Abstract: Dressings for use in negative pressure therapy and methods of making the dressings are provided herein. The dressings may comprise at least two layers in a stacked configuration. The first layer may comprise a manifold layer and the second layer may comprise a silicone gel layer. The second layer may have perforations to form fluid restrictions that can open and close when used in negative pressure therapy. The perforated second layer may be formed by a first and a second curing step.

Abstract: A wound fluid collection system includes a canister with a chamber fluidly connected to a wound dressing in a tissue site through an inlet and also fluidly connected to a reduced pressure source through an outlet. At least a portion of the canister is collapsible and yet can be maintained in an extended state when exposed to subatmospheric pressure. The canister is releasably attachable to a supporting member.

Abstract: Systems and methods for treating a plurality of tissue sites include a multi-port therapy unit. The multi-port therapy unit includes a plurality of patient-side ports each fluidly coupled to a plurality of conduits and a fluid reservoir fluidly coupled to the plurality of ports. A plurality of pressure sensors are associated with the plurality of patient-side ports to determining a pressure associated with each conduit. A controller is operatively coupled to the plurality of pressure sensors to receive treatment pressure data, monitor pressure for each pressure sensor of the plurality of pressure sensors, and signal an alarm condition if the pressure is outside of a pre-selected range. The system includes a reduced-pressure source fluidly coupled to a dressing at each tissue site through the multi-port therapy unit.

Abstract: Systems, apparatuses, and methods for instilling fluid to a tissue site in a negative-pressure therapy environment are described, Illustrative embodiments may include a pneumatically-actuated instillation pump that can draw a solution from a solution source during a negative-pressure interval, and instill the solution to a dressing during a venting interval. In one example embodiment, a system for providing negative-pressure and instillation to a tissue site may comprise a negative-pressure device and an instillation device. The negative-pressure device may comprise a negative-pressure source and a controller electrically coupled to the negative-pressure source. The instillation device may comprise a dosing valve having a dosing chamber including a dosing outlet configured to be fluidly coupled to a fluid port and a dosing inlet configured to be fluidly coupled to a source of instillation solution.

Abstract: A negative pressure wound treatment (NPWT) system including a NWPT therapy unit and a wound dressing configured to overlay a wound bed. The NPWT system includes a first length of tubing comprising a first end and a second end, the first end of the first length of tubing coupled to the NWPT therapy unit and the second end of the first length of tubing having a first coupling half, as well as a second length of tubing having a first end and second end, the first end of the second length of tubing coupled to the wound dressing and the second end of the second length of tubing having a second coupling half. The NPWT system includes an inline filter comprising a sintered polymer and a superabsorbent material, and an inline coupling, wherein the inline coupling is configured to operably couple and de-couple the NPWT therapy unit and wound dressing.

Abstract: Systems, apparatuses, and methods for providing negative pressure with instillation fluids to a tissue site are disclosed. Some embodiments are illustrative of an apparatus or system for delivering negative-pressure and/or therapeutic solution of fluids to a tissue site, which can be used in conjunction with sensing properties of fluids extracted from a tissue site and/or instilled at a tissue site. For example, a system may comprise a tissue interface adapted to be coupled to a source of instillation fluid and a dressing interface having a therapy cavity that includes a pH sensor to provide data indicative of acidity/alkalinity at the tissue site. Such apparatus may further comprise algorithms for processing such data for providing information relating to the progression of healing of wounds at the tissue site.

Abstract: Systems, methods, and apparatuses for generating and releasing iodine are described. Some embodiments may include a dressing member including a plurality of iodine-forming reagents and a water-swellable material. In some embodiments, the dressing member may include water-swellable fibers. The water-swellable fibers may each include a water-swellable material in which iodine-forming reagents are dispersed. As liquid comes into contact with and is absorbed by the water-swellable material, the iodine-forming reagents may come into contact with each other, causing an iodine-forming reaction to occur, producing iodine.

Abstract: Disclosed embodiments relate to devices and systems for providing negative-pressure therapy, instillation, and/or pressure-sensing at a tissue site, and to methods of manufacturing such devices and systems. In some embodiments, a fluid bridge may comprise a first layer of foam with a plurality of supports extending from at least an inner surface, and a second layer. The first and second layers may be coupled together around the perimeter to form one or more enclosed fluid pathways, for example extending from a port to an aperture. In some embodiments, at least the first layer may be formed of closed-cell foam.

Abstract: A dressing for treating a tissue site may include a base layer, a sealing member, a first and a second wicking layer, and an absorbent layer. The base layer may have a periphery surrounding a central portion and a plurality of apertures disposed through the periphery and the central portion. The apertures in the periphery may be larger than the apertures in the central portion. The sealing member and the base layer may define an enclosure. The first and the second wicking layer may each be disposed in the enclosure with the absorbent layer positioned between the first and the second wicking layer. Other dressings, systems, and methods are disclosed.

Abstract: In some examples, provided is a fluid blockage device for use with a reduced-pressure source for treating a tissue site with reduced pressure. The fluid blockage device may be configured to preclude fluid communication through a port fluidly coupled to the reduced-pressure source when the fluid blockage device contacts a liquid. Other devices, systems, and methods are disclosed.

