still contaminate the anastomosis through the gap between the protective sheath and the intestine, leading to adverse consequences such as infection, swelling, slow healing, or even failure to preserve the anus. Summary of the Invention

[0004] This invention addresses the shortcomings of existing intestinal stents in clinical practice by providing a multifunctional intestinal stent for rectal anastomosis protection. It not only protects the anastomosis by blocking and draining intestinal contents from the body, making it less likely for intestinal contents above the anastomosis to come into contact with the anastomosis, but also allows for flushing and disinfection of the anastomosis and surrounding intestinal lumen as needed by providing flushing holes on the intestinal stent.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: A multifunctional intestinal stent for rectal anastomosis protection includes a hollow biodegradable drainage support tube and a hollow protective sleeve made of elastic material. The hollow protective sleeve is inserted from the bottom of the drainage support tube to the upper end of the drainage support tube, folded outward, and tightly fitted around the middle of the outer side of the drainage support tube. A hollow flushing ring matching the outer diameter of the drainage support tube is provided on the lower outer side of the drainage support tube. The flushing ring has a flushing inlet column extending inward and penetrating the side wall of the drainage support tube. Flushing holes are evenly arranged on the outer side of the flushing ring. A flushing tube is provided in the inner cavity of the drainage support tube. The upper end of the flushing tube is sealed to the flushing inlet column and communicates with the flushing holes. A one-way valve injection head is provided at the lower end of the flushing tube.

[0006] The aforementioned technical solution typically involves inserting a drainage support tube simultaneously with tumor resection via the anus. The drainage support tube is fixed 5 cm proximal to the anal anastomosis before rectoanal anastomosis. First, a hollow protective sheath is inserted from the bottom of the drainage support tube to its upper end, then folded outwards and tightly fitted around the middle of the outer side of the tube. The free end of the sheath is then pulled outwards from the inside of the tube, allowing intestinal contents to drain through the sheath. Before the drainage support tube degrades, the protective sheath isolates the intestinal contents from the anastomosis, avoiding prophylactic ileostomy while achieving complete drainage of intestinal contents and reducing the risk of anastomotic leakage. After the drainage support tube degrades, fragments of the tube and the protective sheath are discharged through the anus, preventing secondary surgery and potential harm. Furthermore, because the protective sleeve is made of elastic material, when one end of the sleeve is folded outward and placed over the dilated portion, the sleeve is stretched. Upon release, the sleeve contracts inward, allowing it to securely fasten around the dilated portion. Simultaneously, the elastic material facilitates anal closure and prevents obstruction. Allowing intestinal contents to pass through the anus as early as possible promotes early recovery of anal function, which reduces the likelihood of anastomotic stenosis or even closure.

[0007] In addition, a hollow flushing ring matching the outer diameter of the drainage support tube is provided on the lower outer side of the drainage support tube. The flushing ring is located at the upper end of the rectal anastomosis. The flushing ring has a flushing inlet column extending inward and penetrating the side wall of the drainage support tube. Flushing holes are evenly arranged on the upper outer side of the flushing ring. A flushing tube is provided in the inner cavity of the drainage support tube. The upper end of the flushing tube is sealed to the flushing inlet column and communicates with the flushing holes. The lower end of the flushing tube is provided with a one-way valve injection head. Physiological saline or anti-inflammatory solution can be injected into the flushing ring using a syringe connected to the one-way valve injection head. Physiological saline or anti-inflammatory solution will flow out from the flushing hole to flush the anastomosis. This flushes the small amount of intestinal contents that flow down due to the gap between the protective sleeve and the intestine, and then flows out from the anus. The anastomosis and surrounding intestinal lumen can be flushed and disinfected as needed to reduce infection and swelling at the anastomosis, promote anastomosis healing, and improve postoperative recovery.

[0008] Further specifying, in the aforementioned intestinal stent, the flushing ring includes a transverse septum and a vertical septum, which are cross-sealed inside the flushing ring. The transverse septum divides the flushing ring into an upper cavity and a lower cavity. A connecting hole is provided on the transverse septum. The flushing inlet column is located on the side wall of the upper cavity and on the left side of the vertical septum. The connecting hole is located on the right side of the vertical septum. The flushing hole is located on the outer wall of the lower cavity. The inner diameters of the flushing inlet column, the connecting hole, and the flushing hole decrease sequentially.

