DE202011104078U1 - Labyrinth - flat drain - Google Patents

Abstract

Labyrinth flat drain for the drainage and suction of liquids from body cavities and wounds, since a lower layer (5) form a labyrinth (19) with means (7) and connected by means of connection (18), secretion (17) through perforation (4) drain a drain hose (11).

Description

The invention relates to a labyrinth drainage for a flat drain, which can be used for various forms of wound treatment, but in particular for vacuum wound treatment of large and deep wounds and burns.

It is a common task in medicine to suck out wound fluids. In particular, in the case of deep, large and, in particular, infected surface wounds, the hitherto customary practice is to place a wound dressing which does not adhere to the tissue into the wound. On this wound dressing the physician brings a first layer of gauze, in which then by hand a drainage tube, partially wound several times, is applied and this covered again with a second layer of gauze and then the entire wound site is covered with a plaster. The end of the drainage tube is then subjected to a negative pressure, whereby the wound fluid can be sucked off.

In addition to the long time required for laying the above described means time, this approach also requires considerable skill of the wound care practitioner, because during wound care all separately inserted device components are to be fixed, which often can not be accomplished by one person alone.

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

The wound dressing described there requires, on the one hand, a relatively high manufacturing outlay and, on the other hand, is not readily adaptable to different wound sizes. In order to carry out a vacuum treatment, this solution requires, on the other hand, other relatively complicated supplementary supports and, as a rule, bell-shaped seals of the wound, to which an external vacuum connection is attached.

Such, the skin surface far superior designs significantly restrict the freedom of movement of the patient and also generate 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 cover 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 use in the context of wound treatment of deep, poorly healing wounds with the aid of the technique of vacuum wound treatment, however, the abovementioned wound dressing cover is not designed and also unsuitable, because a vacuum-tight lead-out of the sometimes multiple 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.

The present invention has for its object to provide a drainage agent, which without much manual skill by the surgeon accurately to the relevant wound, especially a large deep wound, which u. a. is intended for vacuum wound treatment, is customizable, requires no complicated fixations when laying in the wound area and in particular allows easy sealability in the context of a vacuum wound treatment. At the same time, the labyrinth drain according to the invention is intended to produce a more effective drainage effect than is possible with drainages known from the prior art. In particular, the proposed labyrinth drain should also enable an improved and more tolerable for the patient vacuum wound treatment of large open wounds and ensure a significantly increased comfort.

The object of the invention is gellst by the characterizing features of claim 1. Advantageous embodiments are the subject of the dependent claims.

The essence of the invention is that a very flexible, long labyrinth material as a film material with labyrinthine ways through Compounds is formed and when laying two layers on top of each other a plane is provided, the first and second layer spaced even under the influence of negative pressure such that between, on the film cohesively applied means, labyrinthine paths are formed and provided a layer at least with perforations is.

In a preferred embodiment, the first and second layers, as well as the spacing plane including the spacing means, are formed at least on a layer having a secretion drainage opening.

In a further embodiment of the invention, which is particularly preferred for practical use, the first and second layers are made of an optically translucent, flexible film material, at least in the wound area to be detected by them; the compounds conduct the wound secretion to the suction site.

The invention will be described in more detail below with reference to several different embodiments.

Show it:

1 : a first embodiment of the labyrinth Flachdrains

2 a second embodiment of the labyrinth Flachdrains with coupling.

LIST OF REFERENCE NUMBERS

1

Maze flat drain

2

drain width

3

drain length

4

Drainperforation

5

Lower class

6

upper layer

7

spaced funds

8th

labyrinth ground

9

drain thickness

10

poetry

11

drain hose

12

pump connection

13

hose clamp

14

coupling film

15

coupling width

16

impact zone

17

secretion

18

connection

19

labyrinth

20

level

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

It is from the 1 for the labyrinth flat drain (according to the invention) 1 ) essential functional components, namely a wound-off, consisting of foil or textile upper layer ( 6 ) and one with perforations ( 4 ), the wound-facing lower layer ( 5 ). Between these two layers is a plane ( 20 ), both layers ( 5 ) 6 ) spaced from each other, even under vacuum, that between them, in the plane ( 20 ) materially introduced spaced apart means ( 7 ) labyrinthine paths as a labyrinth ( 19 ) are formed.

Because the irregularly spaced, spaced means (FIG. 7 ) formed mazes ( 19 ) laterally in the plane ( 20 ) open to the outside, can in vacuum application, not shown here in other full-surface sealing of the device against the skin of the patient, already in this embodiment, the suction of secretion ( 17 ) respectively.

