An anastomosis protection anal canal after rectal surgery
The anal tube, with its double-support ring contact surface and airbag design, solves the problem of intestinal contents leaking into the anastomosis, effectively protecting the anastomosis and promoting tissue healing, reducing the risk of infection, and adapting to intestinal peristalsis and changes in body position.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEST CHINA HOSPITAL SICHUAN UNIV
- Filing Date
- 2025-04-11
- Publication Date
- 2026-06-09
AI Technical Summary
Existing membrane-supported shape memory alloy stent-type anal tubes have design limitations in terms of intestinal lumen support and intestinal contents diversion and drainage. They cannot effectively prevent intestinal contents from leaking into the anastomosis area, increasing the risk of postoperative infection. Furthermore, they lack spatial physical isolation of the anastomosis, affecting tissue regeneration.
The device employs dual supports to form a physical barrier through an annular contact surface, preventing intestinal contents from leaking into the anastomosis area. The balloon design adapts to the morphology of intestinal mucosal folds, providing flexible fit and gradient pressure bands to reduce anastomotic tension and prevent mechanical tearing. The funnel-shaped design guides feces into the tube, reducing leakage.
It effectively protects the anastomosis site, avoids fecal and digestive fluid contamination of the wound, promotes tissue healing, reduces the risk of secondary infection, adapts to intestinal peristalsis and changes in body position, reduces intestinal wall damage, and improves system reliability.
Smart Images
Figure CN224331108U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, specifically relating to a method for protecting the anal canal at the anastomosis site after rectal surgery. Background Technology
[0002] In the clinical management of rectal resection, anastomotic leakage is one of the most serious postoperative complications, with an incidence rate of 5%-24%, becoming a significant clinical challenge for colorectal surgery. In traditional prevention strategies, intraoperative placement of an anal tube can be used as an important intervention. Its mechanism of action is mainly based on two aspects: first, it reduces the intraluminal pressure through physical drainage, thereby reducing the mechanical impact of feces and digestive juices on the anastomosis; second, it utilizes the temporary channel formed by the tubular structure to divert the drainage of intestinal contents.
[0003] Existing technologies include membrane-supported shape memory alloy stent-type anal tubes, which have made progress in supporting the intestinal lumen and diverting intestinal contents. However, their design still has significant limitations. The contact-type fit between the stent and the intestinal wall cannot achieve true physical isolation. Intestinal contents can still leak into the anastomosis area through the mucosal folds. Furthermore, this structure lacks spatial physical isolation of the anastomosis and cannot create a clean, independent space conducive to tissue regeneration. Therefore, this technical defect directly leads to increased risk of postoperative secondary infection and hindered granulation tissue formation, among other clinical problems. Therefore, there is a need to develop an anal tube for anastomotic protection after rectal surgery that has three-dimensional isolation, facilitates negative pressure drainage, and functions as a biological barrier. Utility Model Content
[0004] To address the aforementioned technical problems, this invention provides a method for protecting the anal canal at the anastomosis site after rectal surgery. This invention uses double supports to form a physical barrier through annular contact surfaces, completely preventing leakage of intestinal contents into the anastomosis area, avoiding contamination of the wound by feces and digestive fluids, maintaining a moist environment, and promoting epithelial cell migration and granulation tissue growth. The double-point support fixes the anastomotic segment of the intestine, reducing the increase in anastomotic tension caused by changes in body position or intestinal peristalsis, and preventing mechanical tearing.
[0005] The technical solution adopted in this utility model is as follows:
[0006] A rectal anastomosis protection anal canal includes a tube body with two support members on the tube body for supporting the intestine. Both support members are capable of mechanical deformation. The contact surfaces of the two support members with the intestine are annular, which can support both sides of the intestinal anastomosis, thereby forming a cavity between the two support members and the anastomotic segment of the intestine.
[0007] Using the above technical solution, the double support members form a physical barrier through the annular contact surface, completely preventing intestinal contents from leaking into the anastomosis area, avoiding fecal and digestive fluid contamination of the wound, maintaining a moist environment, and promoting epithelial cell migration and granulation tissue growth; the double-point support fixes the anastomotic segment of the intestine, reducing the increase in anastomotic tension caused by changes in body position or intestinal peristalsis, and preventing mechanical tearing.
