EP0836458A1 - Sacs de collecte de selles - Google Patents

Sacs de collecte de selles

Info

Publication number
EP0836458A1
EP0836458A1 EP97908346A EP97908346A EP0836458A1 EP 0836458 A1 EP0836458 A1 EP 0836458A1 EP 97908346 A EP97908346 A EP 97908346A EP 97908346 A EP97908346 A EP 97908346A EP 0836458 A1 EP0836458 A1 EP 0836458A1
Authority
EP
European Patent Office
Prior art keywords
sheet
ostomy bag
filter
bag according
sheets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97908346A
Other languages
German (de)
English (en)
Inventor
Rory James Maxwell Smith
Paul Gocher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Welland Medical Ltd
Original Assignee
Welland Medical Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Welland Medical Ltd filed Critical Welland Medical Ltd
Publication of EP0836458A1 publication Critical patent/EP0836458A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
    • A61F5/441—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices having venting or deodorant means, e.g. filters ; having antiseptic means, e.g. bacterial barriers

Definitions

  • This invention relates to ostomy bags and in particular ileostomy bags having a flatus gas filter arrangement.
  • an ostomy bag comprising first and second sheets of a waterproof, preferably polymeric, material sealed together around their peripheral margins; the first sheet having an opening for receiving bodily waste from a stoma, the opening being surrounded by fastening means for fastening the bag to the skin of a patient about the stoma; the first or second sheets having a vent covered by a flatus filter; a third sheet being interposed between the first and second sheets and being sealed to the first sheet; the third sheet serving to divide the interior of the bag into a first waste receiving chamber in which the said opening is located, and a second chamber from which flatus gases pass to the vent, the second chamber having an area which is at least as great as the area of the first chamber; the third sheet having a perforation or plurality of perforations defining a primary filter allowing the passage of gas between the first and second chambers; wherein the primary filter and flatus filter are not superimposed, but are laterally offset as to define a lateral
  • first, second and third sheets are of the same size, the third sheet being sealed to the first sheet by means of a first seal and the first, second and third sheets being sealed together by means of a second seal which is formed outwardly of the first seal.
  • the seals are typically formed by means of welding, for example RF welding.
  • welding for example RF welding.
  • the ostomy bag is preferably a drainable ostomy bag and has a sealable drainage opening at a lower end thereof.
  • the bag is particularly suitable for use with ileostomy patients producing high volumes of essentially liquid waste.
  • the third sheet is typically sealed to the first and second sheets around substantially its entire peripheral margins, provided that when the ostomy bag is a drainable ostomy bag having a drainage opening, the third sheet need not be sealed to the first and second sheets at the drainage opening.
  • the first chamber typically has an area which is between 75% and 99% of the area of the second chamber. More usually, the area of the first chamber will be 85% to 99% of the area of the second chamber.
  • the primary filter and flatus filter are preferably both located at the upper end of the ostomy bag above the opening for receiving stomal waste.
  • upper end in the present context is meant the end of the ostomy bag which would normally be uppermost when the bag is fitted to a patient.
  • the flatus filter is preferably secured to the exterior of the bag, but preferably is concealed within a comfort layer, if such is present.
  • a hydrophobic filter may be arranged to cover the vent on the inside of the bag wall.
  • the hydrophobic filter can, for example, take the form of a hydrophobic paper filter, for example a material of the type sold by Whatman under the code Whatman F51 3-01 .
  • the perforations in the third sheet defining the primary filter can be of any shape but preferably are in the form of fibrillations.
  • the fibrillations preferably have a maximum dimension in the range 0.4mm to 5mm, preferably 1 mm to 3mm, for example approximately 2mm.
  • the perforations are not fibrillations or slits, but for example are circular or square in form, they may have a maximum dimension of up to 2mm, or preferably up to 1 mm and a minimum dimension of 0.4mm.
  • the primary filter preferably represents the only opening between the first and second chambers.
  • the lateral flow path between the primary filter and the flatus filter advantageously is at least 4cm and more preferably is at least 5cm in length.
  • Figures 1 A to 1 D are views from the rear, side, front and top respectively of a drainable ileostomy bag according to one embodiment of the invention
  • Figure 2 is an exploded view of the embodiment of Figures 1 A to 1 D.
  • Figure 3 is an exaggerated sectional elevation along the line I-I of Figure 1 A;
  • Figure 4 is an exaggerated sectional elevation along the line ll-ll of Figure 1 A.
