DE102011114266A1 - Wound water suction system has wound pad that is connected with vacuum source such as single-use redon bottle via hose system for wound water suction - Google Patents

Abstract

The wound water suction system has air-tight, liquid-permeable compressed or foamed wound pad (1) which is non-subcutaneously covered on the wound using adhesive tape (2). The wound pad is connected with a vacuum source (5) such as single-use redon bottle via a hose system (3a) for wound water suction.

Description

The invention relates to a wound suction system with a largely airtight with a liquid-permeable, provided with compress or foam body wound closure, which is connected via a hose system for Wundwasserabsaugung with a vacuum source, according to the preamble of claim 1.

The abovementioned Wundabsaugsysteme with a largely airtight wound cover and a vacuum pump are widely known. They serve to promote wound healing and prevent re-infections, especially in post-operative applications. Wound coverings that produce a sterile airtight closure of the wound are, for example, from the EP 0 777 504 B1 known. There, a type of sponge or a wound-permeable compress is applied to the wound and closed with a large-area adhesive pad. The sponge or the compress itself is connected via a sealed, outward hose to a portable vacuum pump. Both known systems, ie wound cover and electric vacuum pump are adapted to each other and also in widespread use.

Entire systems of this type are complex and expensive because the vacuum pump has to be controlled or regulated consuming. Another disadvantage is that the availability of such a wound covering system depends solely on how many electric vacuum pumps, for example, a hospital has available. This can lead to bottlenecks in the availability of such systems, especially in the case of accidents and time accumulations of emergency operations. The actual wound covering system is usually in stock, but the number of available electric vacuum pumps and / or related electrical controls is limited.

The invention is therefore based on the object of further developing a wound suction system for such known wound dressings, that the use of entrained electric vacuum pumps is superfluous, and thus the ad hoc availability of such wound suction systems is almost unlimited.

The object is achieved in a Wundabsaugsystem of the generic type according to the invention by the characterizing features of claim 1.

Further advantageous embodiments are specified in the dependent claims.

The core of the invention is that for creating an external, non-subcutaneous wound closure, the vacuum source is a pump-drive-free vacuum bottle. It is important that the subcutaneous wound suction, so the laying of a so-called subcutaneous drainage with the help of vacuum bottles according to the Redon technique, ie without electric pump was known.

So far, however, it has been assumed that only a subcutaneous installation of a drainage for this purpose is sufficiently tight, because the Redon-Unterduckflaschen have no pumps, but they have only until use, so to speak, sealed vacuum.

So are Redon bottles, as they say from the EP 0 191 851 have been known to have been in use with subcutaneous drainage. Redon bottles are therefore since the o. G state of the art, so known for more than 25 years. Active electromotive pumps for external use, ie non-subcutaneous wound drainage, have been known for a long time.

Thus, there was a long felt need to solve the problem of not using electric pumps when applying external wounds with applied sponges and fleece. This problem was unresolved over more than 20 years.

There, the invention starts with the surprising finding that externally applied, ie not subcutaneous wound suction systems can be operated with such a Redon vacuum bottle instead of an electromotive pump. One would rather expect that externally applied wound suction devices are not tight enough to be able to aspirate with a vacuum bottle.

Surprisingly, this succeeds in the manner according to the application, with which a long-felt need has been satisfied.

In a further advantageous embodiment, it is provided that the vacuum bottle is a disposable vacuum bottle. This ensures a maximum of sterility, which supports wound healing.

In a further advantageous embodiment, it is stated that the vacuum bottle is a vacuum bottle according to the Redon technique. Since such vacuum bottles are easily available, they need only be adapted to the Wundabsaugsystem line.

In a further advantageous embodiment is therefore intended that the gas-tight Connectability of the vacuum bottle with the airtight outer wound closure a hose adapter is provided, which is provided with at least one inner cone, such that it can be plugged with the release of a maximum flow cross-section at least on one side to a hose. In a conventional hose connector, which is provided with externally arranged olives or the like, the hose is plugged onto nozzle sections of the connector. Ie. the passage cross-section is reduced at this connector location. That would be bad for the use of the invention. Instead, said inner cone is pushed onto the tube. The cross-section of the hose is thereby NOT reduced according to the invention advantageously in the passage cross-section. This is important for a fluidically undisturbed passage of the extracted wound water.

