EP2787944A1 - Ensemble comprenant un pansement et une substance de remplissage de plaie - Google Patents

Ensemble comprenant un pansement et une substance de remplissage de plaie

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Publication number
EP2787944A1
EP2787944A1 EP12798721.2A EP12798721A EP2787944A1 EP 2787944 A1 EP2787944 A1 EP 2787944A1 EP 12798721 A EP12798721 A EP 12798721A EP 2787944 A1 EP2787944 A1 EP 2787944A1
Authority
EP
European Patent Office
Prior art keywords
wound care
wound
care article
set according
possibly
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Withdrawn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
EP12798721.2A
Other languages
German (de)
English (en)
Inventor
Birgit Riesinger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2787944A1 publication Critical patent/EP2787944A1/fr
Withdrawn legal-status Critical Current

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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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/01—Non-adhesive bandages or dressings
    • A61F13/01008—Non-adhesive bandages or dressings characterised by the material
    • 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/05—Bandages or dressings; Absorbent pads specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT]
    • 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/01—Non-adhesive bandages or dressings
    • A61F13/01008—Non-adhesive bandages or dressings characterised by the material
    • A61F13/01012—Non-adhesive bandages or dressings characterised by the material being made of natural material, e.g. cellulose-, protein-, collagen-based
    • 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/01—Non-adhesive bandages or dressings
    • A61F13/01034—Non-adhesive bandages or dressings characterised by a property
    • A61F13/01042—Absorbency
    • 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • A61F13/0206—Adhesive bandages or dressings with fluid retention members with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings
    • A61F13/0209—Adhesive bandages or dressings with fluid retention members with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings comprising superabsorbent material
    • 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
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive bandages or dressings
    • A61F13/0203—Adhesive bandages or dressings with fluid retention members
    • A61F13/022—Adhesive bandages or dressings with fluid retention members having more than one layer with different fluid retention characteristics