To improve and especially homogenization of the suction effect, as in 1 represented, at least in the lower layer ( 5 ), the wound-facing layer, perforations ( 4 ), which, in the plane ( 20 ) leading, with the labyrinth ( 19 ) and between the spaced resources ( 7 ) a labyrinth floor ( 8th ) form.

To the formed layers ( 5 ) 6 ), preferably of film and textiles, durable, both layers ( 5 ) 6 ) with a connection ( 18 ) connected.

Drain width ( 2 ) and drain length ( 3 ) can be selected according to the respective indication. The drain thickness ( 9 ) is removed from the maze ( 19 ) certainly. For reasons of flexibility, the wire thickness should preferably not exceed 3 mm.

With the help of the connection ( 18 ) the drain hose ( 11 ) by means of seal ( 10 ) connected.

The drain hose ( 11 ) is fitted with a hose clamp ( 13 ) and a pump connection ( 12 ) assembled.

In the 2 two or more labyrinth flat drains ( 1 ) at the impact zone ( 16 ) by means of a coupling foil ( 14 ) in the coupling width ( 15 ) connected.

In the same way, for all embodiments of the invention described above, the following applies:
The spaced means ( 7 ) may optionally be formed by nubs and / or webs, which in turn preferably consist of a hydrophobic material or silicone.

In this case, the spaced means (10) formed by dimples and / or webs can be used. 7 ) advantageously cohesive constituent of the upper layer ( 6 ) or lower layer ( 5 ) be. In particular, knobs can be made by elastic, self-contained means ( 7 ) using screen printing technology.

Such an embodiment by means of screen printing technology shows advantages of this particularly preferred embodiment of the labyrinth material with regard to the optical transparency, flexibility and weightless lightness of a labyrinth material thus produced and in the application as a flat drainage.

In the context of the invention, the addressed nubs and / or webs are preferably made of a hydrophobic material or silicone suitable for screen printing technology.

The labyrinth material according to the invention or the labyrinth flat drain ( 1 ) can be made in different dimensions in length and width. A typical, areal extent is in the order of 500 × 20, 200 × 25 and 400 × 25 mm, which corresponds to the vast majority of common wound sizes.

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

• – Alle beschriebenen Ausführungsformen passgenau auf jede Wundform zuschneidbar sind, ohne dass der Patient dadurch bei der Einpassung einer Belastung ausgesetzt ist.
• – Alle zur Ausbildung der Labyrinthdrainage 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 2 ermöglichen eine körpernahe Abdichtung aller Komponenten im Wesentlichen auf der Hautoberfläche, was dem Patienten eine leichtere Lageveränderung im Vergleich zu sonst bekannten Vakuumbehandlungsvorrichtungen ermöglicht.
• – Das Anbringen der beabstandenen Mittel (7) in Form von Noppen oder Stegen ermöglicht eine hohe Wundsekretabflussgarantie.

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 drainage 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 2 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 attachment of the spaced means ( 7 ) in the form of knobs or webs allows a high wound secretion drainage guarantee.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes 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 (10)

Labyrinth-flat drainage for the discharge and suction of fluids from body cavities and wounds, characterized in that an upper layer ( 6 ) and a lower layer ( 5 ) a labyrinth ( 19 ) with means ( 7 ) and by means of compound ( 18 ), secretion ( 17 ) by perforation ( 4 ) through a drain hose ( 11 ). Labyrinth flat drainage according to claim 1, characterized in that the connection ( 18 ) is an adhesive film. Labyrinth flat drainage according to claim 1, characterized in that the connection ( 18 ) is a flexible, thin film. Labyrinth flat drainage according to claim 1, characterized in that the connection ( 18 ) by means of seal ( 10 ) the drain hose ( 11 ) connects. Labyrinth flat drain according to claim 1, characterized in that non-polar or textile materials as upper layer ( 6 ) and lower layer ( 5 ) with means ( 7 ) by means of connection ( 18 ) get connected. Labyrinth flat drainage according to claim 1, characterized in that textiles are provided with means ( 7 ) cohesively a labyrinth ( 19 ) form. Labyrinth flat drainage according to claim 1, characterized in that by a coupling foil ( 14 ) the drain length ( 3 ) is extended. Labyrinth flat drainage according to claim 1, characterized in that by a coupling width ( 15 ) two labyrinth flat drains ( 1 ) in the impact zone ( 16 ) elastic, flexible by a coupling foil ( 14 ) are connected. Labyrinth flat drain according to claim 1, characterized in that perforations ( 4 ) in the compound ( 18 ) are incorporated. Labyrinth flat drainage according to claim 1, characterized in that two superposed, spaced-apart means ( 7 ) a labyrinth ( 19 ) form.

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