DE202009016804U1 - Labyrinth material for flat drainage for wound treatment - Google Patents

Abstract

Labyrinth material for flat drainage for wound treatment, in particular for vacuum wound treatment of large and deep wounds with simultaneous use of conventional airtight wound coverings, drainage tubes and Vakuumabsaugvorrichtungen, characterized in that the labyrinth material from a wound-away foil-like, flexible first layer (1) with a drain (6) for Secretion and a second, the wound facing flexible layer (2), wherein between said layers a level (17) is provided as a labyrinth (9), the two layers (1), (2) from each other, even under negative pressure, so spaced, that between the spaced-apart means (3) a labyrinth (9) is formed and on the wound-facing layer (2), at least a plurality of perforations (5) are provided.

Description

The Invention relates to labyrinth material for a flat drainage, used for various forms of wound care can be, but especially for the vacuum wound treatment of large and deep wounds.

It is a common task in medicine, wound fluids suck. In particular, it is deep, big and in the process in particular of infected surface wounds the hitherto customary Practice, in the wound a wound dressing that does not interfere with the tissue grows, insert. On this wound dressing brings the Medics a first layer of gauze, in which then by hand a drainage tube, partially wound several times, is hung up and this again with a covered second layer of gauze and then the entire The wound site is covered with a plaster. The end the drainage tube is then subjected to a negative pressure, whereby the wound fluid can be sucked off.

Next the long duration of the means described above for relocation required time, this procedure also requires considerable skill of the wounding medical practitioner, because during wound care, all separately inserted device components to fix, which is often not by a person alone can be accomplished.

Another type of wound dressings, which were developed in particular for the vacuum wound treatment, is, for example, in DE 601 18 546 T2 described.

The wound dressing described there on the one hand, a relatively high Manufacturing effort and on the other not readily to different Wound sizes customizable. To a vacuum treatment To perform this solution needs to another another relatively complicated executed additional Editions and usually bell-like degrees of Wound to which an external vacuum connection is attached.

Such, the skin surface far superior designs considerably restrict the patient's freedom of movement and create unpleasant additional Pressure loads.

The above-outlined treatment of such wounds under negative pressure is a method practiced for many years, which positively influences the healing of deep and large-area wounds by permanent wound stimulation. This type of vacuum wound treatment is, for example, in DE 694 25 881 T3 . DE 692 29 940 T2 and DE 692 24 847 T3 described in detail, which is why reference should be made here only.

In addition, there are a variety of other solutions, which should be listed here only as an example, because they concern more distant technical solutions. That's how it is US 6,695,824 B2 a wound dressing covering for outer flat wounds consisting of two layers, the first layer being applied directly to the wound and the second layer having an outward-acting moisture barrier. Between the layers mentioned several hose-like supply lines are provided which ensure a moisture supply to the wound.

For the use in the context of a wound treatment deeper, poorly healing Wounds using the technique of vacuum wound treatment However, the aforementioned wound dressing cover is not designed and also not suitable, because a vacuum-tight lead-out the sometimes several times provided hoses from the wound area is practically impossible.

The same applies to a variety of devices for the extraction of wound secretions from body cavities, such. In EP 1 764 127 A1 described.

Furthermore, in the EP 2008/003251 a flat drainage with a derivative tail described.

present Invention is based on the object of specifying a drainage agent, which without much manual skill by the surgeon exactly to the wound in question, especially a large one deep wound, which is intended for vacuum wound treatment, customizable is, no elaborate fixations when laying in the wound area and in particular a lightweight sealability in a Vacuum wound treatment allows. At the same time, the inventive Labyrinth material effect a more effective drainage effect than allow drainages known in the art. In particular, the proposed labyrinth material should also be a improved and more bearable for the patient Allow vacuum wound treatment of large open wounds and ensure a significantly increased wearing comfort.

The The object of the invention is characterized by the characterizing features of Patent claim 1 solved. Advantageous embodiments are the subject of the subordinate claims.

The essence of the invention is that a very flexible labyrinth material is formed as a film material with labyrinthine ways and when placing two layers on each other, a plane is provided which spaces the first and second layers even under the influence of negative pressure such that labyrinth-like paths are formed between means applied cohesively to the film and the one layer is provided with at least perforations.

In preferred embodiment are the first and second layer and the spaced-apart plane, including the spacing means, at least on a layer with a drain for Secretion trained.

In further, particularly preferred for practical use Embodiment of the invention, the first and second layers are at least in the wound area to be detected by it from an optically translucent, made of flexible film material.

The Invention will be described below with reference to several different Embodiments will be shown in more detail.

It demonstrate:

1 a first embodiment of the labyrinth material in the lateral section

2 a second embodiment of the labyrinth material in the lateral section

3 : A plan view of an embodiment according to 1 a first layer

4 : A plan view of an embodiment according to 1 a second layer

5 : A plan view of an embodiment as a surface drainage.