[0009] This type of flushing ring is divided into an upper cavity and a lower cavity, which are connected by a connecting hole. Injected saline or anti-inflammatory solution first fills the upper cavity before flowing into the lower cavity through the connecting hole. The full upper cavity also provides secondary blockage between the protective sheath and the intestine, facilitating better anti-inflammatory flushing of the anastomosis. Furthermore, the decreasing inner diameters of the flushing inlet column, the connecting hole, and the flushing hole increase pressure, creating a certain negative pressure flushing effect. Simultaneously, the constantly changing pressure in the flushing hole, achieved by pushing the syringe at different speeds or changing medications, creates a pulsating effect, preventing blockage and ensuring effective flushing. Typically, the inner diameter of the flushing inlet column is 3-4 mm, the connecting hole is 1.5-2.5 mm, and the flushing hole is 0.5-1 mm. This size limitation of the flushing inlet column ensures better compatibility with existing flushing tubing and also guarantees sufficient force and speed when pushing the liquid with a syringe.

[0010] Furthermore, considering the sealing effect, a sealing airbag matching the outer diameter of the drainage support tube is provided on the upper outer side of the drainage support tube. The sealing airbag has an air inlet column extending inward and penetrating the side wall of the drainage support tube. An air inlet tube is provided in the inner cavity of the drainage support tube. The upper end of the air inlet tube is sealed to the air inlet column, and the lower end of the air inlet tube is provided with a one-way valve air injection head. In this way, after the multifunctional intestinal stent is installed, air can be pushed into the sealing airbag using a syringe, so that the sealing airbag can further reduce the gap between the protective sheath and the intestine. Since a sealing airbag is used, its shape and position can be adapted to the specific situation inside the intestine, which can better block the gap between the protective sheath and the intestine, ensure the healing of the anastomosis, and improve the postoperative recovery effect.

[0011] Furthermore, the lower opening of the protective sleeve is provided with a manure bag connection port, and the manure bag connection port is connected to the manure bag.

[0012] Furthermore, the drainage support tube is defined as a stepped flared tube, with the tube radius gradually increasing from the middle to the upper and lower ends. The inner wall of the stepped flared tube is also provided with a vertical flushing tube groove, which matches the flushing tube. The flushing inlet column is set in the flushing tube groove.

[0013] Because the drainage support tube is a stepped flared tube with enlarged ends, it can be easily fixed inside the intestinal tract, preventing slippage. The stepped drainage support tube has spaced anti-slip ribs on its outer side. These ribs prevent slippage, and the protective sleeve, fitted onto the outer end of the drainage support tube, is also secured to these ribs to prevent detachment. Furthermore, the inner wall of the stepped flared tube has a vertically oriented flushing tube groove that matches the flushing fluid tube. The flushing fluid inlet column is positioned within this groove, facilitating the fixation of the flushing fluid tube and ensuring a secure connection between the inlet column and the flushing fluid tube.

[0014] To ensure that the protective sleeve is more securely fitted onto the drainage support tube, a number of anti-slip ribs are provided at intervals on the upper and middle parts of the outer side of the drainage support tube. The anti-slip ribs are annular rings that surround the drainage support tube circumferentially.

[0015] Furthermore, the portion of the protective sleeve covering the drainage support tube is secured to the drainage support tube by a binding wire, which is located at the lower end of the anti-slip rib. By securing the protective sleeve tightly to the drainage support tube with the binding wire, it becomes difficult for the protective sleeve to detach, preventing slippage. Simultaneously, the binding wire's location at the lower end of the anti-slip rib also prevents the wire from sliding up and down, thus ensuring a better secure fit.

[0016] Furthermore, the ligature is made of a biodegradable material, facilitating its later excretion from the intestines.

[0017] In addition, the position of the sealing airbag is defined, and the sealing airbag is positioned at the upper end of the anti-slip rib. In this way, when the hollow protective sleeve is inserted from the bottom of the biodegradable drainage support tube to the upper end of the drainage support tube and then folded outward and tightly fitted on the middle section of the outer side of the drainage support tube, the sealing airbag is also sealed inside the protective sleeve. When the sealing airbag is inflated, the gap between the protective sleeve and the intestine can be reduced better, and the intestinal contents can be better isolated from the anastomosis.

