DE202004021898U1 - Vacuum-assisted drainage system - Google Patents

Abstract

Vacuum-assisted drainage system consisting of a porous, liquid-permeable pad (1) for insertion into a wound with an integrated open drainage line (2) located inside the pad (1), which can be connected to a suction pump so that the wound can be sucked can, in order to withdraw liquids from there, characterized in that • a bandage is provided to cover the pad (1) and the wound and to provide a substantially airtight seal around the wound, • the pad (1) with a continuous recess (3) is provided in which an insertable spacer (4) is placed and • a second drainage line (5), which can also be connected to a suction pump, can be passed through the opening of the spacer (4) so that larger, a closure of the pad (1) causing particles from the wound is made possible.

Description

The invention relates to a vacuum-assisted drainage system.

In the case of wound drainage, a distinction is made between direct drainage (drainage tube lying directly in the wound) and sponge-mediated drainage (drainage tube lies in a sponge which lies in the wound).

Direct wound drainage has been known for many decades. Devices for wound drainage using sponges introduced into the wound are based on this prior art and were developed more than 60 years ago.

Thus, for example, the document discloses DE 847 475 a device for the drainage of wounds by means of soft tampons, one with its one end in a tampon from expediently fine-pored and soft elastic natural, rubber, foam rubber, cellulose sponge, gauze, cotton or the like incorporated, open inside the tampon suction line ( or more such lines) is (are) provided. The suction line can be divided over a fork in several branches that lead into the tampon. In addition, in this device even more tubes (flushing lines) for supplying rinsing, disinfecting or healing fluid to the wound may be present.

From the Scriptures DE 696 13 997 T2 For example, there is known a portable wound treatment device comprising a porous, fluid permeable pad for insertion into the wound, a dressing for covering the wound and providing a substantially airtight seal around the wound, a drainage conduit connecting the pad to a suction pump and at least a filter is constructed so that it can be sucked on the wound to withdraw liquids from there, wherein a pressure-detecting device is provided which monitors the pressure substantially at the sore spot.

The disadvantage of all known sponge-mediated wound drainage devices is that the fluid-permeable pad (the sponge) in the wounded state is added and thus clogged by solids that may be present in the fluids resulting in total failure. their drainage effect leads.

The invention has for its object to provide a vacuum-assisted drainage system, which prevents clogging of the fluid-permeable pad (the sponge) and thus ensures a drainage effect, even if the discharged liquids have a solids content.

According to the invention, this object is achieved by the characterizing features of the first patent claim and supplemented by advantageous embodiments according to the subclaims.

The essence of the invention is that the vacuum-assisted drainage system consists of a porous, fluid-permeable pad for insertion into the wound, a bandage covering the pad and wound, and providing a substantially airtight seal around the wound and one in that the pad is constructed with a drainage pipe connecting a suction pump, so that it can be sucked on the wound in order to withdraw liquids therefrom, the pad being provided with a continuous recess in which a spacer is placed and a negative pressure can be generated under the dressing.

Via the recess another drainage line can be inserted into the wound to remove more solid components from the wound.

In order to indicate a possible vascular injury during use of the vacuum-assisted drainage system according to the invention, for example during the night, this drainage system can be provided with a blood detector, for example a spectroscope with optical fiber which opens into the drainage line with its detection end.

The invention will be explained in more detail below with reference to the schematic drawings. It shows:

1 an embodiment of the vacuum-assisted drainage system according to the invention in a schematic plan view

2 the embodiment acc. 1 in a schematic side view

This in 1 and 2 illustrated vacuum-assisted drainage system consists of a porous, fluid-permeable pad ( 1 ) for insertion into a wound, a dressing, not shown in the figure for purposes of clarity, to cover the pad and wound and to provide a substantially airtight seal around the wound; 1 ) with a suction pump connecting drainage line ( 2 ) is constructed so that it can be sucked on the wound to withdraw liquids from there, wherein the pad ( 1 ) with a continuous recess ( 3 ), in which a rigid, tubular, in the recess insertable spacer ( 4 ) is placed.

By this construction, a first drainage path for highly fluid and fluid body secretions, such as lymph, blood or urine, is made possible out of the wound.

Through the opening of the spacer ( 4 ) is a second drainage line ( 5 ) feasible.

Through this drainage line ( 5 ), a second drainage path for solid body secretions, such as feces or pus, out of the wound is made possible if needed.

Particularly advantageous is this spacer ( 4 ) made of plastic and has an inner diameter in a range of 1 to 5 cm, which adapts to the use in this range freely selectable. This selectability can, for example, by different, in the recess ( 3 ) insertable spacers ( 4 ) of different diameters. Alternatively, there is the possibility of positive-locking and sealing in the spacer ( 4 ) insertable, also form-fitting and sealing nestable spacers ( 41 ) 42 ) specify the inner diameter.

The upholstery ( 1 ) is particularly advantageous from a solidified plastic foam with a pore size of 0.3 to 2.5 mm.