[0008] Preferably, the two support members are a second airbag and a fourth airbag, respectively. The second airbag and the fourth airbag are respectively arranged concentrically with the tube body, and the second airbag is closer to the anal inlet end of the tube body. The tube body is provided with a second air tube and a fourth air tube. The second air tube is connected to the inner cavity of the second airbag through an independent pipe, and the fourth air tube is connected to the inner cavity of the fourth airbag through an independent pipe.
[0009] Using the above technical solution, the independent inflation tube allows for adjustment of the balloon pressure according to the patient's intestinal lumen diameter during surgery, avoiding excessive expansion that could damage the intestinal wall. After inflation, the balloon forms a flexible fit with the intestinal wall, adapting to the morphology of the intestinal mucosal folds. After deflation, the balloon's volume shrinks, facilitating non-invasive removal postoperatively and reducing the risk of secondary damage. The physical barrier formed between the two balloons completely prevents intestinal contents from leaking into the anastomosis area, avoiding contamination of the wound by feces and digestive fluids, and maintaining a nurturing environment for the intestinal anastomosis.
[0010] Preferably, the fourth airbag is funnel-shaped, and the diameter of the fourth airbag gradually decreases from the end near the anus entrance of the tube to the end away from the anus entrance of the tube; the fourth airbag includes a fourth support ring and a fourth cover with interconnected inner cavities, the fourth support ring is disposed along the outer edge of the side with the maximum diameter of the fourth cover, and the maximum outer diameter of the fourth cover does not exceed the maximum outer diameter of the fourth support ring; the end of the fourth cover away from the fourth support ring is disposed at the end of the tube and communicates with the tube through a first opening.
[0011] Using the above technical solution, the funnel-shaped design facilitates the direct flow of feces into the tube through the first opening, reducing fecal leakage within the intestinal anastomosis segment. The fourth support ring provides radial support, and the fourth cover adheres tightly to the intestinal wall through elastic deformation, forming a "ring-surface" composite seal to block lateral leakage. The gradually decreasing diameter of the funnel reduces shear stress on the intestinal wall, avoiding mucosal damage caused by local stress concentration.
[0012] Preferably, the second airbag is funnel-shaped, and the diameter of the second airbag gradually increases from the end near the anus entrance of the tube to the end away from the anus entrance of the tube; the second airbag includes a second support ring and a second cover with interconnected inner cavities, the second support ring is disposed along the outer edge of the side with the maximum diameter of the second cover, and the maximum outer diameter of the second cover does not exceed the maximum outer diameter of the second support ring.
[0013] Using the above technical solution, the two funnel-shaped symmetrical supports keep the anastomotic segment of the intestine in a slightly contracted state, reducing the local tension of the anastomosis and conforming to the principle of "tension-free healing"; the second support ring provides radial support force, and the second cover adheres tightly to the intestinal wall through elastic deformation, forming a "ring-surface" composite support.
[0014] Preferably, the tube body is further provided with a third airbag, which is disposed between the second airbag and the fourth airbag. The tube body is provided with a third air tube, which is connected to the third airbag through an independent pipe. The third airbag is funnel-shaped, and its diameter gradually decreases from the end near the anus entrance of the tube body to the end away from the anus entrance of the tube body. The third airbag includes a third support ring and a third cover with interconnected inner cavities. The third support ring is disposed along the outer edge of the third cover with the largest diameter, and the maximum outer diameter of the third cover does not exceed the maximum outer diameter of the third support ring. Several second openings are provided on the tube body located between the third airbag and the fourth airbag.
[0015] Using the above technical solution, the third balloon forms a gradient pressure band, evenly distributing the force on the intestinal wall and avoiding ischemic necrosis caused by excessive compression from a single balloon; and the third balloon, as an intermediate isolation layer, intercepts trace amounts of leakage that may break through the distal seal, i.e., the seal of the fourth balloon, thus improving the reliability of the system; the second opening serves as an auxiliary drainage channel between the third and fourth balloons, preventing fecal accumulation. Therefore, this design is particularly suitable for patients with high flow rates of intestinal contents.
[0016] Preferably, a secondary tube is provided inside the tube body, the secondary tube communicating with the first opening, the fixed end of the secondary tube being fixed to the side wall of the tube body near the fourth airbag, and the movable end of the secondary tube being located on the side of the third airbag near the anal entrance of the tube body.
