Filtering type intestinal juice ostomy bag used after fistulization

Abstract

The fistulization post-operation filtering type intestinal juice ostomy bag comprises an ostomy bag body, wherein one side of the ostomy bag body is provided with an ostomy hole, and the bottom of the ostomy bag body is provided with a backflow pipe. The ostomy bag is vertically divided into an intestinal juice treatment area and an intestinal juice backflow area by arranging a row of filtering layers on the ostomy bag; wherein the filtering layer is formed by arranging a plurality of sealing indentations at intervals, a filtering channel is reserved between every two adjacent sealing indentations, and excrement is filtered out from excrement liquid through the filtering channels; according to the filtration type intestinal juice ostomy bag used after fistulization, by additionally arranging the recovery pipe and the filter element and the check valve inside the recovery pipe and combining the partition design of the second-stage treatment bag, redundant intestinal juice left in the second-stage treatment bag can be effectively recovered. Specifically, after the flow guide opening and the exhaust opening are closed, the excrement area is squeezed, intestinal juice can be secondarily filtered and then conveyed back to the intestinal juice treatment area, then fine separation is conducted through the sealing indentation of the filtering layer and the filtering channel, and finally the intestinal juice enters the backflow area to be recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a filtering enterostomy bag after ostomy surgery. Background Art

[0002] In clinical treatment after colostomy, the fecal fluid produced in the early colostomy stage (such as after neonatal necrotizing enterocolitis surgery) is mostly thin liquid, and enteric fluid needs to be reinfused to maintain the nutritional balance of the child; but when the colostomy enters the later stage (such as the intestinal repair period or the chronic colostomy stage), the amount of intestinal fluid secretion decreases and is often mixed with incompletely digested food residues or inflammatory fibrin clots, forming agglomerated fecal fluid containing high concentrations of nutrients. At this stage, although the digestive and absorptive functions of the intestine have improved, there may still be a certain degree of obstruction. Incompletely digested food residues cannot be completely digested and absorbed due to insufficient secretion of digestive enzymes in the intestine or uncoordinated intestinal peristalsis, resulting in food remaining in the feces. The appearance of inflammatory fibrin clots may be related to the inflammatory response of the intestine. During the inflammatory process, substances such as fibrinogen will seep out and form clots in the intestine, which are mixed in the fecal fluid.

[0003] In the “A Stoma Bag” previously applied for by this unit, it is disclosed that a filter layer is formed by arranging sealing indentations at intervals, thereby creating a filter channel. Such a design not only reduces material and manufacturing costs, but also reduces the resistance problem caused by the complexity of the filter assembly. And the prior art CN207768796U is an intestinal fluid reinfusion ostomy bag with a filtering device, which is mainly composed of an existing ostomy bag, a double-lumen airbag catheter and an intestinal fluid filtering and reinfusion device. It realizes the collection, filtration and reinfusion of intestinal fluid through a one-way valve, an elastic rubber balloon, an intestinal fluid filter membrane and an intestinal fluid reinfusion tube, reduces the use of disposable ostomy bags and the amount of artificial nutrient solution, and maintains the stability of the patient's internal environment. However, the above-mentioned prior applications and prior art do not distinguish between the stage-by-stage needs of intestinal fluid reinfusion: the thin intestinal fluid in the early stage can be directly reinfused, while the agglomerated fecal fluid in the later stage needs to be physically screened to retain the effective intestinal fluid components (such as short-chain fatty acids, electrolytes), while separating the solid residue. Summary of the Invention

[0004] Aiming at the later stage of liquid feces scenario, the present invention proposes a gradient filtration scheme that simplifies the filtration levels and strengthens the mechanical screening of agglomerated feces.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A post-stomosis filtering enterostomy bag comprises an ostomy hole on one side and a reflux pipe at the bottom; the bag is divided into an intestinal fluid processing area and an intestinal fluid reflux area by a row of filter layers; the filter layer is composed of a plurality of sealing indentations arranged at intervals, with filter channels left between adjacent sealing indentations, through which fecal fluid is filtered to remove fecal matter;

[0007] The ostomy bag is provided with a secondary treatment bag corresponding to the top of the filter layer and connected to the intestinal fluid treatment area. The secondary treatment bag is divided into a diversion area and a feces area. A diversion port and an exhaust port for discharging excess gas are provided below the diversion area and the feces area respectively. Part of the fecal liquid enters the feces area through the diversion port of the diversion area.

