KCI Manufacturing Unlimited Company

Some examples of a dressing for treating a tissue site can include a manifold layer comprised of foam. The manifold layer can have a first side, a second side, and a thickness between the first side and the second side. The manifold layer can include a plurality of holes extending through the thickness of the manifold layer and being positioned at least in a first row and a second row. Each of the plurality of holes may have a hole length that is longer than and perpendicular to a hole width. The hole length of at least one of the holes in the first row may be positioned at an angle relative to the hole length of another of the holes in the second row. The manifold layer can be configured to prevent tissue in-growth and contract radially in all directions. Other apparatuses, dressings, systems, and methods are disclosed.

A pneumatic accumulator may be fluidly coupled between a negative-pressure source and a dressing of a therapy system. The pneumatic accumulator may have a small volume and one or more deformable members that can deform under negative pressure, reducing the volume of the pneumatic accumulator. The pneumatic accumulator can smooth a pressure wave created by the negative-pressure source. The pneumatic accumulator may also provide additional negative-pressure storage capacity to the therapy system. For example, if a leak develops at the dressing, some of the negative pressure stored in the pneumatic actuator may be supplied to the dressing. The pneumatic accumulator may allow for reduced runtime of the negative-pressure source, leading to increased electrical efficiency.

A dressing for treating a tissue site with negative pressure may have, in a relaxed state in which no external forces are applied to the dressing, both a first non-planar surface and a second non-planar surface opposite the first non-planar surface. The dressing may include a fluid management layer comprising a polymer film and a plurality of fluid restrictions extending through the polymer film and configured to deform. The dressing may also include a manifold layer coupled to the fluid management layer.

A liquid-collection canister for collecting liquid from a tissue site to which reduced pressure treatment is applied. The canister may include a canister body, a canister lid, a filter carrier, and a filter. The canister lid may define a liquid collection chamber with the canister body. The liquid collection chamber may include one or more internal walls configured to collect and be exposed to the liquid from the tissue site. The filter carrier may be suspended within the liquid collection chamber and separated from the internal walls. The filter may be coupled to the filter carrier and configured to allow gaseous communication with the liquid collection chamber and to prevent liquid from leaving the liquid collection chamber.

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.

A negative pressure wound therapy (NPWT) device includes a pneumatic pump, a single microphone, and a controller. The pneumatic pump is operable to draw a negative pressure at a wound dressing. The single microphone is configured to measure a sound level of an environment surrounding the NPWT device. The controller is configured to operate the pneumatic pump to draw the negative pressure at the wound dressing. The controller is further configured to obtain the sound level of the environment surrounding the NPWT device, and adjust operation of the pneumatic pump based on the sound level of the environment.

This disclosure describes devices, systems, and methods related to therapy devices that are operable in multiple operating modes. An exemplary therapy device is configured to be coupled to a patient and includes a stimulation generator and a controller coupled to the stimulation generator. The controller is configured to transition the stimulation generator from operating in a first operating mode to operating in a second operating mode responsive to determining activity of the patient.

An injury treatment system includes a negative pressure source and a dressing pneumatically communicable with the negative pressure source. The dressing includes a negative pressure therapy component configured to expose an anatomical structure to a negative pressure when the negative pressure therapy component is applied to the anatomical structure and in response to operation of the negative pressure source. The dressing also includes an immobilization component coupled to the negative pressure therapy system, wherein the immobilization component is configured to transition from a flexible state to an inflexible state in response to the operation of the negative pressure source.

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.

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.