Return-free small intestine stoma tube

Abstract

The utility model discloses a retraction-free small intestine stoma tube, which relates to the technical field of medical instruments and is characterized by comprising an outer sleeve, main catheter supporting blocks are fixedly mounted at four corners of the inner wall of the outer sleeve, the main catheter supporting blocks are trapezoidal, and the length direction of the main catheter supporting blocks is consistent with the axial direction of the outer sleeve. A main catheter is fixedly installed on the side, away from the inner wall of the outer sleeve, of the main catheter supporting block, and the main catheter extends in the axial direction of the outer sleeve. The disposable stoma tube is simple in structure and convenient to use, effectively prevents the problem of unsmooth excrement flow turning caused by displacement, reduces the leakage risk of an anastomotic stoma, achieves smooth flow turning of digestive juice and excrement, avoids the trouble that a traditional stoma tube needs a secondary operation, remarkably improves the postoperative living quality of a patient, and reduces economic and mental burdens.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a non-returnable small bowel stoma tube. Background Technology

[0002] Anastomotic leakage is a serious complication during colorectal cancer surgery. Its occurrence can be influenced by various factors, including male patients, significant intraoperative bleeding, and the proximity of the tumor to the anal verge. Anastomotic leakage not only increases the patient's physical and psychological suffering but can also lead to higher medical costs. To prevent this complication, surgical centers often perform a terminal small bowel stoma (prophylactic small bowel stoma) to divert feces, thereby reducing fecal contamination of the anastomosis and lowering the incidence or severity of anastomotic leakage.

[0003] In traditional approaches, patients typically live with a temporary stoma for 3-6 months after anterior rectal resection, until the rectal anastomosis has healed well. A second small bowel fistula reduction surgery is then performed to restore the original intestinal structure. However, this approach not only increases the number of surgeries and patient suffering but also potentially incurs additional medical costs. Furthermore, post-procedure, the exudate from the small bowel stoma can easily irritate and erode the skin, frequently causing erosive dermatitis and adding to the patient's discomfort. Therefore, we propose a novel non-repositioning small bowel stoma tube. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a non-repositionable enterostomy tube, solving the problem that traditional methods require rectal cancer patients to wear a temporary stoma for 3-6 months after surgery, followed by a second surgery to restore the intestines, increasing the number of surgeries, pain, and costs. Furthermore, after enterostomy, intestinal fluid can easily erode the skin, causing dermatitis.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a non-returnable enterostomy tube, including an outer sleeve, with a main tube support block fixedly installed at the four corners of the inner wall of the outer sleeve. The main tube support block is trapezoidal in shape, and its length direction is consistent with the axial direction of the outer sleeve. A main tube is fixedly installed on the side of the main tube support block away from the inner wall of the outer sleeve, and the main tube extends along the axial direction of the outer sleeve.

[0008] A water bladder is fixedly installed on the outside of the main tube. The water bladder surrounds the main tube. A hollow annular protrusion communicating with the inner cavity of the water bladder is fixedly installed on the outside of the water bladder. The hollow annular protrusion is tightly fitted to the outer wall of the water bladder and is integrally formed. A water injection pipe communicating with the inner cavity of the water bladder is fixedly installed on the water bladder. One end of the water injection pipe is connected to the water bladder, and the other end passes through the outer sleeve and is fixedly connected to the water injection pipe support block fixedly installed on the inner wall of the outer sleeve.

[0009] A lower intestinal support block is fixedly installed on the inner wall of the outer sleeve, away from the water injection pipe support block. A lower intestinal segment, extending axially through the outer sleeve, is fixedly installed inside the lower intestinal support block.

[0010] Preferably, the outer sleeve, main tube, water bladder, water injection tube, and lower intestinal segment are all made of biodegradable biomaterials.

[0011] Preferably, the main tube support block, the water injection tube support block, and the lower intestinal tube support block are all made of collagen.

[0012] Preferably, the water bladder has an annular structure, with its inner ring tightly fitted to the outer wall of the main tube, and its outer ring connected to the hollow annular protrusion. The connection between the water bladder and the main tube and the hollow annular protrusion is seamless.

[0013] Preferably, the connection point between the water injection pipe and the water bladder is located at the bottom of the water bladder, and the water injection pipe and the water bladder are connected by a transition connecting pipe. One end of the transition connecting pipe is connected to the inner cavity of the water bladder, and the other end is connected to the water injection pipe.

[0014] Preferably, the main tube support block, the water injection tube support block, and the lower intestinal tube support block are fixedly connected to the inner wall of the outer sleeve using bio-adhesive.

[0015] Preferably, the outer surface of the hollow annular protrusion is a smooth curved surface, and the inner surface of the hollow annular protrusion fits against the outer surface of the water bladder.

[0016] Preferably, the outer sleeve has open ends, and its inner diameter is larger than the outer diameter of the main tube, the water injection tube, and the lower intestinal tube.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the present invention provides a method with the following beneficial effects:

[0019] 1. This utility model achieves stable fixation and position maintenance of the stoma tube by setting up a main tube support block, a water bladder, and an injection pipe. The main tube support block is trapezoidal in shape, which can distribute the force and enhance the structural stability; the water bladder is set around the main tube and expands by water injection through the injection pipe, closely adhering to the intestinal wall, effectively preventing the stoma tube from shifting, avoiding problems such as poor fecal transfer caused by the easy displacement of traditional stoma tubes, thereby reducing the risk of anastomotic leakage.

[0020] 2. This invention achieves drainage of digestive juices and diversion of feces by setting up a main tube and a lower intestinal segment. The main tube can smoothly drain digestive juices and feces from the intestine, reducing the accumulation of digestive juices in the intestine and their impact on the anastomosis, further reducing the incidence or severity of anastomotic leakage. At the same time, the setting of the lower intestinal segment also facilitates imaging examinations, helping doctors to understand the intestinal recovery status in a timely manner.

[0021] 3. This invention achieves natural degradation of the stoma tube and eliminates the need for secondary surgery by incorporating biodegradable biomaterials and collagen support blocks. The outer sleeve, main tube, water balloon, infusion tube, and lower intestinal segment are all made of biodegradable biomaterials. These components will naturally degrade and be absorbed by the body within a certain period, eliminating the need for a secondary small bowel fistula reduction surgery. Simultaneously, the collagen support block also has excellent biocompatibility and can be absorbed by the body, avoiding the increased number of surgeries, increased pain, and additional medical costs associated with traditional methods, significantly improving the patient's postoperative quality of life. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the hollow annular protrusion structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the main conduit support block structure of this utility model.

[0025] In the picture:

[0026] 1. Outerwear leg;

[0027] 2. Main pipe support block;

[0028] 3. Main pipe;

[0029] 4. Water bladder;

[0030] 5. Hollow annular protrusion;

[0031] 6. Water injection pipe;

[0032] 7. Water injection pipe support block;

[0033] 8. Lower intestinal support block;

[0034] 9. Lower segment of intestine. Detailed Implementation

[0035] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0036] This utility model provides a technical solution:

[0037] Please see Figures 1-3 The non-returnable enterostomy tube includes an outer sleeve 1. A main tube support block 2 is fixedly installed at the four corners of the inner wall of the outer sleeve 1. The main tube support block 2 is trapezoidal in shape and its length direction is consistent with the axial direction of the outer sleeve 1. A main tube 3 is fixedly installed on the side of the main tube support block 2 away from the inner wall of the outer sleeve 1. The main tube 3 extends along the axial direction of the outer sleeve 1.

[0038] A water bladder 4 is fixedly installed on the outside of the main tube 3. The water bladder 4 surrounds the main tube 3. A hollow annular protrusion 5 communicating with the inner cavity of the water bladder 4 is fixedly installed on the outside of the water bladder 4. The hollow annular protrusion 5 is tightly fitted to the outer wall of the water bladder 4 and is integrally formed. A water injection tube 6 communicating with the inner cavity of the water bladder 4 is fixedly installed on the water bladder 4. One end of the water injection tube 6 is connected to the water bladder 4, and the other end passes through the outer sleeve 1 and is fixedly connected to the water injection tube support block 7 fixedly installed on the inner wall of the outer sleeve 1. The water bladder 4 and its accessories (hollow annular protrusion 5 and water injection tube 6) are used to support and fix the position of the stoma tube in the intestine, prevent displacement, ensure smooth flow of feces and digestive juices, reduce the risk of anastomotic leakage, and conveniently inject water into the water bladder 4 through the water injection tube 6 to achieve expansion and fixation.

[0039] A lower intestinal support block 8 is fixedly installed on the inner wall of the outer sleeve 1 away from the water injection pipe support block 7. A lower intestinal tube 9 that penetrates the outer sleeve 1 is fixedly installed inside the lower intestinal support block 8. The lower intestinal tube 9 extends along the axial direction of the outer sleeve 1. The lower intestinal tube 9 and its lower intestinal support block 8 are designed to provide an additional intestinal passage, facilitate the drainage of exudate from the small intestine, prevent skin erosion, and support the contrast examination of the lower intestinal tube 9, which helps to monitor the intestinal recovery and reduce patient suffering and medical costs.

[0040] Furthermore, the outer sleeve 1, main tube 3, water balloon 4, water injection tube 6, and lower intestinal segment 9 are all made of biodegradable biomaterials. By using components made of biodegradable biomaterials, the aim is to allow them to degrade naturally over time, avoiding the need for patients to undergo a second surgery to remove them, reducing the number of surgeries, pain, and medical expenses, and promoting faster recovery for patients.

[0041] Furthermore, the main tube support block 2, the water injection tube support block 7, and the lower intestinal tube support block 8 are all made of collagen. By using collagen to make the support blocks, their biocompatibility in the body can be enhanced, ensuring stable support while being absorbed by the body over time, eliminating the need for additional removal and reducing patient suffering and medical expenses.

[0042] Furthermore, the water bladder 4 has a ring structure, with its inner ring tightly fitting the outer wall of the main tube 3 and its outer ring connected to the hollow ring protrusion 5. The connection between the water bladder 4, the main tube 3, and the hollow ring protrusion 5 is seamless. Through the seamless connection design of the ring water bladder 4, it is ensured that the main tube 3 is stably supported and sealed after being filled with water, reducing the risk of leakage. At the same time, its outer ring is tightly fitted to the hollow ring protrusion 5, which enhances the smoothness of movement in the intestine and reduces tissue damage.

[0043] Furthermore, the connection point between the water injection pipe 6 and the water bladder 4 is located at the bottom of the water bladder 4. The water injection pipe 6 and the water bladder 4 are connected by a transition connecting pipe. One end of the transition connecting pipe is connected to the inner cavity of the water bladder 4, and the other end is connected to the water injection pipe 6. The connection between the water injection pipe 6 and the bottom of the water bladder 4 via the transition connecting pipe ensures that the water flows smoothly to the bottom of the water bladder 4 during water injection, effectively avoiding excessive local pressure or damage to the water bladder 4 caused by water flow impact during water injection, and improving the durability and safety of the water bladder 4.

[0044] Furthermore, the main tube support block 2, the water injection tube support block 7, and the lower intestinal tube support block 8 are fixedly connected to the inner wall of the outer sleeve 1 using bio-adhesive. By using bio-adhesive for fixing, the main tube support block 3, the water injection tube support block 7, and the lower intestinal tube support block 8 can be firmly bonded to the inner wall of the outer sleeve 1, improving the stability and safety of the stoma tube in the body, avoiding displacement or dislodgement, and thus ensuring the treatment effect.

[0045] Furthermore, the outer surface of the hollow annular protrusion 5 is a smooth curved surface, and the inner surface of the hollow annular protrusion 5 fits into the outer surface of the water balloon 4. The smooth curved surface design of the outer surface of the hollow annular protrusion 5 can reduce damage to intestinal tissue. At the same time, its inner surface fits tightly into the water balloon 4 to ensure structural stability, which helps the water balloon 4 to stably support the stoma tube in the intestine, prevent displacement, and ensure the treatment effect.

[0046] Furthermore, the outer sleeve 1 has open ends, and its inner diameter is larger than the outer diameter of the main tube 3, the water injection tube 6, and the lower intestinal segment 9. The open ends of the outer sleeve 1 and the inner diameter being larger than the outer diameter of the internal tubes ensure smooth installation of the tubes, improve the stability and adaptability of the stoma tube in the body, and optimize the surgical procedure and patient recovery experience.

[0047] In practical use, the working principle of this utility model is as follows:

[0048] I. Surgical implantation and initial fixation

[0049] In colorectal cancer surgery, when a small bowel stoma is required, a non-repositionable small bowel stoma tube is implanted into the patient. The open-end structure of the outer sleeve 1 allows it to be easily fitted onto the corresponding part of the intestine. Its inner diameter is larger than the outer diameter of the main tube 3, the infusion tube 6, and the lower bowel segment 9, facilitating the installation of each component and ensuring a good fit with the intestinal tissue. The main tube support block 2, the infusion tube support block 7, and the lower bowel segment support block 8 provide stable support for the main tube 3, the infusion tube 6, and the lower bowel segment 9, respectively. They are fixed to the inner wall of the outer sleeve 1 with bio-adhesive, ensuring the overall stability of the stoma tube structure within the body. The trapezoidal shape of the main tube support block 2 helps to better distribute stress and enhance structural stability.

[0050] The main tube 3 extends axially along the outer sleeve 1, with the water bladder 4 surrounding it. The water bladder 4 is seamlessly connected to the main tube 3, ensuring that the water bladder 4 will not leak when filled with water or air. The hollow annular protrusion 5 is tightly fitted to the outer wall of the water bladder 4 and integrally formed. Its outer surface is a smooth curved surface, which facilitates movement in the intestine and reduces damage to intestinal tissue. One end of the water injection tube 6 is connected to the inner cavity at the bottom of the water bladder 4 through a transition connecting tube, and the other end passes through the outer sleeve 1 and is fixed by the water injection tube support block 7. Water is injected into the water bladder 4 through the water injection tube 6, causing the water bladder 4 to expand. This supports and fixes the stoma tube in the intestine, preventing the stoma tube from shifting. This avoids problems such as poor fecal diversion caused by the easy displacement of traditional stoma tubes and reduces the risk of anastomotic leakage.

[0051] II. Digestive fluid drainage and fecal transfer

[0052] After the surgery, digestive juices in the intestine can be drained through the main tube 3, achieving drainage of digestive juices and reducing the impact of digestive juice accumulation in the intestine on the anastomosis, further reducing the incidence or severity of anastomotic leakage. At the same time, feces in the intestine can also be drained through the main tube 3, achieving fecal diversion and reducing fecal contamination of the anastomosis, effectively reducing the incidence or severity of anastomotic leakage and solving the problem of high anastomotic leakage risk in traditional treatment methods.

[0053] III. Lower intestinal tract contrast examination (if necessary)

[0054] When contrast examination of the lower intestinal segment is required, contrast agent can be injected through the lower intestinal segment 9 to examine its condition and help doctors understand the intestinal recovery status in a timely manner.

[0055] IV. Prevention of intestinal fluid leakage and skin protection

[0056] The exuded intestinal fluid can be discharged through the lower intestinal segment 9, avoiding irritation and erosion of the skin by the intestinal fluid, preventing the occurrence of erosive dermatitis, and reducing the patient's pain.

