DE202009017621U1 - labyrinth drainage - Google Patents

Abstract

Labyrinth drainage for the suction of fluids from body cavities and wounds, characterized in that an upper layer (4) and a lower layer (5) form a labyrinth (6) with means (7) and by means of compounds (2), (13), ( 17), (18) labyrinth segments (12) lead into the suction circuit (9) or suction funnel (14).

Description

The Invention relates to a labyrinth drainage 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 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 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 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.

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 drainage effect a more effective drainage effect than allow drainages known in the art. In particular, the proposed labyrinth drainage should also be improved and for the patient more bearable vacuum wound treatment allow for large open wounds and one ensure 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 paths through connections and when laying two layers on each other a plane is provided, which the first and second layer spaced even under the influence of negative pressure such that between the film cohesively applied funds, labyrinthine ways are formed and the one Layer is provided at least with perforations. 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 below with reference to several different Embodiments will be shown in more detail.

It demonstrate:

1 a first embodiment of the labyrinth drainage with connection and absorption circuit

2 a second embodiment of the labyrinth drainage with connection as a spike connection

3 a third embodiment of the labyrinth drainage as a drain labyrinth with parallel connection

4 a fourth embodiment of the labyrinth drainage with connection as a star connection.

1

labyrinth drainage

2

connection

3

suction

4

upper layer

5

lower layer

6

labyrinth

7

medium

8th

perforation

9

acceptor circuit

10

flow of secretion

11

cutting circle

12

labyrinth segment

13

ears connection

14

suction funnel

15

suction hose

16

drain labyrinth

17

parallel connection

18

star connection

19

vacuum

20

level

21

suction plane

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 the functional components essential for the labyrinth drainage according to the invention, namely a wound-off, upper-layer film ( 4 ) with suction opening ( 3 ) and one with perforations ( 8th ), the wound-facing lower layer ( 5 ). Between these two layers is a plane ( 20 ), both layers ( 4 ) 5 ) spaced from each other, even under vacuum, that between them, in the plane ( 20 ) materially introduced spacing means ( 7 ) labyrinthine paths as a labyrinth ( 6 ) are formed. Since the irregularly spaced-apart means (FIG. 7 ) formed mazes ( 6 ) laterally in the plane ( 20 ) can open to the outside, when applying vacuum ( 19 ), in this case, not shown here, other full-surface sealing of the device against the skin of the patient, already in this embodiment, the suction of secretion ( 10 ) 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 ( 8th ), which, in the plane ( 20 ) leading, with the labyrinth ( 6 ) keep in touch. Around the layers formed of non-polar substances ( 4 ) 5 ), preferably made of PE film, durable, both layers ( 4 ) 5 ) with a connection ( 2 ) are connected so that labyrinth segments ( 12 ), which only up to the respective absorption circle ( 9 ), so that through the sowing level ( 21 ) with free maze ( 6 ) Secretion ( 10 ) and through the suction opening ( 3 ) upon application of a vacuum ( 19 ) can be sucked off. Even when cutting the labyrinth drainage ( 1 ) acc. Cutting circle ( 11 ) according to the respective wound size, the labyrinth and the suction function are not hindered.

In the 2 is called connection ( 2 ) a spike connection ( 13 ), in which the labyrinth segments ( 12 ) in a suction funnel ( 14 ) with suction hose ( 15 ).

at 3 was the connection ( 2 ) as a parallel connection ( 17 ) applied so that a drain labyrinth ( 16 ), in which the secretion ( 10 ) in a suction funnel ( 14 ) with suction hose ( 15 ) running.

4 shows an embodiment in which the compound ( 2 ) as a star connection ( 18 ) to the absorption circuit ( 9 ) is executed. As a result, several labyrinth segments ( 12 ).

The main advantage of the labyrinth drainage according to the invention ( 1 ) is that two bubble wrap materials, upper layer ( 4 ) and lower layer ( 5 ), with a seam as compound ( 2 ), labyrinth segments ( 12 ) that form the secretion ( 10 ) in the absorption circuit ( 9 ) through the suction opening ( 3 ) upon application of a vacuum ( 19 ) conduct. Thieves The special feature is that nonpolar air cushioning materials that are not suitable for welding, firmly connected by a connection ( 2 ), preferably by suture material, the suction function and the suction of secretion ( 10 ) and even during the wound-cutting of the labyrinth drainage ( 1 ) no malfunction can occur.

