Ostomy appliance

Abstract

The present invention provides an ostomy appliance having a bag-like structure in which the intermediate sheet does not block the filter and prevents clogging of the filter by excrement and other substances. [Solution] The ostomy appliance 1 is composed of a first sheet 12 having a stoma opening 16, a second sheet 13 positioned opposite the first sheet 12 and equipped with a filter 18 for gas discharge, and an intermediate sheet 14 interposed between the first sheet 12 and the second sheet 13, and has a bag body 3 closed at the outer peripheral edges 12A, 13A, and 14A of the first sheet, second sheet, and intermediate sheet, respectively. An outlet for the discharge of excrement is provided at the lower end of the bag body 3. The intermediate sheet 14 is equipped with an upper partial joint portion 21 that is joined to the first sheet 12 in the region above the stoma opening 16, and a ventilation portion 23 that allows gas from the stoma to pass through. The ventilation portion 23 is formed in the region between the upper partial joint portion 21 and the stoma opening 16.

Description

Technical Field

[0001] This technology relates to ostomy appliances.

Background Art

[0002] When a person cannot control the excretion of feces or urine according to their own will, or when there is a disease in the digestive or urinary organs, a surgical operation may be performed to guide the intestinal or urinary tract to the body surface and an opening is created on the body surface. This opening is also called a stoma. A person with a stoma needs to wear an ostomy appliance having a bag or the like that can temporarily hold the excrement from the stoma. In the case of a person with a urinary stoma, a leg bag may be used to increase the urine storage volume. In addition, people with other diseases having an opening or wound on the body surface also need to wear a drainage management storage bag such as a drainage pouch around the opening or wound to process the excrement discharged by drainage or the like.

[0003] In such a bag, in addition to excrement such as feces, excrement such as gas containing odor can accumulate. Therefore, when discharging this gas to the outside, a filter for removing odor may be provided. Since such a filter can come into contact with excrement such as feces accumulated in the bag, techniques for suppressing clogging of the filter have been proposed.

[0004] For example, Patent Document 1 discloses an apparatus combining a filter, a rear wall (skin - contacting sheet) including an opening for a fistula, a front wall (non - skin - contacting sheet) including a port for receiving the filter, and a sac (bag) having an intermediate barrier (intermediate sheet) including small holes. The intermediate barrier is disposed between the rear wall and the front wall, and the small holes are provided at positions that do not overlap the port when viewed from the front.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] In the field of ostomy appliances, the bag is made from a highly flexible and pliable sheet. Therefore, due to the waste or gas inside the bag, the intermediate sheet can be pushed towards the non-skin-contacting sheet, potentially causing the intermediate sheet to block the filter.

[0007] Therefore, the main objective of this technology is to provide an ostomy appliance having a bag-like structure in which the intermediate sheet does not block the filter and prevents clogging of the filter by excrement and other substances. [Means for solving the problem]

[0008] This technology is The present invention provides an ostomy appliance comprising a first sheet having a stoma opening, a second sheet positioned opposite the first sheet and equipped with a filter for gas discharge, and an intermediate sheet interposed between the first and second sheets, wherein the bag is closed at the outer edges of the first sheet, the second sheet, and the intermediate sheet, and the intermediate sheet comprises an upper partial joining portion that joins to the first sheet in the region above the stoma opening, and a ventilation portion that allows gas from the stoma to pass through, the ventilation portion being formed in the region between the upper partial joining portion and the stoma opening. Furthermore, the ostomy appliance relating to this technology may have an outlet for the discharge of excrement at the lower end of the bag body, and the intermediate sheet may have a lower partial joining portion that joins to the second sheet in the area above the outlet. Furthermore, with respect to the ostomy appliance relating to this technology, the ventilation portion may be positioned opposite the filter. Furthermore, regarding the ostomy appliance related to this technology, the ventilation holes have a pore area of ​​0.19 to 45 mm² each. 2 It may consist of 4 to 60 ventilation holes. Furthermore, with respect to the ostomy appliance relating to this technology, the ventilation holes may have peripheral wall portions that protrude toward the first sheet side. Furthermore, with respect to the ostomy appliance relating to this technology, the bag body has a discharge passage on the upper side of the discharge opening that folds and houses the discharge opening, and the lower part of the joint may be provided in the discharge passage. Furthermore, with respect to the ostomy appliance relating to this technology, the lower portion of the joint may be provided at multiple locations in the drainage passage. Furthermore, with respect to the ostomy appliance relating to this technology, the bag may have a mouthpiece inserted through the outlet. [Effects of the Invention]

[0009] This technology can provide an ostomy appliance having a bag-like structure in which an intermediate barrier does not block the filter and prevents clogging of the filter by excrement and other substances. [Brief explanation of the drawing]

[0010] [Figure 1] An exploded perspective view showing the main parts of an ostomy appliance according to the first embodiment of this technology. [Figure 2] Front view of the ostomy appliance according to the first embodiment of this technology, as seen from the skin-contacting side. [Figure 3] Front view of the ostomy appliance according to the first embodiment of this technology, as seen from the non-skin side. [Figure 4] Side cross-sectional view of an ostomy appliance according to the first embodiment of this technology. [Figure 5] Front view of the ostomy appliance according to the second embodiment of this technology, as seen from the skin-contacting side. [Modes for carrying out the invention]

[0011] Hereinafter, preferred embodiments for implementing the present invention will be described with reference to the drawings. Note that the embodiments described below show examples of typical embodiments of the present invention, and the scope of the present invention is not limited thereby. Further, the present invention can arbitrarily or appropriately combine any of the technologies, embodiments, examples, and modifications described in this specification.

[0012] In the description of the following embodiments, the configuration may be described using terms with "substantially" such as substantially parallel and substantially orthogonal. For example, substantially parallel means not only being completely parallel but also being substantially parallel, that is, a state deviated by, for example, several percent (which may be "°" or "mm") from the completely parallel state (for example, a deviation within a range of 0.05, 0.1, 0.5, 1, 2, or 3% or less). The same applies to other terms with "substantially". Also, each figure is a schematic diagram and is not necessarily strictly illustrated.

[0013] Regarding the drawings, the same or equivalent elements or members are denoted by the same reference numerals, and duplicate descriptions are omitted as appropriate. Also, in the present invention, for the examples described in this specification, one or more selected from these may be used.

[0014] Also, in this specification, for the sake of convenience, descriptions may be made by attaching numbers, alphabets, etc. such as "first, second, third...", "A, B, C...", "primary, secondary, tertiary...", etc. However, the present invention is not construed as being limited in a narrow sense such as order, and the order may be arbitrarily changed. The combined product may be a combined product or a combination, and may also be a set product, a set, or a kit product, a kit.<000008*9*>

[0015] Unless otherwise specified, in the drawings, "up" means the upward direction or the upper side in the figure, and "down" means the downward direction or the lower side in the figure.

[0016] <First Embodiment> Referring to FIGS. 1 to 4, the ostomy appliance 1 according to the first embodiment of the present technology will be described. FIG. 1 is an exploded perspective view showing a main part of the ostomy appliance 1 according to the present embodiment. FIG. 2 is a front view of the ostomy appliance 1 according to the present embodiment as viewed from the skin side. FIG. 3 is a front view of the ostomy appliance 1 according to the present embodiment as viewed from the non-skin side. FIG. 4 is a side sectional view of the ostomy appliance 1 according to the present embodiment.

[0017] The ostomy appliance 1 according to the present technology is attached to a stoma (not shown; the same applies hereinafter) formed on the body surface and appropriately treats excrement discharged from the stoma. Here, the excrement may include not only solid (solid form), semi-solid (semi-solid form) or liquid (liquid form) excrement, but also gaseous (gaseous form) excrement such as gas containing odor.

[0018] As shown in FIG. 1, the ostomy appliance 1 has a bag body 3 (sometimes also referred to as a pouch or bag) for temporarily storing excrement discharged from the stoma, and an adhesive panel 4 for fixing the bag body 3 to the body (skin) such as the abdomen.

[0019] As shown in Figures 1 to 4, the bag 3 according to this technology has a storage section 6 for storing excrement, an outlet section 8 (see Figures 2 to 4) for discharging the stored excrement to the outside, and a discharge passage 7 integrally formed with the storage section 6 and guiding the excrement stored in the storage section 6 to the outlet section 8. More specifically, the upper part of the bag 3 forms the storage section 6, and the lower part of the bag 3 forms the discharge passage 7. The lower end of the bag 3 forms the outlet section 8. The outlet section 8 is a foldable or clip-type outlet. In this embodiment, the discharge port 8 is foldable, and the bag body 3 has a pair of plates 9 installed on the upper part of the discharge port 8 (the lower end side of the discharge passage 7) and a pair of engaging parts 10 for fixing the folded discharge port 8 (see Figures 2 to 4). The discharge passage 7 can be folded (rolled up) upward from the plate 9 and the pair of engaging parts 10 can be engaged with each other to close (contain) the discharge port 8. Furthermore, the bag body 3 can discharge waste from the discharge port 8 by releasing the engagement (fixing) of the pair of engaging parts 10 from the folded (rolled up) state of the discharge passage 7, opening the contained discharge passage 7, and pressing both ends of the pair of plates 9 to properly open the discharge port 8.

[0020] The bag 3 is composed of multiple sheets. Specifically, the bag 3 is composed of a first sheet 12 positioned on the skin-contacting side, a second sheet 13 positioned opposite the first sheet 12, and an intermediate sheet 14 interposed between the first sheet 12 and the second sheet 13.

[0021] Each sheet 12, 13, and 14 is preferably made of a synthetic resin material that has high tear strength, seal strength, flexibility, and excellent water resistance in order to prevent leakage of excrement and odor. Specific examples of materials for the first sheet 12, the second sheet 13, and the intermediate sheet 14 include polyolefins such as polyethylene, low-density polyethylene, high-density polyethylene, and polypropylene; olefin copolymers such as ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), ethylene-methyl acrylate copolymer (EMA), ethylene-methyl methacrylate copolymer (EMMA), ethylene-methacrylic acid polymer (EMAA), and ethylene-acrylic acid copolymer (EAA); polyvinyl chloride and polyvinylidene chloride; polyamides such as nylon 6 and nylon 66; polyesters such as polyethylene terephthalate and polybutylene terephthalate; polyvinyl alcohol; and polyurethane. These synthetic resin materials may be used individually or in mixtures of two or more types, and the layer structure of each sheet 12, 13, and 14 may be a single-layer film or a multilayer film formed by laminating multiple sheets.

[0022] The bag 3 is formed by closing off a portion of the outer edges of these sheets 12, 13, and 14. More specifically, the outer edge 12A of the first sheet 12 excluding the bottom edge, the outer edge 13A of the second sheet 13 excluding the bottom edge, and the outer edge 14A of the intermediate sheet 14 excluding the bottom edge are closed off. As a result, the interior of the bag 3 is defined by the first sheet 12 and the second sheet 13. The interior of the bag 3 also has a first chamber S1 defined by the first sheet 12 and the intermediate sheet 14, and a second chamber S2 defined by the second sheet 13 and the intermediate sheet 14 (see Figure 4).

[0023] The first sheet 12 is a sheet positioned on the skin-contacting side of the bag body 3. The upper part of the first sheet 12 forms a storage section 6 for containing excrement, and the lower part of the first sheet 12 is narrower than the width of the upper part and forms a discharge passage 7 that guides the excrement contained in the storage section 6 to the discharge opening 8. Here, width refers to the dimension of the sheet in the surface direction perpendicular to the vertical direction.

[0024] The first sheet 12 is provided with a stoma opening 16 for receiving a stoma. The stoma opening 16 is an opening that connects the first chamber S1 to the outside and guides the waste discharged from the stoma into the first chamber S1. The stoma opening 16 is located at the top of the first sheet 12. The stoma opening 16 is formed in a circular shape.

[0025] Furthermore, the first sheet 12 is provided with a first engaging portion 10A, which is one of a pair of engaging portions 10. Specifically, the first engaging portion 10A is provided at the lower part of the first sheet 12 (near the upper side of the discharge passage 7). The engaging portion 10 may be, for example, a hook fastener, and the first engaging portion 10A may be, for example, the hook side of the hook fastener.

[0026] The second sheet 13 is a sheet positioned on the non-skin side of the bag body 3. The upper part of the second sheet 13 forms a storage section 6 for containing excrement, and the lower part of the second sheet 13 is narrower than the width of the upper part of the first sheet 12 and forms a discharge passage 7 that guides the excrement contained in the storage section 6 to the discharge opening 8. The second sheet 13 is formed in the same shape as the first sheet 12, and the bag body 3 is formed by sealing the outer edges of both sheets together by heat welding (heat sealing) or the like.

[0027] The second sheet 13 is equipped with a gas discharge filter 18. More specifically, the second sheet 13 has a filter opening 19 for discharging gas from the filter 18, and the filter 18 covers the filter opening 19. The filter 18 may cover the filter opening 19 from the second chamber S2 side inside the bag 3, or from the outside of the bag 3.

[0028] The filter 18 is a component for removing odors contained in gaseous waste when gaseous waste is discharged to the outside through the filter opening 19. The configuration of the filter 18 is not particularly limited, but for example it may include a deodorizing layer, a breathable waterproof layer covering one side surface of the deodorizing layer, a porous material layer covering one side surface of the breathable waterproof layer, and a cover layer covering one side surface of the porous material layer and having through holes.

[0029] The filter opening 19 connects the second chamber S2 to the outside and discharges gaseous waste such as gas accumulated inside the bag 3 to the outside. When viewed from the front, the filter opening 19 is located above the center of the stoma opening 16. That is, if the line in the width direction of the sheet passing through the center of the stoma opening 16 is taken as the first imaginary line A, the filter opening 19 is located above this first imaginary line A (see Figure 3).

[0030] The filter opening 19 is not particularly limited as long as it connects the second chamber S2 to the outside, but examples include a cross-shaped cut, a slit, or a hole. Among these, a slit or a hole is preferred. In this embodiment, the filter opening 19 is formed by three linear slits, but it may be one or more slits or holes.

[0031] Each plate 9 is attached to the front side near the lower end of the first sheet 12 and the front side near the lower end of the second sheet 13, respectively. Each plate 9 may be attached so that its lower edge is at the same position as the lower edges of the first sheet 12 and the second sheet 13, or it may be attached so that it is about 5 mm above the lower edges of the sheets. The plate 9 has a substantially rectangular shape that is long in the width direction of the sheet (the surface direction of the sheet perpendicular to the vertical direction). In the ostomy appliance 1 according to the first embodiment, the plate 9 is provided on the front side (outside of the bag body 3) of the lowest end of the first sheet 12 and the second sheet 13, respectively, so as to be along the lower edges of the first sheet 12 and the second sheet 13. Preferably, the plate 9 is made of an elastic material such as polyethylene, polypropylene, or nylon.

[0032] The plate 9 may be attached to only one of the sheets, either the first sheet 12 or the second sheet 13. Alternatively, the two plates 9 may be attached vertically to the lower ends of the non-skinned sides of the first sheet 12 and the second sheet 13, forming an outlet 8 between the two plates 9.

[0033] Furthermore, the lower front surfaces of the first sheet 12 and the second sheet 13 are provided with multiple fold lines 20 that extend in the width direction of the sheet and are spaced apart in the vertical direction. The spacing of the fold lines 20 is approximately the same as the vertical dimension of the plate 9.

[0034] The second sheet 13 is provided with a second engaging portion 10B, which is the other of the pair of engaging portions 10. Specifically, the second engaging portion 10B is provided near the lower part of the housing portion 6 on the second sheet 13 (above the uppermost fold line 20). The second engaging portion 10B is, for example, a loop surface.

[0035] The upper part of the intermediate sheet 14 is positioned between the upper part of the first sheet 12 and the upper part of the second sheet 13. The lower part of the intermediate sheet 14 is positioned between the lower part of the first sheet 12 and the lower part of the second sheet 13. The width of the lower part of the intermediate sheet 14 is narrower than the width of the upper part of the intermediate sheet 14. The vertical dimension of the intermediate sheet 14 is equal to or smaller than the vertical dimension of the first sheet 12 and the second sheet 13. In the first embodiment, the lower end of the intermediate sheet 14 may extend to the discharge passage 7 when viewed from the front. That is, the lower end of the intermediate sheet 14 may be positioned above the lower end of the first sheet 12 and the lower end of the second sheet 13 when viewed from the front. More specifically, the lower end of the intermediate sheet 14 may be positioned above the upper edge of the plate 9 when viewed from the front. Also, the lower end of the intermediate sheet 14 may be positioned below the lower of the pair of engaging parts 10, the first engaging part 10A, when viewed from the front. By positioning the lower end of the intermediate sheet 14 in this manner, when the plate 9 is folded (rolled up) and the folded discharge port 8 is fixed with the pair of engaging parts 10, the lower end of the intermediate sheet 14 is also folded together with the discharge port 8 and the plate 9, thereby preventing waste from flowing into the second chamber S2 from the lower end of the intermediate sheet 14.

[0036] The intermediate sheet 14 has an upper partial joining portion 21 that joins to the first sheet 12 in the region above the stoma opening 16, a lower partial joining portion 22 that joins to the second sheet 13 in the region above the outlet portion 8, and a ventilation portion 23 that allows gas from the stoma to pass through.

[0037] The upper partial joint portion 21 may be provided at one or more locations on the intermediate sheet 14. In this embodiment, one upper partial joint portion 21 is provided. The upper partial joint portion 21 is a portion different from the upper edge portion (part of the outer peripheral edge 14A) of the intermediate sheet 14 that is closed. The upper partial joint portion 21 is provided below the upper edge portion (part of the outer peripheral edge 14A) of the intermediate sheet 14. Also, a portion of the upper partial joint portion 21 overlaps the filter 18 when viewed from the front. The upper partial joint portion 21 is joined to the first sheet 12 by heat welding (thermal welding), adhesive, adhesive, double-sided tape, or other joining methods.

