DE202009013982U1 - Flat drainage for wound treatment - Google Patents

Abstract

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 flat drainage consists of two film-like flexible layers (1), (2) with Labyrinthwegen (18) and through a central opening (7) and recess (20) with a tail (11) and a suction hose (10) is integrally connected.

Description

The The invention relates to a flat drainage, which is different for Forms of wound treatment can be used, in particular however, for the vacuum wound treatment of large and deep wounds is designed.

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 requires a relatively high Manufacturing effort and on the other hand, 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.

In the WO 2008/13 18 95 A1 is a flat drainage as a labyrinth with a flange and suction hose provided. However, this contacts the wound edge with the flange, thus hindering healing.

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 Flat drainage effect a more effective drainage effect than it allow drainages known in the art. In particular, the proposed flat 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 in that a flat drainage consists of a wound-away first foil-like flexible layer and a second, wound-facing flexible layer, wherein a plane is provided between both said layers, which space the first and second layers from each other, even under negative pressure, such that labyrinth paths are introduced between spaced-apart means are formed on the upper layer through a central opening, the secretion can be sucked through a narrow labyrinth through a suction tube. In the particularly preferred embodiment, the first layer is provided with a central opening and the second with perforations. In a further embodiment of the invention which is particularly preferred for practical use, the first and second layers and the means which space them are made of an optically transparent material, at least in the wound area to be detected by them.

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 a flat drainage in the lateral section

2 A first embodiment of a flat drainage in plan view

3 : one after 1 extended embodiment of a flat drainage in the lateral section.

1

flexible layer

2

flexible layer

3

adhesive film

4

perforation

5

wound liner

6

wound

7

opening

8th

duct tape

9

connection

10

suction hose

11

tail

12

Weld

13

injecting tube

14

Zuspritzschwanz

15

flow of secretion

16

pump

17

shutter

18

labyrinth paths

19

medium

20

recess

21

So-called

22

skin

23

Zuspritzöffnung

The invention is based on the basic principle first on the basis of 1 and 2 described in more detail.

Here are from mentioned 1 and 2 the most essential functional components for the flat drainage according to the invention, namely a wound-away first foil-like flexible layer ( 1 ) and a second, wound-facing flexible layer ( 2 ). Between these two layers is provided a plane containing both layers ( 1 ) 2 ) are spaced apart from each other, even when subjected to negative pressure, in such a way that between these in-plane spacing means (FIG. 19 ) Labyrinth routes ( 18 ) are formed and in the, the wound ( 6 ) facing layer ( 2 ) Perforations ( 4 ) are incorporated.

In the upper flexible layer ( 1 ) is an opening ( 7 ) incorporated with the recess ( 20 ) in the tail ( 11 ) connected is.

The tail ( 11 ) is also designed as a flat drainage double and between the layers with a suction hose ( 10 ) connected.

With the help of an adhesive tape ( 8th ) is the tail ( 11 ) in half on the upper layer with a compound ( 9 ) connected cohesively. The tail ( 11 ) is overlapped by a weld ( 12 ) closed, so that at a suction ( 21 ) the secretion flow ( 15 ) from the wound ( 6 ) through the wound insert ( 5 ), the perforation ( 4 ), the maze ( 18 ), the opening ( 7 ) and the recess ( 20 ), by the tail ( 11 ) and the suction hose ( 10 ) into the secretion tank of the pump ( 16 ) he follows.

Due to the central cohesive connection of the tail ( 11 ) can be left and right an adhesive film ( 3 ) onto the skin ( 22 ) are glued.

Because the spacing means (FIG. 19 ) formed labyrinth paths ( 18 ) open laterally in the plane to the outside, can when applying a negative pressure to the suction hose ( 10 ), with full-surface sealing of the device against the skin of the patient, even in this embodiment, a sufficient suction effect of wound fluid done. To improve and especially to homogenize the suction effect, as in 1 at least in the second, wound-facing layer ( 2 ) Perforations / breakthroughs ( 4 ) leading into the plane with the labyrinth paths ( 18 ) keep in touch. Depending on the type of connection of the Tail ( 11 ) it may be appropriate to use the perforations ( 4 ) or breakthroughs with increasing distance from the opening ( 7 ) to be distributed more densely. The advantage of this flat drainage is that a large wound surface can be sucked off and that the area-like labyrinth allows a wound-appropriate adaptation by cutting the flat drainage.

