A special wading ostomy base with indication function and an ostomy system

Abstract

The application discloses a special water-wading ostomy bottom disc with an indicating function and an ostomy system. The ostomy bottom disc comprises a first cannula (1), one end of the first cannula (1) extends radially outward to form a flange (2), an adhesive layer (3) is arranged on the bottom surface of the flange (2), the adhesive layer (3) extends radially outward beyond the flange (2), a reinforcing layer (4) and a water-proof layer (5) are sequentially arranged on one side of the outer side of the adhesive layer (3), a plurality of water guide holes (6) are arranged on the adhesive layer (3), an observation window (7) corresponding to the positions of the water guide holes (6) is arranged on the reinforcing layer (4), and a color indicator that changes color when meeting water is arranged in the observation window (7); the water guide holes (6) are long and spiral, and the plurality of water guide holes (6) are evenly distributed in a circumferential direction around the axis of the adhesive layer (3). The application has the advantages of being suitable for underwater use and safe use.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of ostomy base plate, and particularly relates to a water-involved special ostomy base plate with an indicating function and an ostomy system. BACKGROUND

[0002] Patients need to use ostomy bags to store human excreta after some ostomy operations, the ostomy bag is connected to the ostomy position through the ostomy base plate, the ostomy base plate is bonded to the skin, and the excreta enters the ostomy bag through the central hole of the ostomy base plate.

[0003] Ostomy personnel also have water-involved needs, such as rehabilitation hydrotherapy, swimming, hot spring soaking and the like, the existing ostomy base plate is simply bonded to the skin, has poor sealing performance, and water is easy to penetrate into the space between the ostomy base plate and the skin, but cannot be intuitively perceived by the ostomy personnel, so that the ostomy base plate is not replaced in time, water is long-term stored, the skin under the ostomy base plate is soaked for a long time and becomes white, and even ulceration and infection occur, especially the chlorine contained in the swimming pool water aggravates the irritation.

[0004] In addition, the human excreta contains gas, the gas enters the ostomy bag through the ostomy base plate, after entering the water, the ostomy bag floats and generates a certain buoyancy, the human ostomy position is pulled through the ostomy base plate, and pain is generated to the human body. SUMMARY

[0005] The application aims to provide a water-involved special ostomy base plate with an indicating function and an ostomy system.

[0006] The technical scheme of the application is a water-involved special ostomy base plate with an indicating function, comprising a first cannula, one end of the first cannula extends radially outward to form a flange, a bonding layer is arranged on the bottom surface of the flange, the bonding layer extends radially outward beyond the flange, a flexible reinforcing layer and a flexible water-proof layer are sequentially arranged on one side of the outer side of the bonding layer, a plurality of water guide holes are arranged on the bonding layer, an observation window corresponding to the position of the water guide hole is arranged on the reinforcing layer, and a water-color-changing color indicator is arranged in the observation window.

[0007] In the foregoing water-involved special ostomy base plate with an indicating function, the water guide hole is in a long strip spiral shape, the plurality of water guide holes are evenly distributed in a circumferential direction around the axis of the bonding layer, the width of the water guide hole is 0.1-0.2 mm, and the depth of the water guide hole is 0.2-0.3 mm.

[0008] In the foregoing water-involved special ostomy base plate with an indicating function, the inner ring of the reinforcing layer is fixed to the top surface of the flange, a water-absorbing gasket is arranged between the flange and the bonding layer, and the inner side end of the water guide hole extends to the space between the inner and outer rings of the water-absorbing gasket.

[0009] The water-wading ostomy system comprises a water-wading ostomy pouch and the ostomy wafer, the inner side of the upper end of the water-wading ostomy pouch is provided with a negative pressure box, the negative pressure box is provided with a second insertion tube, one end of the second insertion tube is inserted into the first insertion tube, the other end of the second insertion tube extends out of the negative pressure box and is kept in the water-wading ostomy pouch, the second insertion tube is provided with a plurality of filter holes, the outer side of the second insertion tube is provided with a water-blocking and air-permeating film covering the filter holes, the outer side of the water-wading ostomy pouch is provided with a sealed bag connected to the negative pressure box, the sealed bag is provided with a mini air pump and a battery pack connected to the mini air pump, the air inlet end of the mini air pump is connected to the negative pressure box, the air outlet pipe of the mini air pump is connected to a one-way valve, and the one-way valve is located on the sealed bag.

