Colostomy bag with anti-reflux function

Abstract

The invention relates to the technical field of medical instruments, in particular to a colon ostomy bag with an anti-reflux function. Comprising a colon ostomy bag, a buffering flow dividing cavity, an ostomy base plate, a one-way sealing channel formed in the bottom of the buffering flow dividing cavity, a water absorption cavity formed below the one-way sealing channel, split type water absorption bags detachably arranged on the two side walls of the water absorption cavity, and a lower discharging opening communicated with the bottom of the water absorption cavity. The one-way sealing channel (the elastic flat sleeve) provides a first physical barrier to prevent backflow of contents in the water absorption cavity; the split type water absorption bag in the water absorption cavity solidifies the liquid excrement through the water absorption filling layer, the mobility is eliminated from the source, a second chemical barrier is achieved, the two components act synergistically, and the backflow prevention effect is reliable. The split type water absorption bag is arranged in the outer wall storage pocket and communicated with the water absorption cavity through the water permeable layer, the water absorption bag can be independently replaced after water absorption saturation, the whole ostomy bag does not need to be discarded, the use cost is reduced, and medical waste is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a colostomy bag with anti-reflux function. Background Technology

[0002] Colostomy is a common surgical procedure for treating diseases such as colorectal cancer and inflammatory bowel disease. Post-operatively, patients need to wear an ostomy bag for long-term waste collection. Current ostomy bags are mainly divided into one-piece and two-piece types. While they can meet basic collection needs, they have significant shortcomings in preventing reflux: when the patient changes position (such as lying down or turning over) or abdominal pressure increases, the liquid waste inside the bag can easily flow back into the stoma, irritating the skin around the stoma and causing dermatitis, infection, and other problems. Furthermore, traditional ostomy bags are prone to leakage during changes, causing great inconvenience and psychological burden to both patients and caregivers.

[0003] To address these issues, existing technologies have developed colostomy bags with one-way valves or absorbent layers. However, one-way valves have poor permeability to formed feces and are prone to clogging. Therefore, there is an urgent need for a colostomy bag with a reasonable structure, reliable anti-reflux effect, and easy replacement. Summary of the Invention

[0004] The purpose of this invention is to provide a colostomy bag with anti-reflux function, which solves the problems of easy backflow of liquid excrement and easy blockage of one-way valve in conventional colostomy bags.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a colostomy bag with anti-reflux function, comprising a colostomy bag, a buffer diversion cavity disposed within the colostomy bag, an ostomy base plate communicating with the buffer diversion cavity, a one-way sealing channel disposed at the bottom of the buffer diversion cavity, an absorbent cavity disposed below the one-way sealing channel, a split absorbent bag detachably disposed on both sides of the absorbent cavity, and a lower discharge port communicating with the bottom of the absorbent cavity; The colostomy bag has symmetrically arranged storage pockets on its outer wall, and the split-type absorbent bag is arranged inside the storage pockets. A water-permeable layer is arranged on the side wall of the absorbent cavity corresponding to the position of the split-type absorbent bag.

[0006] In this embodiment, the permeable layer is further provided with permeable holes for water absorption.

[0007] Furthermore in this embodiment, the split-type absorbent bag is filled with an absorbent filling layer.

[0008] Furthermore, in this embodiment, the storage pocket is provided with a lock-edge closure for easy opening and closing.

[0009] Furthermore, in this embodiment, the water absorption cavity has a structure that is wider at the top and narrower at the bottom.

[0010] Furthermore, in this embodiment, an exhaust mechanism is provided at the top of the buffer diversion cavity. The exhaust mechanism is a carbon sheet vent hole used for combing air through the carbon sheet.

[0011] In this embodiment, the one-way sealing channel further includes an enlarged communication port that is sealed and connected to the bottom of the buffer diversion cavity, an elastic flat sleeve disposed below the enlarged communication port, and an elastic guide slope connecting the elastic flat sleeve and the enlarged communication port; the elastic flat sleeve and the elastic guide slope are made of silicone; when not defecating, the elastic flat sleeve is in a flat and normally closed state.

[0012] Furthermore in this embodiment, there is a height difference between the permeable layer and the bottom of the elastic flat sleeve.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are as follows: 1) Dual anti-backflow mechanism: The one-way sealed channel (elastic flat sleeve) provides the first physical barrier to prevent the contents of the absorbent chamber from flowing back; the split absorbent bag in the absorbent chamber solidifies the liquid excrement through the absorbent filling layer, eliminating the fluidity from the source and achieving the second chemical barrier. The two work together to ensure a reliable anti-backflow effect.

[0014] 2) Replaceable absorbent bag design: The separate absorbent bag is placed inside the storage pocket on the outer wall and is connected to the absorbent cavity through the water-permeable layer. It can be replaced separately after it is saturated with water, without having to discard the entire ostomy bag, reducing usage costs and medical waste.

[0015] 3) Adapting to the characteristics of colonic feces: The one-way sealing channel adopts an elastic flat sleeve structure, which naturally opens during defecation by relying on the weight of the feces or the pressure of intestinal peristalsis, allowing even formed feces to pass through smoothly; when not defecting, the flat sleeve closes, ensuring a reliable seal and preventing blockage.