[0008] The secondary treatment bag corresponds to a recovery pipe above the exhaust port and is connected to the fecal area. The other end of the reflux pipe is connected to the intestinal fluid treatment area, wherein the recovery pipe is also provided with a filter core and a check valve. The diversion port and the exhaust port are closed and the fecal area of the secondary treatment bag is squeezed, so that the excess intestinal fluid is recovered to the intestinal fluid treatment area through the filter core and the check valve, and then filtered again by the filter layer to enter the intestinal fluid reflux area.

[0009] Furthermore, the upper and lower staggered distribution between adjacent sealing indentations increases the filtration aperture size.

[0010] Furthermore, a scale mark B is provided on the intestinal fluid reflux area for observing the intestinal fluid volume.

[0011] Furthermore, a reflux guide pipe opening is provided above the ostomy bag, and a detachable sealing cap is provided on the reflux guide pipe opening, wherein the reflux pipe can pass through the reflux guide pipe opening and be led out from the stoma hole.

[0012] Furthermore, a scale mark A is provided near the end of the reflux tube for observing the insertion depth.

[0013] Furthermore, it also includes a bottom plate connected to the stoma, and the side of the bottom plate away from the stoma is connected to the stoma hole.

[0014] Furthermore, the diversion port and the exhaust port are staggered to facilitate the transition of feces liquid and the deposition of feces.

[0015] Furthermore, switches are provided on the outside of the secondary treatment bag at the corresponding guide port and exhaust port.

[0016] Furthermore, an exhaust pipe is provided below the exhaust port at the bottom of the secondary treatment bag.

[0017] The beneficial effects of the technical solution provided by this application are:

[0018] This post-stomosis filtering enterostomy bag can effectively recover excess intestinal fluid retained in the secondary treatment bag by adding a recovery tube and its internal filter element and check valve, combined with the partition design of the secondary treatment bag. Specifically: After closing the diversion port and the exhaust port, the fecal area can be squeezed to return the intestinal fluid to the intestinal fluid treatment area after secondary filtration, and then finely separated through the sealing indentation and filter channel of the filter layer, and finally the intestinal fluid enters the reflux area for reuse. This process significantly improves the reflux efficiency of the intestinal fluid, reduces the loss of nutrients, and at the same time avoids blockage problems caused by the accumulation of impurities, ensuring the continuity and stability of the intestinal fluid return. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of the filter-type enterostomy bag after ostomy surgery of the present invention;

[0021] Figure 2 This is a partially enlarged schematic diagram of a filtering enterostomy bag after ostomy surgery of the present invention;

[0022] Figure 3 This is a schematic diagram of the back of the ostomy bag of the present invention;

[0023] Figure 4 It is a partial cross-sectional view of the back side of the ostomy bag of the present invention.

[0024] In the figure: 10 ostomy bag, 11 ostomy hole, 12 reflux pipe, 13 intestinal fluid treatment area, 14 intestinal fluid reflux area; 20 filter layer, 21 sealing indentation, 22 filter channel; 30 secondary treatment bag, 31 diversion area, 32 feces area, 33 diversion port, 34 exhaust port, 35 recovery pipe, 36 filter element, 37 check valve, 38 switch, 39 exhaust pipe; 40 scale mark A, 50 reflux guide pipe port, 60 scale mark B, 70 chassis. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] Reference Figure 1-4A post-stomosis filtering enteroscopic bag comprises an ostomy bag 10 having a stoma hole 11 on one side and a reflux pipe 12 at the bottom; the ostomy bag 10 is divided into an intestinal fluid treatment area 13 and an intestinal fluid reflux area 14 by arranging a row of filter layers 20; wherein the filter layer 20 is composed of a plurality of sealing indentations 21 arranged at intervals, and a filtering channel 22 is left between adjacent sealing indentations 21, and fecal liquid is filtered out of fecal matter through the filtering channel 22.