[0018] By adopting the above technical solution, not only can the contamination of the anastomosis by intestinal contents be prevented, but the anastomosis and surrounding intestinal lumen can also be rinsed and disinfected as needed. This can more effectively reduce the occurrence of infection and swelling at the anastomosis, promote anastomosis healing, and improve the postoperative recovery effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram showing the protective sleeve everted and tightly clamped onto the drainage support tube in an embodiment of a multifunctional intestinal stent used for rectal anastomosis protection; Figure 2 This is a schematic diagram of the flushing sleeve connecting to the flushing pipe; Figure 3 This is a schematic diagram of the airbag connecting to the air intake pipe; Figure 4 This is a schematic diagram showing the state of the irrigation tube and the air inlet tube being engaged in the irrigation groove and the air inlet tube respectively, in an embodiment of a multifunctional intestinal stent for rectal anastomosis protection. Detailed Implementation

[0020] The utility model will be further described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 As shown, a multifunctional intestinal stent for rectal anastomosis protection includes a hollow biodegradable drainage support tube 1 and a hollow protective sleeve 3 made of elastic material. The hollow protective sleeve 3 is inserted from the bottom of the drainage support tube 1 to the upper end of the drainage support tube, folded outward, and tightly fitted around the middle of the outer side of the drainage support tube 1. A hollow flushing ring 2 matching the outer diameter of the drainage support tube 1 is provided on the lower outer side of the drainage support tube 1. The flushing ring has a flushing inlet column 21 extending inward and penetrating the side wall of the drainage support tube 1. Multiple flushing holes 22 are arranged on the outer side of the flushing ring. A flushing tube 4 is provided in the inner cavity of the drainage support tube 1. The upper end of the flushing tube 4 is sealed to the flushing inlet column 21 and communicates with the flushing holes 22. A one-way valve injection head 41 is provided at the lower end of the flushing tube 4.

[0022] In the above-described embodiment of the multifunctional intestinal stent for rectal anastomosis protection, it is applicable during transanal tumor resection. In use, firstly, connect a syringe to the one-way valve injection tube head 41 and inject physiological saline into the flushing sleeve 2. Check if the flushing is unobstructed and if the physiological saline can smoothly spray out from the multiple flushing holes 22. Then, insert the hollow protective sleeve from the bottom of the drainage support tube to the upper end of the drainage support tube, fold it outwards, and tightly clamp it around the middle of the outer side of the drainage support tube. Check if the protective sleeve is securely fitted. Then, fix the multifunctional intestinal stent 5 cm proximal to the anal anastomosis site before performing the rectoanal anastomosis. During use, the free end of the protective sleeve is pulled out from the inside of the drainage support tube towards the outside of the anus, facilitating the transfer of intestinal contents through the inside of the protective sleeve to the outside of the body. A hollow flushing ring, matching the outer diameter of the drainage support tube, is provided on the lower outer side of the drainage support tube. This flushing ring is located at the upper end of the rectal anastomosis. The flushing ring has a flushing inlet column extending inward and penetrating the side wall of the drainage support tube. Flushing holes are evenly distributed on the outer side of the flushing ring. A flushing tube is installed inside the drainage support tube. The upper end of the flushing tube is sealed to the flushing inlet column and communicates with the flushing holes. A one-way valve injection head is provided at the lower end of the flushing tube. A syringe connected to the one-way valve injection head can be used to inject saline or anti-inflammatory solution into the flushing ring. The saline or anti-inflammatory solution will flow out from the flushing holes to flush the anastomosis, rinsing away any small amount of intestinal contents that flows down due to the gap between the protective sleeve and the intestine. The flushing solution flows out naturally from the anus. This structure allows for flushing and disinfection of the anastomosis and surrounding intestinal lumen as needed, reducing anastomotic infection and swelling, promoting anastomotic healing, and improving postoperative recovery.

[0023] Furthermore, such as Figure 1 and Figure 2 As shown, in the intestinal stent described above, the flushing ring 2 includes a transverse septum 23 and a vertical septum 24. The transverse septum 23 and the vertical septum 24 are installed in a cross-sealed manner inside the flushing ring 2. The transverse septum 23 divides the flushing ring 2 into an upper cavity 231 and a lower cavity 232, and the vertical septum 24 seals and separates the upper cavity 231 and the lower cavity 232. A connecting hole 233 is provided on the transverse septum 23. The flushing inlet column 21 is located on the side wall of the upper cavity 231 and on the left side of the vertical septum 24. The connecting hole 233 is located on the right side of the vertical septum 24. The flushing hole 22 is located on the outer wall of the lower cavity 232. The inner diameters of the flushing inlet column 21, the connecting hole 233, and the flushing hole 22 decrease sequentially.

