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 dressing assembly with an inner ventral surface and an outer dorsal surface, the wound dressing assembly comprising:
a first netting layer with a ventral side serving as the ventral surface of the wound dressing assembly configured for placement over a wound; a covering layer with a dorsal side positioned away from the wound; a second netting layer positioned between the first netting layer and the covering layer; a tubing layer positioned between the first netting layer and the second netting layer, the tubing layer comprising a plurality of radially extending tubes positioned between an upper surface of the first netting layer and a lower surface of the second netting layer, the plurality of radially extending tubes of the tubing layer extending outwardly from a central connection junction toward a periphery of the first and second netting layers and being in fluidic communication with the central connection junction that is connectable to one of a source of irrigant and a vacuum source; and a vacuum interface chamber for connecting with the vacuum source, the vacuum interface chamber defining an internal space in communication with a plurality of openings along a ventral face or a side surfaces of the vacuum interface chamber for distributing negative pressure from the vacuum source, wherein the vacuum interface chamber is positioned below a central region of the covering layer and above the first netting layer, the second netting layer, and the tubing layer.