[0038] The lower portion joints 22 may be provided at one or more locations on the intermediate sheet 14. In this embodiment, three lower portion joints 22 are provided spaced apart in the width direction of the sheet. Each lower portion joint 22 is joined to the lower part of the second sheet 13 that forms the discharge passage 7 in the area above the discharge port 8. Preferably, each lower portion joint 22 is provided near the lower end of the intermediate sheet 14, more specifically, below the first engaging portion 10A, which is lower than the pair of engaging portions 10, when viewed from the front. More preferably, each lower portion joint 22 is provided between the upper edge of the plate 9 and the lower edge of the first engaging portion 10A when viewed from the front. Each lower portion joint 22 is joined to the second sheet 13 by heat welding, adhesive, adhesive, double-sided tape, or other joining methods. By positioning the lower joint portion 22 in this manner, when the plate 9 is folded (rolled up) and the folded discharge port portion 8 is fixed with the pair of engaging portions 10, the lower end of the intermediate sheet 14 is also folded together with the discharge port portion 8 and the plate 9, thereby preventing waste from flowing into the second chamber S2 from the lower end of the intermediate sheet 14.

[0039] The lower joint portion 22 may be provided so as to overlap with the plate 9 when viewed from the front.

[0040] The ventilation section 23 connects the first chamber S1 and the second chamber S2. When viewed from the front, the ventilation section 23 is formed in the upper part of the intermediate sheet 14, in the region between the upper partial joint 21 and the stoma opening 16. In other words, when viewed from the front, the ventilation section 23 is located below the upper partial joint 21 and above the stoma opening 16. More specifically, if the line in the width direction of the sheet passing through the upper end of the upper partial joint 21 is taken as the second imaginary line B, then when viewed from the front, the ventilation section 23 is located below the second imaginary line B and above the first imaginary line A.

[0041] The ventilation section 23 is not particularly limited as long as it connects the first chamber S1 and the second chamber S2, but examples include a cross-shaped cut, a slit, or a hole. Among these, a slit or a hole is preferred.

[0042] In this embodiment, the ventilation section 23 is a plurality of ventilation holes 24. The number of ventilation holes 24 may be two or more, preferably three or more, and more preferably four or more. Also, the number of ventilation holes 24 may be 80 or less, preferably 70 or less, and more preferably 60 or less.

[0043] A portion of the ventilation section 23 is positioned opposite the filter 18 when viewed from the front. That is, a portion of the multiple ventilation holes 24 is provided in the area of ​​the upper part of the intermediate sheet 14 that overlaps with the filter 18 when viewed from the front.

[0044] Each ventilation hole 24 has a peripheral wall portion 25 that protrudes toward the first sheet 12 (see Figure 4). The peripheral wall portion 25 is formed integrally with the intermediate sheet 14. Examples of the shape of the peripheral wall portion 25 include cylindrical, funnel-shaped, and tapered shapes. The peripheral wall portion 25 is formed together with the ventilation hole 24, for example, by piercing.

[0045] Regarding the area of ​​each ventilation hole 24 (hole area), the area viewed from the front on the second sheet 13 side (hole area on the base end side) is, for example, 0.29 mm². 2 The above is acceptable, preferably 0.24 mm 2 The above is acceptable, and more preferably 0.19 mm 2 The above is acceptable. Also, the area viewed from the front from the second sheet 13 side is, for example, 55 mm. 2 The following may be included, preferably 50 mm 2 The following may be, and more preferably, 45 mm 2 The following is acceptable:

[0046] Regarding the area of ​​each ventilation hole 24, it is preferable that the area viewed from the front on the first sheet 12 side (the hole area at the tip) is less than or equal to the area viewed from the front on the second sheet 13 side.

[0047] With the ostomy appliance 1 configured as described above, it is necessary to close the outlet 8 in order to contain the waste discharged from the stoma into the bag 3. Specifically, first, the user folds (rolls up) the discharge passage 7 (the lower part of the first sheet 12 and the lower part of the second sheet 13) upwards multiple times. In this state, the user engages the first engaging part 10A with the second engaging part 10B. As a result, the outlet 8 is contained within the discharge passage 7, and the outlet 8 is closed. At this time, the user can easily see the folding position by the fold line 20.

[0048] By housing and closing the outlet 8 within the discharge passage 7, the waste discharged from the stoma is contained within the storage section 6. To discharge the waste (solid, semi-solid, or liquid) contained within the storage section 6, it is necessary to open the outlet 8. Specifically, the user first releases the engagement between the first engaging section 10A and the second engaging section 10B. Next, the user unfolds the discharge passage 7. Then, the user pushes both ends of each plate 9 towards the center. These actions open the outlet 8, and the waste contained within passes through the discharge passage 7 and is discharged to the outside through the outlet 8. Each plate 9 allows the user to easily open the outlet 8.

[0049] The waste discharged from the stoma is contained in the first chamber S1. At this time, the waste pushes the intermediate sheet 14 toward the second sheet 13, causing the intermediate sheet 14 to approach and adhere to the filter 18 provided on the second sheet 13, or to block the surface of the filter 18. In particular, when there is a change in the state of waste accumulation, such as during sleep, the pushing force of the waste acts more strongly on the intermediate sheet 14. Since the intermediate sheet 14 is joined to the first sheet 12 by the upper partial joint 21, even when such pushing acts, at least the portion of the intermediate sheet 14 facing the filter 18 is less likely to come into contact with the second sheet 13. In other words, it is possible to prevent the intermediate sheet 14 from blocking the filter 18.

[0050] Of the waste, gaseous waste, such as odor-containing gases, flows from the first chamber S1 to the second chamber S2 through the ventilation section 23 of the intermediate sheet 14, and is then discharged to the outside through the filter 18. By setting the number and area of ​​the ventilation holes 24 to the values ​​described above, gaseous waste flows relatively quickly from the first chamber S1 to the second chamber S2. This suppresses excessive expansion in the first chamber S1. In addition, since a part of the ventilation section 23 is positioned opposite the filter 18 when viewed from the front, gaseous waste is discharged to the outside relatively quickly. This suppresses excessive expansion of the bag 3 due to gaseous waste.

[0051] If the excrement is semi-solid or liquid, the excrement contained in the first chamber S1 can easily enter the second chamber S2 through the ventilation section 23. In this case, by forming a peripheral wall portion 25 that protrudes toward the first sheet 12 side of the ventilation hole 24, it becomes more difficult for the excrement to enter the second chamber S2 through the ventilation section 23. Furthermore, by setting the area of ​​the ventilation hole 24 to the value described above, it becomes even more difficult for the excrement to enter the second chamber S2. Consequently, clogging of the filter 18 by excrement can be suppressed.

[0052] When the discharge port 8 is closed, the lower end of the intermediate sheet 14 is also folded together with the discharge port 8, thus closing the lower end of the second chamber S2. Therefore, even if excrement enters the second chamber S2, it is possible to prevent this excrement from leaking out to the outside.

[0053] Since the lower joint portion 22 is joined to the second sheet 13, when the excrement contained in the first chamber S1 is discharged, the intermediate sheet 14 is prevented from unintentionally narrowing the discharge passage 7 on the skin side. This prevents the excrement from getting in from near the discharge opening 8 and from flowing back. Furthermore, even if the excrement enters the second chamber S2, by opening the discharge opening 8, the excrement passes between the lower joint portions 22 and is discharged to the outside from the discharge opening 8. As a result, the bag 3 can be kept clean.

[0054] <Second Embodiment>

[0055] Next, with reference to Figure 5, an ostomy appliance according to the second embodiment of this technology will be described. Figure 5 is a front view of the ostomy appliance according to this embodiment, as seen from the skin-contacting side.

[0056] The ostomy appliance 100 according to this embodiment differs from the ostomy appliance 1 according to the first embodiment in that it does not have a plate, a pair of engaging parts, and a fold line, and a mouthpiece 103 is inserted through the outlet 102 of the bag body 101. The other components of the ostomy appliance 100 according to this embodiment are the same as those of the ostomy appliance 1 according to the first embodiment.

[0057] The lower end of the intermediate sheet (not shown) of the bag body 101 is located approximately 2 cm above the discharge port 102, that is, above the lower end of the first sheet 120 and the lower end of the second sheet (not shown). The lower side joint portion 220 is located in the area above the discharge port 102 and above the upper edge of the mouthpiece 103.

[0058] The gasket 103, inserted into the outlet 102 of the bag 101, has a cap 104 for closing the gasket 103 and a connecting part 105 for connecting the cap 104. The gasket 103, cap 104, and connecting part 105 can be molded from a resin material using known molding methods such as injection molding. Examples of resin materials that can be used include ultraviolet curing resin, thermoplastic elastomer resin, urethane resin, silicone resin, synthetic rubber, natural rubber, and thermoplastic resin. In this embodiment, a flexible resin is preferred from the viewpoint of adjusting the force applied by fingers, etc.