[0016] 4) Exhaust and buffering functions: The carbon sheet vent holes at the top of the buffer diversion chamber can discharge gas in time to prevent the bag from bulging; the buffer diversion chamber can be equipped with guide ribs to reduce the impact of excrement and achieve gas-liquid separation.

[0017] 5) Easy to observe and replace: The external storage pocket has a locked closure, making it easy to take out and put in the separate absorbent bag; the absorbent cavity has a wide top and narrow bottom structure, which helps the contents to gather, and the bottom discharge port makes it easy to empty. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 A schematic diagram of the colostomy bag structure; Figure 2 for Figure 1 Schematic diagram of section AA; Figure 3 for Figure 2 Enlarged view of a portion of the image; Figure 4 A schematic diagram of the split-type pocket structure on the colostomy bag; Figure 5 This is a schematic diagram of a one-way sealed channel structure.

[0020] Explanation of reference numerals in the attached diagram: 1. Colostomy bag; 11. Permeable layer; 111. Permeable hole; 12. Storage bag; 13. Sealing edge; 2. Stoma base plate; 3. Buffer diversion chamber; 31. Exhaust mechanism; 4. One-way sealing channel; 41. Enlarged connecting port; 42. Elastic guide slope; 43. Elastic flat sleeve; 5. Split-type absorbent bag; 6. Absorbent chamber; 7. Lower discharge port. Detailed Implementation

[0021] Example 1 refer to Figure 1 and Figure 2 This embodiment discloses a colostomy bag with anti-reflux function, including a colostomy bag 1, a buffer diversion cavity 3 integrally formed in the colostomy bag 1, an ostomy base plate 2 communicating with the buffer diversion cavity 3, a one-way sealing channel 4 installed at the bottom of the buffer diversion cavity 3, an absorbent cavity 6 installed below the one-way sealing channel 4, a split absorbent bag 5 detachably installed on both sides of the absorbent cavity 6, and a lower discharge port 7 communicating with the bottom of the absorbent cavity 6; wherein a storage bag 12 is symmetrically installed on the outer wall of the colostomy bag 1, the split absorbent bag 5 is laid flat in the storage bag 12, and a permeable layer 11 is designed on the side wall of the absorbent cavity 6 corresponding to the position of the split absorbent bag 5.

[0022] In this embodiment, the bottom opening of the buffer diversion cavity 3 has an exhaust mechanism 31 at its top. The exhaust mechanism 31 is a carbon sheet with venting holes and an internal activated carbon sheet, which can absorb odors and expel excess gas to prevent the bag from bloating. In this embodiment, it is used to guide the excrement to fall in a rotating manner and slow down the flow rate. The buffer diversion cavity 3 can be designed with spiral guide ribs inside to achieve preliminary gas-liquid separation.

[0023] refer to Figure 2The bottom of the buffer diversion cavity 3 is connected to a one-way sealing channel 4. The one-way sealing channel 4 includes an enlarged connecting port 41, an elastic guiding slope 42, and an elastic flat sleeve 43. The enlarged connecting port 41 is sealed and connected to the bottom of the buffer diversion cavity 3, and the elastic guiding slope 42 is connected below it. The elastic guiding slope 42 gradually narrows downwards, and its end is connected to the elastic flat sleeve 43. The elastic flat sleeve 43 and the elastic guiding slope 42 are both flat sleeves made of silicone material. In their natural state, their front and rear walls are in a closed state, and they only open when subjected to the gravity of the excrement above or the pressure of intestinal peristalsis. The lower opening of the elastic flat sleeve 43 is located in the upper part of the water absorption cavity 6. In this embodiment, the enlarged connecting port 41 can be connected to the buffer diversion cavity 3 by means of threads or snap-fit ​​connection.

[0024] The water-absorbing chamber 6 is located below the one-way sealing channel 4, and its overall shape is a cone, wider at the top and narrower at the bottom, which facilitates the accumulation of contents at the bottom. The bottom of the water-absorbing chamber 6 has a lower discharge port 7 for discharging solid residue or emptying when replacing the water-absorbing bag. Water-permeable layers 11 are symmetrically arranged on the left and right side walls of the water-absorbing chamber 6, and multiple water-permeable holes 111 are evenly distributed on the water-permeable layers 11. There is a certain height difference H between the water-permeable layers 11 and the bottom of the elastic flat sleeve 43 (reference). Figure 2 As shown in the figure, this height difference prevents the liquid in the suction chamber 6 from directly contacting the outlet of the one-way sealed channel.

[0025] On the outer wall of the colostomy bag body 1, corresponding to the positions of the permeable layers 11 on both sides of the absorbent cavity 6, there is a storage pocket 12. The storage pocket 12 is made of transparent soft material, and its opening is provided with a lock-edge seal 13 (such as a zipper seal) for easy opening and closing. A separate absorbent bag 5 is detachably placed inside the storage pocket 12. The separate absorbent bag 5 is filled with an absorbent filling layer, which is preferably a water-absorbing core made of superabsorbent polymer (SAP) and non-woven fabric, and has high liquid absorption and retention properties. The shape of the separate absorbent bag 5 matches that of the storage pocket 12. When placed inside, its inner side is tightly attached to the permeable layer 11, and it can absorb liquid excrement in the absorbent cavity 6 through the permeable holes 111.

