Apparatus for aspirating, irrigating and cleansing wounds
First Claim
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1. An apparatus for treating a wound, comprising:
- a conformable wound dressing comprising a backing layer, wherein the backing layer comprises a proximal wound-facing face and a distal face and is configured to be placed over a wound;
a wound filler comprising a polyurethane foam configured to be placed under the backing layer and over the wound;
at least one inlet passage for moving fluid to the wound, wherein the at least one inlet passage is in fluid communication with an opening in the backing layer;
at least one outlet passage for moving fluid away from the wound, wherein the at least one outlet passage is in fluid communication with an opening in the backing layer;
a wound dressing pressure sensor for detecting negative pressure at the wound;
a fluid reservoir containing an anti-bacterial fluid in fluid communication with the at least one inlet passage to supply anti-bacterial fluid from the fluid reservoir to the wound;
a vacuum pump configured to move fluid through at least the opening in the backing layer and the outlet passage; and
a pressure feedback regulator, wherein the pressure feedback regulator is configured to receive an output signal from the wound dressing pressure sensor and control the vacuum pump to produce a desired negative pressure at the wound.
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Abstract
An apparatus for cleansing wounds in which irrigant fluid from a reservoir connected to a conformable wound dressing and wound exudate from the dressing are recirculated by a device for moving fluid through a flow path which passes through the dressing and a means for fluid cleansing and back to the dressing. The cleansing means (which may be a single-phase, e.g. microfiltration, system or a two-phase, e.g. dialytic system) removes materials deleterious to wound healing, and the cleansed fluid, still containing materials that are beneficial in promoting wound healing, is returned to the wound bed. The dressing and a method of treatment using the apparatus.
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Citations
16 Claims
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1. An apparatus for treating a wound, comprising:
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a conformable wound dressing comprising a backing layer, wherein the backing layer comprises a proximal wound-facing face and a distal face and is configured to be placed over a wound; a wound filler comprising a polyurethane foam configured to be placed under the backing layer and over the wound; at least one inlet passage for moving fluid to the wound, wherein the at least one inlet passage is in fluid communication with an opening in the backing layer; at least one outlet passage for moving fluid away from the wound, wherein the at least one outlet passage is in fluid communication with an opening in the backing layer; a wound dressing pressure sensor for detecting negative pressure at the wound; a fluid reservoir containing an anti-bacterial fluid in fluid communication with the at least one inlet passage to supply anti-bacterial fluid from the fluid reservoir to the wound; a vacuum pump configured to move fluid through at least the opening in the backing layer and the outlet passage; and a pressure feedback regulator, wherein the pressure feedback regulator is configured to receive an output signal from the wound dressing pressure sensor and control the vacuum pump to produce a desired negative pressure at the wound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification