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DE19844355A1 - Adhesive wound dressing of flexible, membrane like material penetrable by air comprises integrated device which drains wound secretions or produces reduced pressure, or can be connected to an external suction system - Google Patents

Adhesive wound dressing of flexible, membrane like material penetrable by air comprises integrated device which drains wound secretions or produces reduced pressure, or can be connected to an external suction system

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Publication number
DE19844355A1
DE19844355A1DE19844355ADE19844355ADE19844355A1DE 19844355 A1DE19844355 A1DE 19844355A1DE 19844355 ADE19844355 ADE 19844355ADE 19844355 ADE19844355 ADE 19844355ADE 19844355 A1DE19844355 A1DE 19844355A1
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Germany
Prior art keywords
wound
wound dressing
dressing according
membrane
dressing
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DE19844355A
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German (de)
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Rainer E Sachse
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Individual
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Individual
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Priority to DE19844355ApriorityCriticalpatent/DE19844355A1/en
Publication of DE19844355A1publicationCriticalpatent/DE19844355A1/en
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Abstract

Adhesive wound dressing made from flexible, membrane like material (1) penetrable by air comprises (either at its center or on its periphery) an integrated device (3) which drains wound secretions (6) or produces a reduced pressure, or can be connected to an external suction system.

Description

Translated fromGerman

Die Aufgabe eines Wundverbandes besteht im Schutz der Wunde vor Verschmut­zung und Kontamination von außen und Gestaltung eines für die Wundheilung günstigen Milieus. Dabei ist es günstig, wenn überschüssige Wundsekretionen aus der Wunde entfernt werden, da diese durch Substratakkumulation einen guten Nährboden für eine Infektion darstellen und Wundinfektionen fördern. - Eine wei­tere Funktion eines Wundverbandes ist es dabei, die Wunde möglichst vor chemi­schen und mechanischen Einflüssen zu schützen und andererseits eine Ver­schmutzung der Umgebung durch Wundsekret zu verhindern. -The task of a wound dressing is to protect the wound from dirtExternal contamination and contamination and design of one for wound healingfavorable milieus. It is beneficial if there is excess wound secretioncan be removed from the wound, as these accumulate well due to substrate accumulationProvide breeding ground for infection and promote wound infections. - A whiteAnother function of a wound dressing is to protect the wound from chemito protect against mechanical and mechanical influences and on the other hand a verto prevent pollution of the environment by wound secretions. -

Eine sehr große Anzahl unterschiedlicher Wundverbände wurden dabei im Laufe der Zeit entwickelt, angefangen von osmotisch aktiven Verbänden, wie Honig oder Perubalsam, die dann evtl. mit einem saugfähigen Material abgedeckt wurden, bis hin zu dem derzeit wohl modernsten Konzept der Wundabdeckung mit einer semi­permeablen Membran, die mit einem Adhäsiv versehen ist. Nachteile der absor­bierenden Verbände ist dabei die Tatsache, daß diese Verbände die Wunde aus­trocknen können, was für die Reepithelisierung und Wundheilung von Nachteil ist. Im Gegensatz dazu haben semi-permeable oder feuchtigkeits-undurchlässige Ver­bände den Vorteil, daß sie eine Reepithelisierung der Wunde fördern, andererseits kommt es oft zu der oben erwähnten Akkumulation von Wundsekret mit darauffol­gender Infektionsbildung. Eine in jüngerer Zeit angewandte Methode der Wund­behandlung löst dieses Problem durch Abdecken der Wunde mit einer Membran mit darunterliegendem Saugschlauch, der entweder durch einen Stichkanal durch gesunde Haut oder aber zwischen der Haut und der Membran von der Wunde wegführt. Diese Methode, bei der die Wundheilung wahrscheinlich außerdem auch durch den auf die Wunde einwirkenden Unterdruck gefördert wird, hat jedoch den Nachteil, daß entweder gesundes Gewebe verletzt und dem Risiko einer Infek­tion ausgesetzt wird, oder bei Ableitung zwischen der r Haut und dem Wundver­ band ein luft- und sekretdichter Abschluß meistens nur extrem schwer zu errei­chen ist.A very large number of different wound dressings were made during the coursedeveloped over time, starting from osmotically active associations such as honey orPeru balsam, which may have been covered with an absorbent material untiltowards the currently most modern concept of wound covering with a semipermeable membrane, which is provided with an adhesive. Disadvantages of the absordressing dressings is the fact that these dressings make up the woundcan dry, which is disadvantageous for re-epithelialization and wound healing.In contrast, semi-permeable or moisture-impermeable Verwould have the advantage of promoting re-epithelialization of the wound, on the other handthe above-mentioned accumulation of wound secretion often followsgender infection formation. A recently used method of woundTreatment solves this problem by covering the wound with a membranewith the suction hose underneath, which either passes through a branch channelhealthy skin or between the skin and the membrane of the woundleads away. This method, in which wound healing is also likelyis also promoted by the negative pressure acting on the woundthe disadvantage that either healthy tissue is injured and the risk of an infectiontion, or if there is a drainage between the skin and the wound dressing tied an airtight and secretion-tight closure mostly extremely difficult to achieveChen is.

