A method of manufacturing a reduced-pressure abdominal treatment system for treating an open abdominal cavity is provided. In some embodiments, the reduced-pressure abdominal treatment system has an open-cavity treatment device for providing reduced-pressure treatment to an abdominal cavity; a deep-tissue closure device for applying a closing force on a deep-tissue wound; and a surface-wound closure subsystem for providing a closing force on a surface wound. The method of manufacturing may also include providing a reduced-pressure supply subsystem. A method of treatment using a reduced-pressure abdominal treatment system is also disclosed.

A dressing interface for a negative-pressure treatment system includes a housing. The housing includes an entry surface having first channels. The dressing interface also includes a primary conduit through the housing and terminating on the entry surface, an ancillary conduit through the housing and terminating on the entry surface, and a base coupled to the housing. The base includes an aperture, and a plurality of stand-offs having rounded surfaces. The stand-offs defines second channels configured to facilitate flow of liquid to the first channels through the aperture.

A system for providing instillation fluid to a deep abdominal wound includes an instillation module and a connection structure. The instillation module defines a first surface and a second, abdominal contents-facing surface. The instillation module includes a distribution hub configured to receive instillation fluid from an instillation fluid source. The connection structure includes a first surface, a second, abdominal contents-facing surface; and a flow path extending between the first surface and the second surface. The flow path includes an inlet configured to receive an instillation fluid conduit engaged with the instillation fluid source and an outlet in fluid communication with the instillation module. The flow path defines an axis extending between the inlet and the outlet. The flow path is configured to compress in a direction defined by the axis.

Some illustrative embodiments of a dressing for treating a tissue site may include a fluid hub, a plurality of elongate fluid members, and a separable joint. The plurality of elongate fluid members may be positioned in fluid communication with the fluid hub. Each of the plurality of elongate fluid members may include a proximal end, a distal end, and an elongate side between the proximal end and the distal end. The elongate side of the elongate fluid members may extend longitudinally outward from the fluid hub. The separable joint may be coupled between the elongate side of one of the plurality of elongate fluid members and the elongate side of another of the plurality of elongate fluid members. Other dressings, systems, and methods are disclosed.

The wound dressing apparatus facilitates administration of combined negative pressure and positive pressure treatment at a wound site. The wound dressing apparatus includes a wound dome having a substantially hollow dome interior, a manifold that is in fluid communication with the dome interior, a first passage adapted to connect to a negative pressure source to the dome interior, and a second passage adapted to connect to a positive pressure source to the manifold.

A wound closure system includes a porous mesh, a first pressure sensitive adhesive (PSA) applied to a top surface of the porous mesh, a removable first liner covering the first PSA, a second PSA applied to a bottom surface of the porous mesh, and a removable second liner covering the second PSA. The second PSA is stronger or denser than the first PSA. A method of using the wound closure system includes removing the second liner to expose the second PSA, pressing the second PSA against skin to approximate wound edges, removing the first liner to expose the first PSA, and pressing a therapeutic device against the first PSA to secure the therapeutic device to the porous mesh. A liquid adhesive is applied over the porous mesh and the therapeutic device, and then cured for binding the porous mesh to skin and binding the therapeutic device to the porous mesh.

Disclosed herein are apparatuses and methods for treating, a wound by applying reduced or negative pressure to the wound. The apparatus can include a wound cover, a fluid collection container, a vacuum pump, an inflation pump, and one or more conduits. The wound cover can be configured to move between at least a relatively rigid, generally raised position and a relatively flexible, generally collapsed position according to a predetermined program or in response to input from a user or one or more sensors. In some embodiments, the wound cover can be configured to move between at least the relatively rigid, generally raised position and the relatively flexible, generally collapsed position by adjusting the air pressure in one or more channels in the wound cover or by adjusting the length of piezoelectric or other length changing material supported by the wound cover.

A wound therapy apparatus disclosed herein includes a wound interface sealingly securable to a skin surface around a wound bed to form an enclosed space over the wound bed. An inflow fluid pathway and an outflow fluid pathway communicate fluidly with the enclosed space through an inflow port and an outflow port, respectively. The inflow port and the outflow port may be in spaced relation to define a flow path within the enclosed space equivalent in length to a characteristic length of the enclosed space. Pressure sensors may be in communication with the inflow fluid pathway and the outflow fluid pathway to detect inflow pressure p.sub.in, and outflow pressure p.sub.out.

Pump cassettes, wound-treatment apparatuses and methods. In some embodiments, a pump cassette comprises: a pump body having a pump chamber, an inlet valve in fluid communication with the pump chamber, and an outlet valve in fluid communication with the pump chamber; a diaphragm coupled to the pump body such that the diaphragm is movable to vary a volume in the pump chamber; and an identifier configured to store one or more properties of the pump cassette such that the identifier is readable by an automated reader to determine the one or more properties. In some embodiments, the pump cassette is configured to be removably coupled to a wound-treatment apparatus having an actuator such that the actuator can be activated to move the diaphragm.

A conduit for treating a tissue site with reduced pressure may include a primary lumen and at least one secondary lumen. A wall of the conduit may include a first wall material and a second wall material. The first wall material may comprise a substantially non-absorbent material that is vapor impermeable and liquid impermeable. The second wall material may comprise an absorbent material that is vapor permeable and liquid impermeable. The second wall material may be positioned in fluid contact with the at least one secondary lumen. Other systems, apparatus, and methods are disclosed.