[0027] The stoma hole 11 is located on one side of the stoma bag 10 and is used to drain intestinal fluid from the proximal enterostomy of the newborn to the intestinal fluid treatment area 13 inside the stoma bag 10. The filter layer 20 is arranged on the stoma bag 10 and is composed of a plurality of sealing indentations 21 arranged at intervals to form filter channels 22. These filter channels allow liquid and useful substances in the intestinal fluid to pass through while intercepting larger particles and impurities. Nutrients can flow smoothly from the intestinal fluid treatment area 13 to the intestinal fluid reflux area 14 and be returned to the distal enterostomy of the newborn through the reflux pipe 12. The intestinal fluid treatment area 13 is located above the filter layer 20 and is used to collect intestinal fluid entering from the stoma hole 11. The intestinal fluid is filtered in this area. The intestinal fluid reflux area 14 is located below the filter layer 20 and collects intestinal fluid filtered by the filter layer and is returned to the newborn through the reflux pipe 12.

[0028] Intestinal fluid from the neonate's proximal enterostomy is received through the stoma hole 11 and flows into the intestinal fluid processing area 13. Within this area, the intestinal fluid is filtered through the filter channel 22 of the filter layer 20 to remove large particles and impurities. The filtered intestinal fluid then flows into the intestinal fluid recirculation area 14 and is directed back to the neonate's distal enterostomy through the return pipe 12, enabling intestinal fluid reuse and nutrient absorption. Throughout this process, the design of the filter layer 20 effectively balances filtration efficiency and intestinal fluid flow resistance, ensuring the continuity and efficiency of intestinal fluid reinfusion while reducing the cost and maintenance difficulty associated with the complexity of the filtration components.

[0029] In this technical solution, further optimization is achieved by utilizing the function and structure of the secondary treatment bag 30. The secondary treatment bag 30 is connected to the intestinal fluid treatment area 13 of the ostomy bag 10, and its interior is designed as two areas: a diversion area 31 and a fecal area 32. A diversion port 33 and an exhaust port 34 are provided below the diversion area 31 and the fecal area 32, respectively. After the discharged liquid is filtered through the filter channel 22, the remaining fecal liquid enters the fecal area 32 through the diversion port 33. In addition, the secondary treatment bag 30 is also provided with a recovery pipe 35, one end of which is connected to the fecal area 32 and the other end is connected to the intestinal fluid treatment area 13. A filter core 36 and a check valve 37 are installed inside the recovery pipe 35. By closing the diversion port 33 and the exhaust port 34 and squeezing the fecal area 32, the excess intestinal fluid can be recovered to the intestinal fluid treatment area 13 through the filter core 36 and the check valve 37, and then enter the intestinal fluid reflux area 14 through the fine filtration of the filter layer 20.

[0030] By closing the diversion port 33 and the exhaust port 34 and squeezing the fecal area 32 of the secondary treatment bag 30, the excess intestinal fluid originally retained in the fecal area 32 is recycled. The filter core 36 provided in the recovery pipe 35 performs secondary filtration on the intestinal fluid to remove possible residual impurities, while the check valve 37 ensures that the intestinal fluid can only flow in one direction to prevent backflow. The intestinal fluid that has undergone preliminary filtration re-enters the intestinal fluid treatment area 13 and is again separated more finely through the sealing indentation 21 and the filter channel 22 of the filter layer 20. This process not only improves the reflux efficiency of the intestinal fluid and reduces the loss of nutrients, but also avoids the blockage problem caused by the accumulation of impurities, and ensures the continuity and stability of the intestinal fluid return. Through such a design, the post-stomosis filtering enterostomy bag of the present invention can more efficiently manage the intestinal fluid in the late stage of ostomy, providing better care for newborns.

[0031] In some embodiments, the adjacent sealing indentations 21 are staggered up and down. The special design of the filter layer 20 is that the sealing indentations 21 it constitutes are not simply arranged side by side or in a straight line, but are staggered up and down. This staggered arrangement means that the sealing indentations 21 in each row are staggered a certain distance relative to the adjacent upper or lower row, forming a stepped or checkerboard-like layout. The design of the sealing indentations 21 with staggered distribution up and down can increase the surface area of the filter channel 22, thereby improving the filtration efficiency. When the intestinal fluid flows into the intestinal fluid treatment area 13, the staggered sealing indentations 21 can more effectively disperse the intestinal fluid, reduce the accumulation of liquid on the filter layer 20, and avoid the decrease in filtration efficiency or blockage of the filter channel 22 due to local overload. At the same time, this design also helps to reduce the resistance of the filter layer 20 to the flow of intestinal fluid, because the staggered arrangement can reduce dead corners and turbulence during the flow of intestinal fluid, allowing the intestinal fluid to pass through the filter channel 22 more smoothly and enter the intestinal fluid reflux area 14.

