Device and method for wound therapy
A wound therapy device is disclosed. The wound therapy device may include a housing for covering at least a portion of a wound and for sealing to a body surface of a patient. The housing may also include a liquid collector for retaining liquid therein and a vacuum connection for coupling to a vacuum source. The vacuum connection may be in gaseous communication with the liquid collector. The vacuum connection may be separated from the liquid collector by a liquid barrier.
1. A wound dressing comprising:
a wound interface layer;
a flexible wound cover configured to cover at least a portion of a wound;
a first region comprising an absorbent layer positioned between the flexible wound cover and the wound interface layer;
a second region comprising a source of negative pressure positioned over the wound interface layer and configured to deliver a reduced pressure to the wound; and
a liquid barrier configured to prevent liquid from reaching the source of negative pressure;
wherein the first region and the second region are positioned over the wound interface layer with the second region offset from the first region; and
wherein the flexible wound cover covers at least the first region.
2. The wound dressing of claim 1 , wherein the second region is laterally offset from the first region.
3. The wound dressing of claim 1 , wherein the second region is vertically offset from the first region.
4. The wound dressing of claim 1 , further comprising a moisture disperser layer positioned above the wound interface layer, the moisture disperser layer configured to distribute liquid.
5. The wound dressing of claim 4 , wherein the moisture disperser layer is positioned between the absorbent layer and the wound interface layer at least in the first region.
6. The wound dressing of claim 1 , further comprising a three-dimensional knit spacer fabric beneath the absorbent layer at least in the first region.
7. The wound dressing of claim 1 , wherein the flexible wound cover covers at least a portion of the second region.
8. The wound dressing of claim 1 , wherein the liquid barrier comprises a filter.
9. The wound dressing of claim 1 , wherein the liquid barrier comprises a gas permeable material.
10. The wound dressing of claim 1 , wherein the flexible wound cover covers the source of negative pressure.
11. The wound dressing of claim 10 , wherein the source of negative pressure comprises an inlet and an outlet, the outlet configured to vent gas outside the flexible wound cover.
12. The wound dressing of claim 11 , wherein the inlet comprises a hydrophobic filter.
13. The wound dressing of claim 1 , wherein the dressing is configured to locate the source of negative pressure at a location away from the wound.
14. The wound dressing of claim 1 , wherein the dressing comprises a pump module in the second region that encloses the source of negative pressure and a power source.
15. The wound dressing of claim 1 , wherein the source of negative pressure is a vacuum pump.
16. The wound dressing of claim 11 , wherein the outlet comprises a filter.