DE19512005A1 - Wound dressing - Google Patents

Abstract

A wound dressing has an elastic fabric (1), of synthetic textile materials, welded ultrasonically to a nonwoven (4) and covering (5). Absorbent particles (3) pref. of compounded cellulose are between the polyamide loops (2) of the fabric (1) and the nonwoven (4). The fabric (1) has a ribbed structure of polyamide loops.

Description

The invention relates to a multi-layer wound dressing with ho Hem sorption capacity inside the compress, good air permeability and local wound secretion intake, for use in medicine area.

In recent years there has been the introduction of new associations systems a change in local therapy from secondary healing surrender to the wounds. The previous range of dry table salt compress over gauze with or without antibiotics, hydrophilic Materials in particulate form, different foams and Gel preparations, most recently by hydrocolloid and alginate ver volumes added.

DE 29 45 420 describes a compress for the treatment of excretions described donating wounds containing sodium chloride  and is sterile.

DE 29 46 553 describes a covering device for treating the Skin, particularly in the case of burns and wounds, presented is constructed as follows: gel-like polymers are complete or partially with a water vapor and gas permeable membrane bran wrapped.

DE 32 24 382 describes a dressing material based on hydrogel and Process for its production presented, which consists of min least one layer of a polymeric, hydrophilic gel and gel if necessary, one or more layers of a carrier material as Intermediate and / or top layer exists.

DE 39 03 672 describes crosslinked hydrogels and their use described as wound dressings that come from a variety of stocks parts, but always the properties of the Hydro own gels.

DE 32 26 754 describes a wound dressing for receiving wounds kret presented, the aluminum complex salt of starches, which due to higher molecular side chains made of acrylamide and acrylate units are modified, a lipophilic liquid and a ten sid contains.

DE 30 36 033 describes a wound treatment agent in powder form and processes for its production are presented, which on the Based on swellable organic polymers.

In DE 33 02 984 a wound covering material in sheet form is featured provides which ver from at least two over the entire area bound layers of composite material. One of the surfaces be is made of open-pore coarse foam, the other is a smoother material that does not grow into the wound. Between both are activated carbon in powder, granule or spherical form stored.

Bandage gauze made of cotton and gauze materials, with lipophilic Impregnated components meet the secondary requirements Lumbar wounds do not require and are therefore only complications cationless and quick healing wounds. The today  it is almost impossible to ignore the number of modern wound dressings The doctor and nursing staff find it difficult to choose finding the right product reliably. The on differentiate wound dressings / dressings on the market especially regarding composition, suction power and hand have. The wound compresses / dressings are all capable ability to absorb more or less exudate. This is based either on the hydrophilic nature, or on the capillary of the respective product.

DE 29 46 553, DE 39 03 672 and also DE 32 24 382 are wounds conditions described, which are based on hydrogel. The disadvantage of the wound dressings with the hydrophilic properties is only moderate suction power with the hydrogels and thus maceration the area through exudate flowing out laterally, whereby one The spread of germs to healthy tissue cannot be excluded can.

For hydrocolloid dressings with cross-linked hydrogels, as well Hydrogels, when changing the dressing comes a yellow-brown, bad mood fluid that is flushed out of the wound that must. On the other hand, colloid residues that ver in the wound remain, lead to a foreign body reaction. It is consequently a careful wound cleansing is necessary, which takes a longer time effort in wound care entails.

Further disadvantages of these wound dressings are in the wrong application wrinkles and leaks if the wound dressing is too loose, or Tension bubbles and ischemia of the peripheral zone, if the wound is too tight edition.

Becomes a wound dressing with hydrophilic properties Active ingredient added, as described in DE 32 26 754, can Contact allergies occur that change in most cases force in therapy.  

Bring wound treatment agents as presented in DE 30 36 033 when cleaning wounds and / or changing dressings in addition to Time spent removing the fresh risk of injury Ephitelrasens, granulation tissue as the most important night egg len.

DE 33 02 984 describes a wound covering material which contains activated carbon as an absorber. This has a rela tiv low sorption capacity, so that with strongly secreting Wounds the capacity of the absorber is quickly exhausted.

The object of the invention is to present a wound dressing, which is to a large extent the positive properties of two associations classes of substances, namely foams and hydrocolloids, in themselves united. So it is supposed to have a cushioning effect, useful for the arrival have a turn under compression bandages; skin-friendly, näm Lich a product without an adhesive edge or adhesive layer; absorbent depending on the thickness, promotes granulation through mechani pressure and tearing of the injected capillaries at Ver band changes work. On the other hand, it should have a high sorption possess assets, be easy to use, no fibers or other emit foreign substances, guarantee gas exchange and yourself have it removed atraumatically. Furthermore, it should the wound exsu Dat inside the compress so that maceration through out flowing wound exudate is avoided.

According to the invention, this is solved by using a synthetic Textile fabrics made of a preferably elastic backing Germ material with a rib structure, preferably made of polyamide / poly urethane loops arranged with relatively great rigidity the. In this elastic synthetic textile fabric become macroporous, spherical, strongly swelling absorber particles, preferably incorporated from compounded cellulose with one or more non-elastic fleeces are covered. The wound dressing or wound dressing constructed in this way welded on their outer edges, preferably ultrasonically  welds and also has for even distribution or fixation of the absorber particles, grid-like and arranged chamber-forming, preferably zigzag or wavy point bonds of the individual layers. The surface of the side facing the wound is like this ensure that it does not stick to the wound, that is is atraumatically removable and there are no residues in the wound remain. Due to the arrangement of elastic, synthetic textile fabric as a carrier material in combination with the Absorber material, a highly absorbent system forms, which absorbs the wound exudate inside the compress. As a fol There is an increase in the volume of the absorber fields / chambers a.

The other surface of the wound compress forms an inelastic one Material, preferably nonwovens, so that the volume increase only in a direction in which the wound and thereby exerting a mechanical pressure without a additional padding must be placed on the outside, for example with additional compression therapy.

By ultrasonically welding the layers, the morpho System logic changed so that there is no liquid transfer port more done. This leads to the formation of individual absorbers fields / chambers, thus to local exudate intake, which is against is a major advantage over single-surface compresses.

The invention will be explained in more detail using an exemplary embodiment are explained. In the accompanying drawing:

Fig. 1 shows the cross-section of the wound pad,

Fig. 2 is a top view of the wound dressing.

An elastic, synthetic, textile fabric 1 with a rough structure has a surface equipped with loops, the loops having a relatively high rigidity. The loops are preferably designed as plyamide loops 2 , into which absorber particles 3 , defined grain size and non-colloidal properties, preferably compounded cellulose, are introduced, thus producing a system with a high capillary effect.

The absorption particles 3 are covered by inelastic fleeces in the form of a fleece 4 and a cover fleece 5 , which differ significantly in their sorption properties, the fleece functioning as cover fleece 5 with less sorption.

A square-like point bond 6 , the elastic, synthetic, textile fabric 1 as the carrier material with the fleece 4 and the cover fleece 5 by zigzag, or wave-shaped side edges by means of ultrasonic welding, leads to grids 7 with absorber fields / chambers 8 .

Reference list

1 - elastic synthetic textile fabric
2 - polyamide slings
3 - absorber particles
4 - fleece
5 - cover fleece
6 - point gluing
7 - grid
8 - absorber fields / chambers

Claims (4)

1. wound dressing characterized in that it consists of an elastic, synthetic, textile fabric ( 1 ) be, which is preferably ultrasonically welded to a fleece ( 4 ) and a cover fleece ( 5 ), wherein between the polyamide loops ( 2 ) of the elastic, synthetic, textile len fabric ( 1 ) and the fleece ( 4 ), absorber particles ( 3 ), preferably made of compounded cellulose, are embedded. 2. Wound dressing according to claim 1, characterized in that the elastic, synthetic, textile fabric ( 1 ) has a rib structure, preferably made of polyamide loops ( 2 ) of relatively high rigidity, in which absorber particles ( 3 ) de defined grain size and non-colloidal properties are introduced so that a capillary effect occurs. 3. wound dressing according to claim 1, characterized in that in this by a point gluing ( 6 ) of the elastic, synthetic table fabric ( 1 ) with the fleece ( 4 ) and the cover fleece ( 5 ) the morphology is changed at these points, the Liquid transport is prevented and separate absorber fields / chambers ( 8 ) are formed, which bring about local wound exudate absorption. 4. wound dressing according to claim 1, characterized in that by the combination of elastic, synthetic, texti lem fabric ( 1 ) with one or more non-elastic materials, preferably a fleece ( 4 ) and a cover fleece ( 5 ) and interposed high-swelling absorber particles ( 3 ), which are brought by point gluing ( 6 ) into a preferably zigzag-shaped grid ( 7 ), in the case of wound exudate absorption, a volume increase in the absorber fields of the / chambers ( 8 ) occurs, which exert a mechanical pressure or irritation on the wound.