[0017] Using the above technical solution, the secondary tube allows feces from the first opening to flow directly into the end of the tube near the anus, thereby completely blocking the feces flowing in from the first opening from flowing in from the second opening, preventing the feces flowing in from the first opening from flowing out of the tube into the intestine through the second opening.
[0018] Preferably, the tube body is further provided with a first airbag, the first airbag is arranged concentrically with the tube body, and the first airbag is located on the side of the second airbag near the anal inlet end of the tube body; the tube body is provided with a first trachea, and the first trachea is connected to the first airbag through an independent pipe.
[0019] Using the above technical solution, the first airbag is inflated and pressed against the external anal sphincter, preventing the anal canal from shifting inward due to intestinal peristalsis or changes in body position. This improves the directional stability of the anal canal, reduces the need for frequent adjustments to the depth of the anal canal, and the flexible fixation of the first airbag avoids the stimulation and damage to the perianal skin caused by traditional sutures or tape fixation.
[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0021] 1. The dual support components form a physical barrier through the annular contact surface, completely preventing intestinal contents from leaking into the anastomosis area, avoiding fecal and digestive fluid contamination of the wound, maintaining a moist environment, and promoting epithelial cell migration and granulation tissue growth; the dual-point support fixes the anastomotic segment of the intestine, reducing the increase in anastomotic tension caused by changes in body position or intestinal peristalsis, and preventing mechanical tearing.
[0022] 2. The independent inflation tube allows for adjustment of the balloon pressure during surgery according to the patient's intestinal lumen diameter, avoiding over-distension that could damage the intestinal wall. After inflation, the balloon forms a flexible fit with the intestinal wall, adapting to the morphology of the intestinal mucosal folds. After deflation, the balloon's volume shrinks, facilitating non-invasive removal postoperatively and reducing the risk of secondary injury. The physical barrier formed between the two balloons completely prevents leakage of intestinal contents into the anastomosis area, avoiding contamination of the wound by feces and digestive juices, and maintaining a nurturing environment for the intestinal anastomosis.
[0023] 3. The funnel-shaped design facilitates the direct flow of feces into the tube through the first opening, reducing fecal leakage within the intestinal anastomosis. The fourth support ring provides radial support, and the fourth cover adheres tightly to the intestinal wall through elastic deformation, forming a ring-surface composite seal to block lateral leakage. The gradually decreasing diameter of the funnel reduces shear stress on the intestinal wall, avoiding mucosal damage caused by local stress concentration.
[0024] 4. The two funnel-shaped symmetrical supports keep the anastomotic segment of the intestine in a slightly contracted state, reducing local tension at the anastomosis and conforming to the principle of tension-free healing; the second support ring provides radial support force, and the second cover adheres tightly to the intestinal wall through elastic deformation, forming a ring-surface composite support;
[0025] 5. The third balloon forms a gradient pressure zone, evenly distributing the force on the intestinal wall and avoiding ischemic necrosis caused by excessive compression from a single balloon; in addition, the third balloon acts as an intermediate isolation layer, intercepting trace amounts of leakage that may break through the distal seal, i.e., the seal of the fourth balloon, thus improving the reliability of the system; the second opening serves as an auxiliary drainage channel between the third and fourth balloons, preventing fecal accumulation. Therefore, this design is particularly suitable for patients with high flow rates of intestinal contents.
[0026] 6. The secondary tube allows feces from the first opening to flow directly into the end of the tube near the anus, thus completely blocking the feces flowing in from the first opening from flowing in from the second opening, preventing feces from flowing out of the tube from the second opening into the intestine.
[0027] 7. After inflation, the first airbag is pressed against the external anal sphincter to prevent the anal canal from shifting inward due to intestinal peristalsis or changes in body position. This improves the directional stability of the anal canal and reduces the need for frequent adjustments to the depth of the anal canal. The flexible fixation of the first airbag avoids the irritation and damage to the perianal skin caused by traditional sutures or tape fixation. Attached Figure Description
[0028] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:
[0029] Figure 1 This is a three-dimensional structural diagram of a method for protecting the anal canal at the anastomosis site after rectal surgery, according to this utility model.
[0030] Figure 2 This is a utility model Figure 1 Enlarged structural diagram of part A in the middle;
[0031] Figure 3 This is a three-dimensional structural diagram of embodiment 3 of this utility model;
[0032] Figure 4 This is a utility model Figure 3 Enlarged structural diagram of part B in the middle;
[0033] Figure 5 This is a three-dimensional structural diagram of embodiment 4 of this utility model;
[0034] Figure 6 This is a utility model Figure 5 Enlarged structural diagram of part C in the middle.
[0035] Figure Labels
[0036] 1-Tube body, 2-First airbag, 3-Second airbag, 301-Second support ring, 302-Second cover, 4-Third airbag, 401-Third support ring, 402-Third cover, 5-Fourth airbag, 501-Fourth support ring, 502-Fourth cover, 7-First air tube, 8-Second air tube, 9-Third air tube, 10-Fourth air tube, 11-First opening, 12-Second opening, 13-Sub-tube, 14-Camera, 15-Fiber optic cable, 16-Interface. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0038] The following is combined Figures 1-4 This utility model will be described in detail.
[0039] Example 1
[0040] A method for protecting the anal canal at the anastomosis site after rectal surgery, see attached document. Figure 1 The device includes a tube body 1, on which two supports are provided for supporting the intestine. Both supports are capable of mechanical deformation. The contact surfaces between the two supports and the intestine are annular, which can support both sides of the intestinal anastomosis, thereby forming a cavity between the two supports and the anastomotic segment of the intestine. The two supports form a physical barrier through the annular contact surfaces, completely preventing the leakage of intestinal contents into the anastomotic area, avoiding contamination of the wound by feces and digestive juices, maintaining a moist environment, and promoting the migration of epithelial cells and the growth of granulation tissue. The dual-point support fixes the anastomotic segment of the intestine, reducing the increase in anastomotic tension caused by changes in body position or intestinal peristalsis, and preventing mechanical tearing.
[0041] In this embodiment, the two supporting components are a second airbag 3 and a fourth airbag 5, respectively. The second airbag 3 and the fourth airbag 5 are respectively arranged concentrically with the tube body 1, with the second airbag 3 being closer to the anal inlet end of the tube body 1. The tube body 1 is provided with a second trachea 8 and a fourth trachea 10. The second trachea 8 is connected to the inner lumen of the second airbag 3 through an independent pipe, and the fourth trachea 10 is connected to the inner lumen of the fourth airbag 5 through an independent pipe. The independent inflation pipe allows the airbag pressure to be adjusted according to the diameter of the patient's intestinal lumen during the operation, avoiding excessive expansion that could cause damage to the intestinal wall. After inflation, the airbag forms a flexible fit with the intestinal wall, adapting to the morphology of the intestinal mucosal folds. After deflation, the airbag shrinks in volume, facilitating non-invasive removal after surgery and reducing the risk of secondary damage. The physical barrier formed between the two airbags completely prevents intestinal contents from leaking into the anastomosis area, avoiding contamination of the wound by feces and digestive juices, and maintaining the intestinal anastomosis care environment.
[0042] In this embodiment, the fourth airbag 5 is funnel-shaped, and the diameter of the fourth airbag 5 gradually decreases from the end near the anus entrance of the tube body 1 to the end away from the anus entrance of the tube body 1. The fourth airbag 5 includes a fourth support ring 501 and a fourth cover 502 with interconnected inner cavities. The fourth support ring 501 is disposed along the outer edge of the fourth cover 502 on the side with the maximum diameter, and the maximum outer diameter of the fourth cover 502 does not exceed the maximum outer diameter of the fourth support ring 501. The end of the fourth cover 502 away from the fourth support ring 501 is disposed at the end of the tube body 1 and communicates with the tube body 1 through the first opening 11. The funnel-shaped design facilitates the direct flow of feces into the tube body 1 through the first opening 11, reducing fecal leakage in the intestinal anastomosis segment. The fourth support ring 501 provides radial support force, and the fourth cover 502, through elastic deformation, tightly adheres to the intestinal wall, forming a "ring-surface" composite seal to block lateral leakage. The gradually decreasing diameter of the funnel shape reduces the shear stress of the intestinal wall and avoids mucosal damage caused by local stress concentration.
[0043] In this application, the end of the tube body 1 closest to the fourth airbag 5 is the anal inlet end.
[0044] The fourth air pipe 10 is connected to the fourth cover 502 through a pipe, and the pipe connecting the fourth air pipe 10 and the fourth cover 502 is embedded in the inner wall of the pipe body 1; the fourth cover 502 is connected to the inflation chamber of the fourth support ring 501, that is, the fourth support ring 501 is a ring that is inflated synchronously with the fourth cover 502.
[0045] In this embodiment, the second airbag 3 is funnel-shaped, and the diameter of the second airbag 3 gradually increases from the end near the anus entrance of the tube body 1 to the end away from the anus entrance of the tube body 1. The second airbag 3 includes a second support ring 301 and a second cover 302 with interconnected inner cavities. The second support ring 301 is set along the outer edge of the side with the maximum diameter of the second cover 302, and the maximum outer diameter of the second cover 302 does not exceed the maximum outer diameter of the second support ring 301. The two funnel-shaped symmetrical supports keep the anastomotic segment of the intestine in a slightly contracted state, reducing the local tension of the anastomosis and conforming to the principle of "tension-free healing". The second support ring 301 provides radial support force, and the second cover 302 adheres tightly to the intestinal wall through elastic deformation, forming a "ring-surface" composite support.
[0046] The second air pipe 8 is connected to the second cover 302 through a pipe, and the pipe connecting the second air pipe 8 and the second cover 302 is embedded in the inner wall of the pipe body 1; the second cover 302 is connected to the inflation chamber of the second support ring 301, that is, the second support ring 301 is a ring that is inflated synchronously with the second cover 302.
[0047] In this embodiment, the tube body 1 is further provided with a first airbag 2, which is concentric with the tube body 1 and located on the side of the second airbag 3 near the anal inlet end of the tube body 1; the tube body 1 is provided with a first trachea 7, which is connected to the first airbag 2 through an independent pipe; after the first airbag 2 is inflated, it is pressed against the external anal sphincter to prevent the anal canal from shifting inward due to intestinal peristalsis or changes in body position, thereby improving the directional stability of the anal canal and reducing the need for frequent adjustments to the depth of the anal canal. The flexible fixation of the first airbag 2 avoids the stimulation and damage to the perianal skin caused by traditional sutures or tape fixation.
[0048] The first trachea 7 and the first airbag 2 are connected by a pipe, and the pipe connecting the first trachea 7 and the first airbag 2 is embedded in the inner wall of the tube body 1.
[0049] Example 2
[0050] Unlike Example 1, in this example, reference is made to the appendix. Figures 1-2 The tube body 1 is further provided with a third airbag 4, which is located between the second airbag 3 and the fourth airbag 5. A third air tube 9 is provided on the tube body 1, and the third air tube 9 is connected to the third airbag 4 via an independent pipe. The third airbag 4 is funnel-shaped, and its diameter gradually decreases from near the anal inlet end of the tube body 1 to away from the anal inlet end. The third airbag 4 includes a third support ring 401 and a third cover 402 whose inner cavities are interconnected. The third support ring 401 is located along the outer edge of the third cover 402 on the side with the largest diameter. The maximum outer diameter of body 402 does not exceed the maximum outer diameter of the third support ring 401; several second openings 12 are provided on the tube 1 located between the third airbag 4 and the fourth airbag 5; the third airbag 4 forms a gradient pressure band, evenly distributing the force on the intestinal wall and avoiding ischemic necrosis caused by excessive compression of a single airbag; and the third airbag 4 serves as an intermediate isolation layer, intercepting trace amounts of leakage that may break through the distal seal, i.e., the seal of the fourth airbag 5, thus improving the reliability of the system; the second opening 12 serves as an auxiliary drainage channel between the third airbag 4 and the fourth airbag 5, preventing fecal accumulation. Therefore, this design is particularly suitable for patients with high flow rates of intestinal contents.
[0051] There are two second openings 12.
[0052] The third air pipe 9 is connected to the third cover 402 through a pipe, and the pipe connecting the third air pipe 9 and the third cover 402 is embedded in the inner wall of the pipe body 1; the third cover 402 is connected to the inflation chamber of the third support ring 401, that is, the third support ring 401 is a ring that is inflated synchronously with the third cover 402.
[0053] In this application, the diameters of the third support ring 401 and the fourth support ring 501 are both 8cm, the diameters of the second airbag 3 and the second support ring 301 are 6cm, the height of the fourth cover 502 is 2cm, the height of the third cover 402 is 1cm, the distance between the third cover 402 and the fourth cover 502 on the tube 1 is 2cm; the distance between the second cover 302 and the third cover 402 on the tube 1 is 5cm, the height of the second cover 302 is 3cm; the distance between the second support ring 301 and the first airbag 2 near the second support ring 301 is 5cm. All dimensions in this application can be modified according to actual production and use. This application focuses on protecting the structure and does not limit the setting of dimensions.
[0054] Example 3
[0055] Unlike Example 2, refer to Appendix Figures 3-4 In this embodiment, a secondary tube 13 is provided inside the tube body 1. The secondary tube 13 communicates with the first opening 11. The fixed end of the secondary tube 13 is fixed to the side wall of the tube body 1 near the fourth airbag 5. The movable end of the secondary tube 13 is located on the side of the third airbag 4 near the anal entrance of the tube body 1. The secondary tube 13 allows the feces at the first opening 11 to flow directly into the end of the tube body 1 near the anus, thereby completely blocking the feces flowing into the first opening 11 from flowing into the second opening 12, preventing the feces flowing into the first opening 11 from flowing out of the tube body 1 into the intestine through the second opening 12.
[0056] All the second openings 12 are located between the part where the sub-tube 13 is fixed to the tube body 1 and the part where the third airbag 4 is fixed to the tube body 1.
[0057] In this application, the inflation chambers inside the first airbag 2, the second airbag 3, the third airbag 4, and the fourth airbag 5 are all sealed and not connected to the inside of the tube 1.
[0058] Working principle and usage process:
[0059] The following are the steps for using a method to protect the anal canal at the anastomosis site after rectal surgery:
[0060] Step 1: Confirm that there is no air leakage, inject a small amount of gas through the first to fourth trachea 10 and observe the pressure maintenance; ensure that the independent inflation channels of the first to fourth airbags 5 are functioning normally and there is no cross connection; apply medical lubricant evenly to the surface of the tube body 1 and the outer wall of the first to fourth airbags 5 to reduce friction damage to the intestine during insertion.
[0061] Step 2: Slowly insert tube 1 along the anus, so that the end near the fourth balloon 5 passes through the anastomosis area until the fourth balloon 5 is completely in the intestinal lumen. Determine the depth of the anal canal through preoperative imaging or intraoperative positioning to ensure that the fourth balloon 5 is located at the distal end of the anastomosis and the second balloon 3 is located at the proximal end.
[0062] Step 3: Slowly inflate the fourth balloon 5 through the fourth trachea 10, observing the pressure gauge to expand its funnel-shaped structure, allowing the fourth support ring 501 to adhere to the intestinal wall and form a ring seal; inflate the second balloon 3 through the second trachea 8, with the pressure slightly lower than that of the fourth balloon 5, forming proximal support and keeping the anastomotic segment of the intestine in a slightly contracted state; inflate the first balloon 2 through the first trachea 7, causing it to expand and press against the external anal sphincter, fixing the position of the anal canal; inflate the third balloon 4 through the third trachea 9, forming a multi-layered seal and dispersing pressure;
[0063] Step 4: Adjust the balloon pressure according to changes in the intestinal lumen diameter to maintain an effective seal without excessive pressure;
[0064] Step 5: When it is time to remove the anal tube, deflate the third airbag 4, the second airbag 3, the fourth airbag 5 and the first airbag 2 in sequence; after all the airbags are deflated, wait 5 to 10 minutes and observe that there is no risk of leakage in the intestine before slowly pulling out the tube 1.
[0065] Supplement: In step 3, the feces between the third airbag 4 and the fourth airbag 5 flow into the pipe body 1 through the second opening 12 to prevent fecal accumulation. The secondary pipe 13 facilitates the feces to skip the pipe section with the second opening 12 from the first opening 11 and directly enter the pipe body 1.
[0066] Example 4
[0067] Unlike Example 2, refer to Appendix Figures 5-6 In this embodiment, a camera 14 is also provided on the tube body 1. The camera 14 is electrically connected to a USB interface 16 through a wired medium embedded inside the tube body 1. The USB interface 16 is located at the end of the tube body 1 and is convenient for electrical connection with a mobile phone. The camera 14 is located between the second airbag 3 and the third airbag 4.