This foam may be, for example, a polyurethane foam having a pore size of 0.35 to 2.3 mm or a polyvinyl alcohol foam having a pore size of 0.4 to 2 mm.

Particularly advantageous is the drainage line ( 2 ) provided on its, the pad-facing side with a funnel-shaped extension piece (not shown in the figures) that in one piece as the end of the drainage line ( 2 ) or in two parts can be designed as an attachable part. This extension piece increases the cross-section of the cushion ( 1 ) lying drainage line ( 2 ).

The dressing (not shown in the figures) is particularly advantageously provided with a covering film layer and provided at its edges with an adhesive layer, so that a good air-tight seal is ensured.

The suction pump (not shown in the figures) advantageously produces a vacuum of 50 mm Hg to 375 mm Hg with airtight sealing of the device according to the invention around the wound.

In order to indicate a possible vascular injury during the use of the vacuum-assisted drainage system according to the invention, for example during the night, this drainage system is equipped with a blood detector, for example a spectroscope with optical fiber, with its detection end in the drainage line. 2 ) (for reasons of clarity not shown in the figures), foreseeable.

The invention clogs the fluid-permeable pad ( 1 ), For example, by solids such as feces, so that a drainage effect is also ensured if the discharged liquids have a solids content.

Through the blood detector, it is possible to determine vascular injuries in the wound area during the suction process by means of the vacuum-assisted drainage system according to the invention.

The vacuum-assisted drainage system according to the invention is used, for example, in occlusive wound treatment in the abdominal area for or during fistula separation.

In occlusive wound treatment in the abdominal area, the pad ( 1 ), for example, placed on the intestinal loops, with an alloplastic mesh or a gauze between the pad ( 1 ) and the intestinal loops to prevent fistula formation.

In fistula separation, the pad ( 1 ) positioned over the fistula and the secretions around it over the pad ( 1 ) and the drainage line ( 2 ) sucked off, the drainage line ( 5 ) is brought directly to the fistula to suck directly above it.

Depending on the wound situation, it is recommended that the vacuum-assisted drainage system according to the invention be replaced every 3 to 5 days with a new padding during the dressing change ( 1 ) to provide.

The use of the vacuum-assisted drainage system according to the invention leads, for example, to the closure of complicated abdominal wounds and timely use even in retracted, but not yet with the intestine laterally inflammatory bonded abdominal wall to a complete abdominal wall closure.

The vacuum-assisted drainage system according to the invention is characterized by high care and patient comfort.

LIST OF REFERENCE NUMBERS

1

pad

2

drainage line

3

recess

4

spacer

41 and 42

nestable spacers

5

second drainage line

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 847475 [0004]
• DE 69613997 T2 [0005]

Claims (13)

Vacuum-assisted drainage system consisting of a porous, fluid-permeable cushion ( 1 ) for insertion into a wound with incorporated, inside the pad ( 1 ) located open drainage line ( 2 ), which can be connected to a suction pump, so that it can be sucked on the wound in order to withdraw liquids from there, characterized in that • a dressing to cover the pad ( 1 ) and the wound and to provide a substantially airtight seal around the wound, 1 ) with a continuous recess ( 3 ), in which an insertable spacer ( 4 ) and • a second drainage line ( 5 ), which is also connectable to a suction pump, through the opening of the spacer ( 4 ), so that a suction of larger, a closure of the pad ( 1 ) causing particles from the wound. Vacuum-assisted drainage system according to claim 1, characterized in that the spacer ( 4 ) is rigid and tubular. Vacuum-assisted drainage system according to claim 2, characterized in that spacers ( 4 ) has an inner diameter of 1 to 5 cm. Vacuum-assisted drainage system according to claim 1, characterized in that via form-fitting and sealing in the spacer ( 4 ) insertable, also form-fitting and sealing nestable spacers ( 41 ) 42 ), the inner diameter can be predetermined. Vacuum-assisted drainage system according to claim 1, characterized in that the spacer ( 4 ) consists of plastic. Vacuum-assisted drainage system according to claim 1, characterized in that the pad ( 1 ) consists of a solidified plastic foam with a pore size of 0.3 to 2.5 mm. Vacuum-assisted drainage system according to claim 6, characterized in that the foam is a polyurethane foam having a pore size of 0.35 to 2.3 mm. Vacuum-assisted drainage system according to claim 7, characterized in that the foam is a polyvinyl alcohol foam with a pore size of 0.4 to 2 mm. Vacuum-assisted drainage system according to claim 1, characterized in that a blood detector in the drainage line ( 2 ) opens. Vacuum-assisted drainage system according to claim 9, characterized in that the blood detector consists of an optical fiber spectroscope with its detection end in the drainage line ( 2 ), exists. Vacuum-assisted drainage system according to claim 1, characterized in that the drainage line ( 2 ) has a funnel-shaped extension piece on its, the pad-facing side. Vacuum-assisted drainage system according to claim 11, characterized in that the extension piece is in one piece as the end of the drainage line ( 2 ) is executed. Vacuum-assisted drainage system according to claim 11, characterized in that the extension piece is designed in two parts as an attachable part.

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