Reduced pressure wound treatment system
First Claim
1. A method of treating a wound, comprising:
- positioning a membrane into contact with the wound;
positioning a wound cover over the wound, the cover having a rigid or semi-rigid ring sized to contact skin surrounding the wound so as to create a relatively fluid-tight seal;
applying reduced pressure to the wound through a port on the wound cover to draw fluid from the wound through the membrane;
while reduced pressure is being applied to the wound, collecting fluid from the wound in a space between the cover and the membrane; and
preventing the collected fluid from flowing through the port.
1 Assignment
0 Petitions
Accused Products
Abstract
A reduced pressure treatment appliance is provided for treating a wound on the body of a patient. In some embodiments, the appliance comprises a cover, which can have a top cup member and an interface member. The interface member can have flow control means, configured to permit exudate from the wound to flow through the flow control means into the volume under the cover, but not in the opposite direction. Also, in some embodiments, the top cup member can have a lid member, a cup body member, and lid attachment means to removably attach the lid member to the cup body member. In some embodiments, the cover can be configured to facilitate access to the wound for monitoring, treatment and other purposes without removing the cover from the body. The wound treatment appliance can have a vacuum system to supply reduced pressure to the site of the wound in the volume under the cover. A suction bulb can he used lo provide a source of reduced pressure to the cover. Additionally, methods are provided for using various embodiments of the treatment appliance.
447 Citations
46 Claims
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1. A method of treating a wound, comprising:
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positioning a membrane into contact with the wound; positioning a wound cover over the wound, the cover having a rigid or semi-rigid ring sized to contact skin surrounding the wound so as to create a relatively fluid-tight seal; applying reduced pressure to the wound through a port on the wound cover to draw fluid from the wound through the membrane; while reduced pressure is being applied to the wound, collecting fluid from the wound in a space between the cover and the membrane; and preventing the collected fluid from flowing through the port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for the treatment of a wound on a body, the method comprising:
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positioning a flexible membrane in contact with the body, the flexible membrane forming a seal with the body; placing a wound cover over the wound to enclose the wound, the wound cover forming a reversible seal with the flexible membrane; and applying negative pressure to the wound through the wound cover and the flexible membrane; wherein the wound cover is removable from and resealably attached to the flexible membrane while the flexible membrane remains sealed with the body. - View Dependent Claims (10, 11, 12, 13)
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14. A method of treating a wound, comprising:
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positioning a membrane into contact with the wound; positioning a wound cover over the wound, the cover having a rigid or semi-rigid ring sized to contact skin surrounding the wound so as to create a relatively fluid-tight seal; applying reduced pressure to the wound through a port on the wound cover to draw fluid from the wound through the membrane; collecting fluid from the wound in a space between the cover and the membrane; and preventing the collected fluid from flowing through the port; wherein creating a relatively fluid-tight seal comprises positioning an o-ring seal or gasket between the cover and the wound. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method of treating a wound, comprising:
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positioning a membrane into contact with the wound; positioning a wound cover over the wound, the cover sized and configured to contact skin surrounding the wound so as to create a relatively fluid-tight seal; applying reduced pressure to the wound through a port on the wound cover to draw fluid from the wound through the membrane; collecting fluid from the wound in a chamber between the cover and the membrane; preventing the collected fluid from flowing through the port; removing the chamber when it is filled with wound exudate; and subsequently positioning a second chamber between a second cover and the wound. - View Dependent Claims (22)
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23. A method of treating a wound, comprising:
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positioning a membrane into contact with the wound; positioning a wound cover over the wound, the cover sized and configured to contact skin surrounding the wound so as to create a relatively fluid-tight seal; applying reduced pressure to the wound through a port on the wound cover to draw fluid from the wound through the membrane using a source of reduced pressure; collecting fluid from the wound in a space between the cover and the membrane; and preventing the collected fluid from flowing through the port by using an overflow mechanism positioned at the port. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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31. A method of treating a wound, comprising:
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positioning a membrane into contact with the wound; positioning a wound cover over the wound, the cover sized and configured to contact skin surrounding the wound so as to create a relatively fluid-tight seal; applying reduced pressure to the wound through a port on the wound cover to draw fluid from the wound through the membrane; collecting fluid from the wound in a space between the cover and the membrane; preventing the collected fluid from flowing through the port, and preventing the collected fluid from flowing back through the membrane into the wound. - View Dependent Claims (32, 33, 34, 35, 36)
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37. A method of treating a wound, comprising:
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positioning a membrane into contact with the wound; positioning a wound cover over the wound, the cover sized and configured to contact skin surrounding the wound so as to create a relatively fluid-tight seal; applying reduced pressure to the wound to draw fluid from the wound through the membrane; collecting fluid from the wound at a location between the membrane and the cover; and preventing the collected fluid from flowing out of the cover while reduced pressure is being applied to the wound. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification