DE202020004857U1 - Labyrinth strand drainage - Google Patents

Abstract

Labyrinth cord drainage for the drainage and suction of wound exudate (7) and body fluids from wounds in humans or animals, characterized in that drainage cords (8) with a contrast cord (12), through a fastening (10) with a suction tube ( 3) connected to form a labyrinth in a drain line (1) to drain wound exudate (7) and body fluids.

Description

The invention describes a drainage device as a flexible, flat anti-pressure point drain with a film covering in which capillary strands are embedded, which in turn prevent collapse under negative pressure to suck off wound exudate and, thanks to their flexibility, avoid pressure points when the body is lying on the floor.

It is a common task in medicine to suction off wound fluids. In particular, in the case of deep, large and, in particular, infected surface wounds, the usual practice to date is to insert a wound pad into the wound that does not grow together with the tissue. The doctor applies a first layer of gauze to this wound pad, into which a drainage tube, sometimes wound several times, is placed by hand and this is again covered with a second layer of gauze and then the entire wound site is stuck 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 duration of the time required to move the means described above, this procedure also requires considerable skill on the part of the doctor treating the wound, because all separately inserted device components have to be fixed during wound care, which often cannot be done by one person alone.

Another type of wound dressing that has been developed in particular for vacuum wound treatment is, for example, in DE 601 18 546 described.
The wound dressing described there, on the one hand, requires a relatively high manufacturing cost and, on the other hand, cannot easily be adapted to different wound sizes. In order to carry out a vacuum treatment, this solution requires, on the other hand, further, relatively complex additional conditions and usually bell-like closures on the wound, to which an external vacuum connection is attached.
Such designs, which protrude far beyond the surface of the skin, considerably restrict the patient's freedom of movement and also generate uncomfortable additional pressure loads.

The above-outlined treatment of such wounds under negative pressure is a method that has been practiced for many years and that has a positive effect on the healing of even deep and large wounds through permanent wound irritation. 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 only be made here.

In addition, there are a number of other solutions, which are only listed here as examples because they concern technical solutions that are further away. So it's over US 6,695,824 B2 a wound dressing covering for external flat wounds is known, which consists of two layers, the first layer being placed directly on the wound and the second layer having an outwardly acting moisture barrier.

A plurality of hose-like supply lines are provided between the layers mentioned, which ensure that the wound is supplied with moisture.

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 aforementioned wound dressing cover is not designed and also not suitable because a vacuum-tight lead out of the sometimes multiple tubes from the wound area is practically impossible.
The same applies to various devices for suctioning wound secretions from body cavities, such as in EP 1 764 127 A1 described.

Furthermore, in the EP 2008/003251 a surface drainage with a drainage tail described.

The present invention is based on the object of developing a labyrinth cord drainage through which wound exudate can be sucked off by means of a vacuum inside and outside of a wound without the drainage collapsing and a wound exudate congestion forming.
Furthermore, the drainage should be flexible, soft and flat and, thanks to its labyrinth, should not create any pressure points when a body is resting on it.

The invention is explained in more detail below with reference to schematic drawings. The main claim and the secondary claims characterize the invention and are an integral part of it.

• 1: einen Drain-Strang mit Perforationen
• 2: einen Drain-Strang mit Saugöffnung
• 3: einen Drain-Strang mit Mehrfach-Strang
• 4: einen Drain-Strang mit 4-fach Strang
• 5: einen Drain-Strang mit doppeltem Doppelstrang
• 6: einen Drain-Strang mit Labyrinth-Einlage
• 7: die Anwendung eines Drain-Stranges.

Show it:

• 1 : a drain string with perforations
• 2 : a drain line with suction opening
• 3 : a drain string with multiple strings
• 4th : a drain line with 4-way line
• 5 : a drain line with a double double line
• 6 : a drain line with a labyrinth insert
• 7th : the use of a drain string.

List of reference symbols

1 =

Drain strand

2 =

perforation

3 =

Suction hose

4 =

Hose clamp

5 =

Pump connection

6 =

Vacuum source

7 =

Exudate

8 =

Drainage lines

9 =

Slant

10 =

Attachment

11 =

cut

12 =

Contrast strand

13 =

Handle

14 =

Protective film

15 =

Adhesive layer

16 =

opening

17 =

Double strand

18 =

Multiple strands

19 =

4-fold strand

20 =

double double strand

21 =

Drainage insert

22 =

Wound filling

23 =

wound

24 =

Wound film

25 =

mark

The 1 describes a drain string ( 1 ) with embedded drainage strands ( 8th ) on the slope ( 9 ) of the suction hose ( 3 ) in a fixture ( 10 ) are locked.
The drainage lines ( 8th ) are with a drain line ( 1 ) covered and through a cut ( 11 ) can be cut to length.
In the open drain line ( 1 ) are perforations ( 2 ) for suction of exudate ( 7th ) incorporated.
So that when the drain string is embedded ( 1 ) a localization is possible in the closed wound area, a contrast strand ( 12th ) inserted.
The exudate ( 7th ) passes through the perforation ( 2 ), the suction hose ( 3 ) with hose clamp ( 4th ) and pump connection ( 5 ) to the vacuum source ( 6 ).
By incorporating drainage strands ( 8th ) a very flat, elastic drainage is possible, which on the one hand avoids pressure points when the body is lying on the ground and on the other hand it avoids collapse under vacuum.
Markings ( 25th ) allow an exact placement of the drain string ( 1 ) in the wound ( 23 ).

In the 2 a closed drain string ( 1 ) with an opening ( 16 ) shown for suctioning wound exudate.
When using the protective film ( 14th ) using a handle ( 13 ) from the adhesive layer ( 15th ) removed so that the opening ( 16 ) is exposed.
A double strand ( 17th ) is attached to the suction hose ( 3 ) and in the drain line ( 1 ) incorporated.
The exudate ( 7th ) is under vacuum by a vacuum source ( 6 ), through the opening ( 16 ), through the double strand ( 17th ) and the suction hose ( 3 ) sucked.

The 3 shows the application of multiple strands ( 18th ) that form a labyrinth in the bundle.

The 4th shows the application of a 4-fold line ( 19th ) through a slit in the suction hose ( 3 ) and forms a labyrinth with four strands.

The 5 shows the application of a double double strand ( 17th ) by slitting two embedded suction hoses ( 3 ).

The 6 shows the use of drainage cords ( 8th ), which in the drain line ( 1 ) with a drainage insert ( 21st ) are coated.

The use of a drain string ( 1 ) is in the 7th shown.
Wound ( 23 ) and wound filling ( 22nd ) are covered with a wound film ( 24 ) taped off.
The drain line ( 1 ) is above the opening ( 16 ) by means of an adhesive layer ( 15th ) connected.
The wound exudate ( 7th ) is powered by a vacuum source ( 6 ) through the wound filling ( 22nd ), through the opening ( 16 ), through the labyrinth of drainage lines ( 8th ) as well as through the suction hose ( 3 ) sucked off.
Due to the embedding of drainage strands ( 8th ), which flexibly form a flat labyrinth, avoids pressure points when a body is on top and collapsing in a vacuum.

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was 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.

Patent literature cited

• DE 60118546 [0003]
• DE 69425881 T3 [0004]
• DE 69229940 T2 [0004]
• DE 69224847 T3 [0004]
• US 6695824 B2 [0005]
• EP 1764127 A1 [0007]
• EP 2008/003251 [0008]

Claims (13)

Labyrinth cord drainage for the drainage and suction of wound exudate (7) and body fluids from wounds in humans or animals, characterized in that drainage cords (8) with a contrast cord (12), through a fastening (10) with a suction tube ( 3) connected to form a labyrinth in a drain line (1) to drain wound exudate (7) and body fluids. Labyrinth strand drainage after Claim 1 , characterized in that the drainage strands (8) are formed from the suction hose (3). Labyrinth strand drainage after Claim 1 , characterized in that the drainage strands (8) made of solid material are locked with the suction hose (3) in a fastening (10). Labyrinth strand drainage after Claim 1 , characterized in that a radiopaque contrast strand (12) is embedded in the drain strand (1). Labyrinth strand drainage after Claim 1 , characterized in that the drainage strands (8) consist of surgical suture material. Labyrinth strand drainage after Claim 1 , characterized in that the contrast strand (12) consists of metal. Labyrinth strand drainage after Claim 1 , characterized in that the drainage strands (8) are sheathed with a labyrinth drainage insert (21). Labyrinth strand drainage after Claim 1 , characterized in that the drain strand (1) has an opening (16) without perforation (2). Labyrinth strand drainage after Claim 1 , characterized in that the drain strand (1) is open at the end and is provided with perforations (2). Labyrinth strand drainage after Claim 1 , characterized in that markings (25) are applied to the drain strand (1). Labyrinth strand drainage after Claim 1 , characterized in that the suction hose (3) is designed with a slope (9) for better exudate drainage. Labyrinth strand drainage after Claim 1 , characterized in that the drainage strands (8) consist of a flexible metal. Labyrinth strand drainage after Claim 1 , characterized in that the metal drainage strands (8) are sheathed.

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