[0057] V. Degradation and Elimination of Secondary Surgery

[0058] Over time, the outer sleeve 1, main tube 3, water balloon 4, water injection tube 6, and lower intestinal segment 9 are all made of biodegradable biomaterials, and these components will naturally degrade within a certain period of time. The main tube support block 2, water injection tube support block 7, and lower intestinal segment support block 8 are made of collagen, which can also be absorbed by the human body. This eliminates the need for a second small bowel fistula reduction surgery, avoiding the problems of increased surgical frequency, increased pain, and additional medical expenses associated with traditional treatment methods, allowing patients to recover their health more smoothly.

[0059] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A non-returnable enterostomy tube, comprising an outer sleeve (1), characterized in that: A main tube support block (2) is fixedly installed at the four corners of the inner wall of the outer sleeve (1). The main tube support block (2) is trapezoidal in shape and its length direction is consistent with the axial direction of the outer sleeve (1). The main tube support block (2) is fixedly installed with a main tube (3) on the side away from the inner wall of the outer sleeve (1), and the main tube (3) extends along the axial direction of the outer sleeve (1); A water bladder (4) is fixedly installed on the outside of the main tube (3). The water bladder (4) is arranged around the main tube (3). A hollow annular protrusion (5) communicating with the inner cavity of the water bladder (4) is fixedly installed on the outside of the water bladder (4). The hollow annular protrusion (5) is tightly fitted with the outer wall of the water bladder (4) and integrally formed. A water injection pipe (6) communicating with the inner cavity of the water bladder (4) is fixedly installed on the water bladder (4). One end of the water injection pipe (6) is connected to the water bladder (4), and the other end passes through the outer sleeve (1) and is fixedly connected to the water injection pipe support block (7) fixedly installed on the inner wall of the outer sleeve (1). A lower intestinal support block (8) is fixedly installed on the side of the inner wall of the outer sleeve (1) away from the water injection pipe support block (7). A lower intestinal tube (9) that penetrates the outer sleeve (1) is fixedly installed inside the lower intestinal support block (8). The lower intestinal tube (9) extends along the axial direction of the outer sleeve (1).

2. The non-returnable enterostomy tube according to claim 1, characterized in that: The outer sleeve (1), main tube (3), water sac (4), water injection tube (6) and lower intestinal segment (9) are all made of biodegradable biomaterials.

3. The non-returnable enterostomy tube according to claim 1, characterized in that: The main tube support block (2), the water injection tube support block (7), and the lower intestinal tube support block (8) are all made of collagen.

4. The non-returnable enterostomy tube according to claim 1, characterized in that: The water bladder (4) has a ring structure, with its inner ring tightly attached to the outer wall of the main tube (3) and its outer ring connected to the hollow annular protrusion (5). The connection between the water bladder (4), the main tube (3), and the hollow annular protrusion (5) is seamless.

5. The non-returnable enterostomy tube according to claim 1, characterized in that: The connection point between the water injection pipe (6) and the water bladder (4) is located at the bottom of the water bladder (4). The water injection pipe (6) and the water bladder (4) are connected by a transition connecting pipe. One end of the transition connecting pipe is connected to the inner cavity of the water bladder (4), and the other end is connected to the water injection pipe (6).

6. The non-returnable enterostomy tube according to claim 1, characterized in that: The main tube support block (2), the water injection tube support block (7) and the lower intestinal tube support block (8) are fixedly connected to the inner wall of the outer sleeve (1) with bio-adhesive.

7. The non-returnable enterostomy tube according to claim 1, characterized in that: The outer surface of the hollow annular protrusion (5) is a smooth curved surface, and the inner surface of the hollow annular protrusion (5) is in contact with the outer surface of the water bag (4).

8. The non-returnable enterostomy tube according to claim 1, characterized in that: The outer sleeve (1) has open ends, and its inner diameter is larger than the outer diameter of the main tube (3), the water injection tube (6) and the lower intestinal tube (9).

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