Definitions

  • the present invention relates to a wound care article set according to the preamble of claim 1.
  • wound care articles having a wound-exudate-absorbing body.
  • the latter has a substantially flat material portion of absorbent material, consisting of an absorbent fleece with superabsorber particles distributed therein.
  • These wound care articles have proven to be extremely effective in practice, as they are able to absorb exudates from great depths, thus significantly improving wound healing, especially in chronic and / or edema-related wounds.
  • wound care articles are readily suitable only for relatively shallow wounds, but not for deep wounds that have a high potential for exudates at the bottom.
  • exudate refers to a wound fluid derived from the blood plasma via the inflammatory processes of wound edema, and as the blood is responsible for the transport of nutrients and other messengers, and thus for the supply of various parts of the body, the exudate is very similar Way of supplying the Wundbettes and the healing processes occurring therein. To cope with this multitude of functions, it contains a wide range of components, resulting in a specific weight that is slightly above that of water. This is also different from the transudate, which is derived from non-inflammatory processes and has a significantly lower specific gravity with a low cell and protein content. In addition to providing nutrients to the fibroblasts and epithelial cells, the exudate coordinates the various processes of wound healing both temporally and spatially
  • growth factors and cytokines are mainly formed by platelets, keratinocytes, macrophages and fibroblasts. They influence the motility, migration and proliferation of the various cells involved in wound healing. Thus, the infiltration of cells into the wound base is promoted as well as the supply of the newly formed granulation tissue by angiogenesis.
  • the wound cleansing is also supported by the exudate. It contains several serine, cysteine and aspartate proteases as well as matrix metalloproteases, which are tightly regulated in their activity and degrade both existing and newly formed collagen in the wound.
  • Components of the physiological exudate are in particular salts, glucose, cytokines and growth factors, plasma proteins, proteases (in particular matrix metalloproteases), granulocytes and macrophages.
  • the normally healing-promoting exudate loses its positive effect in chronic wounds.
  • the content of inflammatory cytokines and proteases is significantly increased in phalloholic exudate.
  • the content of growth factors is reduced.
  • a particularly serious difference arises with regard to the activity of the previously mentioned matrix metalloproteases.
  • These enzymes are normally formed as an inactive pre-enzyme and are regulated in their activation by appropriate inhibitors (tissue inhibitors of metalloproteases, TIMPs), which at the same time have a positive effect on cell growth.
  • the object of the present invention is to provide a wound care article that is particularly suitable for the treatment of deep wounds.
  • a wound care article set comprising at least one first flat wound care article comprising hydroactive polymers. Furthermore, said set has at least one second wound care article comprising hydroactive polymers, wherein the second and optionally also further further wound care articles have a lower fluid retention and / or a lower fluid absorption capacity than the first wound care article.
  • hydroactive polymers is to be understood in the following polymers that are capable of binding large amounts of liquid.
  • said polymers are superabsorbent substances comprising polyacrylates, modified cellulose and / or alginates.
  • Fluid holding capacity and fluid retention refers to the ability of an absorbent material to hold, bind, or hold liquids. It is usually expressed in grams of liquid (eg, distilled water or 0.9% saline) per gram of absorber material. Both parameters are a function of the properties of the hydroactive polymer, its contribution to the overall product as well as the material and technical structure of the overall product. Various configurations of these parameters are conceivable:
  • Liquid uptake (g / g) over a given time window eg 15 min
  • Liquid uptake (g / g) over a given time window upon pressurization of the absorber material eg 0.3 psi
  • Methods for determining the parameters mentioned are described, for example, in US Pat. No. 4,215,692.
  • This different fluid retention or fluid absorption capacity contributes to the set of wound care articles according to the invention being able to actively acquire fluid, preferably exudates, from the wound base by means of the second and possibly further wound care articles (wound inserts) and then successively to the first wound care article (Wound dressing), which has a relatively higher fluid retention and / or fluid absorption capacity to deliver.
  • the wound base of an overhydration of the wound care article which could have adverse consequences, prevented, and yet effectively liquid, preferably exudates, discharged from the depth.
  • the first flat wound care article is a wound dressing
  • the second and optionally further wound care articles is a wound dressing.