  • the ileostomy bag comprises first and second sheets of polymeric film 2,4 sealed together around their peripheral margins 6.
  • Sheets 2 and 4 are formed from a trilaminate of ethylene vinyl acetate/polyvinylidene dichloride (PVDO/ethylene vinyl acetate (EVA).
  • PVDO/ethylene vinyl acetate (EVA) ethylene vinyl acetate/polyvinylidene dichloride
  • the EVA/PVDC/EVA film is impermeable to both liquids and gases, the PVDC layer serving as a gas barrier.
  • a suitable grade of trilaminate film is the 100 micron thick F513-01 grade supplied by Grace GmbH of Larderstedt Germany.
  • the first sheet 2 has a central opening 8 which fits about the stoma of a patient, and functions as the inlet for receiving stomal waste.
  • Surrounding the opening 8 is an adhesive flange 10 of conventional construction.
  • the adhesive flange has a backing layer 12, a hydrocolloid adhesive layer 14 and a peelable release layer 16.
  • the hydrocolloid flange is used in conventional fashion to fasten the ostomy bag to the patient's body wall.
  • a vent hole 1 8 which is covered on the exterior surface of sheet 2 by a flatus filter 20.
  • Flatus filter 20 may be of conventional design and contain an activated carbon adsorbent.
  • a suitable filtering medium is Type T9C Activated Carbon Cloth available from Carbon Cloth Ltd.
  • a comfort layer of non woven fabric 5 is secured to and overlays the first sheet 2 in conventional fashion.
  • a third sheet 22 is interposed between the first and second sheet 2,4, and is welded to the first sheet 2 and comfort layer 5 at its peripheral margins by an inner weld line 24 and to both the first and second sheets 2,4 and the comfort layer 5 by the outer weld line 25.
  • an annular weld strip 26 connects the first and third sheets 2,22 and the comfort layer 5.
  • the third sheet 22 acts to divide the interior of the ostomy bag into a first chamber 28 and a second chamber 30. Since the area within the outer weld line 25 is greater than the area within the inner weld line 24, the area of the second chamber is correspondingly larger than the area of the first chamber.
  • An opening 32 in the wall of the third sheet provides gas communication between the second chamber 30 and the vent 18.
  • Primary filter 34 comprises a plurality of fibrillations in the third sheet 22.
  • the fibrillations in this case are arranged in a circular array although this is not necessary. They could instead be arranged in a rectangular array or indeed any other convenient shape.
  • the fibrillations typically are from about 1 mm to about 3mm in length and are sufficiently large to allow free flow of gas therethrough, but act to inhibit or prevent solid and much liquid waste from passing from the first chamber 28 into the second chamber 30.
  • the first step in the process involves the welding together of the hydrocolloid adhesive flange 10, comfort layer 5 and the first sheet 2 by means of an annular weld (not shown) around the opening 8 to form a first intermediate assembly.
  • Inner weld line 24 has a short arcuate extension 24a which partially surrounds the primary filter 34, and the purpose of which will become apparent.
  • the second sheet 4 is welded to the second intermediate assembly along outer weld line 25.
  • liquid waste passes through the opening 8 into the first chamber 28.
  • the primary filter 34 As the bag fills up, or if the patient adopts a reclining position, some liquid waste may seep through the primary filter 34.
  • the flatus filter 20 is offset laterally from the primary filter, liquid passing through the primary filter 34 does not come into contact directly with the flatus filter and this reduces the chances of blockage occurring.
  • Flow of liquid from the primary filter towards the flatus filter is further inhibited by the arcuate extension 24a of the inner weld line 24 which acts as a dam and diverts the liquid in a downwards direction away from the flatus filter.
  • a further filtering action is carried out by the hydrophobic paper filter 32 thereby offering a further means of preventing blockage of the flatus filter.
  • the gas flow path through the bag is shown by means of the dotted line 36.
  • gas passes into the bag along with the other stomal waste products through opening 8, and then around the dam formed by arcuate weld line extension 24a, through primary filter 34, across the bag and out through hydrophobic paper filter 33, vent hole 32, vent hole 18 and flatus filter 20. Any noxious substances in the flatus gases are removed by adsorption on the activated carbon in the flatus filter.
  • the second chamber 30 has a greater area than the first chamber 28 and one consequence of this is that even if the bag balloons due to excessive quantities of flatus gas, the clearance between the third and second sheets 22,4 is maintained thereby keeping the gas flow path to the bag exterior open.
  • a further advantage of the arrangement shown is that if the second chamber 30 does fill with liquid, manipulation of the bag by the patient can unblock the primary filter and also the hydrophobic filter 32.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Nursing (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