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

In this case, the spacing means formed by knobs and / or webs (FIG. 7 ) advantageously cohesive constituent of the upper layer ( 4 ) or lower layer ( 5 ) be. In particular, knobs can be made by elastic, self-contained means ( 7 ) by means of screen printing technology or as air cushion. 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. The embodiment as a bubble wrap is a very cost-effective variant. In the context of the invention, the mentioned knobs and / or webs are preferably made of a hydrophobic, suitable for screen printing technology material.

The labyrinth material according to the invention or the labyrinth drainage ( 1 ) can be made in different dimensions in length and width. A typical, areal extent is in the order of 10 × 10, 20 × 10 and 200 × 200 cm, which corresponds to the 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 4 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 elastischen Mittel (7) in Form von Noppen oder Stegen und speziell die Anwendung von doppelt gelegter Luftpolsterfolie eine hohe Wundsekretabflussgarantie ermöglichen.

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 4 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 elastic means ( 7 ) in the form of pimples or webs, and especially the use of double-layered bubble wrap, allow for a high wound-secretion drainage guarantee.

Labyrinth drainage proposed according to the invention is, as mentioned at the beginning, designed 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 3 described modifications with parallel connection ( 17 ) also for other treatment purposes, eg. B. as a drain used. Advantageous applications of these drains, in conjunction with at least one derivative ( 15 ) 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 wound dressings, which slows down the healing process, the healing could be achieved by using the foil with air cushion as drain drainage , Drainage labyrinth ( 16 ) are also significantly accelerated.

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 [0003]
• - DE 69425881 T3 [0004]
• - DE 69229940 T2 [0004]
• - DE 69224847 T3 [0004]
• - US 6695824 B2 [0005]
• EP 1764127 A1 [0006]
• - EP 2008/003251 [0007]

Claims (15)

Labyrinth drainage for the suction of fluids from body cavities and wounds, characterized in that an upper layer ( 4 ) and a lower layer ( 5 ) a labyrinth ( 6 ) with means ( 7 ) and by means of compounds ( 2 ) 13 ) 17 ) 18 ) Labyrinth segments ( 12 ) in the absorption circuit ( 9 ) or suction funnel ( 14 ). Labyrinth drainage according to claim 1, characterized in that the compound ( 2 ) is executed as a seam. Labyrinth drainage according to claim 1, characterized in that the compound ( 2 ) is a weld. Labyrinth drainage according to claim 1, characterized in that the compound ( 2 ) is an adhesive seam. Labyrinth drainage according to claim 1, characterized in that non-polar materials as upper layer ( 4 ) and lower layer ( 5 ) with means ( 7 ) by means of connection ( 2 ) 13 ) 17 ) 18 ) get connected. Labyrinth drainage according to claim 1, characterized in that in the middle of the suction circuit ( 9 ) a suction opening ( 3 ) is formed. Labyrinth drainage according to claim 1, characterized in that the labyrinth drainage ( 1 ) when cutting gem. Cutting circle ( 11 ) retains the drainage function. Labyrinth drainage according to claim 1, characterized in that through the compound ( 2 ) Suction zones ( 12 ) forming in the absorption circuit ( 9 ). Labyrinth drainage according to claim 1, characterized in that the compound ( 2 ) a spike connection ( 13 ). Labyrinth drainage according to claim 1, characterized in that the compound ( 2 ) a parallel connection ( 17 ). Labyrinth drainage according to claim 1, characterized in that the compound ( 2 ) a star connection ( 18 ). Labyrinth drainage according to claim 1, characterized in that the connections ( 13 ) 17 ) in a suction funnel ( 14 ). Labyrinth drainage according to claim 1, characterized in that the labyrinth drainage ( 1 ) above the suction opening ( 3 ) is connected to a suction element. Labyrinth drainage according to claim 1, characterized in that the suction funnel ( 14 ) with a suction hose ( 15 ) connected is. Labyrinth drainage according to claim 1, characterized in that the labyrinth drainage ( 1 ) as a drain gem. Drainage labyrinth ( 16 ) Application finds.