Dressing with differentially sized perforations
AssigneeKCI Licensing, Inc.
InventorsRichard Daniel John Coulthard, Christopher Brian Locke
Life of this patent
Estimating the term…
Abstract
A dressing for treating a tissue site may include a base layer, a sealing member, a first and a second wicking layer, and an absorbent layer. The base layer may have a periphery surrounding a central portion and a plurality of apertures disposed through the periphery and the central portion. The apertures in the periphery may be larger than the apertures in the central portion. The sealing member and the base layer may define an enclosure. The first and the second wicking layer may each be disposed in the enclosure with the absorbent layer positioned between the first and the second wicking layer. Other dressings, systems, and methods are disclosed.
Claims33
A dressing for treating a tissue site, comprising:
- a base layer including a plurality of apertures disposed through a periphery and a central portion;
- and
- an adhesive configured to extend through the apertures in at least the periphery, at least one of the apertures in a corner of the periphery being configured to expose more of the adhesive for contact with tissue than other apertures in the periphery.
A method of manufacturing a dressing, comprising:
- providing a base layer, the base layer having a periphery surrounding a central portion;
- forming a plurality of apertures in the base layer;
- providing an adhesive configured to be in fluid communication with the plurality of apertures at least in the periphery of the base layer;
- providing a sealing member configured to be positioned adjacent the base layer, the sealing member having a periphery and a central portion;
- coupling at least a portion of the periphery of the base layer to the periphery of the sealing member to form an enclosure;
- disposing a first wicking layer in the enclosure;
- disposing a second wicking layer in the enclosure;
- and
- disposing an absorbent layer between the first wicking layer and the second wicking layer.
A method of treating a tissue site, comprising:
- disposing a tissue interface proximate the tissue site;
- positioning a dressing proximate the tissue interface, the dressing comprising:
- a base layer having a periphery surrounding a central portion and a plurality of apertures disposed through the periphery and the central portion, the apertures in the periphery being larger than the apertures in the central portion, wherein the base layer is adapted to cover the tissue interface and tissue surrounding the tissue site,
- an adhesive in fluid communication with the apertures at least in the periphery of the base layer,
- a sealing member having a periphery and a central portion, the periphery of the sealing member positioned proximate to the periphery of the base layer, wherein the central portion of the sealing member and the central portion of the base layer define an enclosure,
- a first wicking layer disposed in the enclosure,
- a second wicking layer disposed in the enclosure,
- an absorbent layer disposed between the first wicking layer and the second wicking layer, and
- a conduit interface positioned proximate to the sealing member and in fluid communication with the enclosure;
- applying a force to the sealing member, the force causing at least a portion of the adhesive to extend through the plurality of apertures;
- fluidly coupling a reduced-pressure source to the conduit interface;
- applying negative pressure from the reduced-pressure source to the tissue site;
- and
- drawing fluid through the plurality of apertures to the absorbent layer.
Dependencies are inferred from the claim text.