[0024] Because the transverse septum 23 and the vertical septum 24 cross and seal, the flushing ring 2 is divided into an upper cavity 231 and a lower cavity 232. The upper cavity 231 and the lower cavity 232 are connected by a connecting hole 233. The rapidly injected saline or anti-inflammatory solution will fill the upper cavity 231, making it in a state of full expansion, and flow into the lower cavity 232 through the connecting hole 233. The full state of the upper cavity 231 can also provide secondary blockage of the gap between the intestinal stent and the intestine, better preventing intestinal contents from flowing into the anastomosis from the gap between the protective sleeve and the intestine. At the same time, using Flushing the anastomosis site with saline or anti-inflammatory solution is beneficial for the anastomosis surgery. This anti-inflammatory treatment can also be used later on to flush previously operated anastomoses as needed. On the other hand, the decreasing inner diameters of the flushing inlet column 21, the connecting hole 233, and the flushing hole 22 increase pressure, creating a certain negative pressure flushing effect. Simultaneously, the pressure at the flushing hole 22 changes continuously with different speeds of saline or anti-inflammatory solution injection or when it is replaced, creating a pulse effect and preventing the flushing hole 22 from becoming blocked, thus achieving a better flushing effect. Typically, the inner diameter of the flushing inlet column 21 is 3-4 mm, the inner diameter of the connecting hole 233 is 1.5-2.5 mm, and the inner diameter of the flushing hole 22 is 0.5-1 mm. The size limitation of the flushing inlet column 21 is for better compatibility with existing flushing tubes.

[0025] Furthermore, such as Figure 1 , Figure 2 and Figure 3 As shown, in the aforementioned intestinal stent, a sealing balloon 5 matching the outer diameter of the drainage support tube 1 is provided on the upper outer side of the drainage support tube 1. The sealing balloon 5 has an air inlet column 51 extending inward and penetrating the side wall of the drainage support tube 1. An air inlet tube 52 is provided inside the drainage support tube 1, with its upper end sealed to the air inlet column 51. A one-way valve air injection head 53 is provided at the lower end of the air inlet tube 52. After the multifunctional intestinal stent is installed, air can be pushed into the sealing balloon 5 using a syringe. This allows the sealing balloon 5 to further reduce the gap between the protective sleeve and the intestine, and to better fix the drainage support tube. Because it uses a balloon seal, its shape and position can adapt to the specific conditions inside the intestine, better reducing the gap between the protective sleeve and the intestine, ensuring the success of the anastomosis surgery, and also better ensuring the anastomosis surgery and subsequent healing, thus improving postoperative recovery.

[0026] like Figure 1 — Figure 4As shown, to better optimize the above technical solution, ensure the firmness of the drainage support tube installed in the intestine, better play the blocking role, and facilitate the installation of the flushing tube and air inlet tube, the drainage support tube 1 is defined as a stepped flared tube. The radius of the stepped flared tube gradually increases from the middle to the upper and lower ends. The inner wall of the stepped flared tube is also provided with a vertical flushing tube groove 11 and an air inlet tube groove 12. The flushing tube groove 11 matches the flushing fluid tube 4, and the flushing fluid inlet column 21 is set in the flushing tube. The air intake pipe groove 12 matches the air intake pipe 52, and the air intake column 51 is set in the air intake pipe groove 12. Since the drainage support pipe is a stepped flared pipe with enlarged portions at both ends, it can be easily fixed in the intestinal tube, making it less prone to slippage. The stepped drainage support pipe has spaced anti-slip ribs on its outer side. Since the anti-slip ribs have an anti-slip function, the protective sleeve is fitted onto the anti-slip ribs at one end, which can prevent the protective sleeve from falling off the drainage support pipe. In addition, in order to better ensure that the protective sleeve is more securely fitted onto the drainage support pipe 1, several spaced anti-slip ribs 6 are defined on the upper and middle parts of the outer side of the drainage support pipe 1. The anti-slip ribs 6 are annular around the circumference of the drainage support pipe 1. The part of the protective sleeve 3 fitted onto the drainage support pipe 1 is fastened to the drainage support pipe 1 by a tie 7. The tie 7 is set at the lower end of the anti-slip ribs 6. The protective sleeve is securely tied to the drainage support tube with a cable tie, making it difficult for the sleeve to detach and preventing slippage. Simultaneously, the cable tie 7, positioned at the lower end of the anti-slip rib 6, prevents it from sliding upwards, thus ensuring a better secure hold. The cable tie is made of biodegradable material, facilitating subsequent excretion from the intestines.

[0027] In addition, the position of the sealing airbag 5 is defined, and the sealing airbag 5 is positioned at the upper end of the anti-slip rib 6. In this way, when the hollow protective sleeve is inserted from the bottom of the biodegradable drainage support tube to the upper end of the drainage support tube and then folded outward and tightly fitted on the middle section of the outer side of the drainage support tube, the sealing airbag 5 is also sealed inside the protective sleeve. When the sealing airbag 5 is inflated, the gap between the protective sleeve and the intestine can be reduced better, and the intestinal contents can be better isolated from the anastomosis.

