Negative pressure wound therapy apparatuses and systems

A system for treating a tissue site with negative-pressure therapy, comprising:

• a dressing configured to be positioned adjacent to the tissue site, comprising:
• a carrier layer,
• a first film layer comprising a treatment region and a sealing region around the treatment region, a plurality of slits formed through the treatment region, a plurality of holes formed through the sealing region and including a larger open area than the plurality of slits, and a sealing adhesive covering the sealing region on a side of the first film layer configured to face the tissue site,
• a manifold, and
• a second film layer comprising an aperture, the second film layer coated with a pressure-sensitive adhesive on a side of the second film layer configured to face the tissue site;
• wherein the carrier layer, the first film layer, the manifold, and the second film layer are assembled in a stacked relationship with the first film layer and the second film layer enclosing the manifold, the manifold is aligned with the treatment region, the pressure-sensitive adhesive and the sealing adhesive are configured to face the tissue site, at least some of the pressure-sensitive adhesive is exposed through the plurality of holes, and the carrier layer is laminated to the second film layer on a side of the second film layer opposite the pressure-sensitive adhesive;
• and
• wherein a negative-pressure source is configured to be fluidly coupled to the tissue site through the aperture, the manifold, and the plurality of slits.