Abstract: In one example embodiment, an apparatus may include a panel with integrated fluid channels, wherein the panel and the fluid channel consist only of surfaces that can be manufactured with a straight-pull mold. A port may also be integrated into the panel to facilitate coupling the fluid channel to pneumatic components in an assembly. A seal may be secured to the panel over the fluid channel to form an integrated fluid conductor. The seal is preferably an adhesive label that can also be used for product labeling. Such an apparatus may be used in a control unit of a therapy system, employing several integrated fluid conductors. A method of manufacturing may include molding a panel, wherein the mold forms a channel integral to the panel. The panel and the channel preferably consist of surfaces that can be molded with a straight-pull mold.

Abstract: A fluid delivery system, method, and apparatus for providing instillation therapy with a negative-pressure source is described. The apparatus includes a housing having an ambient chamber and a negative-pressure chamber fluidly isolated from each other. The apparatus also includes a moveable barrier disposed in the housing between the ambient chamber and the negative-pressure chamber. The moveable barrier is operable to move between a charge position and a discharge position in response to negative pressure. A fluid source is disposed in the negative-pressure chamber and is collapsible in response to movement of the moveable barrier to the discharge position. The apparatus also includes a fluid outlet in fluid communication with the fluid source, a negative-pressure port in fluid communication with the negative-pressure chamber and configured to be coupled to a negative-pressure source, and a vent formed in the housing and fluidly coupled to the ambient chamber.

Abstract: As an example, in some embodiments is a dressing that may comprise a manifold, a bioresorbable component, and a degradation-modulating component. The degradation-modulating component may cover two or more surfaces of the bioresorbable component. The degradation-modulating component may be further configured to modulate degradation of the bioresorbable component.

Abstract: Dressings for treating a tissue site with instillation therapy are disclosed, which may include a dressing having a first layer comprising a polymer film having a plurality of fluid restrictions through the polymer film and a second layer comprising a polymer having a plurality of apertures. The second layer is adjacent to the first layer. The dressing may include an adhesive layer on at least a portion of the first layer. Further, the dressing may include a third layer on the adhesive layer, the third layer being at least partially removable from the adhesive layer so as to expose a portion of the adhesive.

Abstract: Systems, methods, and apparatuses for irrigating a tissue site are described. The system can include a tissue interface and a sealing member configured to be placed over the tissue site to form a sealed space, and a negative-pressure source fluidly coupled to the sealed space. The system includes an irrigation valve having a housing, a piston disposed in the housing, a fluid inlet to fluidly couple a fluid inlet chamber to a fluid source, and a fluid outlet to fluidly couple a fluid outlet chamber to the sealed space. A piston passage extends through the piston and fluidly couples the fluid inlet chamber and the fluid outlet chamber, and a biasing member is coupled to the piston to bias the irrigation valve to a closed position. The negative-pressure source is configured to move the piston between the closed position and an open position to draw fluid to the sealed space.

Abstract: A tissue interface for treating a tissue site and systems and methods of manufacturing the same are described. The tissue interface can include a plurality of shapes and a plurality of ribs. Each rib of the plurality of ribs can have a first end coupled to a respective shape of the plurality of shapes and a second end coupled to at least one other rib of the plurality of ribs. The tissue interface can also include a sheet of felted open-cell foam and a plurality of holes formed in the sheet. Each hole can extend through the sheet. Each hole can have a first end and a second end joined by a gauge section. The first end and the second end can form shoulders that are wider than the gauge section.

Abstract: A treatment system for applying negative pressure to a tissue site in conjunction with a venting or purging capability. In some embodiments, the treatment system may include a reduced-pressure source, an inline storage pouch, a purge chamber, and a dressing. Reduced-pressure may be supplied to the inline storage pouch and the dressing, while the purge chamber may provide a ventilation opening to the atmosphere.

Abstract: Disclosed embodiments may relate to negative-pressure therapy, which may collect exudate from a tissue site. In some embodiments, a multi-canister module may allow a single negative-pressure source to draw exudate into two or more canisters. In some embodiments, pressure sensing may take place alongside negative-pressure treatment. In some embodiments, the multi-canister module may be configured to allow for one of the canisters to be changed without interrupting negative-pressure therapy.

Abstract: In some embodiments, a dressing may comprise a treatment device configured with a central hub and a plurality of legs extending out from the central hub. In some embodiments, the central hub and legs may jointly comprise a treatment manifold configured to minimize tissue in-growth. For example, the treatment manifold may comprise closed-cell foam. In some embodiments, the treatment manifold may be unencapsulated. For example, a single film layer may be attached to a first surface of the treatment manifold, while an opposite surface of the manifold may be exposed and/or uncovered. Other apparatus, dressings, systems, and methods are also disclosed.

Abstract: An indicator, wound dressing system, and negative pressure wound treatment kit configured to provide near real-time, dynamic indication of the fluid status (e.g., fill level, fluid absorbency capacity) of an article is described according to various embodiments. The indicator for detecting a fluid status of a wound dressing may include at least (i) a top side comprising PVDF and one or more markings configured to show fluid levels (ii) a bottom side comprising a pattern-printed adhesive, and (iii) a buffer layer, wherein the buffer layer has a top side comprising a polyurethane film and a bottom side comprising a film retention adhesive. Methods of using the indicator, wound dressing system, and kit are also provided herein.