Shear resistant wound dressing for use in vacuum wound therapy
First Claim
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1. A negative pressure wound therapy dressing comprising:
- a backing layer comprising a flexible polymeric membrane, the backing layer including an inner wound facing side, an outer side opposite the wound facing side, and an aperture extending through the backing layer;
an adhesive disposed on the inner wound facing side of the backing layer;
a reinforcement layer disposed on the inner wound facing side of the backing layer;
an absorbent filler including an inner wound facing side, wherein the absorbent filler is configured to be in fluid communication with the reinforcement layer and configured to collect exudate removed from a wound; and
a perforated wound contact layer configured to be in direct contact with the wound, wherein the absorbent filler is configured to be positioned over the wound contact layer; and
a vacuum port configured to be fluidically connected, via a tube, to a negative pressure source, wherein the vacuum port comprises;
a flange having an underside and a top side, wherein the underside of the flange has an opening positioned over the aperture in the backing layer and the underside of the flange is positioned on the outer side of the backing layer; and
a connector extending above the flange, the connector configured to be connected to the tube; and
a filter screen positioned underneath the vacuum port, the filter screen configured to prevent migration of particles into the vacuum port.
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Abstract
A cover layer for a vacuum wound therapy dressing includes a backing layer formed from a flexible polymeric membrane and an adhesive layer for affixing the backing layer over a wound bed to provide a substantially fluid-tight seal around a perimeter of the wound bed. The cover layer is reinforced with a reinforcement layer extending to a peripheral region of the backing layer to distribute forces associated with evacuating a reservoir, as defined by or within the cover, to stimulate healing of the wound bed.
385 Citations
18 Claims
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1. A negative pressure wound therapy dressing comprising:
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a backing layer comprising a flexible polymeric membrane, the backing layer including an inner wound facing side, an outer side opposite the wound facing side, and an aperture extending through the backing layer; an adhesive disposed on the inner wound facing side of the backing layer; a reinforcement layer disposed on the inner wound facing side of the backing layer; an absorbent filler including an inner wound facing side, wherein the absorbent filler is configured to be in fluid communication with the reinforcement layer and configured to collect exudate removed from a wound; and a perforated wound contact layer configured to be in direct contact with the wound, wherein the absorbent filler is configured to be positioned over the wound contact layer; and a vacuum port configured to be fluidically connected, via a tube, to a negative pressure source, wherein the vacuum port comprises; a flange having an underside and a top side, wherein the underside of the flange has an opening positioned over the aperture in the backing layer and the underside of the flange is positioned on the outer side of the backing layer; and a connector extending above the flange, the connector configured to be connected to the tube; and a filter screen positioned underneath the vacuum port, the filter screen configured to prevent migration of particles into the vacuum port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification