초록

An ostomy appliance is provided with inner and outer pouches separably joined together by peelable seams. A vent passage and deodorising filter are also provided, most advantageously located externally of the pouches, and a pre-filter is preferably positioned in advance of the deodorising filter.

대표청구항 ▼

We claim: 1. An ostomy appliance adapted to be removably attached to an ostomy patient for receiving discharge from a stoma and comprising: an inner pouch having a first aperture for receiving said stoma; said inner pouch being defined by a flexible body side or proximal inner pouch wall and a flex

We claim: 1. An ostomy appliance adapted to be removably attached to an ostomy patient for receiving discharge from a stoma and comprising: an inner pouch having a first aperture for receiving said stoma; said inner pouch being defined by a flexible body side or proximal inner pouch wall and a flexible distal inner pouch wall, and one or more peripherally extending inner pouch sealing seams; an outer pouch enclosing said inner pouch, said outer pouch having a second aperture for receiving said stoma and being aligned with said first aperture; said outer pouch being defined by a flexible body side or proximal outer pouch wall and a flexible distal outer pouch wall, and one or more peripherally extending outer pouch sealing seams; said one or more outer pouch sealing seams being manually peelable such that the attachment forces provided by said one or more peelable outer pouch sealing seams may be manually eliminated by manually pulling said distal outer pouch wall in a direction transverse to said one or more peelable outer pouch sealing seams; an adhesive face plate for securing said inner and outer pouches to the skin of said ostomy patient, said face plate comprising: a flexible plate with a body side or proximal surface and a distal surface and comprising a layer of a skin friendly adhesive material and a stoma receiving aperture for receiving said stoma; and a generally annular face plate coupling ring having an inner and an outer periphery and attached to said face plate and adapted for releasably engaging a corresponding generally annular pouch coupling ring attached to said inner and outer pouches, the face plate coupling ring being secured to said flexible plate with the plane of said face plate coupling ring generally parallel to the plane of said flexible plate and generally concentric with said aperture for receiving said stoma; one or more filters in said face plate for deodorizing flatus gas; and one or more flatus gas passages extending from the area located within said inner periphery and through said one or more filters. 2. An ostomy appliance according to claim 1, wherein said one or more flatus gas passages extend in the region between said face plate coupling ring and said flexible plate from said inner periphery to said outer periphery and through said filter. 3. An ostomy appliance according to claim 1, wherein said face plate further comprises a compartment having an exterior portion located outside said outer periphery and an interior portion located between said face plate coupling ring and said flexible plate, a flatus gas outlet being provided in a wall of said exterior portion, said compartment forming part of said flatus gas passage, said filter being located within said compartment such that said flatus gas outlet is obstructed by said filter. 4. An ostomy appliance according to claim 1, wherein said face plate further comprises a venting bag made of a film of plastic material and extending outward beyond said outer periphery, said film being provided with a flatus gas outlet aperture, said flatus gas passage extending from said inner periphery into the interior of said venting bag and through both said filter and said flatus gas outlet aperture, said filter being located entirely in said venting bag and such that substantially all said flatus gas vented through said flatus gas aperture flows through said filter. 5. An ostomy appliance according to claim 1, wherein said appliance further comprises an elongate, closed loop pre-filter attached to said inner pouch along an edge of said first aperture and extending through said second aperture in said outer pouch. 6. An ostomy appliance according to claim 5, wherein said pre-filter comprises a ring of a gas permeable porous material. 7. An ostomy appliance according to claim 5, wherein said face plate further comprises a venting bag made of a film of plastic material, said film being provided with a flatus gas outlet aperture and wherein said pre-filter is arranged in the vicinity of or adjacent to said inner periphery such that substantially all said flatus gas vented through said flatus gas outlet aperture flows through said pre-filter. 8. An ostomy appliance according to claim 5, wherein said pre filter is attached to an annular film which in turn is attached to said inner pouch along said edge of said first aperture. 