×

Wound dressing

  • US 10,231,875 B2
  • Filed: 05/31/2017
  • Issued: 03/19/2019
  • Est. Priority Date: 11/21/2007
  • Status: Active Grant
First Claim
Patent Images

1. A wound treatment apparatus, comprising:

  • a dressing comprising;

    a wound contact layer;

    a cover layer;

    a first layer disposed in a space between the cover layer and the wound contact layer, wherein the first layer comprises a porous material;

    a second layer disposed in the space and made of a different material than the first layer,an absorbent layer comprising superabsorbent material positioned in fluid communication between the first layer and the second layer, wherein the absorbent layer is above the first layer and below the second layer, wherein the first layer has a perimeter that is the same size and shape as a perimeter of the second layer, and wherein the perimeters of the first and second layers are larger than a perimeter of the absorbent layer; and

    a connector in fluid communication with the space for connecting the space to a source of negative pressure;

    wherein the first layer and the second layer allow transmission of fluid around the perimeter of the absorbent layer.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×