[0032] In some embodiments, the intestinal fluid reflux area 14 is provided with a scale mark B60 for observing the intestinal fluid volume. After the intestinal fluid enters the reflux area 14 through the filter layer, the scale mark B60 indicates the current liquid level status through color segmentation (such as yellow warning area, green safety area). The scale mark B60 provides medical staff with a real-time volume monitoring basis of the intestinal fluid reflux area 14 through preset capacity scale lines and time axis logos, solving the problem of recording deviation caused by the traditional ostomy bag relying on subjective estimation; its linearly distributed transparent observation window is combined with the gradient density scale (such as a fixed liquid level line corresponding to each hour), which supports medical staff to directly read the cumulative reflux volume and record the operation time, facilitating dynamic evaluation of intestinal fluid recovery efficiency and adjustment of the airbag squeezing frequency.

[0033] In some embodiments, a reflux guide tube port 50 is provided above the ostomy bag 10, and a detachable sealing cap is provided on the reflux guide tube port 50, wherein the reflux tube 12 can pass through the reflux guide tube port 50 and be led out of the stoma hole 11. The reflux guide tube port 50 is designed with a detachable sealing cap to provide a dual-mode adaptation function for a double-lumen stoma environment: in a double-lumen scenario where the proximal and distal stomas are in the same position, after removing the sealing cap, the reflux tube 12 is allowed to pass through the guide tube port 50 and be inserted into the distal stoma, thereby realizing the cross-lumen return of intestinal fluid; in an ectopic double-lumen scenario, the sealing cap maintains the sealing of the main body of the ostomy bag 10, and the reflux tube 12 is independently inserted into the distal stoma, avoiding the risk of foreign body friction or cross-contamination of the cavity due to the presence of the guide tube port 50, thereby being compatible with the clinical needs of different anatomical structures. Specifically: when the proximal and distal stomas are in the same position, after the sealing cap is removed, the reflux tube 12 is inserted into the distal stoma through the guide channel of the guide tube opening 50, and the intestinal fluid enters the reflux tube 12 through the internal flow channel of the ostomy bag 10 to achieve cross-cavity return; when the stoma is out of position, the sealing cap closes the guide tube opening 50, and the reflux tube 12 independently passes through the stoma hole 11 and is directly inserted into the distal stoma.

[0034] In some embodiments, a graduated mark A40 is provided near the distal end of the reflux tube 50 to indicate insertion depth. During distal stoma insertion, medical personnel control the advancement of the reflux tube 50 based on a preset threshold (using different color-coded markers to indicate different depth warnings) at the graduated mark A40, ensuring the tip of the tube is positioned within the effective intestinal drainage area.

[0035] Some embodiments also include a base tray 70 connected to the stoma, with the side of the base tray 70 away from the stoma connected to the stoma hole 11. The base tray 70 is a component that is directly connected to the newborn's stoma. Its function is to secure and seal the ostomy bag 10, ensuring that intestinal fluid can flow smoothly from the stoma into the ostomy bag 10. The base tray 70 is designed with a specific structure that allows it to fit tightly against the newborn's skin. At the same time, the side away from the stoma is connected to the stoma hole 11. The working principle of the base tray 70 is based on its sealed connection with the stoma. It serves as the base of the ostomy bag 10 and provides a stable starting point for the collection and return of intestinal fluid. One side of the base tray 70 is connected to the newborn's stoma, and through its adaptive design, it ensures a close fit with the skin around the stoma to prevent intestinal fluid leakage. The other side of the base tray 70 is connected to the stoma hole 11, forming a channel for intestinal fluid from the stoma to the ostomy bag 10. When the newborn produces intestinal fluid, the intestinal fluid first flows into the base tray 70 and then enters the intestinal fluid processing area 13 of the ostomy bag 10 through the stoma hole 11. The design of the chassis 70 may also include a mechanism for facilitating installation and replacement, as well as ensuring comfort and breathability of the portion in contact with the newborn's skin to avoid skin problems that may result from prolonged wear.

[0036] In some embodiments, by setting the diversion port 33 and the exhaust port 34 to be staggered, that is, non-vertically aligned, a gradient transition of the manure liquid flow path is formed. The diversion port 33 is located at the upper part or side of the feces area 32, guiding the feces into the feces area, where they are gradually deposited due to gravity; while the exhaust port 34 is located at the side of the bottom of the feces area 32. The staggered design extends the flow path of the feces in the diversion area 31, promotes the natural sedimentation of solid feces in the feces area 32, reduces the risk of pipeline blockage caused by the mixing of liquid and solid, and ensures clear stratification of the feces. The staggered distribution design changes the fluid dynamics characteristics, making it easier for heavier solid particles to settle at the bottom of the feces area 32, while the lighter liquid components are easily pressed into the recovery pipe 35.

[0037] In some embodiments, switches 38 are provided on the outside of the secondary treatment bag 30, corresponding to the diversion port 33 and the exhaust port 34, respectively, to independently control the opening and closing states of the two outlets. The switch 38 of the diversion port 33 serves as the on-off switch for the flow of fecal liquid from the diversion area 31 to the fecal area 32; the switch 38 of the exhaust port 34 controls the timing of the discharge of excess gas from the fecal area 32. This design prevents intestinal fluid backflow or fecal fluid reverse osmosis by precisely controlling the liquid flow path and flow rate, thereby ensuring the effectiveness of the zoning function within the secondary treatment bag. The external setting of the switch 38 allows caregivers to complete the operation without having to directly contact the interior of the secondary treatment bag, reducing the risk of contamination. By manually adjusting the opening and closing degree of the switch 38, it is possible to flexibly respond to different fecal liquid flow requirements and quickly seal the system when recovering intestinal fluid, providing pressure conditions for subsequent squeezing of the fecal area 32. In addition, the sealing design of the switch 38 prevents liquid leakage and maintains the overall hygiene and safety of the device. The switch 38 controls the opening and closing states of the diversion port 33 and the exhaust port 34 through external mechanical control. During the fecal liquid diversion stage, the diversion port is kept open and the exhaust port is closed to ensure that the fecal liquid is preferentially deposited in the fecal area 32. During the intestinal fluid recovery stage, the two switches are closed, and the intestinal fluid is squeezed into the fecal area 32 to force the intestinal fluid into the recovery tube 35.

[0038] In some embodiments, an exhaust pipe 39 is provided below the exhaust port 34. The exhaust pipe 39 can be used to exhaust excess gas in the ostomy bag 10 and the secondary treatment bag 30 to prevent air expansion from affecting the entry of fecal fluid. During use, the diversion port 33 is closed but the exhaust port 34 is not closed. The secondary treatment bag 30 is flipped upward so that the exhaust pipe 39 faces upward. At this time, the fecal area 32 of the secondary treatment bag 30 is squeezed, so that excess intestinal fluid is recovered to the intestinal fluid treatment area 13 through the filter core 36 and the check valve 37, and then filtered again by the filter layer 20 to enter the intestinal fluid reflux area 14. During this process, excess gas in the secondary treatment bag 30 can be discharged. After the operation is completed, the exhaust port 34 is closed to prevent feces from being squeezed out.

[0039] In some embodiments, by designing the bottoms of the diversion area 31 and the feces area 32 to be slanted or curved, gravity is used to guide the natural flow of liquid and solid particles. The slanted bottom of the diversion area 31 encourages liquid feces to flow quickly toward the diversion port 33, reducing liquid retention. The curved or inclined bottom of the feces area 32, through its fluid dynamics, causes heavier solid feces to slide along the curved or inclined surface toward the exhaust port 34, where they are concentrated and deposited, while the lighter liquid components remain in a fluid state. This design optimizes solid-liquid separation efficiency and reduces the risk of blockage caused by feces accumulation.

[0040] After ostomy surgery, a filter-type enterostomy bag incorporates a crucial component: a reflux peristaltic pump. This pump provides stable delivery power and is designed to work in conjunction with a reflux tube 50. The reflux tube 50 passes through the peristaltic pump, which, through its pumping mechanism, provides the necessary pressure for the flow of intestinal fluid.