[0010] The water-wading ostomy system comprises a water-wading ostomy pouch and the ostomy wafer, the inner side of the upper end of the water-wading ostomy pouch is provided with a negative pressure box, the negative pressure box is provided with a second insertion tube, one end of the second insertion tube is inserted into the first insertion tube, the other end of the second insertion tube extends out of the negative pressure box and is kept in the water-wading ostomy pouch, the second insertion tube is provided with a plurality of filter holes, the outer side of the second insertion tube is provided with a water-blocking and air-permeating film covering the filter holes, the outer side of the water-wading ostomy pouch is provided with a sealed bag connected to the negative pressure box, the sealed bag is provided with a mini air pump and a battery pack connected to the mini air pump, the air inlet end of the mini air pump is connected to the negative pressure box, the air outlet pipe of the mini air pump is connected to a one-way valve, and the one-way valve is located on the sealed bag.

[0011] The water-wading ostomy system comprises a water-wading ostomy pouch and the ostomy wafer, the inner side of the upper end of the water-wading ostomy pouch is provided with a negative pressure box, the negative pressure box is provided with a second insertion tube, one end of the second insertion tube is inserted into the first insertion tube, the other end of the second insertion tube extends out of the negative pressure box and is kept in the water-wading ostomy pouch, the second insertion tube is provided with a plurality of filter holes, the outer side of the second insertion tube is provided with a water-blocking and air-permeating film covering the filter holes, the outer side of the water-wading ostomy pouch is provided with a sealed bag connected to the negative pressure box, the sealed bag is provided with a mini air pump and a battery pack connected to the mini air pump, the air inlet end of the mini air pump is connected to the negative pressure box, the air outlet pipe of the mini air pump is connected to a one-way valve, and the one-way valve is located on the sealed bag.

[0012] The water-wading ostomy system comprises a water-wading ostomy pouch and the ostomy wafer, the inner side of the upper end of the water-wading ostomy pouch is provided with a negative pressure box, the negative pressure box is provided with a second insertion tube, one end of the second insertion tube is inserted into the first insertion tube, the other end of the second insertion tube extends out of the negative pressure box and is kept in the water-wading ostomy pouch, the second insertion tube is provided with a plurality of filter holes, the outer side of the second insertion tube is provided with a water-blocking and air-permeating film covering the filter holes, the outer side of the water-wading ostomy pouch is provided with a sealed bag connected to the negative pressure box, the sealed bag is provided with a mini air pump and a battery pack connected to the mini air pump, the air inlet end of the mini air pump is connected to the negative pressure box, the air outlet pipe of the mini air pump is connected to a one-way valve, and the one-way valve is located on the sealed bag.

[0013] The water-wading ostomy system comprises a water-wading ostomy pouch and the ostomy wafer, the inner side of the upper end of the water-wading ostomy pouch is provided with a negative pressure box, the negative pressure box is provided with a second insertion tube, one end of the second insertion tube is inserted into the first insertion tube, the other end of the second insertion tube extends out of the negative pressure box and is kept in the water-wading ostomy pouch, the second insertion tube is provided with a plurality of filter holes, the outer side of the second insertion tube is provided with a water-blocking and air-permeating film covering the filter holes, the outer side of the water-wading ostomy pouch is provided with a sealed bag connected to the negative pressure box, the sealed bag is provided with a mini air pump and a battery pack connected to the mini air pump, the air inlet end of the mini air pump is connected to the negative pressure box, the air outlet pipe of the mini air pump is connected to a one-way valve, and the one-way valve is located on the sealed bag.

[0014] The water-wading ostomy system comprises a water-wading ostomy pouch and the ostomy wafer, the inner side of the upper end of the water-wading ostomy pouch is provided with a negative pressure box, the negative pressure box is provided with a second insertion tube, one end of the second insertion tube is inserted into the first insertion tube, the other end of the second insertion tube extends out of the negative pressure box and is kept in the water-wading ostomy pouch, the second insertion tube is provided with a plurality of filter holes, the outer side of the second insertion tube is provided with a water-blocking and air-permeating film covering the filter holes, the outer side of the water-wading ostomy pouch is provided with a sealed bag connected to the negative pressure box, the sealed bag is provided with a mini air pump and a battery pack connected to the mini air pump, the air inlet end of the mini air pump is connected to the negative pressure box, the air outlet pipe of the mini air pump is connected to a one-way valve, and the one-way valve is located on the sealed bag.

