WOUND DRESSING SYSTEM

Abstract

The invention relates to a wound dressing system for treating a wound, comprising at least a first and a second sheet-like capillary membrane system,wherein the first and the second sheet-like capillary membrane systems are in each case connected to at least one supply line, so that fluids, media, gases, and/or other substances can be guided through the supply line and the respective capillary membrane system. According to the invention, the wound dressing system further comprisesa first removal container which is detachably connected via a line path, which comprises at least one of the supply lines of the first capillary membrane system, to the first capillary membrane system, and via which a rinsing fluid can be supplied to said first capillary membrane system,a second removal container which is detachably connected via a line path, which comprises at least one of the supply lines of the second capillary membrane system, to the second capillary membrane system, and via which a treatment solution can be supplied to said second capillary membrane system, anda drainage system, which can be coupled to a vacuum unit and via which fluids can be discharged from the wound to be treated.

Claims

1. Wound dressing system for treating a wound, comprising at least a first and a second sheet-like capillary membrane system, wherein the first and the second sheet-like capillary membrane systems are in each case connected to at least one supply line such that fluids, media, gases, and/or other substances can be supplied through the supply line and the respective capillary membrane system, wherein the wound dressing system further comprises a first removal container with a drain, which is detachably connected to the first capillary membrane system via a first drainage line, which comprises at least one of the supply lines of the first capillary membrane system, and by means of which a rinsing fluid can be supplied to the first capillary membrane system, a second removal container with a drain, which is detachably connected to the second capillary membrane system via a second drainage line, which comprises at least one of the supply lines of the second capillary membrane system, and by means of which a treatment solution can be supplied to the second capillary membrane system, as well as a drainage system, which can be coupled to a vacuum unit and by means of which fluids can be discharged from the wound to be treated.

2. Wound dressing system according to claim 1, characterized in that the first and/or the second capillary membrane system is formed as a mesh made of capillary membranes arranged parallel to one another, wherein the capillary membranes in the mesh are connected to one another by means of connecting elements in the mesh, which extend at intervals to one another and are parallel to one another, and which are maintained at intervals to one another by means of the connecting elements.

3. Wound dressing system according to claim 2, characterized in that the capillary membranes are connected to a mesh by means of yarn-like connecting elements.

4. Wound dressing system according to claim 1, characterized in that the capillary membranes of the first and/or of the second capillary membrane system are embedded with at least one of their ends in a single supply line.

5. Wound dressing system according to claim 1, characterized in that the first and/or the second capillary membrane system is connected to two supply lines, wherein the capillary membranes of the respective capillary membrane system are embedded with their opposite ends in one single supply line each.

6. Wound dressing system according to claim 1, characterized in that the capillary membranes of the first and/or of the second capillary membrane system have a transmembrane flow for water ranging from 0.1 to 500 cm3/(min.Math.cm2.Math.MPa) (from 0.01 to 50 mL/(min.Math.cm2.Math.bar)).

7. Wound dressing system according to claim 1, characterized in that the capillary membranes of the first and/or of the second capillary membrane system have a nominal pore [size] of 0.2 m.

8. Wound dressing system according to claim 1, characterized in that it further comprises a bag-type wound dressing, wherein the outer edge of the bag-type wound dressing is closed and has a top side, a bottom side, and a bag interior, wherein the bottom side and the top side are each formed from a flat material and the bottom side is permeable to fluids, and wherein the first and the second capillary membrane systems are arranged in the interior of the bag.

9. Wound dressing system according to claim 8, characterized in that the drainage system is arranged in the interior of the bag and can be coupled to a vacuum unit via a connecting line exiting from the bag-type wound dressing.

10. Wound dressing system according to claim 8, characterized in that the drainage system is a drainage catheter, which exits the bag-type wound dressing via a passage adapted to be sealed against fluids at its cross-section and which can be coupled to a vacuum unit.

11. Wound dressing system according to claim 1, characterized in that the bottom side of the bag-type wound dressing is formed from a non-woven, flat material or a semi-permeable, microporous flat membrane.

12. Wound dressing system according to claim 1, characterized in that the bottom side of the bag-type wound dressing has openings.

13. Wound dressing system according to claim 1, characterized in that the first and second capillary membrane systems are identical and form a single supply capillary membrane system, which is connected to at least one supply line, and that the first removal container and the second removal container are connected to the supply capillary membrane system by means of at least one supply line of the supply capillary membrane system.

14. Wound dressing system according to claim 1, characterized in that the ratio between the volume of the first removal container and the volume of the second removal container is at least 5.

15. Wound dressing system according to claim 1, characterized in that it comprises at least one further arrangement of capillary membranes.