The invention is based on the basic principle first on the basis of 1 . 2 . 3 . 4 will be described in more detail, which schematically represent a lateral section and a plan view.

Here are from the 1 and 3 the functional constituents essential for the labyrinth material according to the invention, namely a wound-off first layer consisting of foil ( 1 ) with drain ( 6 ) and one with perforations ( 5 ), the wound-facing second layer ( 2 ). Between these two layers is a plane ( 17 ), both layers ( 1 ) 2 ) spaced from each other, even under vacuum, that between them, in the plane ( 17 ) materially introduced spacing means ( 3 ) labyrinthine paths as a labyrinth ( 9 ) are formed.

Since the irregularly spaced-apart means (FIG. 3 ) formed mazes ( 9 ) laterally in the plane ( 17 ) can open to the outside, when applying vacuum ( 11 ), not shown here in other full-surface sealing of the device against the skin of the patient, already in this embodiment, the suction of wound fluid ( 10 ) respectively. To improve and especially homogenization of the suction effect, as in 1 and 3 represented, at least in the second layer ( 2 ), the wound-facing layer, perforations ( 5 ), which, in the plane ( 17 ) leading, with the labyrinth ( 9 ) keep in touch.

2 shows a variant in the production of the labyrinth material, in which both layers, the first and the second layer ( 1 ) 2 ) using one of the means ( 3 ) free folding zone ( 7 ) on a slide ( 8th ) are connected.

Both layers become cohesive, means ( 3 ) on funds ( 3 ), after folding with the compound ( 4 ) connected.

The main advantage of the proposed labyrinth material is that on a very thin film thickness ( 12 ) a sublime middle strength ( 13 ) is applied cohesively. This means that a film thickness ( 12 ) with a minimum thickness of 0.05 mm with means ( 3 ) and middle strength ( 13 ) of more than 3 mm can be fitted.

In the same way, for all embodiments of the invention described above, the following applies:
The spacing means ( 3 ) may optionally be formed by nubs and / or webs, which preferably consist of a hydrophobic material.

In this case, the spacing means formed by knobs and / or webs (FIG. 3 ) advantageous cohesive constituent of the first layer ( 1 ) or second layer ( 2 ) be. In particular, knobs can be made by elastic, self-contained means ( 3 ) using screen printing technology.

A Such an embodiment using screen printing technology shows advantages This particularly preferred embodiment of the labyrinth material in In terms of optical transparency, flexibility and weightless lightness of such a manufactured Labyrinth material and in the application as a flat drainage.

in the The invention relates to the mentioned nubs and / or webs preferably from a hydrophobic, for the screen printing technology to manufacture suitable material.

The labyrinth material according to the invention can vary in terms of length and width, film thickness ( 12 ) and middle strength ( 13 ) and medium form by screen printing technology, using high viscosity materials, cold printed, treated under temperature or UV light. A typical, areal extent is on the order of 10 × 10 and 20 × 10 cm, which corresponds to the vast majority of common wound sizes.

The Projects of other, in particular larger basic dimensions is of course possible without problems, since the tailor-made cut at least in the context of the wound area each embodiment is enabled.

• – Alle beschriebenen Ausführungsformen passgenau auf jede Wundform zuschneidbar sind, ohne dass der Patient dadurch bei der Einpassung einer Belastung ausgesetzt ist.
• – Alle zur Ausbildung des Labyrinthmaterials eingesetzten Einzelkomponenten flexibel, weich, elastisch und leicht ausführbar sind, so dass gegenüber bekannten Lösungen ein erhöhter Tragekomfort beim Patienten gegeben ist und vor allem keine störenden Druckbelastungen, insbesondere durch Schlauchenden im Wundbereich entstehen, die zu weiteren Komplikationen bei der Wundbehandlung führen können.
• – Ausführungen nach den 1 bis 5 ermöglichen eine körpernahe Abdichtung aller Komponenten im Wesentlichen auf der Hautoberfläche, was dem Patienten eine leichtere Lageveränderung im Vergleich zu sonst bekannten Vakuumbehandlungsvorrichtungen ermöglicht.
• – Die Foliendicke (12) von mininal 0,05 mm Dicke eine hohe Elastizität mit weniger Wundbelastung ermöglicht.
• – Das Anbringen der elastischen Mittel (3) in Form von Noppen oder Stegen die individuelle Labyrinthgestaltung mit hoher Wundsekretabflussgarantie ermöglicht.