In a further advantageous embodiment, it is stated that the cone is dimensioned in length and diameter gradient so that it can be variably attached to a multiplicity of conventional hose outer diameters.

Furthermore, it is advantageously configured that the adapter is multi-part and is provided at least on one side with a pinch-seal connection. So one page can already be prepared, and then with the other side the final hose connection described above between wound closure and Redon vacuum bottle can be created very quickly.

For sterile use is therefore provided that the adapter is made of sterilizable plastic. As a result of the fact that the adapter is pushed on, in this handling of the adapter according to the invention, the inner cone surface which is essential in sterile respect is not touched at all, not even accidentally.

Advantageously, it is provided that the adapter consists of silicone.

Furthermore, it is configured that the adapter is integrated directly on the vacuum port of the Redon bottle. This ensures an even easier handling.

In the last advantageous embodiment is stated that the adapter is provided at both ends with two opposing Konii for receiving both sides of hose sections. So any hoses and diameters can be adapted without a flow gradient forms by narrowing the inner diameter at the junction.

The invention is illustrated in the drawing and explained in more detail below.

It shows:

1 : Basic representation of the components used

2 : Sectional view through the adapter

3 : Sectional view through adapter

4 : State of the art

1 shows a schematic representation of the Wundabsaugsystems invention. Position number 1 shows the application system of the externally, so not subcutaneously applied to the wound wound cover, already with an airtight transition from a kind of pad on a suction tube 3 ( 3a ) shows. Below the as a round Abdeckpad 1 designated cover is a sterile, liquid-permeable compress or sponge applied to the wound. To put the whole system airtight on the skin around the wound, the pad can 1 again by a larger adhesive film 2 covered and sterile and sealed airtight. At the pad 2 is a liquid-compatible, outwardly airtight transition into the hose 3 or the hose section 3a given. Such a wound covering system is known. It is also known that on the wound under the pad 2 to suck off forming wound water with an electromotive pump, which temporarily generates negative pressure and thus sucks up the wound water. According to the invention, however, a so-called Redon vacuum bottle is now connected to this system 5 by means of an adapter adapter 4 connected as a vacuum source, quasi connected as a suction pump. Such a Redon vacuum bottle is, so to speak, a one-way vacuum volume. Up to now, however, Redon vacuum bottles have only been used for subcutaneous wound suction systems, because only small, vacuumed bottles of red blood bottles can overcome any leaks. Ie. if the Redonflaschenvolume is vented, then no more suction arises in a row. As a result, only subcutaneously applied wound water connections were correspondingly tight.

With the help of a multi-layer wound covering system, however, it is also possible to achieve sufficient tightness even with external wound application that the Redon vacuum bottle, which is much easier to handle than motor pumps, can now be used. For this purpose, an adapter according to the invention 4 used the hose sections 3a and 3b air-tight, ie, leak-free, in such a way that no diameter shrinkage forms there.

The hose section 3b is then leakproof with the Redon vacuum bottle 5 connected. The vacuum bottle 5 it still contains a bellows 7 for a qualitative indication of the pressure conditions in the redone bottle 5 , that is, whether there is enough negative pressure for suction. With a carrying eye 8th can the redon bottle 5 be worn on the body. The hose connection 6 on the Redon bottle can be a prefabricated Crushed seal, so that a leak-free connection of the hose to the Redonflasche 5 is possible.

But it is also possible that the adapter 4 already at the Redon bottle instead of the connection 5 with integrated.

2 shows the adapter 4 with its features according to the invention, important for this application. The adapter 4 has at least one inner cone opening at least to one side 4a on.

In the right part of the picture it is stated that the hose section 3b For example, is already prefabricated to a prefabricated adapter hose transition by means of a pressed leak-tight connection. In the left part of the picture is the detachable connection between adapters 4 and hose section 3a specified.

The hose section 3a is thereby pushed into the cone, and indeed so far, until he at one through the outer dimensions of the hose section 3a in relation to the depth of insertion into the adapter 4 at the sealing line 40 invests. Because at least the hose section 3a elastically deformable, can with appropriate Aufschiebekraft a stable leak-tight clamping and sealing between hose section 3a and Adipaterinnenkonus 4a be brought about. By choosing the cone 4a hoses of different diameters can be used, or the adapter can be used adaptively for different hose diameters.

The smaller the outer diameter of the hose section 3a the deeper it gets into the inner cone 4a inserted the adapter.