  • the wound inserts ie the second and further wound care articles, can be divided into at least two groups with different fluid retention and / or fluid absorption capacity.
  • the liquid is then delivered to the first wound care article (wound dressing), which, as already described above, has, for the first time, the highest liquid retention and / or liquid absorption capacity.
  • the first planar wound care article is larger in area than the second and also larger than any other wound care article. In this way, the second and possibly existing further wound care articles will do a particularly good job of performing your wound care task.
  • domino-like sections also referred to as “chips” or “pellets”
  • they can be designed with or without shell.
  • Other possible embodiments take the form of tamponade-like rollers, cylinders, prisms, tetrahedrons or cuboids.
  • the second and possibly also further wound care articles are designed segmentable.
  • the second wound care article may have the same size or even larger surface area than the first wound care article.
  • Such a second or further wound care article has, for example, printed cut lines or introduced perforations, by means of which the second or further wound care articles, e.g. can be subdivided by a caregiver into smaller segments, which are then used as wound inserts.
  • the second wound care article and possibly also other wound care articles preferably have no shell.
  • the first planar wound care article has a flat medial section from the absorbent material and a liquid-permeable cover, wherein the material section also has a surface (F1) in plan view of its flat side its non-wetted state is 3% to 75% smaller than the area (F2) of the flattened shell.
  • the space between shell and material section achieved by this design is also referred to as "expansion edge”. In this way it is ensured that the material portion can increase in fluid intake in its volume and is not limited by the shell.
  • the shell in plan view of its flat side has a circumferential, projecting beyond the seam top and the absorbent body is free of hard, sharp edges and corners.
  • the wound care article has a liquid-impermeable back protection (“backsheet”) on its side facing away from the wound.
  • backsheet liquid-impermeable back protection
  • At least one of the two wound care articles, preferably the first wound care article, has a section of a fleece, preferably of an airlaid.
  • said hydroactive polymers in the first and / or the second and possibly also further wound care articles are superabsorbent polymers (SAP).
  • SAP superabsorbent polymers
  • the superabsorbent polymers in the second and possibly also further wound care articles are at least partially superabsorbent fibers (SAF).
  • superabsorbent fibers have no wicking effect in pure form, ie once taken up liquid is not actively passed along the fibers, but leads to gelation directly at the location of the take-up.
  • a wound care article wound insert
  • another wound care article which has a higher fluid retention or fluid absorption capacity
  • a retention or capacity gradient can be achieved, which ensures that the former wound care article largely delivers the absorbed fluid to the second-mentioned.
  • said fibers are in the form of a nonwoven, more preferably in admixture with other fibers (polymer fibers or cellulose).
  • superabsorbent fibers or the products containing them generally have a lower retention or capacity than, for example, cellulose nonwovens which are mixed with a granulate of superabsorbent polymers, the combination in which the former act as wound inserts, and the latter with a relative one, is particularly higher retention and / or capacity than wound dressing, particularly preferred.
  • the extraordinary softness of many superabsorbent fibers comes into play, which allows a low-pain lining of the wound base and due to the gel formation also allows an atraumatic change of the wound inserts.
  • the second and possibly also further wound care articles have an envelope-free material section having absorbent material.
  • Said fibers can be formed, for example, with other types of fibers, as a nonwoven or as a woven or knitted fabric, wherein it can be ensured that they do not leave the composite even when wetted and swollen.
  • the superabsorbent polymers are firmly immobilized in the second and possibly also further wound care articles, for example in a nonwoven matrix, wherein it is ensured that they can not detach from this matrix even on wetting and swelling.
  • the second and possibly also further wound care articles have a liquid-conducting material.
  • the Fluid transport from the wound inserts to the wound dressing, which is also supported by the different fluid retention or absorption is improved.
  • liquid-conducting fibers such as mercerized fibers, hydrophobic fibers or so-called micro fibers, such as
  • Polyester fibers such as Trevira Finesse, Diolen Soft, Fortrel Microspun, DuPont Micromattique, Primabelle and / or Shingosen,
  • Polyamide fibers such as nylon, Timbrelle, Supplex Microfiber, Tactel® Micro and / or Silky Touch,
  • acrylic fibers such as micro supreme and / or
  • first and / or the second and possibly also further wound care articles have at least one agent selected from the group consisting of