[0015] The water-wading ostomy system comprises a water-wading ostomy pouch and the ostomy wafer, the inner side of the upper end of the water-wading ostomy pouch is provided with a negative pressure box, the negative pressure box is provided with a second insertion tube, one end of the second insertion tube is inserted into the first insertion tube, the other end of the second insertion tube extends out of the negative pressure box and is kept in the water-wading ostomy pouch, the second insertion tube is provided with a plurality of filter holes, the outer side of the second insertion tube is provided with a water-blocking and air-permeating film covering the filter holes, the outer side of the water-wading ostomy pouch is provided with a sealed bag connected to the negative pressure box, the sealed bag is provided with a mini air pump and a battery pack connected to the mini air pump, the air inlet end of the mini air pump is connected to the negative pressure box, the air outlet pipe of the mini air pump is connected to a one-way valve, and the one-way valve is located on the sealed bag.

[0016] Compared with the prior art, the ostomy bottom disc of the present application has a three-layer structure, the adhesive layer is used for fixing the ostomy bottom disc to the human skin, the flexible reinforcing layer is selected to make the ostomy bottom disc have a certain strength, and the ostomy bottom disc can better adapt to the curved surface of the human skin, so that the bonding strength between the ostomy bottom disc and the skin is higher, the ostomy bottom disc is not easy to fall off, a gap is not easy to be generated, water is not easy to enter, even if a certain gap is generated between the edge of the ostomy bottom disc and the skin under the action of the limb movement, the sealing ring close to the outer edge of the ostomy bottom disc expands, a secondary sealing can be formed, water continues to penetrate inwards is prevented, the sealing property is good, and thus the ostomy bottom disc is suitable for underwater use. By arranging the observation window on the reinforcing layer, the color indicator is arranged in the observation window, when water enters the ostomy bottom disc, the color indicator changes color, the user is prompted, the user can be treated in time, the peristomal area is prevented from being soaked for a long time, even if the color indicator is not noticed by the user within a certain time, the water entering the inside of the ostomy bottom disc also moves inwards under the capillary action of the water guide hole and enters the water absorption gasket, the inside of the ostomy bottom disc can be kept dry for a very long time, and sufficient time is reserved for the user to replace the ostomy bottom disc.

[0017] In the ostomy system of the present application, the connection between the ostomy bag and the ostomy bottom disc is convenient, the replacement of the ostomy bag is convenient, the connection between the ostomy bag and the ostomy bottom disc is reliable, the ostomy bag will not be accidentally detached during use, water is prevented from entering the window from the cannula, and the use is safe. By arranging the detachable sealing bag on one side of the ostomy bag, the electrically driven mini air pump is arranged in the sealing bag, the ostomy bag and the sealing bag are simultaneously evacuated by the sealing air pump, the floating of the ostomy bag after entering water is avoided, the wound is prevented from being pulled, the pain of the human body is reduced, and the safety of use is further improved.

[0018] In summary, the present application has the advantages of being suitable for underwater use and safe to use. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a front view half-section structure schematic diagram of example 1.

[0020] Figure 2 is a bottom view schematic diagram of the adhesive layer.

[0021] Figure 3 is a top view schematic diagram of the reinforcing layer.

[0022] Figure 4 is a structure schematic diagram of example 2.

[0023] Figure 5 is Figure 4 is an enlarged view at A.

[0024] Figure 6 is an internal structure schematic diagram of the sealing bag.

[0025] The marks in the drawings are: 1-first cannula, 2-flange, 3-adhesive layer, 4-strengthening layer, 5-waterproof layer, 6-water guide hole, 7-observation window, 8-water absorption gasket, 9-groove, 10-negative pressure box, 11-second cannula, 12-sealing ring, 13-stoma bag, 14-filter hole, 15-waterproof and air-permeable membrane, 16-sealing bag, 17-mini air pump, 18-battery pack, 19-one-way valve, 20-O-ring, 21-annular groove, 22-nut, 23-elastic sheet, 24-external thread, 25-protrusion, 26-limiting baffle, 27-tube joint, 28-hose, 29-air hole, 30-counterweight, 31-filtering particles, 32-push button switch. DETAILED DESCRIPTION

[0026] The application will be further described below in conjunction with the drawings and examples, but not as the basis for limiting the application.

