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
DE19844355A1 DE19844355A DE19844355A DE19844355A1 DE 19844355 A1 DE19844355 A1 DE 19844355A1 DE 19844355 A DE19844355 A DE 19844355A DE 19844355 A DE19844355 A DE 19844355A DE 19844355 A1 DE19844355 A1 DE 19844355A1
Authority
DE
Germany
Prior art keywords
wound
wound dressing
dressing according
membrane
dressing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19844355A
Other languages
German (de)
Inventor
Rainer E Sachse
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19844355A priority Critical patent/DE19844355A1/en
Publication of DE19844355A1 publication Critical patent/DE19844355A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/02—Adhesive plasters or dressings
    • A61F13/0203—Adhesive plasters or dressings having a fluid handling member
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/91—Suction aspects of the dressing
    • A61M1/915—Constructional details of the pressure distribution manifold
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/98—Containers specifically adapted for negative pressure wound therapy
    • A61M1/984—Containers specifically adapted for negative pressure wound therapy portable on the body
    • A61M1/985—Containers specifically adapted for negative pressure wound therapy portable on the body the dressing itself forming the collection container
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00089—Wound bandages
    • A61F2013/0017—Wound bandages possibility of applying fluid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F2013/00361—Plasters
    • A61F2013/00365—Plasters use
    • A61F2013/00412—Plasters use for use with needles, tubes or catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/96—Suction control thereof
    • A61M1/962—Suction control thereof having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains

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

Die Aufgabe eines Wundverbandes besteht im Schutz der Wunde vor Verschmut­ zung 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 wei­ tere Funktion eines Wundverbandes ist es dabei, die Wunde möglichst vor chemi­ schen und mechanischen Einflüssen zu schützen und andererseits eine Ver­ schmutzung der Umgebung durch Wundsekret zu verhindern. -The task of a wound dressing is to protect the wound from dirt External contamination and contamination and design of one for wound healing favorable milieus. It is beneficial if there is excess wound secretion can be removed from the wound, as these accumulate well due to substrate accumulation Provide breeding ground for infection and promote wound infections. - A white Another function of a wound dressing is to protect the wound from chemi to protect against mechanical and mechanical influences and on the other hand a ver to 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 semi­ permeablen Membran, die mit einem Adhäsiv versehen ist. Nachteile der absor­ bierenden Verbände ist dabei die Tatsache, daß diese Verbände die Wunde aus­ trocknen können, was für die Reepithelisierung und Wundheilung von Nachteil ist. Im Gegensatz dazu haben semi-permeable oder feuchtigkeits-undurchlässige Ver­ bände den Vorteil, daß sie eine Reepithelisierung der Wunde fördern, andererseits kommt es oft zu der oben erwähnten Akkumulation von Wundsekret mit darauffol­ gender Infektionsbildung. Eine in jüngerer Zeit angewandte Methode der Wund­ behandlung 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 Infek­ tion ausgesetzt wird, oder bei Ableitung zwischen der r Haut und dem Wundver­ band ein luft- und sekretdichter Abschluß meistens nur extrem schwer zu errei­ chen ist.A very large number of different wound dressings were made during the course developed over time, starting from osmotically active associations such as honey or Peru balsam, which may have been covered with an absorbent material until towards the currently most modern concept of wound covering with a semi permeable membrane, which is provided with an adhesive. Disadvantages of the absor dressing dressings is the fact that these dressings make up the wound can dry, which is disadvantageous for re-epithelialization and wound healing. In contrast, semi-permeable or moisture-impermeable Ver would have the advantage of promoting re-epithelialization of the wound, on the other hand the above-mentioned accumulation of wound secretion often follows gender infection formation. A recently used method of wound Treatment solves this problem by covering the wound with a membrane with the suction hose underneath, which either passes through a branch channel healthy skin or between the skin and the membrane of the wound leads away. This method, in which wound healing is also likely is also promoted by the negative pressure acting on the wound the disadvantage that either healthy tissue is injured and the risk of an infection tion, or if there is a drainage between the skin and the wound dressing  tied an airtight and secretion-tight closure mostly extremely difficult to achieve Chen is.

Dieses Problem wird erfindungsgemäß nach Anspruch 1 dadurch gelöst, daß eine Absaugung für Wundsekret in den Verband integriert wird. Durch einen Ventilme­ chanismus 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 a Suction for wound secretion is integrated into the dressing. Through a Ventilme Mechanism can also cause reflux of the wound secretion with ascending infection be prevented while the drainage container is being replaced. In addition, there is also the possibility according to claim 8 in the association also 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 zugehöri­ gen Zeichnungen von erfindungsgemäßen Ausführungsmöglichkeiten bezugge­ nommen. In den Zeichnungen zeigen, und zwar jeweils in einem Längsschnitt:For further refinements and features of the invention, reference is made to the others Subclaims as well as the following description and the corresponding reference to drawings of possible embodiments according to the invention taken. In the drawings, in each case in a longitudinal section:

Fig. 1 den prinzipiellen Aufbau der Erfindung und seine typische Anwendungs­ applikation 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 Absau­ gung 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 Membran 1, die an ihrer Unter­ seite mit einer Adhäsivschicht oder einem Gel 2 versehen ist. In der Mitte dieser Membran befindet sich ein vorzugsweise aus einem weichen Elastomer gefertigter Drainagekörper 3, welcher an seiner Unterseite multiple Perforationen 4 aufweist. Beide Elemente 1 und 3 sind miteinander funktionell fest verbunden. Die Membran ist mit dem Adhäsiv 2 auf der Hautoberfläche 5 luftdicht befestigt. Wundsekret 6, welches sich unter der Membran ansammelt tritt durch die Perforationen 4 in den Drainagekörper 3 ein. Über das Ausleitungsstück 10, welches ein integriertes Ventil 7 haben kann, ist der Drainagekörper 3 mit einem Schlauch 8 mit einem ex­ ternen, nicht dargestellten Unterdrucksystem verbunden. Dieses besteht typi­ scherweise aus einem Reservoir für Wundsekret und einer regelbaren Unter­ druckpumpe oder aus einem Unterdruck erzeugenden Behälter.The wound dressing consists of an airtight membrane 1 , which is provided on its underside with an adhesive layer or a gel 2 . In the middle of this membrane is a drainage body 3 , preferably made of a soft elastomer, which has multiple perforations 4 on its underside. Both elements 1 and 3 are functionally firmly connected to one another. The membrane is attached to the skin surface 5 in an airtight manner with the adhesive 2 . Wound secretion 6 , which accumulates under the membrane, enters the drainage body 3 through the perforations 4 . About the diversion piece 10 , which may have an integrated valve 7 , the drain body 3 is connected to a hose 8 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 Wundfläche 9 angebracht, und randdicht mit der Hautoberfläche 5 verklebt. Nach Anschluß an eine Unterdruckquelle wird Wundsekret 6 durch die Perforationen 4, den Draina­ gekörper 3, das Ausleitungsstück 10, sowie das Ventil 7 und den Schlauch 8 gezo­ gen. Bei Ausfall des Unterdrucks oder bei Wechsel des Schlauches 8 verhindert das Ventil 7, daß Wundsekret oder Luft in die Wunde zurückgezogen wird.In use, the wound dressing described is applied over the wound surface 9 and glued to the skin surface 5 in an edge-tight manner. After connection to a vacuum source, wound secretion 6 is drawn through the perforations 4 , the Draina body 3 , the diversion piece 10 , and the valve 7 and the hose 8. In the event of a vacuum failure or when the hose 8 changes , the valve 7 prevents wound secretion or air is drawn back into the wound.

Fig. 2. zeigt ein Beispiel für einen Wundverband mit komplett integrierter Absau­ gung wobei jedoch der Unterdruck nicht wie in Fig. 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 in Fig. 1. The negative pressure comes from the expansion tendency of a previously compressed sponge.

