DRESSINGS AND METHODS FOR TREATING A TISSUE SITE ON A PATIENT
First Claim
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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;
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
41 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; 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, 16, 17, 18, 19, 20, 21)
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22. A method for treating a tissue site with a reduced pressure, the method comprising:
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deploying a wound interface member proximate to the tissue site; covering the wound interface 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 wound interface member; 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 (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of manufacturing a dressing for treating a tissue site, the method comprising:
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providing a wound interface member for placing proximate to the tissue site; providing a covering formed with an evaporative-window opening; associating a liquid-impermeable, vapor-permeable membrane with the evaporative-window opening to form an evaporative window; and wherein the liquid-impermeable, vapor-permeable membrane is operable to allow evaporated liquids to be transmitted through the liquid-impermeable, vapor-permeable membrane. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41)
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Specification