Dressing with spacer fabric to promote medial tension

A dressing for treating a tissue site with negative pressure, the dressing comprising:

• a manifold comprising an open cell foam, the manifold having a first side configured to face the tissue site, a second side opposite the first side, and a thickness between the first side and the second side;
• a channel extending into the manifold on the second side, the channel having a first wall, a second wall opposite the first wall, a base wall extending between the first wall and the second wall, and a depth measured from the second side of the manifold to the base wall of the channel, the depth of the channel less than the thickness of the manifold, wherein the first wall and the second wall are perpendicular to the first side of the manifold and the base wall is parallel to the first side of the manifold;
• and
• a spacer fabric disposed in the channel, the spacer fabric comprising:
• a first fabric layer coupled to the first wall of the channel, the first fabric layer having a first face perpendicular to the first side of the manifold;
• a second fabric layer coupled to the second wall of the channel, the second fabric layer having a second face perpendicular to the first side of the manifold;
• and
• a spacer layer coupled to and extending between the first fabric layer and the second fabric layer;
• wherein a portion of each of the first fabric layer and the second fabric layer are at the second side of the manifold.

A dressing for treating a tissue site with negative pressure, the dressing comprising:

• a tissue interface having a first side configured to face the tissue site, a second side opposite the first side, and a thickness between the first side and the second side, the tissue interface comprising:
• two or more strips of spacer fabric, each of the two or more strips of spacer fabric having:
• a first fabric layer having a first face, the first face perpendicular to the first side of the tissue interface;
• a second fabric layer having a second face, the second face perpendicular to the first side of the tissue interface;
• and
• a spacer layer comprising one or more yarns interknitted with the first fabric layer and the second fabric layer;
• and
• a manifold between each strip of spacer fabric, the manifold and the two or more strips of spacer fabric coupled to one another.