Dieses Problem wird erfindungsgemäß nach Anspruch 1 dadurch gelöst, daß eine Absaugung für Wundsekret in den Verband integriert wird. Durch einen Ventilme­chanismus kann außerdem ein Reflux des Wundsekrets mit aufsteigender Infektion verhindert werden, während der Drainagebehälter gewechselt wird. Darüber hinaus besteht nach Anspruch 8 auch die Möglichkeit, in den Verband auch einen kompletten Absaugmechanismus für Wundsektret zu integrieren.This problem is solved according to the invention in that aSuction for wound secretion is integrated into the dressing. Through a VentilmeMechanism can also cause reflux of the wound secretion with ascending infectionbe prevented while the drainage container is being replaced.In addition, there is also the possibility according to claim 8 in the associationalso to integrate a complete suction mechanism for wound syringe.

Zu weiteren Ausgestaltungen und Merkmalen der Erfindung wird auf die übrigen Unteransprüche sowie auf die nachfolgende Beschreibung und auf die zugehöri­gen Zeichnungen von erfindungsgemäßen Ausführungsmöglichkeiten bezugge­nommen. In den Zeichnungen zeigen, und zwar jeweils in einem Längsschnitt:For further refinements and features of the invention, reference is made to the othersSubclaims as well as the following description and the correspondingreference to drawings of possible embodiments according to the inventiontaken. In the drawings, in each case in a longitudinal section:

Fig. 1 den prinzipiellen Aufbau der Erfindung und seine typische Anwendungs­applikation mit externem Absaugsystem.Fig. 1 shows the basic structure of the invention and its typical application application with an external suction system.

Fig. 2 den prinzipiellen Aufbau des Verbandes mit komplett integrierter Absau­gung von Wundsekret ohne externes Absaugsystem.Fig. 2 shows the basic structure of the dressing with completely integrated suction of wound secretions without an external suction system.

Der Wundverband besteht aus einer luftdichten Membran1, die an ihrer Unter­seite mit einer Adhäsivschicht oder einem Gel2 versehen ist. In der Mitte dieser Membran befindet sich ein vorzugsweise aus einem weichen Elastomer gefertigter Drainagekörper3, welcher an seiner Unterseite multiple Perforationen4 aufweist. Beide Elemente1 und3 sind miteinander funktionell fest verbunden. Die Membran ist mit dem Adhäsiv2 auf der Hautoberfläche5 luftdicht befestigt. Wundsekret6, welches sich unter der Membran ansammelt tritt durch die Perforationen4 in den Drainagekörper3 ein. Über das Ausleitungsstück10, welches ein integriertes Ventil7 haben kann, ist der Drainagekörper3 mit einem Schlauch8 mit einem ex­ternen, nicht dargestellten Unterdrucksystem verbunden. Dieses besteht typi­scherweise aus einem Reservoir für Wundsekret und einer regelbaren Unter­druckpumpe oder aus einem Unterdruck erzeugenden Behälter.The wound dressing consists of an airtight membrane1 , which is provided on its underside with an adhesive layer or a gel2 . In the middle of this membrane is a drainage body3 , preferably made of a soft elastomer, which has multiple perforations4 on its underside. Both elements1 and3 are functionally firmly connected to one another. The membrane is attached to the skin surface5 in an airtight manner with the adhesive2 . Wound secretion6 , which accumulates under the membrane, enters the drainage body3 through the perforations4 . About the diversion piece10 , which may have an integrated valve7 , the drain body3 is connected to a hose8 with an ex-internal vacuum system, not shown. This typically consists of a reservoir for wound secretions and a controllable vacuum pump or a vacuum-producing container.

