Mechanical wound therapy for sub-atmospheric wound care system

摘要

A mechanical wound therapy (MWT) system includes a connection for a vacuum source, which is routed through an airtight covering to a porous material positioned over the wound. The porous material may be a tubing network interspaced by a netting material constructed of biologically inert or bioabsorbable material. Alternatively, the porous material may be a layered unified dressing in which layers of mesh, netting or thin perforated film are separated and fixedly attached to functional elements of the dressing (e.g., irrigation tubing) or spacers. The vacuum and irrigation systems may be completely separated. An airtight sealing layer or foldable adhesive sealing layer may seal the dressing and facilitate sealing the dressing to the wound margins. Additional modular devices such as a wound approximating system, positive pressure bladders and adjuvant therapy modules as well as enhanced monitoring technology can be added to synergistically increase the capabilities of each dressing.

主权项

1. A negative pressure wound therapy dressing apparatus, comprising:
a central hub having interior walls defining a ventral-facing chamber to distribute a negative pressure to a wound and having a manifold with a first fluid line configured to connect to an irrigation fluid source and a second fluid line in communication with the ventral-facing chamber and configured to connect to a vacuum source; a multi-layered dressing assembly that is mechanically attached to the central hub, comprising:
a dorsal layer comprising an airtight film material and having an adhesive configured to bond with a region of skin surrounding a wound, at least a portion of the central hub passing through an aperture in a central region of the dorsal layer;an intermediate netting layer positioned below the dorsal layer and mechanically mounted directly to a portion of the central hub that is positioned below the dorsal layer;a ventral netting layer positioned below the intermediate netting layer and mechanically mounted to the central hub; andan irrigation tube layer positioned between the intermediate netting layer and the ventral netting layer and including a plurality of irrigation tubes in fluid communication with the first fluid line of the central hub.