Abstract: In some illustrative examples, a bridge suitable for treating a tissue site may include a bridge sealing member and one or more bridge wicking layers. The bridge sealing member may extend along a length of the bridge, and may define an internal passageway in fluid communication between a receiving end of the bridge and a transmitting end of the bridge. The one or more bridge wicking layers may be disposed within the internal passageway of the bridge sealing member. Other apparatus, systems, and methods are disclosed.

Abstract: Disclosed embodiments relate to devices and systems for providing both negative-pressure therapy and instillation, In some embodiments, both negative-pressure and instillation may be provided to a tissue site in a low-profile context that may also prevent siphoning of instillation fluid during negative pressure application. For example, a single bridge may include a negative-pressure pathway with supports and an instillation pathway, and the instillation pathway may be configured with respect to the negative-pressure pathway so that at least a portion of the instillation pathway collapses upon application of negative pressure to the negative-pressure pathway. Collapse of at least a portion of the instillation pathway may be sufficient to close the instillation pathway.

Abstract: An apparatus for promoting circulation through a subcutaneous lymph vascular network may comprise a first manifold layer, a second manifold layer coupled to the first manifold layer, and a cover layer coupled to the second manifold layer. The first manifold may have a first stiffness, and the second manifold may have a second stiffness greater than the first stiffness. In some embodiments, the apparatus may additionally have a fluid interface configured to fluidly couple at least one of the first manifold layer and the second manifold layer to a fluid conductor through the cover layer. The fluid conductor may be coupled to or configured to be coupled to a source of negative pressure.

Abstract: An apparatus for promoting circulation through a subcutaneous lymph vascular network may comprise a first manifold layer, a second manifold layer coupled to the first manifold layer, and a cover layer coupled to the second manifold layer. The first manifold may have a first stiffness, and the second manifold may have a second stiffness greater than the first stiffness. In some embodiments, the apparatus may additionally have a fluid interface configured to fluidly couple at least one of the first manifold layer and the second manifold layer to a fluid conductor through the cover layer. The fluid conductor may be coupled to or configured to be coupled to a source of negative pressure.

Abstract: New and useful systems, apparatuses, and methods for providing negative-pressure therapy with instillation of topical treatment solutions are described. An apparatus may comprise an exudate container, a solution source, and a pneumatically-actuated instillation regulator. The instillation regulator may be coupled to the exudate container and to the solution source, and negative pressure from a negative-pressure source can actuate the instillation regulator. In some embodiments, a negative-pressure source may be configured for a negative-pressure interval and a venting interval, and the instillation regulator can be configured to draw instillation solution from the solution source during a negative-pressure interval and to instill the solution to a dressing during a venting interval.

Abstract: An evaporative bridge dressing that may be used with negative-pressure treatment of tissue. The evaporative bridge dressing may have one or more fluid transfer layers comprised of high-density wicking material enclosed between layers of film having high moisture-vapor transfer rates to reduce liquid storage and minimize pressure drop.

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. A pneumatic actuator may be mechanically coupled to a disposable distribution system that can provide a fluid path between the solution source and a distribution component. A bacterial filter may be disposed in the fluid path between the actuator and the distribution component to prevent contamination of the actuator during operation. The distribution system may be separated from the actuator and disposed of after operation, and the actuator may be re-used.

Abstract: A dressing interface for connecting a negative-pressure source to a dressing may have a coupling member comprising an aperture, a first adhesive region having a first region peel strength, and a second adhesive region having a second region peel strength less than the first region peel strength. The dressing interface may further have a flange coupled to the coupling member, and a conduit housing coupled to the flange and extending through the aperture in the contact layer.

Abstract: An apparatus for managing fluid from a tissue site may include a first portion and a second portion configured to be independently fluidly coupled to a tissue interface. The first portion can comprise a first end, a second end, a first fluid pathway extending from the first end to the second end, and a first plurality of features projecting into the first fluid pathway. The second portion can comprise a first end and a second end. The second portion can include a second fluid pathway, a third fluid pathway, and a fourth fluid pathway formed along a length of the second portion. The portion can also include a second plurality of features, a third plurality of features, and a fourth plurality of features projecting into the second fluid pathway, the third fluid pathway, and the fourth fluid pathway, respectively. Other apparatuses and methods are disclosed.

Abstract: A negative-pressure therapy device includes a formed front layer, a pump, a pressure transducer, a formed rear layer, an exhaust port, a negative-pressure port, and an atmospheric pressure measurement port. The pump has a fluid inlet and a fluid outlet. The pressure transducer is fluidly coupled to the ambient environment and the pump. The formed rear layer is configured to be coupled to the formed front layer to form an interior space having the pressure transducer and the pump disposed therein. The exhaust port is fluidly coupled to the fluid outlet of the pump. The negative-pressure port is fluidly coupled to the fluid inlet of the pump.