[0041] In the post-stomosis filtering enterostomy bag, the function of the reflux peristaltic pump is to provide continuous and gentle power for the intestinal fluid to flow back from the ostomy bag 10 into the newborn's body. After the intestinal fluid is filtered through the filter layer 20 and enters the intestinal fluid reflux area 14, the reflux peristaltic pump starts working, and through its internal rollers or rotors and other driving components, it exerts a squeezing effect on the intestinal fluid in the reflux tube 50. This squeezing effect allows the intestinal fluid to pass through the reflux tube 50 at a continuous and uniform flow rate, and then reach the distal enterostomy. The working principle of the peristaltic pump is similar to the peristalsis of the intestine, and can simulate natural intestinal movements, thereby reducing irritation to the intestinal wall and avoiding damage to the nutrients in the intestinal fluid.

[0042] In addition, the reflux peristaltic pump can adjust its operating speed and pressure to adapt to the physiological needs of different newborns and the changes in intestinal fluid viscosity. By precisely controlling the speed and amount of intestinal fluid return, it can better promote the recovery of newborn intestinal function and nutrient absorption.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A post-stomosis filtering enteric fluid ostomy bag, comprising an ostomy bag (10) having a stoma hole (11) on one side and a reflux tube (12) at the bottom; characterized in that: The ostomy bag (10) is divided into an intestinal fluid processing area (13) and an intestinal fluid reflux area (14) by arranging a row of filter layers (20); wherein the filter layer (20) is composed of a plurality of sealing indentations (21) arranged at intervals, and filter channels (22) are left between adjacent sealing indentations (21), and fecal fluid is filtered out of fecal matter through the filter channels (22); The ostomy bag (10) is provided with a secondary treatment bag (30) corresponding to the top of the filter layer (20) and connected to the intestinal fluid treatment area (13). The secondary treatment bag (30) is divided into a diversion area (31) and a feces area (32). A diversion port (33) and an exhaust port (34) for discharging excess gas are provided below the diversion area (31) and the feces area (32), respectively. Part of the fecal fluid enters the feces area (32) through the diversion port (33) of the diversion area (31); The secondary treatment bag (30) corresponds to a recovery pipe (35) above the exhaust port (34) and connected to the feces area (32), and the other end of the reflux pipe (35) is connected to the intestinal fluid treatment area (13), wherein the recovery pipe (35) is also provided with a filter core (36) and a check valve (37); the diversion port (33) and the exhaust port (34) are closed and the feces area (32) of the secondary treatment bag (30) is squeezed, so that the excess intestinal fluid is recovered to the intestinal fluid treatment area (13) through the filter core (36) and the check valve (37), and then filtered again by the filter layer (20) and enters the intestinal fluid reflux area (14).

2. The post-ostomy filtering enterostomy bag according to claim 1, characterized in that: The upper and lower staggered distribution between adjacent sealing indentations (21) increases the number of filter apertures.

3. The post-ostomy filtering enterostomy bag according to claim 1, characterized in that: The intestinal fluid reflux area (14) is provided with a scale mark B (60) for observing the intestinal fluid volume.

4. The post-ostomy filtering enterostomy bag according to claim 1, wherein: A reflux guide pipe opening (50) is provided above the ostomy bag (10), and a detachable sealing cap is provided on the reflux guide pipe opening (50), wherein the reflux pipe (12) can pass through the reflux guide pipe opening (50) and be led out from the stoma hole (11).

5. The post-ostomy filtering enterostomy bag according to claim 4, characterized in that: The return pipe (50) is provided with a scale mark A (40) near the end thereof for observing the insertion depth.

6. The post-ostomy filtering enterostomy bag according to claim 4, characterized in that: It also includes a bottom plate (70) connected to the stoma, and the side of the bottom plate (70) away from the stoma is connected to the stoma hole (11).

7. The post-ostomy filtering enterostomy bag according to claim 1, characterized in that: The diversion port (33) and the exhaust port (34) are staggered to facilitate the deposition of feces by transferring feces liquid.

8. The post-ostomy filtering enterostomy bag according to claim 1, characterized in that: Switches (38) are respectively provided on the outside of the secondary treatment bag (30) at positions corresponding to the flow guide port (33) and the exhaust port (34).

9. The post-ostomy filtering enterostomy bag according to claim 1, wherein: An exhaust pipe (39) is provided at the bottom of the secondary treatment bag (30) below the exhaust port (34).

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