Bei der Anwendung wird der beschriebene Wundverband über der Wundfläche9 angebracht, und randdicht mit der Hautoberfläche5 verklebt. Nach Anschluß an eine Unterdruckquelle wird Wundsekret6 durch die Perforationen4, den Draina­ gekörper3, das Ausleitungsstück10, sowie das Ventil7 und den Schlauch8 gezo­gen. Bei Ausfall des Unterdrucks oder bei Wechsel des Schlauches8 verhindert das Ventil7, daß Wundsekret oder Luft in die Wunde zurückgezogen wird.In use, the wound dressing described is applied over the wound surface9 and glued to the skin surface5 in an edge-tight manner. After connection to a vacuum source, wound secretion6 is drawn through the perforations4 , the Draina body3 , the diversion piece10 , and the valve7 and the hose8. In the event of a vacuum failure or when the hose8 changes , the valve7 prevents wound secretion or air is drawn back into the wound.

Fig. 2. zeigt ein Beispiel für einen Wundverband mit komplett integrierter Absau­gung wobei jedoch der Unterdruck nicht wie inFig. 1 durch eine externe Saugung erzeugt wird. Der Unterdruck kommt hierbei durch die Expansionstendenz eines zuvor komprimierten Schwammes zustande.Fig. 2. shows an example of a wound dressing with fully integrated suction, however, the negative pressure is not generated by an external suction as inFig. 1. The negative pressure comes from the expansion tendency of a previously compressed sponge.

Über der Membran1, die im Zentrum eine Öffnung20 besitzt, befindet sich ein vorkomprimierter Schwamm21, der von einer expandierbaren luftundurchlässi­gen Membran22 umgeben ist. Unter der Öffnung20 ist eine weitere wasserlösli­che Membran23, vorhanden, welche eine vorzeitige Expansion des Schwammes vor der Anwendung verhindert. Nach Aufbringen des Wundverbandes auf die Wunde9 löst sich die wasserlösliche Membran23 auf, wodurch der durch den Schwamm21 erzeugte Unterdruck auf die Wundfläche wirken kann. Gleichzeitig wird Wundsekret6 in den Schwamm21 hinein gesaugt.Above the membrane1 , which has an opening20 in the center, there is a precompressed sponge21 , which is surrounded by an expandable membrane22 that is air-impermeable. Under the opening20 there is a further water-soluble membrane23 , which prevents the sponge from expanding prematurely before use. After the wound dressing has been applied to the wound9 , the water-soluble membrane23 dissolves, as a result of which the negative pressure generated by the sponge21 can act on the wound surface. At the same time, wound secretion6 is sucked into the sponge21 .

In einem ähnlichen, nicht dargestellten Ausführungsbeispiel erfolgt die Kompres­sion des Schwammes21 erst bei der Applikation des Verbandes, so daß die Ver­wendung einer löslichen Membran9 nicht nötig ist. Hierbei wird beim Anlegen des Verbandes der Schwamm dadurch komprimiert, dass er über der Wundfläche durch Druck auf die expandierbare Membran22 zusammengedrückt wird.In a similar embodiment, not shown, the compression of the sponge21 takes place only when the dressing is applied, so that the use of a soluble membrane9 is not necessary. When applying the dressing, the sponge is compressed in that it is compressed over the wound surface by pressure on the expandable membrane22 .

BezugszeichenlisteReference list

11

Kunststoffmembran,
Plastic membrane,

22nd

Adhäsivschicht
Adhesive layer

33rd

Drainagekörper
Drainage body

44th

Perforationen
Perforations

55

Hautoberfläche
Skin surface

66

Wundsekret
Wound secretion

77

Ventil
Valve

88th

Schlauch
tube

99

Wundfläche
Wound area

1010th

Ausleitungsstück
Diversion piece

1111

Unterhautfettgewebe
Subcutaneous fat tissue

2020th

Öffnung
opening

2121

Vorkomprimierter Schwamm
Pre-compressed sponge

2222

Expandierbare, wasserfeste, luftundurchlässige Membran
Expandable, waterproof, airtight membrane

2323

Wasserlösliche luftundurchlässige Membran
Water-soluble, air-impermeable membrane

Claims (11)

Translated fromGerman
1. Verband bestehend aus einer flexiblen, luftundurchlässigen mit einem Adhäsiv2 versehenen elastischem membranartigen Material1,dadurch gekenn­zeichnet, daß dieser Verband in seinem Zentrum oder auch peripher mit einer in­tegrierten Vorrichtung für Drainage des Wundsekretes oder zur Erzeugung eines Unterdruckes versehen ist, bzw. über diese an ein peripheres Absaugsystem ange­schlossen werden kann.1. Dressing consisting of a flexible, air-impermeable with an adhesive2 elastic membrane-like material1 ,characterized in that this dressing is provided in its center or peripherally with an integrated device for drainage of the wound secretion or for generating a negative pressure, or can be connected to a peripheral suction system.2. Wundverband nach Anspruch 1, dadurch gekennzeichnet, daß das Drainagesystem mit einem Ventil7 versehen ist.2. Wound dressing according to claim 1, characterized in that the drainage system is provided with a valve7 .3. Wundverband nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Adhäsion zur Wundfläche durch eine Gelschicht erzeugt wird, die ein leichte­res Entfernen desselbigen ohne Schädigung des Epithels erlaubt.3. wound dressing according to claim 1 and 2, characterized in thatthe adhesion to the wound surface is generated by a gel layer, which is a lightRes removal of the same allowed without damage to the epithelium.4. Wundverband nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß das Drainagesystem mit einer gerinnungshemmenden Substanz versehen ist und/oder die Wände eine besondere Beschichtung aufweisen, welche Anhaften von Partikeln verhindert.4. wound dressing according to claim 1 to 3, characterized in thatthe drainage system is provided with an anticoagulant substanceand / or the walls have a special coating which adheres toPrevents particles.5. Wundverband nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß der Wundverband mit 2 oder mehr Drainagesystemen versehen ist, die unterein­ander verbunden sein können.5. wound dressing according to claim 1 to 4, characterized in thatthe wound dressing is provided with 2 or more drainage systems, one below the othercan be connected.6. Wundverband nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß er an der zur Wunde liegenden Seite in seinem Zentrum mit einem porösen oder absorbierenden Material verbunden ist.6. wound dressing according to claim 1 to 5, characterized in thathe on the side facing the wound in his center with a porous or absorbent material is connected.7. Wundverband nach Anspruch 1 bis 6, dadurch gekennzeichnet, daß er aus mehreren Teilen besteht, die erst kurz vor der Applikation vom Anwender zusammengebaut werden.7. wound dressing according to claim 1 to 6, characterized in thatIt consists of several parts that are only used by the user shortly before applicationbe assembled.8. Wundverband nach Anspruch 1 bis 7, dadurch gekennzeichnet, daß die gesamte Saugvorrichtung in den Verband integriert ist, z. B. in Form eines vorkomprimierten, sich expandierenden Schwamm, welcher gegebenenfalls von einer wasserlöslichen Membran23 im komprimierten Zustand gehalten werden8. wound dressing according to claim 1 to 7, characterized in that the entire suction device is integrated into the dressing, for. B. in the form of a pre-compressed, expanding sponge, which are optionally held by a water-soluble membrane23 in the compressed state9. Wundverband nach Anspruch 1-8, dadurch gekennzeichnete daß der Ableitungsteil10 über einen Ansatzstutzen zur Applikation von therapeutisch wirksamen Substanzen wie Medikamenten oder Spülflüssigkeiten verfügt.9. Wound dressing according to claims 1-8, characterized in that the derivation part10 has a connecting piece for the application of therapeutically active substances such as medication or rinsing liquids.10. Wundverband nach Anspruch 1-9, dadurch gekennzeichnet, daß der Verband ein mechanisches federndes Element enthält, welches einen Un­terdruck erzeugt. (Saugglockenprinzip).10. Wound dressing according to claims 1-9, characterized in thatthe dressing contains a mechanical resilient element, which has an Unterdruck generated. (Suction cup principle).11. Wundverband nach Anspruch 1-9, dadurch gekennzeichnet, daß der Verband ein mechanisch stabiles Element enthält, welches einer Anlegung an die Wundoberfläche eine Kraft entgegensetzt wodurch eine Formgebung der Wunde ermöglicht wird.11. Wound dressing according to claims 1-9, characterized in thatthe dressing contains a mechanically stable element which is suitable for applicationthe wound surface opposes a force, thereby shaping theWound is made possible.
DE19844355A1998-09-281998-09-28Adhesive wound dressing of flexible, membrane like material penetrable by air comprises integrated device which drains wound secretions or produces reduced pressure, or can be connected to an external suction systemWithdrawnDE19844355A1 (en)

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DE19844355ADE19844355A1 (en)1998-09-281998-09-28Adhesive wound dressing of flexible, membrane like material penetrable by air comprises integrated device which drains wound secretions or produces reduced pressure, or can be connected to an external suction system

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DE19844355ADE19844355A1 (en)1998-09-281998-09-28Adhesive wound dressing of flexible, membrane like material penetrable by air comprises integrated device which drains wound secretions or produces reduced pressure, or can be connected to an external suction system

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