Abstract: Some illustrative embodiments of an instillation assembly for treating a tissue site may include a fluid distribution lumen and a fluid hub that may define a fluid instillation pathway. The fluid distribution lumen may be defined by a first film layer and a second film layer, and the fluid hub may be positioned in fluid communication with the fluid distribution lumen. The instillation assembly may be used in combination with a reduced-pressure assembly that may define a reduced-pressure pathway separate from the fluid instillation pathway.

Abstract: In some embodiments, a dressing assembly may include a dressing bolster, an interface seal, and a base layer. The dressing bolster may include a first side, a second side, and a periphery. The interface seal may be coupled at the periphery of the dressing bolster. The base layer may include a base layer flange configured to be coupled to the dressing and to extend beyond the periphery of the dressing bolster. The dressing assembly may be suitable for treating a tissue site with reduced pressure and for creating an apposition force between a first portion of the tissue site and a second portion of the tissue site. Other systems, apparatus, and methods are disclosed.

Abstract: Systems, apparatuses, and methods for providing negative pressure and/or instillation fluids to a tissue site. 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, an apparatus includes a dressing interface or connector that includes a pH sensor, a humidity sensor, a temperature sensor and/or a pressure sensor embodied on a single pad within the connector and proximate the tissue site to provide data indicative of acidity, humidity, temperature and pressure. Such apparatus includes algorithms for processing such data for detecting leakage and blockage as well as providing information relating to the progression of healing of wounds at the tissue site.

Abstract: In some illustrative examples, a bridge suitable for treating a tissue site may include a bridge sealing member and one or more bridge wicking layers. The bridge sealing member may extend along a length of the bridge, and may define an internal passageway in fluid communication between a receiving end of the bridge and a transmitting end of the bridge. The one or more bridge wicking layers may be disposed within the internal passageway of the bridge sealing member. Other apparatus, systems, and methods are disclosed.

Abstract: One implementation of the present disclosure is a negative pressure wound therapy (NPWT) system, according to some embodiments. In some embodiments, the system includes an instillation system configured to provide instillation fluid to a wound site, and a controller. In some embodiments, the wound site includes a wound and a wound dressing. In some embodiments, the controller is configured to provide a first quantity of instillation fluid for a first instillation cycle. In some embodiments, the controller is configured to determine a second quantity of instillation fluid for a second instillation cycle based on the first quantity and a reduction factor. In some embodiments, the second quantity of instillation fluid is less than the first quantity of instillation fluid. In some embodiments, the controller is configured to adjust an operation of the instillation system to provide the second quantity of instillation fluid to the wound site.

Abstract: This disclosure describes devices, systems, and methods related to two-piece dressings. In one aspect, a two-piece dressing includes a drape including a first light switchable adhesive, and a pad. The pad includes a second light switchable adhesive configured to couple the pad to the drape and a light source configured to emit light and activate at least the second light switchable adhesive. In another aspect a two-piece dressing includes a drape and a pad. The pad is configured to be coupled to the drape and to a light source, and the pad includes a light switchable adhesive configured to couple the pad to the drape. The light source is configured to emit light to activate the light switchable adhesive to decouple the pad from the drape, and the pad is configured to direct the light to activate second light switchable adhesive to decouple the drape from a tissue site.

Abstract: Some illustrative embodiments of an instillation assembly for treating a tissue site may include a fluid distribution lumen and a fluid hub that may define a fluid instillation pathway. The fluid distribution lumen may be defined by a first film layer and a second film layer, and the fluid hub may be positioned in fluid communication with the fluid distribution lumen. The instillation assembly may be used in combination with a reduced-pressure assembly that may define a reduced-pressure pathway separate from the fluid instillation pathway.

Abstract: In some illustrative examples, a bridge suitable for treating a tissue site may include a bridge sealing member and one or more bridge wicking layers. The bridge sealing member may extend along a length of the bridge, and may define an internal passageway in fluid communication between a receiving end of the bridge and a transmitting end of the bridge. The one or more bridge wicking layers may be disposed within the internal passageway of the bridge sealing member. Other apparatus, systems, and methods are disclosed.

Abstract: A system for providing negative-pressure therapy to breast tissue is disclosed. In some embodiments, the system may include a dressing assembly shaped for placement on a breast, an absorbent pouch, and a negative-pressure source. The system may further include an additional dressing assembly for placement on a second breast. Various shapes and configurations of the breast dressing assemblies may be included in the system.

Abstract: A dressing configured to provide radial or semi-radial expansion to a tissue site, which can increase the flow of fluids in and around the tissue site. The dressing may include an adhesive and a spring or biasing member that is able to expand radially while the dressing is worn, resulting in opening the tissue site to greater lymphatic flows. For example, the biasing member may partially or completely encircle the tissue site, allowing for radial force to be directed over the majority of the tissue site. The biasing member may have an unloaded state and a loaded state, and may be biased to the unloaded state. The dressing may also include a conformable layer between the biasing member and the adhesive. The conformable layer may conform to the contours of the anatomy of the patient. The conformable layer may increase the comfort of the dressing.