Wound dressing and method of use
AssigneeSmith & Nephew, Inc.
InventorsGordon Campbell Adie, Sarah Jenny Collinson, Christopher John Fryer, Edward Yerbury Hartwell, Derek Nicolini, Yannick Louis Peron
Life of this patent
Estimating the term…
Abstract
A system, method, and apparatus are disclosed for dressing a wound. The apparatus comprises a liquid and gas permeable transmission layer, an absorbent layer for absorbing wound exudate, the absorbent layer overlying the transmission layer, a gas impermeable cover layer overlying the absorbent layer and comprising a first orifice, wherein the cover layer is moisture vapor permeable.
Claims20
A wound dressing for providing protection at a wound site,
- comprising:
- a transmission layer comprising a first surface and a second surface spaced apart by a relaxed mode distance, the first surface comprising a first fabric layer and the second surface comprising a second fabric layer, wherein a filament count of the first fabric layer is greater than a filament count of the second fabric layer;
- a plurality of spacer elements extending generally perpendicular between the first surface and the second surface;
- and
- wherein the transmission layer is configured such that when in a forced mode of operation the first surface and the second surface are spaced apart by a compression mode distance, the compression mode distance less than the relaxed mode distance, and
- wherein the first surface, the second surface, and a lateral stiffness of the spacer elements are configured to cooperate to dissipate force operating over a first area on the first surface to a second area on the second surface, the second area larger than the first area.
A wound dressing for providing protection at a wound site, comprising:
- a cover layer;
- an absorbent layer positioned beneath the cover layer;
- a transmission layer positioned beneath the absorbent layer, the transmission layer comprising a first surface and a second surface, the transmission layer comprising a plurality of spacer elements having lateral stiffness and extending perpendicularly between the first surface and the second surface;
- and
- a through-hole extending through the cover layer and the absorbent layer, and
- wherein the lateral stiffness of the spacer elements is configured to dissipate force operating over a first area on the first surface to a second area on the second surface, the second area larger than the first area, and
- wherein a filament count of the first surface is greater than a filament count of the second surface.
A wound dressing for providing protection at a wound site, comprising:
- a cover layer;
- an absorbent layer positioned beneath the cover layer;
- a transmission layer positioned beneath the absorbent layer, the transmission layer comprising a first surface with a first filament count and a second surface with a second filament count less than the first filament count, the first and second surface spaced apart by a relaxed mode distance;
- a plurality of spacer elements extending between the first surface and the second surface, each spacer element comprising a fiber extending between and substantially perpendicular to the first surface and the second surface;
- and
- a through-hole extending through the cover layer and the absorbent layer, the through-hole configured to connect to a source of negative pressure;
- and
- wherein the first surface, the second surface, and the spacer elements are configured to dissipate force from a first area on the first surface to a second area on the second surface, the second area larger than the first area.
Dependencies are inferred from the claim text.