[0028] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A multifunctional intestinal stent for rectal anastomosis protection, comprising a hollow biodegradable drainage support tube (1) and a hollow protective sleeve (3) made of elastic material, wherein the hollow protective sleeve (3) is inserted from the bottom inside of the drainage support tube (1) to the upper end of the drainage support tube, folded outward, and tightly fitted around the middle of the outer side of the drainage support tube (1), characterized in that, A hollow flushing ring (2) matching the outer diameter of the drainage support tube (1) is provided on the lower outer side of the drainage support tube (1). A flushing inlet column (21) extending inward and penetrating the side wall of the drainage support tube (1) is provided on the flushing ring. Multiple flushing holes (22) are arranged on the outer side of the flushing ring. A flushing tube (4) is provided in the inner cavity of the drainage support tube (1). The upper end of the flushing tube (4) is sealed to the flushing inlet column (21) and communicates with the flushing holes (22). A one-way valve injection tube head (41) matching the syringe is provided at the lower end of the flushing tube (4).

2. The multifunctional intestinal stent for rectal anastomosis protection as described in claim 1, characterized in that, The flushing ring (2) includes a horizontal partition (23) and a vertical partition (24). The horizontal partition (23) and the vertical partition (24) are installed in a cross-sealed manner inside the flushing ring (2). The horizontal partition (23) divides the flushing ring (2) into an upper cavity (231) and a lower cavity (232). A connecting hole (233) is provided on the horizontal partition (23). The flushing inlet column (21) is located on the side wall of the upper cavity (231) and on the left side of the vertical partition (24). The connecting hole (233) is located on the right side of the vertical partition (24). The flushing hole (22) is located on the outer wall of the lower cavity (232). The inner diameters of the flushing inlet column (21), the connecting hole (233), and the flushing hole (22) decrease sequentially.

3. The multifunctional intestinal stent for rectal anastomosis protection as described in claim 1, characterized in that, A sealing airbag (5) matching the outer diameter of the drainage support tube (1) is provided on the upper outer side of the drainage support tube (1). An air inlet column (51) extending inward and penetrating the side wall of the drainage support tube (1) is provided on the sealing airbag (5). An air inlet pipe (52) is provided in the inner cavity of the drainage support tube (1). The upper end of the air inlet pipe (52) is sealed to the air inlet column (51). A one-way valve air injection head (53) matching the syringe is provided at the lower end of the air inlet pipe (52).

4. The multifunctional intestinal stent for rectal anastomosis protection as described in claim 2, characterized in that, The inner diameter of the flushing inlet column (21) is 3-4 mm, the inner diameter of the connecting hole (233) is 1.5-2.5 mm, and the inner diameter of the flushing hole (22) is 0.5-1 mm.

5. The multifunctional intestinal stent for rectal anastomosis protection as described in claim 1, characterized in that, The drainage support tube (1) is a stepped flared tube. The radius of the stepped flared tube gradually increases from the middle to the upper and lower ends. The inner wall of the stepped flared tube is also provided with a vertical flushing tube groove (11). The flushing tube groove (11) matches the flushing tube (4). The flushing inlet column (21) is set in the flushing tube groove (11).

6. The multifunctional intestinal stent for rectal anastomosis protection as described in claim 3, characterized in that, The drainage support tube (1) is a stepped flared tube. The radius of the stepped flared tube gradually increases from the middle to the upper and lower ends. The inner wall of the stepped flared tube is also provided with a vertical air inlet groove (12). The air inlet groove (12) matches the air inlet tube (52). The air inlet column (51) is set in the air inlet groove (12).

7. The multifunctional intestinal stent for rectal anastomosis protection as described in claim 3, characterized in that, The drainage support tube (1) has several anti-slip ribs (6) spaced apart on the upper and middle parts of its outer side. The anti-slip ribs (6) are annular rings that surround the drainage support tube (1) in the circumference.

8. The multifunctional intestinal stent for rectal anastomosis protection as described in claim 7, characterized in that, The protective sleeve (3) is fitted outside the drainage support tube (1) and fastened to the drainage support tube (1) by a tie (7). The tie (7) is located at the lower end of the anti-slip rib (6).

9. The multifunctional intestinal stent for rectal anastomosis protection as described in claim 8, characterized in that, The binding wire (7) is made of biodegradable material.

10. The multifunctional intestinal stent for rectal anastomosis protection as described in claim 7, characterized in that, The sealing airbag (5) is located at the upper end of the anti-slip rib (6).

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