L'invention concerne un sac de collecte de selles. Ce sac comprend des première et deuxième feuilles (2, 4) en matériau étanche à l'eau, assemblées ensemble, de manière étanche, sur leurs marges périphériques (6). La première feuille (2) présente une ouverture (8) prévue pour recevoir les déchets corporels provenant d'un stomate, cette ouverture étant entourée par des moyens de fixation (10) pour fixer le sac à la peau d'un patient autour du stomate. Les première et deuxième feuilles (2, 4) comportent un évent (18) recouvert par un filtre de flatuosité (20). Une troisième feuille (22) est interposée entre les première et deuxième feuilles (2, 4) et est scellée, de manière étanche, à la première feuille (2). La troisième feuille (22) permet de diviser l'intérieur du sac en une première chambre de réception des déchets (28) dans laquelle se trouve ladite ouverture (8), et en une deuxième chambre (30) d'où proviennent les gaz de flatuosité qui passent ensuite dans l'évent (18). Cette deuxième chambre (30) présente une zone qui est au moins aussi grande que celle de la première chambre (28). La troisième feuille (22) comporte une ou plusieurs perforations définissant un filtre primaire (34) permettant le passage des gaz entre les première et deuxième chambres (28, 30). Le filtre primaire (34) et le filtre de flatuosité (20) ne sont pas superposés, mais sont décalés, de manière latérale, de manière à définir une trajectoire d'écoulement latérale entre eux qui est supérieure à la largeur du filtre de flatuosité (20).
EP97908346A 1996-03-15 1997-03-14 Sacs de collecte de selles Withdrawn EP0836458A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9605438 1996-03-15
GBGB9605438.2A GB9605438D0 (en) 1996-03-15 1996-03-15 Ostomy bags
PCT/GB1997/000718 WO1997034549A1 (fr) 1996-03-15 1997-03-14 Sacs de collecte de selles

Publications (1)

Publication Number Publication Date
EP0836458A1 true EP0836458A1 (fr) 1998-04-22

Family

ID=10790421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97908346A Withdrawn EP0836458A1 (fr) 1996-03-15 1997-03-14 Sacs de collecte de selles

Country Status (3)

Country Link
EP (1) EP0836458A1 (fr)
GB (2) GB9605438D0 (fr)
WO (1) WO1997034549A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19752598C1 (de) * 1997-11-27 1999-08-26 Riesinger Auffangbeutel zum Anschluß an nicht-natürliche Körperöffnungen (Stromata) beim Menschen
GB2345853A (en) 1999-01-19 2000-07-26 Salt & Son Ltd Ostomy bag
JP3529745B2 (ja) * 2001-07-10 2004-05-24 アルケア株式会社 排泄物収容装具
DK175356B1 (da) * 2002-02-28 2004-09-06 Coloplast As Stomiindretning
GB2391175B (en) 2002-07-04 2005-12-28 Bristol Myers Squibb Co Pouch for collecting human waste
GB2426197B (en) * 2005-03-05 2009-08-19 Salts Healthcare Ltd Ostomy bag
CA3156459A1 (fr) 2019-10-04 2021-04-08 Convatec Limited Appareil de stomie
HUE062484T2 (hu) 2019-10-04 2023-11-28 Convatec Ltd Sztóma eszköz

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411659A (en) * 1982-03-16 1983-10-25 Hollister Incorporated Drainable collection pouch and filter assembly therefor
DE3237127A1 (de) * 1982-10-07 1984-04-12 Rudolf 4600 Dortmund Tebbe Beutel fuer stomatraeger zum auffangen des darminhalts
GB2139501B (en) * 1983-04-14 1987-01-28 Craig Med Prod Ltd Ostomy bag, particularly for ileostomy patients
DE3639171A1 (de) * 1986-11-15 1988-05-26 Sandler Helmut Helsa Werke Kolostomiebeutel
GB2215605B (en) * 1988-03-07 1992-01-02 Squibb & Sons Inc Ostomy bag including a filter
US5306264A (en) * 1993-01-14 1994-04-26 E. R. Squibb & Sons, Inc. Ostomy bag with multi-stage filter
US5348546A (en) * 1993-05-21 1994-09-20 Norton Walter L Ostomy bag with liquid-gas separation device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9734549A1 *

Also Published As

Publication number Publication date
GB2311014B (en) 1999-08-04
GB9705394D0 (en) 1997-04-30
GB2311014A (en) 1997-09-17
WO1997034549A1 (fr) 1997-09-25
GB9605438D0 (en) 1996-05-15

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