[0059] The mouthpiece 103 is formed in a cylindrical shape. The upper part of the mouthpiece 103 is bonded to the lower part of the first sheet 120 and the lower part of the second sheet (not shown). The upper end of the mouthpiece 103 is located 5 to 10 mm below the lower end of the intermediate sheet.

[0060] To close the outlet 102, the user can simply plug it with the cap 104 of the spout 103. To open the outlet 102, the user can simply remove the cap 104 of the spout 103.

[0061] As described above, even if the structure of the discharge port portion 102 of the bag body 101 differs from the structure of the first embodiment, the same effects as in the first embodiment can be obtained. [Examples]

[0062] The effects of the present invention will be specifically described below with reference to examples. However, the scope of the present invention is not limited to these examples.

[0063] <Evaluation of the degree of filter blockage by the intermediate sheet> The degree to which the filter was blocked by the intermediate sheet was evaluated when the number or position of the upper joint sections was changed.

[0064] Four bag samples were manufactured, each with a different number or position of upper joint sections. Each bag sample was a sample of the first embodiment. The ventilation section of each bag sample consisted of a cross-shaped cut measuring 1 cm vertically (up and down) and 1 cm horizontally (width of the sheet). In the bag sample of Test Example 1, one joint was provided on the upper side, in a front view, in the area above the stoma opening, above the ventilation section, and overlapping the filter. In the upper portion of the bag sample in Test Example 2, when viewed from the front, one joint was provided in the area above the stoma opening, above the ventilation section, and on both sides of the filter. In the bag sample of Test Example 3, one upper partial joint was provided in a location above the stoma opening and below the filter when viewed from the front. In this case, a portion of the upper partial joint forms part of the ventilation section (part of the section defining the cross-shaped cut). In the upper portion of the bag sample in Test Example 4, one joint was provided at a position, when viewed from the front, that was half the vertical dimension of the first sheet from the lower edge of the first sheet. This position is in the area below the stoma opening.

[0065] For each test case, the outlet was closed and the inside was filled with air. After filling, the stoma opening was closed. At this time, it was visually confirmed whether the intermediate sheet was obstructing the filter in each test case. A state where the intermediate sheet was not clearly obstructing the filter was classified as "Excellent," a state where a part of the intermediate sheet was in contact with the filter but the obstructed filter area was less than half was classified as "Acceptable," and a state where the intermediate sheet was clearly obstructing the filter was classified as "Unacceptable." The results are shown in Table 1.

[0066] [Table 1]

[0067] The results in Table 1 show that by providing the upper partial joint in the region above the stoma opening, blockage of the filter by the intermediate sheet is suppressed. Furthermore, it was found that blockage of the filter by the intermediate sheet is suppressed even if the upper partial joint is provided in one or more locations in the region above the stoma opening.

[0068] <Evaluation of ventilation areas> We evaluated the likelihood of fecal leakage when the shape and number of ventilation openings were changed.

[0069] Five modified bag samples with different shapes and numbers of ventilation openings were manufactured. Each bag sample was a sample of the first embodiment. The ventilation area of ​​the bag sample in Comparative Example 1 was a cross-shaped cut measuring 1 cm vertically and 1 cm horizontally. The ventilation section of the bag sample in Example 1 consisted of multiple ventilation holes. The diameter of each ventilation hole was 1 mm. The number of ventilation holes was set so that the total area of ​​the ventilation holes was approximately the same as the area of ​​the ventilation section in Comparative Example 1 (within 90-100% of the area of ​​the ventilation section in Comparative Example 1). The ventilation section of the bag sample in Example 2 consisted of multiple ventilation holes. The diameter of each ventilation hole was set to 2 mm. The number of ventilation holes was set so that the total area of ​​the ventilation holes was approximately the same as the area of ​​the ventilation section in Comparative Example 1 (within 90-100% of the area of ​​the ventilation section in Comparative Example 1). The ventilation section of the bag sample in Example 3 consisted of multiple slits. The width of each slit was 1 cm. The number of slits was set so that the total area of ​​the slits was approximately the same as the area of ​​the ventilation section in Comparative Example 1 (within 90-100% of the area of ​​the ventilation section in Comparative Example 1). The ventilation section of the bag sample in Example 4 consisted of multiple slits. The width of each slit was 0.5 cm. The number of slits was set so that the total area of ​​the slits was approximately the same as the area of ​​the ventilation section in Comparative Example 1 (within 90-100% of the area of ​​the ventilation section in Comparative Example 1).