The advantages of the present invention consist essentially in that:

• - All described embodiments can be cut to fit any wound shape, without the patient being exposed to it when fitting a load.
• - All the individual components used to form the labyrinth material are flexible, soft, elastic and easy to carry out, so that compared to known solutions increased comfort in the patient is given and above all no disturbing pressure loads, in particular by hose ends in the wound area, resulting in further complications in the Can lead to wound treatment.
• - versions according to 1 to 5 allow a close-to-body sealing of all components substantially on the skin surface, allowing the patient a lighter change in position compared to other known vacuum treatment devices.
• - The film thickness ( 12 ) of mininal 0.05 mm thickness allows a high elasticity with less wound load.
• The attachment of the elastic means ( 3 ) in the form of knobs or webs allows the individual labyrinth design with high Wundsekretabflussgarantie.

Labyrinth material proposed according to the invention is, as mentioned at the beginning, conceived in particular for carrying out a substantially simplified vacuum wound treatment. However, if one dispenses with the above-described airtight separate Überklebung the flat drainage and other lying outside this invention components, the flat drainage, optionally modified by the 5 described modifications with webs ( 15 ) also for other treatment purposes, eg. B. as surface drainage ( 16 ) are used. Advantageous applications of this surface drainage ( 16 ), in conjunction with at least one derivative ( 14 ) can thus z. B. also represent the treatment of problematic large and weeping wounds. In their treatment using otherwise customary wound dressings, which tend to grow in whole or in part with the wound and therefore necessitate a frequent change of the wound dressings, which slows down the healing process, the healing could be carried out using bars ( 15 ) formed film by means of screen printing technology as surface drainage ( 16 ) are also significantly accelerated.

1

first layer

2

second layer

3

medium

4

connection

5

perforation

6

outflow

7

folding zone

8th

foil

9

labyrinth

10

wound fluid

11

vacuum

12

film thickness

13

starch

14

derivation

15

web

16

surface drainage

17

level

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 60118546 T2 [0004]
• - DE 69425881 T3 [0007]
• - DE 69229940 T2 [0007]
• - DE 69224847 T3 [0007]
• - US 6695824 B2 [0008]
• - EP 1764127 A1 [0010]
• - EP 2008/003251 [0011]

Claims (14)

Labyrinth material for flat drainage for wound treatment, in particular for vacuum wound treatment of large and deep wounds with simultaneous use of conventional airtight wound coverings, drainage tubes and Vakuumabsaugvorrichtungen, characterized in that the labyrinth material from a wound-away foil-like, flexible first layer ( 1 ) with a drain ( 6 ) for secretion and a second, wound-facing flexible layer ( 2 ), whereby a plane (between 17 ) as a labyrinth ( 9 ), both layers ( 1 ) 2 ) are spaced from each other, even when subjected to negative pressure, such that between introduced spacing means ( 3 ) a labyrinth ( 9 ) and on the wound-facing layer ( 2 ), at least several perforations ( 5 ) are provided. Labyrinth material for flat drainage according to claim 1, characterized in that the first layer ( 1 ) and the second layer ( 2 ) as a thin film with means ( 3 ), formed as knobs or webs, are equipped. Flat drainage labyrinth material according to claim 1, characterized in that the means ( 3 ) by screen printing technology to a film thickness ( 12 ), 0.05 mm minimum. Labyrinth material for flat drainage according to claim 1, characterized in that the planar formation of the layers ( 1 ) 2 ) and the level ( 17 ) are designed so large that they can be cut together to the actual wound size and shape. Labyrinth material for flat drainage according to claim 1, characterized in that the derivation of the wound secretion in vacuum ( 11 ) such that an outflow ( 6 ), approximately in the center of the area, connected to a derivative ( 14 ), this makes possible. Labyrinth material for flat drainage according to claim 1, characterized in that at least the second layer ( 2 ) with perforations ( 5 ), which, in the plane ( 17 ) leading, with the labyrinth ( 9 ). Flat drainage labyrinth material according to claim 1, characterized in that the spacing means ( 3 ) by knobs and / or webs ( 15 ) are formed, which preferably consist of a viscous, hydrophobic material. Labyrinth material for flat drainage according to claim 1, characterized in that by nubs and / or webs ( 15 ) spaced means ( 3 ) integral part of the first and second layer ( 1 ) 2 ) are. Labyrinth material for flat drainage according to claim 1, characterized in that the knobs and / or webs ( 15 ) are formed by a viscous, thermosetting, thermoplastic material. Flat drainage labyrinth material according to claim 1, characterized in that the first and second layers ( 1 ) 2 ) of the labyrinth material are made of an at least translucent material. Labyrinth material for flat drainage according to claim 1, characterized in that a thin film with webs ( 15 ) as surface drainage ( 16 ) is formed by screen printing technology. Flat drainage labyrinth material according to claim 1, characterized in that the means ( 3 ) can be connected cohesively with each other. Labyrinth material for flat drainage according to claim 1, characterized in that the knobs or webs as means ( 3 ), materially connected to the film ( 8th ), are produced by injection molding. Labyrinth material for flat drainage according to claim 1, characterized in that the surface drainage ( 16 ) by means of glued-in webs ( 15 ) is produced on adhesive sheets.