The 3 shows the application of the same flat drainage 1 when using a Zuspritzschwanzes ( 14 ) with an injection hose ( 13 ) and a closure ( 17 ) for the injection of liquids or gases through the injection opening ( 23 ).

In the same way, for all embodiments of the invention described above, the following applies:
the spacing means ( 19 ) 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 ( 19 ) advantageously positive and / or material integral part of the first and / or second layer ( 1 ) 2 ) be. In particular, pimples can be formed by elastic, self-contained air cushions (comparable to air cushion foils known from packaging materials which comprise a first, second, flexible layer in a unitary manufacturing process, but which contain spaced nub-like air cushion areas).

A Such an embodiment shows the advantages of this particular preferred embodiment with regard to the optical Transparency, flexibility and weight Ease of a flat drainage thus produced. As part of the Invention, the aforementioned nubs and / or webs are preferred made of a hydrophobic material on a film.

Also, the spacing means ( 19 ) be formed by a loosely sprinkled foam granules with closed pores, wherein the connection to the adjacent layers ( 1 ) 2 ) can be done, for example, by gluing or welding. Such individual foam granulate particles should also preferably consist of a hydrophobic material.

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]
• WO 2008/131895 A1 [0011]

Claims (14)

Flat drainage for wound treatment, in particular for vacuum wound treatment of large and deep wounds with the simultaneous use of conventional airtight wound coverings, drainage tubes and Vakuumabsaugvorrichtungen, characterized in that the flat drainage of two film-like flexible layers ( 1 ) 2 ) with labyrinth paths ( 18 ) and through a central opening ( 7 ) and recess ( 20 ) with a tail ( 11 ) and a suction hose ( 10 ) is integrally connected. Flat drainage according to claim 1, characterized in that the layers ( 1 ) 2 ) and containing them the spaced means ( 19 ), at least one-sided or two-sided in the form of a tail ( 11 ), in the front side of the suction hose ( 10 ) or injection hose ( 13 ) engages circumferentially sealed. Flat drainage according to claim 1, characterized in that the planar formation of the layers ( 1 ) 2 ) and the means ( 19 ) are designed so large that they can be cut together to the actual wound size and shape. Flat drainage according to claim 1, characterized in that the tail ( 11 ) and the first flexible layer ( 1 ) with each other via the opening ( 7 ) and recess ( 20 ) are connected airtight. Flat drainage according to claim 1, characterized in that at least the second layer ( 2 ) with perforations ( 4 ) with the labyrinth paths ( 18 ) keep in touch. Flat drainage according to claim 1, characterized in that the second layer ( 2 ) with perforations ( 4 ), which is exclusively outside the area of the tail ( 11 ) with the labyrinth paths ( 18 ) keep in touch. Flat drainage according to claim 1, characterized in that said perforations ( 4 ) unevenly over the second layer ( 2 ) are arranged distributed. Flat drainage according to claim 1, characterized in that the perforations ( 4 ) in the second layer ( 2 ) with increasing distance from the suction hose ( 10 ) are provided more densely distributed. Flat drainage according to claim 1, characterized in that the spacing means ( 19 ) are formed by knobs and / or webs, which preferably consist of a hydrophobic material. Flat drainage according to claim 1, characterized in that the spacing means (10) formed by knobs and / or webs ( 19 ) form-fitting and / or cohesive constituent of the first and / or second layer ( 1 ) 2 ) are. Flat drainage according to claim 1, characterized in that the nubs or means ( 19 ) are formed by elastic in each case closed air cushion. Flat drainage according to claim 1, characterized in that a tail ( 11 ) with the central opening ( 7 ) in the first flexible layer ( 1 ) cohesively with a compound ( 9 ) connected is. Flat drainage according to claim 1, characterized in that an injection tail ( 14 ) with an injection opening ( 23 ) in the flexible layer ( 1 ) cohesively with a compound ( 9 ) connected is. Flat drainage according to claim 1, characterized in that the injection hose ( 13 ) with a closure ( 17 ) is provided.