9. An ostomy appliance according to claim 1, wherein said one or more outer pouch sealing scams peelably attach said distal outer pouch wall to said distal inner pouch wall and said proximal outer pouch wall to said proximal inner pouch wall. 10. An ostomy appliance according to claim 9, wherein said one or more outer pouch sealing scams peelably attach said distal outer pouch wall directly to said proximal outer pouch wall. 11. An ostomy appliance according to claim 9, wherein said inner pouch walls arc made of a plastic film laminated to a web of a non-woven fibrous material, said web facing outwards relative to the interior of said inner pouch. 12. An ostomy appliance according to claim 11, wherein said non-woven material and/or said plastic film arc biodegradable. 13. An ostomy appliance according to claim 9, wherein said proximal inner pouch wall is attached to said proximal outer pouch wall in a region surrounding said first and second apertures by means of a peelable interior sealing seam. 14. An ostomy appliance according to claim 1, wherein said inner pouch walls are impermeable to liquid and gas, and said outer pouch walls are impermeable to liquid, gas and odors. 15. An ostomy appliance according to claim 1, wherein said face plate coupling ring and said pouch coupling ring are mutually matching coupling rings adapted for releasably engaging one another. 16. An ostomy appliance adapted to be removably attached to an ostomy patient for receiving discharge from a stoma and comprising: an inner pouch having a first aperture for receiving said stoma; said inner pouch being defined by a flexible body side or proximal inner pouch wall and a flexible distal inner pouch wall, and one or more peripherally extending inner pouch sealing seams; an outer pouch enclosing said inner pouch, said outer pouch having a second aperture for receiving said stoma and being aligned with said first aperture; said outer pouch being defined by a flexible body side or proximal outer pouch wall and a flexible distal outer pouch wall, and one or more peripherally extending outer pouch sealing seams; said one or more outer pouch sealing seams being manually peelable such that the attachment forces provided by said one or more peelable outer pouch sealing seams may be manually eliminated by manually pulling said distal outer pouch wall in a direction transverse to said one or more peelable outer pouch sealing seams; an adhesive face plate for securing said inner and outer pouches to the skin of said ostomy patient, said face plate comprising: a flexible plate with a body side or proximal surface and a distal surface and comprising a layer of a skin friendly adhesive material and a stoma receiving aperture for receiving said stoma; a generally annular face plate coupling ring having an inner and an outer periphery and attached to said face plate and adapted for releasably engaging a corresponding generally annular pouch coupling ring attached to said inner and outer pouches, the face plate coupling ring being secured to said flexible plate with the plane of said face plate coupling ring generally parallel to the plane of said flexible plate and generally concentric with said aperture for receiving said stoma; one or more filters in said face plate for deodorizing flatus gas; one or more flatus gas passages extending from the area located within said inner periphery and through said one or more filters; and an elongate, closed loop pre-filter attached to said inner pouch along an edge of said first aperture and extending through said second aperture in said outer pouch, said one or more outer pouch sealing seams peelably attaching said distal outer pouch wall to said distal inner pouch wall and said proximal outer pouch wall to said proximal inner pouch wall. 17. An ostomy appliance according to claim 16, wherein said pre-filter comprises a ring of a gas permeable porous material. 18. An ostomy appliance according to claim 17, wherein said face plate further comprises a venting bag made of a film of plastic material, said film being provided with a flatus gas outlet aperture and wherein said pre-filter is arranged in the vicinity of or adjacent to said inner periphery such that substantially all said flatus gas vented through said flatus gas outlet aperture flows through said pre-filter. 19. An ostomy appliance according to claim 18 in which said porous material is resilient. 20. An ostomy appliance according to claim 19 in which said porous material comprises open cell foam. 21. An ostomy appliance according to claim 19 in which said porous material is non-woven. 22. An ostomy appliance according to claim 17 in which said porous material is resilient. 23. An ostomy appliance according to claim 22 in which said porous material comprises open cell foam. 24. An ostomy appliance according to claim 22 in which said porous material is non-woven. 25. An ostomy appliance according to claim 16, wherein said inner pouch walls are made of a plastic film laminated to a web of a non-woven fibrous material, said web facing outwards relative to the interior of said pouch. 26. An ostomy appliance according to claim 16, wherein said inner pouch walls are impermeable to liquid and gas, and said outer pouch walls are impermeable to liquid, gas and odors. 27. An ostomy appliance according to claim 16, wherein said proximal inner pouch wall is attached to said proximal outer pouch wall in a region surrounding said first and second apertures by means of a peelable interior sealing seam.