[0027] Example 1: a special stoma base for wading with indication function, as shown in the figure, comprising a first cannula 1, one end of the first cannula 1 extends radially outward to form a flange 2, and the first cannula 1 and the flange 2 are formed on one part by injection molding. Figure 1

[0028] The bottom surface of the flange 2 is provided with an adhesive layer 3, the material of the adhesive layer 3 is selected from acrylic pressure-sensitive adhesive or rubber pressure-sensitive adhesive, and the adhesive layer 3 has a skin-friendly and moisturizing effect. The adhesive layer 3 extends radially outward beyond the flange 2, and the outer side of the adhesive layer 3 is sequentially provided with a strengthening layer 4 and a waterproof layer 5. The strengthening layer 4 is cut from a PE plate with a thickness of 0.5-0.8 mm, which has both strength and flexibility. The waterproof layer 5 is a transparent plastic film. The outer diameter of the strengthening layer 4 is about 10 cm.

[0029] The adhesive layer 3 is provided with a plurality of long strip spiral water guide holes 6, which are preferably through holes, i.e. the hole depth of the water guide hole 6 is determined by the thickness of the adhesive layer 3. The plurality of water guide holes 6 are evenly distributed around the axis of the adhesive layer 3. The width of the water guide hole 6 is 0.1-0.2 mm, the depth of the water guide hole 6 is 0.2-0.3 mm, and the slender structure of the water guide hole 6 basically does not reduce the adhesive area and the adhesive strength of the adhesive layer 3. The strengthening layer 4 is provided with an observation window 7 corresponding to the position of the water guide hole 6, and the observation window 7 is provided with a water-color-changing color indicator. The color indicator can be loaded on some medium, such as test paper. All the observation windows 7 must be covered by the waterproof layer 5.

[0030] The inner circle of the strengthening layer 4 is fixed with the top surface of the flange 2, and the adhesive layer 3 is provided with a water absorption gasket 8 between the flange 2. The material of the water absorption gasket 8 can be selected from water absorption resin pressed into a sheet. The inner diameter of the water absorption gasket 8 should be greater than the inner diameter of the first cannula 1, and the inner side end of the water guide hole 6 extends between the inner and outer circles of the water absorption gasket 8.

[0031] ​The adhesive layer 3 is provided with an annular groove 9, the bottom surface of the groove 9 can extend to the reinforcing layer 4, the groove 9 is close to the outer edge of the adhesive layer 3, the groove 9 is provided with a water-swelling sealing ring 12, the outer side end of the water guide hole 6 extends to the groove 9, and the material of the sealing ring 12 can be selected from a water-absorbing resin pressed into a sheet.

[0032] Working principle of the stoma disc: the stoma is aligned with the first cannula 1, and the excrement of the stoma is discharged through the first cannula 1; the stoma disc is adhered to the skin through the adhesive layer 3. After entering the water, the water-proof layer 5 prevents the water from moving axially into the inside of the stoma disc, and the adhesive layer 3 plays a sealing role to prevent the water from entering the inside of the stoma disc radially.

[0033] When moving in water, the repeated bending and folding of the skin can cause the outer edge of the adhesive layer 3 to be locally separated from the skin, and the water enters along the gap to contact the sealing ring 12 in the groove 9, and the sealing ring 12 swells when it comes into contact with water, filling the gap and preventing continuous water entry, thereby prolonging the drying time inside the stoma disc. In the case of prolonged water entry, the stoma disc is further separated from the skin, and water may continue to penetrate inward beyond the interception of the sealing ring 12. Due to the elongated water guide hole 6, a capillary effect is generated, and the water moves inward along the water guide hole 6 and is absorbed in the water-absorbing gasket 8, thereby preventing the water from spreading along the plane of the adhesive layer 3 and reducing the water contact area of the skin covered by the stoma disc. The spiral water guide hole 6 has a large interception range for water, and the water moving in the spiral water guide hole 6 also has a certain spiral centripetal effect, which increases the drainage speed and has a certain effect on reducing the water content inside the stoma disc.

[0034] When the water continues to move inward beyond the sealing ring 12, it will come into contact with the color indicator in the observation window 7, and the color indicator will change color, giving a signal to remind the user to get out of the water and replace the new stoma disc.

[0035] Embodiment 2: A special stoma system for wading, comprising a waterproof stoma bag 13 and the stoma disc in embodiment 1.