Description

[0064] The invention will be explained by means of the following figures, in which the scope of the invention is not limited by the figures:

[0065] The following is shown:

[0066] FIG. 1: A capillary membrane system usable in the wound dressing system, with a mesh made of capillary membranes and supply lines at both ends of the mesh;

[0067] FIG. 2: A capillary membrane system usable in the wound dressing system with a supply line at one of the mesh ends, as well as U-shaped capillary membranes at the opposite mesh end;

[0068] FIG. 3: Cross-section (schematic) through a bag-type wound dressing usable in the wound dressing system;

[0069] FIG. 4: Section A-A of the bag-type wound dressing shown in cross-section in FIG. 3;

[0070] FIG. 1 shows a top view schematically and not to scale of a capillary membrane system 2 made of capillary membranes 3 usable in the wound dressing system 1 according to the invention. The capillary membranes 3 are connected to a mesh by means of connecting elements 4 extending parallel to one another such that they are arranged parallel to one another and are maintained at an interval with respect to one another. In the present example, the opposite ends of the capillary membranes 3 are embedded in the supply lines 5, 6 such that a fluid connection exists between the lumens of the supply lines 5, 6 and the lumen of the capillary membranes 3. The supply lines 5, 6 are combined into one common line 8 by means of a Y-piece 7. This structure enables the rinsing fluid and/or the treatment solution, which is supplied via the line 8, to be distributed to the supply lines 5, 6 and supplied to the capillary membranes 3 in dead-end mode. The rinsing fluid and/or the treatment solution then flows over the porous, semi-permeable walls of the capillary membranes 3 and exits from them, and is uniformly supplied to the wound by means of the surface of the capillary membrane system 2.

[0071] FIG. 2 also schematically shows, in a representation that is not to scale, a wound dressing system 1, in which the capillary membranes 3 are only connected to one supply line 5. The two ends of the capillary membranes are open, and the two ends are embedded in one supply line 5. The free ends 10 of the capillary membranes 3 are in a U-shape at the end of the mesh opposite the supply line 5, and thereby closed there. In this manner, the flow takes place in dead-end mode with the capillary membranes 3 of the capillary membrane system 2 shown in FIG. 3.

[0072] FIG. 3 schematically shows a cross-section through a bag-type wound dressing 10, which has a top side 11 and a bottom side 12, which are welded together, e.g., at their edges 13a, 13b, whereby a closed bag interior 14 results. The bag interior 14 here only contains a first capillary membrane system 2, in order to simplify the representation, which comprises capillary membranes 3, which are preferably connected to one another in the form of multifilament yarns and are maintained at an interval with respect to one another by means of connecting elements 4 extending parallel to one another. A second membrane system required according to the present invention may be arranged in one embodiment above or below the shown capillary membrane system 2, in which the supply lines of the first capillary membrane system and of the second capillary membrane system may then exit on the same side or on different sides of the bag-type wound dressing 10.

[0073] In the present case, the opposite ends of the capillary membranes 3 feed into supply lines 5, 6 such that fluids, media, gases, and/or other substances can be supplied through the supply lines 5, 6 and the capillary membrane system 2. The supply lines 5, 6 exit through the top side 11 of the bag-type wound dressing 10 (not shown here).

[0074] A drainage tube 15, by means of which, for example, exudate collected in the wound can be removed, is arranged below the flat capillary membrane system 2.

[0075] FIG. 4 shows the wound dressing system shown in FIG. 3 in a cross-section along line A-A. In principle, this is a top view from a position above the bottom side 12 of the bag-type wound dressing 10 in the direction of the top side 11 of the bag-type wound dressing 10. The capillary membrane system 2, which is composed of capillary membranes 3 parallel to one another, which are connected to one another and maintained at an interval with respect to one another by means of the connecting elements 4, is arranged below the top side 11, i.e., as shown in FIG. 3, between the bottom side 12 and the top side 11. The opposite ends of the capillary membranes 3 are embedded into supply lines 5, 6 such that fluids, media, gases, and/or other substances can be supplied through the supply lines 5, 6 and the capillary membrane system 2. The supply lines 5, 6 exit from the bag-type wound dressing 10 through the top side 11 of the bag-type wound dressing 10 via correspondingly adapted openings in the top side 11 and, in the present example, are combined via a Y-connector 16 outside of the bag-type wound dressing 10. In the present case, the capillary membrane system 2 is thus operated in dead-end mode, i.e., a medium supplied by means of the supply lines 5, 6 is introduced into the capillary membrane system 2 and enters the interior of the bag completely via the walls of the capillary membranes 3.

[0076] FIG. 2 also shows the drainage tube 15, which is arranged underneath the capillary membrane system 2. The drainage tube has perforations in its walls such that, for example, exudate collected in the wound can be suctioned and thus removed from the wound via the drainage tube. The drainage tube 15 likewise exits from the bag-type wound dressing 10 via a correspondingly adapted opening in the top side 11 and can be connected, for example, to a vacuum unit (not shown).