Abstract: A wound therapy system includes a negative pressure circuit, a pump, a pressure sensor, and a controller. The negative pressure circuit applies negative pressure to a wound. The pump is fluidly coupled to the negative pressure circuit and produces a negative pressure at the wound or within the negative pressure circuit. The pressure sensor measures the negative pressure within the negative pressure circuit or the wound. The controller performs a testing procedure including a first drawdown period, a leak rate determination period, a vent period, and a second drawdown period. The controller is configured to receive one or more pressure measurements of the pressure sensor over the leak rate determination period to determine a leak rate parameter, monitor an amount of elapsed time over the second drawdown period to determine a drawdown parameter, and estimate a volume of the wound based on the leak rate parameter and the drawdown parameter.

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: 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: A customizable wound treatment system for treating multiple zones of a wound includes a dressing configured for use with a first zone and a second zone of a wound that includes a first foam layer placed over the first zone, a second foam layer placed over the second zone, a first drape layer disposed over the first foam layer and beneath the second foam layer, and a second drape layer disposed over the second foam layer. The customizable wound treatment system includes a negative pressure source pneumatically coupled to the first foam layer and the second foam layer and operable to create a negative pressure at the first zone and the second zone and a fluid instillation pump fluidly coupled to the first foam layer and configured to instill a treatment fluid to the first zone.

Abstract: The present disclosure relates to a network system. The system is formed by at least two negative pressure wound therapy (NPWT) devices. The first NPWT device includes a wireless radio, user interface, controller, and processing circuit. The wireless radio wirelessly communicates with the second NPWT device. The user interface displays operational status of therapy operation, receives a command of operational change from a user, and displays wireless radio connection strength between the first NPWT device and the NPWT device. The controller controls therapy operation of the first NPWT device based on input from the user interface. The processing circuit causes the wireless radio to communicate with the second NPWT device, determines wireless radio connection strength between the first NPWT device and the second NPWT device based on communication between the first NPWT device and the second NPWT device, and causes the user interface to display determined wireless radio connection strength.

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: The present disclosure relates to a network system. The system is formed by at least two negative pressure wound therapy (NPWT) devices. The first NPWT device includes a wireless radio, user interface, controller, and processing circuit. The wireless radio wirelessly communicates with the second NPWT device. The user interface displays operational status of therapy operation, receives a command of operational change from a user, and displays wireless radio connection strength between the first NPWT device and the NPWT device. The controller controls therapy operation of the first NPWT device based on input from the user interface. The processing circuit causes the wireless radio to communicate with the second NPWT device, determines wireless radio connection strength between the first NPWT device and the second NPWT device based on communication between the first NPWT device and the second NPWT device, and causes the user interface to display determined wireless radio connection strength.

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 cutting template for use with a negative pressure wound therapy system includes a substantially rigid body. The body includes a top surface, a bottom surface, a height, and a recess. The top surface is configured to engage a drape layer. The bottom surface is configured to engage a dressing layer. The height is defined between the top surface and the bottom surface. The height is configured to create a gap between the drape layer and the dressing layer. The recess is disposed substantially about a perimeter of the body. The recess is configured to receive an edge of a cutting tool so that an opening is formed in the drape layer when the edge is traversed about the perimeter.

Abstract: A wound therapy system includes a dressing an instillation pump fluidly communicable with the dressing and configured to provide instillation fluid to the dressing, a negative pressure pump fluidly communicable with the dressing and configured to remove air from the dressing, and a control circuit communicably coupled to the instillation pump and the negative pressure pump. The control circuit is configured to control the instillation pump to provide an amount of the instillation fluid to the dressing, provide a soak period, and control the negative pressure pump to provide a cyclic variation of negative pressure at the dressing.

Abstract: A dressing that includes a contact layer having walls defining a plurality of holes and a retainer layer comprising portions protruding into holes of a contact layer is provided herein. Systems, methods and kits using the dressing for debriding a tissue site are also provided herein.

