Wound care system with a mat of capillary membranes

Patent metadata

Field	Value
Publication number	US-2016287446-A1
Application number	US-201415036195-A
Country	US
Kind code	A1
Filing date	Nov 12, 2014
Priority date	Nov 13, 2013
Publication date	Oct 6, 2016
Grant date	—

Abstract

Wound care system comprising a single-layer arrangement of mutually parallel capillary membranes with a porous, semi-permeable wall, a lumen and at least one open end, wherein the capillary membranes have an external diameter in the range of 50 to 500 μm and a wall thickness in the range of 5 to 1000 μm and, with their open end, are fluidically connected to a common supply line with a wall and a lumen, characterized in that the capillary membranes are connected to one another by means of connection elements to form a mat and are held at a distance from one another by the connection elements, in that the capillary membranes are embedded with their open end so fluid-tightly in the wall of the common supply line that a fluid connection is obtained between the lumen of the supply line and the lumen of the capillary membranes, in that the distance of the capillary membranes from one another in the mat is 1 to 10 times the external diameter of the capillary membranes, and in that the distance of the connection elements from one another is in the range of 1 to 50 mm.

First claim

1 . Wound care system, comprising a single-layer arrangement of mutually parallel capillary membranes with a porous, semi-permeable wall and a lumen and at least one open end,
wherein the capillary membranes have an external diameter in the range of 50 to 500 μm and a wall thickness in the range of 5 to 1000 μm, wherein the capillary membranes, with their at least one open end, are connected to at least one common supply line with a wall and a lumen,
characterized in that
the capillary membranes, with their at least one open end, are embedded at their outer periphery so fluid-tightly in the wall of the at least one supply line that a fluid connection exists between the lumen of the supply line and the lumen of the capillary membranes,
the arrangement of mutually parallel capillary membranes furthermore has a plurality of spaced and mutually parallel connection elements by means of which the capillary membranes are connected to one another to form a mat and are held at a distance from one another by the connection elements,
the distance of the capillary membranes from one another in the mat is 1 to 10 times the external diameter of the capillary membranes, wherein the distance is measured from the longitudinal axes of the capillary membranes, and
the distance of the connection elements from one another lies in the range of 1 to 50 mm.

2 . The wound care system according to claim 1 , characterized in that the capillary membrane arrangement is connected to two supply lines, wherein the capillary membranes are each embedded with their opposite ends in a respective supply line.

3 . The wound care system according to claim 1 , characterized in that the capillary membranes have a transmembrane flow for water in the range of 0.01 to 50 mL/(min·cm 2 ·bar).

4 . The wound care system according to claim 1 , characterized in that the capillary membranes are connected by means of thread-like connection elements to form a mat.

5 . The wound care system according to claim 4 , characterized in that the thread-like connection elements are multifilament textile threads.

6 . The wound care system according to claim 5 , characterized in that the multifilament textile threads are multifilament polyester threads, polypropylene threads or polytetrafluoroethylene threads.

7 . The wound care system according to claim 4 , characterized in that the mat is a woven mat in which the capillary membranes and the connecting fibers are woven together.

8 . The wound care system according to claim 4 , characterized in that the mat is a knitted mat, in which the capillary membranes and the connecting fibers are knitted together.

9 . The wound care system according to claim 1 , characterized in that the at least one common supply line is a flexible silicone tube.

10 . The wound care system according to claim 1 , characterized in that it comprises at least one additional arrangement of capillary membranes.

11 . The wound care system according to claim 1 , characterized in that it comprises a drainage system.

12 . The wound care system according to claim 1 , characterized in that it furthermore comprises a pouch-shaped wound dressing, wherein the pouch-shaped wound dressing is closed at its outer edge and has an upper face, a lower face and a pouch interior, wherein the lower face and the upper face are each formed from a two-dimensional material and the lower face is permeable to fluids, wherein the arrangement consists of mutually parallel capillary membranes in the pouch interior and wherein the at least one supply line is connectable to a supply unit or a disposal unit outside the pouch-shaped wound dressing.

13 . The wound care system according to claim 12 , characterized in that it comprises a drainage system which is arranged in the interior of the pouch and which is suitable for removing exudate from wounds being treated.

14 . The wound care system according to claim 13 , characterized in that the drainage system is a drainage catheter which exits from the pouch-shaped wound dressing via a through-opening, fluid-tightly fitted to its cross-section, and which is connectable to a vacuum unit.

15 . The wound care system according to claim 12 , characterized in that the lower face of the pouch-shaped wound dressing is formed from a nonwoven two-dimensional material or from a semi-permeable microporous flat membrane.

Assignees

• 3M Innovative Properties Co

Inventors

• Meixner Carsten
• Korbi Haythem

Classifications

• B01D63/026

  Wafer type modules or flat-surface type modules · CPC title

• A61M35/00

  Devices for applying media, e.g. remedies, on the human body (devices for handling toiletry or cosmetic substances A45D; absorbent pads, e.g. swabs, A61F13/15) · CPC title

• B01D65/022

  Membrane sterilisation · CPC title

• A61F2013/00548

  net · CPC title

• B01D69/081

  characterised by the fibre diameter · CPC title