  • Hemostatic agents preferably collagen or gelatin
  • Antimicrobial agents preferably chitosan, silver or silver ions, copper or copper ions,
  • MMP matrix metalloproteases
  • Wound healing agents such as hyaluronic acid
  • a wound care device for the treatment of wounds by means of atmospheric negative pressure in the wound area, comprising:
  • At least one wound cover element At least one wound cover element
  • At least one means for generating atmospheric negative pressure which is optionally attachable to the wound covering element, as well as At least one wound care article set according to one of the preceding claims.
  • Such wound care devices are - with the exception of the wound care article set according to one of the preceding claims - known for example from the patent applications WO2006048246, WO2006056294, WO2006048240 and DE 10 2011 050 047.2 the applicant of the present application, which is the subject of negative wound pressure therapy , NWPT), which are fully referenced here.
  • an object of the invention is the use of a wound care article set or a wound care device according to any one of the preceding claims for the treatment of deep wounds.
  • At least one wound care article of the set also has an at least partially liquid-permeable cover.
  • the latter surrounds the absorption body, forms a barrier against solid precipitates forms and allows the passage of other leaked substances to an arranged within the shell material portion of absorbent material.
  • the sheath is preferably at least partially closed by a seam
  • the pores or meshes of the shell are preferably 0.05 mm to 1.0 mm, preferably 0.20 mm to 0.50 mm in size.
  • the average pore size is smaller than the average size of the particles containing hydroactive polymers.
  • the pores or meshes are delimited by the filament or fiber sections, which are approximately arcuate in section through the envelope and point outwards with their arc crests.
  • the envelope is preferably made of woven or non-woven composite synthetic fibers, such as polypropylene or polyethylene fibers, but also cotton, silk or viscose.
  • the sheath is preferably made of a fabric or nonwoven having at least a surface specific weight of 20 g / m 2 .
  • the sheath may further consist of a silicone material, for example a silicone mesh or a perforated silicone foil, or a siliconized material, preferably a grid or a perforated foil.
  • a silicone material for example a silicone mesh or a perforated silicone foil, or a siliconized material, preferably a grid or a perforated foil.
  • the shell is made of hydrophobic material, or the shell material is hydrophobic equipped.
  • the hydrophobic properties of the sheath prevent it from sticking to the wound surface and help the wound exudate particles to enter the sheath more quickly.
  • the shell has at least partially an elastic material, such as Lycra or spandex fibers. This also ensures that the material portion can increase in fluid intake in its volume and is not limited by the shell.
  • Absorbent bodies of the type mentioned are disclosed, for example, in WO03094813, WO2007051599 and WO0152780 by the assignee of the present invention.
  • the material of the sheath may be structured such that the sheath has a rough inner surface and a smooth outer surface.
  • the rough inner surface of the shell is formed by funnel-shaped perforations, each tapering towards the inner surface and terminating in a free opening edge ("protrusion"), this rough inner surface counteracting the displacements of the contents of the shell, so as to provide adhesion with adhesive dots
  • the smooth outer surface of the casing material may be formed by curved sections of material extending between the perforations
  • Such a casing material may be referred to as "three-dimensional" in contrast to a bilaterally planar one and is for example from DE 102006017194 of the Applicant the present application, the disclosure of which is fully referenced here.
  • said three-dimensional shell material is laminated to the aforementioned polypropylene nonwoven. Such a design results in improved fluid absorption properties.
  • the wound-care article has a liquid-impermeable backsheet on its side facing away from the wound Superabsorbent polymers (SAP) are plastics which are capable of multiplying their own weight - up to 1000 times - in liquids Chemically, this is a copolymer of acrylic acid (propionic acid, C 3 H 4 O 2 ) and sodium acrylate (sodium salt of acrylic acid, NaC 3 H 3 0 2 ), wherein the ratio of the two monomers may vary
  • This core crosslinker (CXL) is added to the monomer solution, which connects the long-chain polymer molecules in some places with each other by chemical bridges (“cross-linked”) it swells up the polymer particles and tightens this network at the molecular level, so that the water can not escape without help can.
  • the supernatant-absorbing polymers may be present in the wound care article of the invention in the form of a granulate, a powder, a bed, a compact, a foam, in the form of fibers, a fiber knitted, laid or nonwoven fabric and / or a fiber wadding.