[0070] For Comparative Example 1 and each of the bag samples in each example, 20g of simulated stool was placed inside with the outlet closed. After placing the simulated stool, the stoma opening was closed. In this state, each bag sample was placed on a horizontal surface for 2 hours with each sheet facing up and down. After 2 hours, leakage of the simulated stool was visually checked in each bag sample.

[0071] Furthermore, Comparative Example 1, which contained simulated stool, and each of the bag samples from the respective examples were evaluated not only after being left undisturbed for 2 hours, but also under load. Specifically, Comparative Example 1, which contained simulated stool, and each of the bag samples from the respective examples were placed so that each sheet of the bag sample was facing up and down, and then a load of 2 kg was applied from above. For each bag sample at this time, leakage of simulated stool and clogging of the filter were visually checked. These results are shown in Table 2.

[0072] The simulated stool described above was evaluated separately for those with normal stool consistency and those with watery stool consistency. A simulated stool with normal stool consistency is a solid stool with a water content of 75-79%. A simulated stool with watery stool consistency is a liquid or semi-solid stool with a water content of 80-90%.

[0073] Regarding the evaluation of simulated stool leakage, results in no simulated stool leakage were classified as "Excellent," results in slight simulated stool leakage were classified as "Acceptable," and results in clear simulated stool leakage were classified as "Unacceptable."

[0074] Filter clogging was evaluated by visually inspecting the filter and assessing the degree to which the simulated stool pigment occupied a portion of the filter's surface area. A result of no simulated stool pigment being detected on the filter was rated "Excellent," a result of the simulated stool pigment occupying less than 30% of the filter's surface area was rated "Acceptable," and a result of the simulated stool pigment occupying 30% or more of the filter's surface area was rated "Unacceptable."

[0075] [Table 2]

[0076] The results in Table 2 show that the ventilation portion may be either a ventilation hole or a slit.

[0077] The embodiments of this technology have been described in detail above, but this technology is not limited to the embodiments described above, and various modifications are possible based on the technical concept of this technology. In the embodiments described above, the bag body of the ostomy appliance was described, but various embodiments based on the technical concept of this technology are possible for excrement collection devices such as drainage bags (drainage pouches), defecation bags, urine collection bags, urine collection bags, and leg bags.

[0078] In this specification, numerical ranges indicated using "~" represent a range that includes the numbers before and after "~" as the minimum and maximum values, respectively. In numerical ranges described stepwise in this specification, the upper or lower limit of a numerical range at one step may be replaced with the upper or lower limit of a numerical range at another step. [Explanation of symbols]

[0079] 1. 100: Ostomy appliance 3, 101: Bag body 7: Discharge passage 8, 102: Discharge port 12, 120: Sheet 1 12A: Outer edge of the first sheet 13: Second seat 13A: Outer edge of the second sheet 14: Intermediate sheet 14A: Outer edge of the intermediate sheet 16: Stoma opening 18: Filter 19: Opening for filter 21: Upper side partial joint 22, 220: Lower side partial joint 23: Ventilation section 24: Ventilation holes 25: Peripheral wall part 103: Mouthpiece

Claims

1. The bag is composed of a first sheet having an opening for a stoma, a second sheet positioned opposite the first sheet and equipped with a filter for gas discharge, and an intermediate sheet interposed between the first and second sheets, with the outer edges of the first sheet, second sheet, and intermediate sheet being closed. The intermediate sheet comprises an upper partial joining portion that joins to the first sheet in the region above the stoma opening, and a ventilation portion that allows gas from the stoma to pass through. An ostomy appliance in which the ventilation portion is formed in the region between the upper partial joint and the stoma opening.

2. The lower end of the bag body is provided with an outlet for discharging excrement. The ostomy appliance according to claim 1, wherein the intermediate sheet has a lower partial joining portion that joins to the second sheet in the region above the outlet portion.

3. The ostomy appliance according to claim 1, wherein the ventilation portion is arranged opposite the filter.

4. Each of the aforementioned ventilation openings has a pore area of ​​0.19 to 45 mm². ２ The ostomy appliance according to claim 1, comprising 4 to 60 ventilation holes.

5. The ostomy appliance according to claim 4, wherein the ventilation hole has a peripheral wall portion that protrudes toward the first sheet side.

6. The bag has a discharge passage above the discharge opening that folds and houses the discharge opening. The ostomy appliance according to claim 2, wherein the lower portion joint is provided in the discharge passage.

7. The ostomy appliance according to claim 6, wherein the lower portion joint is provided at multiple locations in the discharge passage.

8. The ostomy appliance according to claim 2, wherein the bag has a mouthpiece inserted through the outlet.

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