[0026] The working process of this embodiment: In use, the stoma base plate 2 is first attached to the skin around the stoma, connecting the stoma to the buffer diversion chamber 3. When the patient defecates, excrement (including gas, liquid, and formed feces) enters the buffer diversion chamber 3. Gas is discharged through the exhaust mechanism 31 at the top, while liquid and solid matter fall along the buffer diversion chamber 3 under gravity. When the excrement reaches the one-way sealed channel 4, its gravity or intestinal peristalsis pressure causes the elastic sleeve 43 to open, allowing the excrement to fall through the elastic sleeve 43 into the absorbent chamber 6 below. After the excrement passes through, the elastic sleeve 43 returns to its flat, closed state due to the elasticity of the silicone, strictly preventing backflow of substances within the absorbent chamber 6. Liquid excrement entering the absorbent chamber 6 comes into contact with the permeable layers 11 on both sides and is absorbed by the split absorbent bag 5 inside the storage bag 12 through the permeable holes 111. The absorbent filling layer quickly solidifies the liquid to form a gel, making the liquid lose its fluidity and thus completely preventing backflow. Formed solid feces fall directly into the bottom of the absorbent chamber 6 and can be periodically discharged through the lower discharge port 7. When the split absorbent bag 5 is saturated, the patient can remove the old bag and replace it with a new one through the locking seal 13 of the storage bag 12, without having to disassemble the entire ostomy bag. The height difference between the bottom of the permeable layer 11 and the elastic flat sleeve 43 ensures that the liquid in the absorbent chamber 6 will not rise to the one-way sealed channel due to capillary action, further enhancing the reliability of backflow prevention.

[0027] Example 2 This embodiment is basically the same as Embodiment 1, except that: the permeable layer 11 is made of a hydrophilic microporous membrane with a pore size of less than 0.5 μm, which only allows liquid to pass through while blocking bacteria and odor molecules; the absorbent filling layer of the split absorbent bag 5 contains an indicator that changes color when it comes into contact with water (such as anhydrous copper sulfate). When the bag is saturated with water, the color of the bag changes, prompting the patient to replace it in time.

[0028] Example 3 This embodiment is basically the same as embodiment 1, except that: the locking edge seal 13 of the storage bag 12 adopts a self-sealing sealing strip, and the split absorbent bag 5 is vacuum compressed packaging. When in use, it is taken out and placed into the storage bag 12, and the sealing strip automatically adheres to ensure airtightness.

[0029] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A colostomy bag with anti-reflux function, characterized in that: Includes a colostomy bag (1), a buffer diversion chamber (3) disposed in the colostomy bag (1), a stoma base plate (2) communicating with the buffer diversion chamber (3), a one-way sealing channel (4) disposed at the bottom of the buffer diversion chamber (3), a water absorption chamber (6) disposed below the one-way sealing channel (4), a split-type water absorption bag (5) detachably disposed on both sides of the water absorption chamber (6), and a lower discharge port (7) communicating with the bottom of the water absorption chamber (6); A storage pocket (12) is symmetrically arranged on the outer wall of the colostomy bag (1), and the split absorbent bag (5) is arranged inside the storage pocket (12). A permeable layer (11) is arranged on the side wall of the absorbent cavity (6) at the position corresponding to the split absorbent bag (5).

2. The colostomy bag with anti-reflux function according to claim 1, characterized in that: The permeable layer (11) is provided with permeable holes (111) for water absorption.

3. The colostomy bag with anti-reflux function according to claim 2, characterized in that: The split-type absorbent bag (5) is filled with an absorbent filling layer.

4. The colostomy bag with anti-reflux function according to claim 3, characterized in that: The storage pocket (12) is provided with a lock closure (13) for easy opening and closing.

5. The colostomy bag with anti-reflux function according to claim 1, characterized in that: The water absorption cavity (6) has a structure that is wider at the top and narrower at the bottom.

6. The colostomy bag with anti-reflux function according to claim 1, characterized in that: An exhaust mechanism (31) is provided at the top of the buffer diversion chamber (3). The exhaust mechanism (31) is a carbon sheet vent hole used for combing air through the carbon sheet.

7. The colostomy bag with anti-reflux function according to claim 1, characterized in that: The one-way sealed channel (4) includes an enlarged connecting port (41) that is sealed and connected to the bottom of the buffer diversion cavity (3), an elastic flat sleeve (43) disposed below the enlarged connecting port (41), and an elastic guiding slope (42) that connects the elastic flat sleeve (43) and the enlarged connecting port (41); the elastic flat sleeve (43) and the elastic guiding slope (42) are made of silicone; when not defecating, the elastic flat sleeve (43) is in a flat and normally closed state.

8. The colostomy bag with anti-reflux function according to claim 7, characterized in that: There is a height difference between the permeable layer (11) and the bottom of the elastic flat sleeve (43).

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