Abstract: An apparatus for managing fluid from a tissue site may include a first layer and a second layer. The first layer may comprise a first end, a second end, a first surface, a thickness between the first surface and the second surface, a first fluid pathway disposed in the first surface, and a second fluid pathway disposed in the first surface. The first fluid pathway and the second fluid pathway can extend from the first end to the second end. The second layer may have a first end, a second end, a first surface, and a second surface. The second surface of the second layer can be coupled to the first surface of the first layer.

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: An apparatus for treating a tissue site comprising a negative-pressure source configured to be fluidly coupled to the tissue site; an instillation source configured to be fluidly coupled to the tissue site; and a controller operatively coupled to the negative-pressure source and to the instillation source. The controller can be configured to operate the negative-pressure source and the instillation source to intermittently deliver negative pressure to the tissue site for a negative-pressure interval and deliver instillation fluid to the tissue site for an instillation interval. A purge volume of instillation fluid may be delivered to the tissue site at a purge frequency. In some examples, the purge volume may be delivered through the second fluid conductor and removed through the first fluid conductor during a negative-pressure interval.

Abstract: An apparatus for distributing force across a tissue site including a film layer and an embossed layer. The film layer may include a first end and a second end, an aperture near the first end, and a notch extending from the second end to the aperture. The embossed layer may be coupled to the film layer near a periphery of the film layer to define an interior space.

Abstract: A tubeset module includes one or more elements of a negative pressure wound therapy (“NPWT”) system, such as a valve, a calibrated leak, a pressure sensor, etc. The tubeset module may communicate with a controller of the NPWT system via a communications interface provided by the tubeset module. The communication between the tubeset module and the controller may be used to fully automate one or more processes involving the operation of the components of the NPWT system included in the tubeset module, allowing the NPWT system to, e.g. estimate a wound site volume, estimate a volume of fluid to be instilled, monitor wound healing progression, etc. without requiring any user interaction or involvement. The tubeset module may be defined by one or more housing elements. The tubeset module may be incorporated into any of the tubing, fluid canister, wound dressing and/or therapy device housing components of the NPWT system.

Abstract: This disclosure describes a wound sealing film containing a first layer having a first surface and a second surface, said first layer contains a first polymer composition, a second layer having a first surface and a second surface, said second layer contains an adhesive, and a third layer having a first surface and a second surface, said third layer contains a polymeric gel, wherein the second layer is positioned between the first layer and the third layer, method of making and using the wound sealing film. In some aspects, a wound sealing film can contain a first layer containing a first polymer composition, and a combined layer containing a polymeric gel and an adhesive.

Abstract: A volume of a wound is estimated using a dynamic pressure response measured during instillation of fluid to the wound using a negative pressure wound therapy system. A previously estimated wound volume may be used to detect and prevent overfill of fluid to the wound during future instillation events. For example, real-time pressure measurements may be compared to model data representative of expected pressure at a wound having a volume equal to the previously estimated wound volume, with instillation being stopped if the observed pressure varies from the expected pressure. A comparison of a total volume of fluid instilled to the wound may also be compared to the previously estimated wound volume to prevent overfill. The comparison of wound volume estimated based on an instillation event may also be compared to a wound volume estimated using other methods to provide a higher confidence wound volume estimate.

Abstract: Dressings, systems, and methods for treating a tissue site are described. The dressing includes a contact layer having a first side and a second side. The first side of the contact layer configured to be positioned adjacent to the tissue site. The contact layer has a plurality of holes extending through the contact layer from the first side to the second side. The dressing includes a cover layer having a first side and a second side. The first side of the cover layer is coupled to the contact layer. The dressing also includes at least one retainer layer removably coupled to the second side of the cover layer.

Abstract: Apparatuses, systems, and methods for treating a tissue site are described. The apparatus includes a dressing for treating a tissue site. The dressing includes a contact layer having a first side and a second side configured to be positioned adjacent to the tissue site. A plurality of holes extend through the contact layer from the first side to the second side. The dressing also includes a retainer layer coupled to the first side of the contact layer.