COLLECTION BAG FOR GASES, LIQUIDS AND/OR SOLID MATERIALS

Abstract: Collection bag for gases, liquids and/or solid materials designed with a vent for gas release. The vent has a filter (2) for purification of the gases. This filter (2) is protected from contact with liquid and solid materials by a gas permeable, liquid impermeable membrane (4). The collection bag is particularly suited for use in connection with colostomy or ileostomy.

Description: TITEL Collection bag for gases, liquids and/or solid materials. SUMMARY The patent described a collection bag for gases, liquids and/ or solid materials designed with a went with a filter for gas release. The filter is protected from contact with the even-- tua liquids or solid materials by a gas permeable, liquid im¬ permeable membrane. The collection bag is particularly suited for use in connection with colostomy or ileostomy. TECHNICAL ' AREA This invention describes a collection bag for gases, liquids . ~ : J and/or solid materials which has a went for gas release in con- nect on with a filter where the filter is protected from con-: tact with any eventual liquids or solid materials by a gas per¬ meable, liquid impermeable membrane which also divides the bag into two compartments in which the first is constructed with an inlet for the collected material as well as an outlet for the same material, and a second compartment which is, or can -be put, into contact -with -the external enviro ent via the -filter. A bag of this type can be used for many different purposes. How¬ ever, the invention is primarily intended for aise wi h OStomy patients, i.e. patients with colostomy, in hich the large intes- "tine is cut and protrudes through the abdo i nal πwall , or+rith -_ " :■ ileostomy, in which a similar surgical operation is performed ..v. with the small intestine. In the latter case the patients often have difficult problems with fluid, stinking and gas. producing excrement. TECHNICAL FOUNDATIONS Examples of the technique ' s general foundations are given in US patents 3.302.647 and 3.612.053 as well as in Swedish patents 393.527, 403.699 and 405.934 which all describe ostomy bags in general. In addition, special reference is made to Swedish patents 399.818 and 399.819, which describe a ventilation _.. system with a coal filter for use with osto y bags. As a con¬ sequence of this vent and filter, gases are released and deo- dorized. However, the capacity of these devices are relati¬ vely low and can further be diminished if liquid or solid ma¬ terial comes into contact with the ventilation system, in addition, _refern.ee is made to the German patent application DEA1 2730286 as well as to the Swedish patent application 8006502-2. DESCRIPTION OF THE INVENTION The invention herein consists of a collection bag of the type mentioned above with a ventilation system with a large degas- sing capacity and simultaneously with little risk for clogging of the ventilation system. The collection bag, according.to the invention ' s characteristics, consists of three layers of essentially equal size and shape of which the two outer layers are made of gas and liquid impermeable material while the ' . middle layer consist of a gas permeable, liquid impermeable membrane. A secure fixation of the membrane is-made if both of i:he outer layers extend somewhat beyond the edge of the inter¬ mediate layer and are melted together as well as with the inter¬ mediate layer. The -filter, preferably of disc shape with one or more holes, !.ιr -has its" inner side in contact, or can be put into contact, with the collect-ion bags interior. The other.{outer) side of the fil¬ ter is covered by a gas impermeable layer, thus forcing the gas * to leave the hole(s) radially through the filter material. The filter does not necessarily have to be attached to the col¬ lection bag before hand, but can be packed separately for later attachment. Ideally, the collection bag is designed with a mark OMPI which shows the position where such a separate filter should be attached. The mark can, for example, be a raised ridge which essentially the same form as the filter and encompas-.. ses the hole(s) in the.:collection bag ' s outer layer. There- by, attachment is simplified and the risk of filter loss is minimized. SHORT DESCRIPTION OF THE FIGURES The-invention is described in more detail below with refer.. rence to the included figures which -shows the preferred em¬ ployment form of the collection bag when intended for use as a so called ostomy bag. Figure 1 shows the collection bag from the side that is to be turned away from the patient ' s body. Figure 2 shows the same collection bag from the side that is intended to be turned towards the body. Finally, figure 3 shows schematically the different material layers separated from each other which makes up the collection bag. . THE ' PREFERRED EMPLOYMENT FROM OF THE " INVENTION Figure 3 shows an example of the collection bag, beginning :-;.: from the outside, consisting of a barrier layer (1), a filter (2), an outer layer (3), a membrane layer (4), an inner layer (5), a layer for attachment of the collection bag to the body (6), a double-sided sealing layer. (7) and a protective layer , (8). I The outer -barrier layer (1) -can consist of adhesive paper or similar material which should block the coal filler's open ings- (2a) so that the gases are forced to leave the openings side¬ ways through, the filter. If the filter is prepacked or del ivered separately, it can itself be coated on both sides with an adhesive and covered with a barrier layer (1 ) on one side and a similar, not . shown, protective layer on the other side. The protective layer can, for example, consist of sil icone coated paper. The collection bag's outer l ayer (3). is al so provided with corresponing openings (3a) surrounded by a raised ridge which is intended to mark the position for the filter (2). The ridge also minimizes the risk that the filter shoul d come lose by mistake. The outer l ayer (3) as well as the inner l ayer (5) are made from a suitable plastic material such as PVC or PVCD, the l atter being more gas impermeabl e, however, does rust e some¬ what more. The membrane layer (4) is shown in the figures to have .basi¬ cally the same size as the oute -layer (3) and the inner lay-: er (5) respectively. However, nothing hinders that it is made somewhat smaller so that the layers (3. and ' 5) are melted to¬ gether peripherally to the membrane layer (4) to achieve the best possibl e fixation. In principle the membrane (4) can be made smaller depending on its abil ity of lettins through gases. If it is made considerably small er than both layers 3. nd 5 t . -then -the *nembrane layer (4) must be attached along its entire periphery to the 'outer l ayer (3) so that the collected liquids or eventual sol d materials can not possibly clog the openings (3a or 2a) in the outer layer (3) .or the coal filter (2). For the expert in the field, it is clear that many different gas permeable, -hydrophobic (i .e. water repellent) materials can be chosen for the membrane layer (4) , for example, silicone teflon, polypropylene or polytetraflouro ethylene. The bag's inner layer (5), i.e. the layer foreseen to be . against the body of the patient, contains an opening (5a). The corresponding openings (6a and 7a) can be found even in layer 6 and 7. These openings are intended for introduction of the ostomy.' Ideally, layers 5 and 6 are sealed together around the openings (5a and 6a) by a number of concentric washers. Thus, the hole (5a, 6a and 7a) can be widened by the patient ro adapt for the individual ostomy. Layer 6 consists of the same material as layer 5, for examp¬ le PVC or PVDC. Layer 7 is made preferably of a tape coated on both sides, from which the protective layer (8) can easily be removed. The latter layer (8) can, for example be made of silicon coated paper. Furthermore, the materials as well as the form of the collecr ' :. tion bag. can vary considerably. An example of this is the neck-like part (9) intended to mark one of the patient's re- closable disposable openings which normally are found on il ileostomy. collection bags and can be closed with a clamp or a similar device.- With col ostomy collection bags this opening „ is usually not included. In addition, it is not necessary that the frontal layer (3) contains the holes (3a) from the beginn¬ ing. These can later be made by the patient with, for example, a needle.