Important here is the following. When using a conventional hose connector, the hose connector IN is pushed into the hose. This reduces in known hose connectors, the resulting flow area at the connector point to the much smaller dimension of the hose connector.

When pushing the adapter used as a connector according to the invention 4 On the other hand, the inner diameter of the inserted tube also remains over the joint. At the junction thus no fluidic taper of the cross section is formed.

This first makes the use according to the invention of a Redon vacuum bottle instead of a motor pump possible.

3 shows an embodiment in which at both ends of the adapter 4 opposite Konii 4a and 4b are inserted so that from both sides hose ends 3a and 3b are insertable.

Although the illustration shows two equal diameter tube sections 3a and 3b , but it can also be used two different outer diameter hose end, because the insertion depth is determined in the respective adapter cone by the selected outer diameter of the hose end.

It is essential here that it can be seen very clearly that the inner passage width is not reduced by the hose adapter according to the invention. This is in the context of the invention when using a Redon bottle as a vacuum source for reasons of flow uniformity and tightness of considerable importance. A constriction would create an additional pressure gradient that would be unfavorable.

In comparison with the state of the art, like him 4 shows, this difference becomes clear. 4 shows a known adapter with both ends integrally molded pipe socket, which on the outer contour to seal the deferred hose end a so-called olive 40a and 40b as a surface texture. Here are the two hose ends 3a and 3b on the neck and its olives 40a and 40b deferred, in such a way that the inner surfaces of the hose ends 3a and 3b are positioned sealing. This clearly shows that with such a hose connector or hose adapter of the prior art, a considerable reduction of the internal passage cross-section takes place.

The internal passage section Y of the hose connector 4 ' is considerably smaller than the inner passage cross-section X of the hose ends 3a and 3b ,

This produces this known hose connector 4 ' a flow or pressure gradient, which would be for the inventive use as described above of considerable disadvantage, or would make it impossible first.

LIST OF REFERENCE NUMBERS

1

pad

2

Pad, adhesive film

3a, b

tube sections

4

adapter

4a, b

Inner cone, inner cone

4 '

known hose connector

5

Underdot bottle, Redon bottle

6

hose connection

7

bellow

8th

carrying eye

40

sealing line

40a, b

pipe socket

X

Inner diameter of the hose sections 3a , b

Y

Inner diameter of known hose connectors

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

• EP 0777504 B1 [0002]
• EP 0191851 [0009]

Claims (10)

Wound suction system with a largely airtight, provided with a liquid-permeable with compress or foam body wound closure, which is connected via a hose system for Wundwasserabsaugung with a vacuum source, characterized in that for creating an external, non-subcutaneous wound closure, the vacuum source, a pump drive-free vacuum bottle ( 5 ). Wound suction system according to claim 1, characterized in that the vacuum bottle ( 5 ) is a disposable vacuum bottle. Wound suction system according to claim 1 or 2, characterized in that the vacuum bottle ( 5 ) is a vacuum bottle according to the Redon technique. Wound suction system according to one of claims 1 to 3, characterized in that for the gas-tight connectivity of the vacuum bottle ( 5 ) with the airtight outer wound closure a hose adapter ( 4 ) provided with at least one inner cone ( 4a . 4b ), in such a way that, releasing a maximum flow cross-section, it opens at least on one side (FIG. 3a . 3b ) can be plugged. Wound suction system according to claim 4, characterized in that the cone ( 4a . 4b ) is dimensioned in length and diameter gradient so that it can be variably attached to a variety of common outside hose diameters. Wound suction system according to claim 4 or 5, characterized in that the adapter ( 4 ) is multi-part and is provided at least on one side with a pinch-seal connection. Wound suction system according to one of claims 4 to 6, characterized in that the adapter ( 4 ) consists of sterilizable plastic. Wound suction system according to one of claims 1 to 6, characterized in that the adapter ( 4 ) consists of silicone. Wound suction system according to one of the preceding claims 1 to 8, characterized in that the adapter ( 4 ) directly on the vacuum connection ( 6 ) Redon bottle ( 5 ) is integrated. Wound suction system according to one of the preceding claims 1 to 8, characterized in that the adapter ( 4 ) at both ends with two opposing Konii ( 4a . 4b ) is provided for receiving both sides of tube sections ( 3a . 3b ).

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