Shear resistant wound dressing for use in vacuum wound therapy
First Claim
Patent Images
1. A vacuum 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, the adhesive adapted to affix the backing layer over a wound and provide a substantially fluid-tight seal around a perimeter of the wound;
a reinforcement layer in contact with the backing layer and 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 the wound; and
a perforated wound contact layer configured to be in direct contact with the wound, wherein the absorbent filler is positioned over the wound contact layer; and
a vacuum port configured to fluidically connect a vacuum system to the dressing, wherein the vacuum port is configured to provide a fluid passage for fluid coupling between a vacuum tube and the wound, 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 secured to the outer side of the backing layer; and
a connector segment extending above the flange, the connector segment configured to be connected to the vacuum 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.
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Citations
16 Claims
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1. A vacuum 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, the adhesive adapted to affix the backing layer over a wound and provide a substantially fluid-tight seal around a perimeter of the wound; a reinforcement layer in contact with the backing layer and 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 the wound; and a perforated wound contact layer configured to be in direct contact with the wound, wherein the absorbent filler is positioned over the wound contact layer; and a vacuum port configured to fluidically connect a vacuum system to the dressing, wherein the vacuum port is configured to provide a fluid passage for fluid coupling between a vacuum tube and the wound, 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 secured to the outer side of the backing layer; and a connector segment extending above the flange, the connector segment configured to be connected to the vacuum 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)
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Specification