  • the methylacrylic acid-based superabsorbents polyvinyl alcohol-maleic anhydride copolymers, polysaccharide-maleic anhydride copolymers, maleic acid derivatives, acrylamidopropanesulfonic acid copolymers, starch-acrylonitrile graft polymers, gelatinized starch derivatives, alkyl- or hydroxyalkylcellulose, carboxymethylcellulose, Starch-acrylic acid graft polymers, vinyl acetate-acrylic acid ester copolymers, acrylonitrile or acrylamide copolymers.
  • Modified cellulose is preferably derivatives of cellulose, preferably sulfoalkylated cellulose and derivatives thereof, preferably cellulose ethylsulfonates, carboxyalkylated cellulose, preferably carboxymethylcellulose, carboxyethylcellulose and / or carboxypropylcellulose, more complex cellulose derivatives, such as sulphoethylcarboxymethylcellulose, carboxymethylhydroxyethylcellulose, hydroxypropylmethylcellulose, and amidated Cellulose derivatives, such as carboxymethylcellulose amide or carboxypropylcellulose amide.
  • Carboxymethylcellulose in particular is in the form of sodium carboxymethylcellulose and is commercially available under the name "Hydrofiber".
  • the fibers are transformed into a flat matrix.
  • the fibers are gradually transformed into a gel pad that holds the fluid and does not release it again.
  • the fibers are constructed so that the wound exudate is absorbed only in the vertical direction. This means that, as long as the capacity is sufficient, the exudate does not flow over the edge of the wound. In this way, wound edge maceration can be effectively prevented.
  • hydroactive polymers may also be alginates.
  • Alginates are extracted from brown algae and woven into a fibrous web. Chemically are polysaccharides, namely calcium and / or Natrimsalze the alginic acids. Alginates can absorb up to 20 times their own weight of liquid, while the wound exudate is stored in the cavities. The Ca2 + ions contained in the alginate lattice are exchanged with the Na + ions from the exudate until the degree of saturation of Na ions in the alginate is reached. This leads to a swelling of the wound dressing and the conversion of the alginate fiber into a gel body by swelling of the fibers.
  • said hydroactive polymers may also be hydrogel nanoparticles comprising hydroxy-terminated methacrylate monomers such as 2-hydroxyethyl methacrylate (HEMA) and / or 2-hydroxypropyl methacrylate (HPMA), e.g. marketed as Altrazeal act.
  • HEMA 2-hydroxyethyl methacrylate
  • HPMA 2-hydroxypropyl methacrylate
  • At least one wound care article of the set further comprises a nonwoven comprising cellulose fibers, which is also referred to below as absorption body.
  • the absorbent body may preferably comprise a substantially flat absorbent body of absorbent material consisting of an absorbent web having superabsorbent polymers dispersed therein. These may be in the form of a granulate, a powder, a bed, a compact, a foam, in the form of fibers, a Fasergewirkeses, -laid or -fleece and / or a fiber wadding.
  • the absorbent body has at least one material which is selected from the group comprising a mat, in particular an airlaid of said yarns or fibers of superabsorbent polymers with incorporated superabsorbent polymers, and / or a loose filling of superabsorbent polymers.
  • Said Airlaid mat may preferably have a substantially flat material portion of absorbent material, the z. B. consists of an absorbent fleece of said fibers with superabsorbent polymers distributed therein.
  • This absorbent body may correspond to the absorbent pad contained in a wound dressing of the Applicant of the present invention, as disclosed, for example, in WO03094813, WO2007051599 and WO0152780 and sold under the trade name "sorbion sachet.”
  • the disclosure of said publications be fully attached to the disclosure of this document.
  • the absorbent body can also form a core which - possibly flake-like - fibers or yarns of superabsorbent polymers and superabsorbent polymers in granular form, wherein the granules are glued or welded to the fibers or yarns in several heights, and the granules are distributed over more than 50% of the total height of at least a portion of the core, wherein there are mixed areas of granules and fibers.
  • the proportion by weight of the superabsorbent polymers may preferably be in the range between 10 and 25% by weight. Similar constructions are known from conventional incontinence materials and known as sanitary napkins for their cushioning properties.
  • the absorption body particularly preferably has a fleece, preferably a nonwoven or airlaid, which consists of superabsorbent fibers ("SAF", preferably polyacrylates) or contains these as constituent.
  • SAF superabsorbent fibers
  • the fibers can be mixed, for example, with fluff pulp (cellulose) or with polyester fibers. Alternatively or additionally, a layer structure may be provided.
  • the absorbent body in another embodiment, may also include at least one flat layer comprising fibers or yarns of superabsorbent polymers to which superabsorbent polymers in granular form are adhered.
  • at least one flat layer comprising fibers or yarns of superabsorbent polymers to which superabsorbent polymers in granular form are adhered.
  • a second, flanking cover layer may be provided.
  • said absorption body has a surface mass of 5 ⁇ 10, 5 ⁇ 20, 10 ⁇ 20, 10 ⁇ 10, 10 ⁇ 15 or 15 ⁇ 15 cm.
  • the basis weight may be in the range between> 50 and ⁇ 2000 g / m 2 .
  • Basis weights of 50, 100, 150, 200, 250, 300, 350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000, 1050, 1 100 are preferred.
  • the thickness can be in the range between> 2 and ⁇ 50 mm. Preferred are thicknesses of 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46 , 48, and / or 50 are each provided +/- 1 mm.
  • the absorption capacity can be in the range between> 3 and ⁇ 30 ml of 0.9% common salt / m 2 at 0.2 psi pressure. Values of 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 are preferred.
  • the absorption capacity can be in the range between> 2 and ⁇ 50 g water / g. Values of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 are preferred.
  • the total content of superabsorbent polymers can be in the range between> 5 and ⁇ 100% w / w.
  • Values of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 are preferred , 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49 , 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74 , 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99 and / or 100% w / w.
  • the tensile strength can be in the range between> 5 and ⁇ 80 N / 5 cm. Values of 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27 are preferred , 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52 , 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77 , 78, 79 and / or 80 N / 5 cm.
  • the extensibility can be in the range between> 10 and ⁇ 80%. Values of 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32 are preferred , 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57 , 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79 and / or 80%.
  • superabsorbent fibers the following types have been found to be particularly advantageous in practice:
  • Composition 1 layer 40% Bicompone Layer structure: 25% polyester; 40%
  • Thermogeb Short cut SAF bonded Airlaid short cut fiber 60 and one with laminated ser; 60%
  • the fluid retention can be between> 5 and ⁇ 100 g / g. Values of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23 are preferred. 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99 and / or 100 g / g In practice, the following types have proven to be particularly advantageous
  • a wound care article of the set or an absorbent body contained therein may have repeating patterns or grains, such as e.g. a checked pattern, a punching pattern or the like. It is further particularly preferred that said absorbent body has, in addition to a layer of superabsorbent polymers, at least one second flanking layer which has fewer or no superabsorbent polymers and extends in terms of area beyond the former. In this way, it is ensured that the layer comprising superabsorbent polymers can gain volume in accordance with the liquid uptake, without the volume increase being recognizable to the outside, since the latter is laminated by the second layer.
  • the wound care article set further comprises a wound spacer grid.
  • wound distance grid a lattice or gauzy structure that - often as a so-called “primary dressing” - is applied directly to a wound before, if necessary, a secondary dressing is applied.
  • Wound distance screens are also often called “Wound gazes” are primarily intended to prevent the entire wound dressing from sticking to the wound, for which wound distance lattices are made of or coated with a material that reduces or prevents adhesion to the wound Wunddistanzgitters be designed so that adhesion to the wound is reduced or prevented.
  • wound spacer meshes are e.g. the products “Mepitel” (silicone-coated, elastic polyamide mesh), “Physiotulle”, “Urgotül” (network of polyester fibers soaked with hydrocolloid particles and vaseline) and “ADAPTIC” (smooth viscose knit, impregnated with an oil-in-water emulsion).
  • the aforementioned products are two-dimensional wound spacer meshes, which therefore essentially take the form of a gauze or a mesh.
  • a three-dimensional wound distance grid is known under the name "sorbion plus” and described in particular in the EP2004116 of the present applicant, the contents of which are hereby fully referenced.
  • Such a three-dimensional wound spacer grid has a liquid-permeable, pliable material section made of a thermoplastic, which has a first, smooth surface, a surface facing away from the smooth surface and a second rough surface.
  • the latter is produced by a multiplicity of three-dimensional perforations, the walls of which protrude from the first, smooth surface and each run out into a free-edge edge projection, giving the second surface a rough grip.
  • the perforations are made by punching inserted on one side or by deep drawing over a perforated plate. This creates a rough side with overhangs and a more or less smooth side.
  • a wound spacer grid reliably prevents adhesion of the wound care article to the wound and wound edge maceration. Therefore, unlike the foams known from the prior art, the said active element no longer has to be tailored to the shape of the wound, which considerably reduces the workload of the medical staff.
  • At least one wound care article preferably has a sheath, which in turn has means that are designed and / or selected such that the sheath can be deformed in a targeted manner at least partially by an increase in volume of the absorption body due to fluid absorption.
  • a behavior can be achieved with unidirectionally elastic material, that is to say a material which can be stretched in one direction, but not in the direction orthogonal thereto.
  • At least one wind care article comprises a composition containing at least one nutritive, at least one disinfecting or decontaminating and / or at least one protease inhibiting active substance and / or active substance complex for the external supply and / or treatment of wounds of the human or animal body having.
  • FIG. 1 shows a wound care article set 10 in a position applied to a depth wound 11, at the wound base 12 of which exudate 13 has accumulated.
  • the set has a first flat wound care article 14 comprising hydroactive polymers and further wound care articles 15, 16 having hydroactive polymers.
  • the further wound care articles 15, 16 have a lower fluid retention and / or a lower fluid absorption capacity than the first wound care article 14 the first flat wound care article is a wound dressing, while the other wound care articles are a wound dressing.
  • Fig. 1 shows a preferred embodiment in which there are two sets of wound inserts with different fluid retention and / or fluid uptake capacity, with those with relatively less retention and / or capacity as shown in Fig. 1 being placed close to the wound base, as indicated by Figs gray scale wedge on the left in the figure indicated gradient is symbolized. Due to the different fluid retention or fluid intake capacities, a retention or capacity gradient is achieved which ensures that fluid in the second and further wound care articles is effectively transported further, namely from the wound care articles with relatively less fluid retention and / or fluid absorption capacity to the wound care arti kelnm it rel at iv h eher fluid retention and / or fluid absorption capacity. Finally, the liquid is then delivered to the first wound care article (wound dressing), which, as stated above, preferably has the relatively highest liquid retention and / or liquid absorption capacity.
  • the said wound inserts are also well suited as fillers for wound bags 17 or for the lining of the wound edge 18.
  • the wound dressing 14 shown in FIG. 1 is a product comprising superabsorbent polymers in a cellulose fleece matrix with a spaced polypropylene fleece sleeve.
  • the grammage of the product, sold under the name "sorbion sachet", for example, has been chosen to achieve high capacity and / or retention.
  • the wound dressing has the expansion edge described above.
  • the wound inserts 15, 16 shown in Fig. 1 also comprise superabsorbent polymers in a cellulosic nonwoven matrix having a spaced polypropylene fleece sheath from a product.
  • Fig. 2 shows a similar wound care set as in Fig. 1, with the difference that the wound inserts 25, 15 are formed without a shell.
  • Fig. 3 shows a similar wound care set as in Fig. 1, with the difference that here wound inserts are provided with superabsorbent fibers. These are for example in tampon form and are formed without a shell.
  • FIG. 4 shows a similar wound care set as FIG. 1, with the difference that different geometries of the wound inserts are shown by way of example, namely cylindrical (41), cup-shaped (42), tetradedron or pyramidal (43) or tamponade-like (44).
  • the wound care set in addition to the first wound care article 54 also has at least one second wound care article 55, which are designed segmentable.
  • the second wound care article is of the same size or even larger in size than the first wound care article.
  • the second wound care article has printed cut lines 56 by means of which the second wound care article, e.g. can be subdivided by a caregiver into smaller segments, which are then used as wound inserts.
  • the second wound care article and possibly also other wound care articles preferably have no shell.
  • the second wound care article may also have introduced perforations.

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  • Health & Medical Sciences (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)
  • Materials For Medical Uses (AREA)

Abstract

L'invention concerne un ensemble d'articles pour le soin de plaies comprenant au moins un premier article de soin de plaie plan comportant des polymères hydroactifs, au moins un deuxième article de soin de plaie renfermant des polymères hydroactifs, ce deuxième article de soin de plaie et éventuellement tout autre article de soin de plaie présentant une rétention de liquides et/ou une capacité de réception de liquide inférieure(s) à celle(s) du premier article de soin de plaie.
EP12798721.2A 2011-12-09 2012-12-07 Ensemble comprenant un pansement et une substance de remplissage de plaie Withdrawn EP2787944A1 (fr)

Applications Claiming Priority (2)

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DE102011056245 2011-12-09
PCT/EP2012/074836 WO2013083800A1 (fr) 2011-12-09 2012-12-07 Ensemble comprenant un pansement et une substance de remplissage de plaie

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EP2787944A1 true EP2787944A1 (fr) 2014-10-15

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WO2013083800A1 (fr) 2013-06-13

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