Claims: PATENT CLAIMS 1. A collection bag for gases, liquids and/or solid mater- ' . 1. rials containing a vent for gas release with a cleaning fil¬ ter (2) where the filter (2) is protected from the mentioned " 5 liquids or eventual solid materials by a gas permeable, li¬ quid repellent membrane (4) and by which the bag is devided into two compartments of which the first is provided with an inlet opening (5a) for the collected material as well as -.. ' with an outlet opening (9) for the same material, while the 10 other compartment is, or can be made to be, in contact with the external enviro ent via the filter (2), is c h a r a c~ teri z e d by that it consist of three layers of basically equal size and shape (3, 4, 5), of which the two outer layers are made of gas and liquid impermable material while the cen- 15 tra layer consists of a membrane (4). 2. A bag, according to claim 1, c h a r a c t e r i z e d by the fact that both the outer layers extend somewhat beyond _. the central layer and are melted together as well as with the 0 central layer (4). 3. A bag, according to claim 1, c h a ra ct e z e d by a filter (2) of disc form and contains one or several holes (2a), which on its inside is in, or can be put into, contact 5 «ith the .bag's interior, and is covered on its outside by a gas barrier layer (1), which thus forces the gases to leave the ' . * . holes (2a) through the filter material radially with respect to the holes (2a). 0 4. A " bag, according to the claims above, ' c h.a r a c t e r i z e d by a mark (3b) which shows how and where to pos tion a separate filter (2). 5. ' '-A" bag, according to claim 4, . c h a r a c t e i z e d by a mark (3b), which consists of a raised ridge, which has ba¬ sically the same form as the filter (2) and which encircOesrone or more holes (3a) in the bag ' s outer layer (3). 6. * -A bag, according to claim 1, -' c h a r a c t e r z e d by that the filter (2) is manufacturec-ias a separate unit in¬ tended for attachment to the bag first when put into use.

Inventors: RAMSTORP MATTS INGVAR, RAMSTORP, MATTS, INGVAR
Applicants: RAMSTORP MATTS INGVAR, RAMSTORP, MATTS, INGVAR
Application year: 1983
Main classification: A61F5
IPC codes: A61F5