Über der Membran 1, die im Zentrum eine Öffnung 20 besitzt, befindet sich ein vorkomprimierter Schwamm 21, der von einer expandierbaren luftundurchlässi­ gen Membran 22 umgeben ist. Unter der Öffnung 20 ist eine weitere wasserlösli­ che Membran 23, vorhanden, welche eine vorzeitige Expansion des Schwammes vor der Anwendung verhindert. Nach Aufbringen des Wundverbandes auf die Wunde 9 löst sich die wasserlösliche Membran 23 auf, wodurch der durch den Schwamm 21 erzeugte Unterdruck auf die Wundfläche wirken kann. Gleichzeitig wird Wundsekret 6 in den Schwamm 21 hinein gesaugt.Above the membrane 1 , which has an opening 20 in the center, there is a precompressed sponge 21 , which is surrounded by an expandable membrane 22 that is air-impermeable. Under the opening 20 there is a further water-soluble membrane 23 , which prevents the sponge from expanding prematurely before use. After the wound dressing has been applied to the wound 9 , the water-soluble membrane 23 dissolves, as a result of which the negative pressure generated by the sponge 21 can act on the wound surface. At the same time, wound secretion 6 is sucked into the sponge 21 .

In einem ähnlichen, nicht dargestellten Ausführungsbeispiel erfolgt die Kompres­ sion des Schwammes 21 erst bei der Applikation des Verbandes, so daß die Ver­ wendung einer löslichen Membran 9 nicht nötig ist. Hierbei wird beim Anlegen des Verbandes der Schwamm dadurch komprimiert, dass er über der Wundfläche durch Druck auf die expandierbare Membran 22 zusammengedrückt wird. In a similar embodiment, not shown, the compression of the sponge 21 takes place only when the dressing is applied, so that the use of a soluble membrane 9 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 membrane 22 .

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)

1. Verband bestehend aus einer flexiblen, luftundurchlässigen mit einem Adhäsiv 2 versehenen elastischem membranartigen Material 1, dadurch gekenn­ zeichnet, daß dieser Verband in seinem Zentrum oder auch peripher mit einer in­ tegrierten Vorrichtung für Drainage des Wundsekretes oder zur Erzeugung eines Unterdruckes versehen ist, bzw. über diese an ein peripheres Absaugsystem ange­ schlossen werden kann.1. Dressing consisting of a flexible, air-impermeable with an adhesive 2 elastic membrane-like material 1 , 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 Ventil 7 versehen ist.2. Wound dressing according to claim 1, characterized in that the drainage system is provided with a valve 7 . 3. Wundverband nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Adhäsion zur Wundfläche durch eine Gelschicht erzeugt wird, die ein leichte­ res Entfernen desselbigen ohne Schädigung des Epithels erlaubt.3. wound dressing according to claim 1 and 2, characterized in that the adhesion to the wound surface is generated by a gel layer, which is a light Res 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 that the drainage system is provided with an anticoagulant substance and / or the walls have a special coating which adheres to Prevents particles. 5. Wundverband nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß der Wundverband mit 2 oder mehr Drainagesystemen versehen ist, die unterein­ ander verbunden sein können.5. wound dressing according to claim 1 to 4, characterized in that the wound dressing is provided with 2 or more drainage systems, one below the other can 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 that he 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 that It consists of several parts that are only used by the user shortly before application be 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 Membran 23 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 membrane 23 in the compressed state 9. Wundverband nach Anspruch 1-8, dadurch gekennzeichnete daß der Ableitungsteil 10 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 part 10 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 Un­ terdruck erzeugt. (Saugglockenprinzip).10. Wound dressing according to claims 1-9, characterized in that the dressing contains a mechanical resilient element, which has an Un terdruck 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 that the dressing contains a mechanically stable element which is suitable for application the wound surface opposes a force, thereby shaping the Wound is made possible.
DE19844355A 1998-09-28 1998-09-28 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 Withdrawn DE19844355A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19844355A DE19844355A1 (en) 1998-09-28 1998-09-28 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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19844355A DE19844355A1 (en) 1998-09-28 1998-09-28 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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