Dressings and methods for treating a tissue site on a patient
First Claim
Patent Images
1. A dressing for treating a tissue site on a patient, the dressing comprising:
- a wound interface member for placing proximate to the tissue site;
a covering, wherein at least a portion of the covering comprises an evaporative window having a liquid-impermeable, vapor-permeable membrane;
a removable release layer that is releasably attached at least over the evaporative window, wherein the removable release layer comprises a fluid barrier;
wherein the covering is operable to form a sealed space over the tissue site; and
wherein the liquid-impermeable, vapor-permeable membrane allows liquids in the sealed space that have evaporated to egress the sealed space.
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Abstract
Dressings, systems, and methods for treating a tissue site on a patient involve allowing liquids from the tissue site or a priming fluid to evaporate and exit the dressing through a liquid-impermeable, vapor-permeable membrane. The dressing is able to process more liquids than would otherwise be possible without evaporation and potentially to create reduced pressure. Other dressings, systems, and methods are disclosed.
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Citations
25 Claims
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1. A dressing for treating a tissue site on a patient, the dressing comprising:
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a wound interface member for placing proximate to the tissue site; a covering, wherein at least a portion of the covering comprises an evaporative window having a liquid-impermeable, vapor-permeable membrane; a removable release layer that is releasably attached at least over the evaporative window, wherein the removable release layer comprises a fluid barrier; wherein the covering is operable to form a sealed space over the tissue site; and wherein the liquid-impermeable, vapor-permeable membrane allows liquids in the sealed space that have evaporated to egress the sealed space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for treating a tissue site with a reduced pressure, the method comprising:
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deploying a foam member proximate to the tissue site; covering the foam member with a covering having an evaporative window, wherein the evaporative window comprises a liquid-impermeable, vapor-permeable membrane, the covering forming a sealed space over the foam member; removing a removable release layer that is releasably attached at least over the evaporative window, wherein the removable release layer comprises a fluid barrier; and allowing liquids from the tissue site to evaporate and to egress the sealed space through the liquid-impermeable, vapor-permeable membrane. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification