Vented wound dressing barrier

Inventors

Ganey, Timothy • Namin, Shabnam • Kaliada, Hanna • Osorio, Santiago

Assignees

Vivex Biologics Group Inc

Abstract

A vented wound dressing barrier includes one or more membrane layers with a plurality of vents. The vents are cut along a perimeter of the vents through the one or more membrane layers. Each vent having a connection portion uncut relative to the one or more membrane layers thereby forming a hinge configured to allow the vents to open for drainage when exposed to fluid underlying the vented wound dressing barrier. The plurality of vents is each cut along the perimeter without removal of any of the membrane layer. The one or more membrane layers with the plurality of vents has a surface for covering a wound, the surface area in the absence of a fluid pressing on the vents having no openings or voids which reduce the surface area of a vented wound dressing barrier area covering a wound.

Core Innovation

The invention provides a vented wound dressing barrier having one or more membrane layers with a plurality of vents. Each vent is cut along a perimeter of the vents through the one or more membrane layers and includes a connection portion uncut relative to the membrane layers, forming a hinge configured to allow the vents to open for drainage when exposed to fluid underlying the vented wound dressing barrier.

The barrier further includes a base layer underlying and attached to an inner surface of one of the membrane layers. The base layer has a plurality of holes aligned with the plurality of vents, and the holes of the base layer are sized smaller than the cut perimeter of the vents, thereby constraining fluid communication between vent openings and the underlying wound fluid through the aligned, size-restricted features.

In further embodiments, the vented membrane layers and vents are combined with a cryoprotectant coating. The cryoprotectant coating covers the one or more membrane layers, and the combination of the membrane layers with the cryoprotectant coating are dried or freeze-dried to form a coated vented wound dressing barrier.

Claims Coverage

The document includes two independent claims. Across them, the core coverage centers on hinged, perimeter-cut vents in membrane layers for drainage when exposed to underlying fluid, with a size-constrained perforated base layer in one claim and a cryoprotectant coating with dried or freeze-dried formation in the other.

Overall, the claims cover hinged vents formed by an uncut connection portion in membrane layers for drainage under underlying fluid, optionally constrained by a base layer with holes smaller than the vent cut perimeter, and optionally covered by a cryoprotectant coating that is dried or freeze-dried.

Stated Advantages

Documented Applications