[0036] The inner side of the upper end of the stoma bag 13 is provided with a negative pressure box 10, the negative pressure box 10 is provided with a second cannula 11, one end of the second cannula 11 is connected with the first cannula 1, the other end of the second cannula 11 is bent and extends downward out of the negative pressure box 10 and remains in the stoma bag 13, the second cannula 11 is provided with a plurality of filter holes 14 located in the negative pressure box 10, the outer side of the second cannula 11 is provided with a water-blocking and air-permeable film 15 covering the filter holes 14, the outer side of the stoma bag 13 is provided with a sealed bag 16 (plastic bag) connected with the negative pressure box 10, the sealed bag 16 is provided with a mini air pump 17 and a battery pack 18 connected with the mini air pump 17, the air inlet end of the mini air pump 17 is connected with the negative pressure box 10, the air outlet pipe of the mini air pump 17 is connected with a one-way valve 19, and the one-way valve 19 is located on the sealed bag 16.

[0037] Mini air pump 17 is selected 3V, 0.2A specification, battery pack 18 is two voltage 1.5V 18650 battery in series, mini air pump 17 continuous working time can be 6-8 hours, battery pack 18 through the button switch 32 connects mini air pump 17.

[0038] The second cannula 11 is located inside the first cannula 1, the front end of the second cannula 11 is provided with an O-shaped ring 20 matched with the first cannula 1, the rear end of the second cannula 11 is provided with an annular groove 21, the outside of the first cannula 1 is provided with a nut 22, the end of the first cannula 1 is provided with a plurality of outwardly opening elastic sheets 23, the outside of the elastic sheet 23 is provided with an external thread 24 matched with the nut 22, the inside of the elastic sheet 23 is provided with a protrusion 25 matched with the annular groove 21, the front end of the elastic sheet 23 is provided with a limiting baffle 26 extending radially outwardly, the first cannula 1, the elastic sheet 23, the protrusion 25 and the limiting baffle 26 are injection molded on the same part. When the nut 22 is rotated to the outside of the elastic sheet 23 and contacts the limiting baffle 26, the protrusion 25 enters the annular groove 21 and is not pressed tightly.

[0039] The negative pressure box 10 is provided with a pipe joint 27 extending out of the stoma bag 13, the air inlet end of the mini air pump 17 is provided with a soft tube 28 extending out of the sealing bag 16 and connected with the pipe joint 27, and the sidewall of the soft tube 28 is provided with an air hole 29 opening into the sealing bag 16.

[0040] The sealing bag 16 is connected with the stoma bag 13 by touch fastening, the sealing bag 16 is connected to the lower part of the stoma bag 13, and the sealing bag 16 is provided with a counterweight 30. The counterweight 30 ensures that the stoma bag 13 is in a sinking state in water, and the stoma bag 13 is rotatably connected with the stoma bottom disc, so that the stoma bag 13 can also be in a vertical state in water and will not be tilted to cause reverse flow of internal substances.

[0041] The negative pressure box 10 is filled with filter particles 31, and the filter particles 31 can be activated carbon to absorb the odor of stoma exhaust.

[0042] The use method of the stoma system is as follows: after the stoma bag 13 is squeezed and emptied, the second cannula 11 is inserted into the first cannula 1, the O-shaped ring plays a sealing role and makes the second cannula 11 and the first cannula 1 have damping property when relatively rotating. The nut 22 is screwed to the limiting baffle 26, the elastic sheet 23 is rotated inwardly, the protrusion 25 enters the annular groove 21, rigid axial limiting is established, and the second cannula 11 is prevented from being axially separated from the first cannula 1.

[0043] The button switch 32 makes the battery pack 18 and the mini air pump 17 electrically connected, the mini air pump 17 extracts the air in the sealed bag 16 through the air hole 29, discharges from the one-way valve 19, the sealed bag 16 shrinks, reduces the buoyancy. The mini air pump 17 makes the internal negative pressure of the negative pressure box 10 through the hose 28, the solid-liquid waste discharged from the stoma enters the stoma bag 13 through the second cannula 11, the gas discharged from the stoma enters the negative pressure box 10 through the filter hole 14 and the water-blocking air-permeable film 15, after filtering and absorbing the odor molecules, it is driven from the one-way valve 19 by the mini air pump 17. In order to avoid the reverse flow of the internal liquid of the stoma bag 13 under the negative pressure, the suction pressure of the mini air pump 17 should be relatively small, at the same time, a diaphragm type one-way valve (common structure) can be arranged at the discharge end of the second cannula 11 to prevent the reverse flow of the liquid in the bag.

[0044] When replacing the stoma bag, the hose 28 is separated from the pipe joint 27, the sealed bag 16 is separated from the stoma bag, the nut 22 is rotated, the elastic sheet 23 is opened, the second cannula 11 is pulled out, the sealed bag 16, the mini air pump 17 and the battery pack 18 form an assembly, which can be reused.

Claims

1. A wading specific ostomy base plate with indicating function, characterized in that: The application relates to a water-indicating special-purpose ostomy bottom plate, which comprises a first insertion tube (1), the one end of the first insertion tube (1) extends radially outward to form a flange (2), the bottom surface of the flange (2) is provided with an adhesive layer (3), the adhesive layer (3) extends radially outward beyond the flange (2), the outer side of the adhesive layer (3) is sequentially provided with a flexible reinforcing layer (4) and a flexible water-proof layer (5), the adhesive layer (3) is provided with a plurality of water guide holes (6), the reinforcing layer (4) is provided with observation windows (7) corresponding to the positions of the water guide holes (6), and the observation windows (7) are provided with water-contacting color indicators. The water guide holes (6) are long strip spiral shapes, and the plurality of water guide holes (6) are evenly distributed in a circumferential direction around the axis of the adhesive layer (3). The inner ring of the reinforcing layer (4) is fixed to the top surface of the flange (2), a water absorption gasket (8) is arranged between the flange (2) and the adhesive layer (3), and the inner side end of the water guide hole (6) extends between the inner and outer rings of the water absorption gasket (8). The adhesive layer (3) is provided with an annular groove (9) close to the outer edge of the adhesive layer (3), the groove (9) is provided with a water-contacting expansion sealing ring (12), and the outer side end of the water guide hole (6) extends to the groove (9).

2. The wade-only ostomy base disc with indication function according to claim 1, characterized in that: The width of the water guide hole (6) is 0.1-0.2mm, and the depth of the water guide hole (6) is 0.2-0.3mm.

3. A wading specific ostomy system characterized in that: The application further relates to a water-indicating special-purpose ostomy bottom plate, which comprises an ostomy bag (13) and the water-indicating special-purpose ostomy bottom plate according to any one of claims 1 to 2, the inner side of the upper end of the ostomy bag (13) is provided with a negative pressure box (10), the negative pressure box (10) is provided with a second insertion tube (11), one end of the second insertion tube (11) is inserted into the first insertion tube (1), the other end of the second insertion tube (11) extends out of the negative pressure box (10) and is kept in the ostomy bag (13), the second insertion tube (11) is provided with a plurality of filter holes (14), the outer side of the second insertion tube (11) is provided with a water-blocking and air-permeating film (15) covering the filter holes (14), the outer side of the ostomy bag (13) is provided with a sealed bag (16) communicating with the negative pressure box (10), the sealed bag (16) is provided with a mini air pump (17) and a battery pack (18) connected with the mini air pump (17), the air inlet end of the mini air pump (17) is connected with the negative pressure box (10), the air outlet pipe of the mini air pump (17) is connected with a one-way valve (19), and the one-way valve (19) is arranged on the sealed bag (16).

4. The wading-only ostomy system according to claim 3, characterized in that: The second insertion tube (11) is located on the inner side of the first insertion tube (1), the front end of the second insertion tube (11) is provided with an O-shaped ring (20) matched with the first insertion tube (1), the rear end of the second insertion tube (11) is provided with an annular groove (21), the outer side of the first insertion tube (1) is provided with a nut (22), the end of the first insertion tube (1) is provided with a plurality of outwardly opened elastic sheets (23), the outer side of the elastic sheet (23) is provided with an external thread (24) matched with the nut (22), the inner side of the elastic sheet (23) is provided with a protrusion (25) matched with the annular groove (21), and when the nut (22) is rotated to the outer side of the elastic sheet (23), the protrusion (25) enters the annular groove (21).

5. The wading-only ostomy system according to claim 4, characterized in that: The front end of the elastic sheet (23) is provided with a limiting baffle (26) extending radially outward.

6. The wading-only ostomy system of claim 3, wherein: The negative pressure box (10) is provided with a pipe joint (27) extending out of the stoma bag (13), the air inlet end of the mini air pump (17) is provided with a hose (28) extending out of the sealing bag (16) and connected with the pipe joint (27), and the sidewall of the hose (28) is provided with an air hole (29) in the sealing bag (16).

7. The wading-only ostomy system according to claim 6, characterized in that: The sealing bag (16) is connected with the stoma bag (13) through a hook-and-loop fastener, the sealing bag (16) is connected to the lower part of the stoma bag (13), and the sealing bag (16) is provided with a counterweight (30).

8. The wading-only ostomy system of claim 3, wherein: The negative pressure box (10) is filled with filtering particles (31).

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