[0068] The wired medium is optical fiber 15.
[0069] By connecting a phone with the app installed via USB, you can view the anastomosis inside the intestinal lumen on the phone.
[0070] It should be noted that:
[0071] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A post-surgical anastomosis protection anal canal for rectum, comprising a tube body (1), characterized in that, The tube (1) is provided with two support members for supporting the intestine. Both support members can produce mechanical deformation. The contact surface between the two support members and the intestine is annular, which can support both sides of the intestinal anastomosis. Thus, a cavity is formed between the two support members and the anastomosis segment of the intestine.
2. A post-operative anastomosis protecting anal tube according to claim 1, characterized in that, The two support members are a second airbag (3) and a fourth airbag (5), respectively. The second airbag (3) and the fourth airbag (5) are respectively arranged with the same center as the tube body (1), and the second airbag (3) is closer to the anal inlet end of the tube body (1). The tube body (1) is provided with a second air tube (8) and a fourth air tube (10). The second air tube (8) is connected to the inner cavity of the second airbag (3) through an independent pipe, and the fourth air tube (10) is connected to the inner cavity of the fourth airbag (5) through an independent pipe.
3. The method for protecting the anal canal at the anastomosis site after rectal surgery according to claim 2, characterized in that, The fourth airbag (5) is configured in the shape of a funnel. The diameter of the fourth airbag (5) gradually decreases from the end near the anus entrance of the tube body (1) to the end away from the anus entrance of the tube body (1). The fourth airbag (5) includes a fourth support ring (501) and a fourth cover (502) with interconnected inner cavities. The fourth support ring (501) is disposed along the outer edge of the fourth cover (502) on the side with the maximum diameter. The maximum outer diameter of the fourth cover (502) does not exceed the maximum outer diameter of the fourth support ring (501). The end of the fourth cover (502) away from the fourth support ring (501) is disposed at the end of the tube body (1) and communicates with the tube body (1) through the first opening (11).
4. The method for protecting the anal canal at the anastomosis site after rectal surgery according to claim 2, characterized in that, The second airbag (3) is configured as a funnel shape, and the diameter of the second airbag (3) gradually increases from the end near the anal inlet of the tube body (1) to the end away from the anal inlet of the tube body (1); the second airbag (3) includes a second support ring (301) and a second cover (302) with their inner cavities interconnected, the second support ring (301) is disposed along the outer edge of the second cover (302) on the side with the maximum diameter, and the maximum outer diameter of the second cover (302) does not exceed the maximum outer diameter of the second support ring (301).
5. A method for protecting the anal canal at the anastomosis site after rectal surgery according to claim 3, characterized in that, The tube body (1) is also provided with a third airbag (4), which is located between the second airbag (3) and the fourth airbag (5). The tube body (1) is provided with a third air tube (9), which is connected to the third airbag (4) through an independent pipe. The third airbag (4) is funnel-shaped, and the diameter of the third airbag (4) gradually decreases from the end near the anus entrance of the tube body (1) to the end away from the anus entrance of the tube body (1). The third airbag (4) includes a third support ring (401) and a third cover (402) with interconnected inner cavities. The third support ring (401) is located along the outer edge of the third cover (402) on the side with the maximum diameter. The maximum outer diameter of the third cover (402) does not exceed the maximum outer diameter of the third support ring (401). The tube body (1) located between the third airbag (4) and the fourth airbag (5) is provided with several second openings (12).
6. The anal canal protection method for postoperative rectal anastomosis according to claim 5, characterized in that, The tube body (1) is provided with a secondary tube (13) inside. The secondary tube (13) is in communication with the first opening (11). The fixed end of the secondary tube (13) is fixed to the side wall of the tube body (1) near the fourth airbag (5). The movable end of the secondary tube (13) is located on the side of the third airbag (4) near the anal entrance of the tube body (1).
7. The method for protecting the anal canal at the anastomosis site after rectal surgery according to claim 2, characterized in that, The tube (1) is also provided with a first airbag (2), which is co-centered with the tube (1). The first airbag (2) is located on the side of the second airbag (3) near the anal entrance of the tube (1). The tube (1) is provided with a first trachea (7), which is connected to the first airbag (2) through an independent pipe.