A negative pressure device for applying to skin is configured to define a sealed enclosed three-dimensional space when at least a portion of the device is sealed against the skin. The device includes a body including at least one expandable segment that is configured to expand after the device has been sealed against the skin.

A bodily fluid collection system includes a reduced pressure treatment unit for providing reduced pressure to a fluid collection system through a canister having a container with an inlet adapted to be fluidly coupled to the fluid collection system, an outlet adapted to be connected to a source of reduced pressure, and an absorptive lamination disposed within the container. The absorptive lamination may be formed from a plurality of absorptive layers and wicking layers interleaved between the absorptive layers that collectively manifold bodily fluids from a tissue site into and throughout the absorptive lamination to trap and collect the bodily fluids. The container expands as the absorptive lamination swells with the bodily fluid being collected.

The invention relates to a system for drainage of fluids or wound secretion from body and/or tissue openings of the human or animal body comprising a bag-like reservoir for collecting the fluid or wound secretion, with an upper inlet opening and a lower outlet opening, and a pre-evacuated container with an inlet opening, wherein the inlet opening of the pre-evacuated container is connected to the lower outlet opening of the bag-shaped reservoir.

Systems, devices, and methods related to wound therapy are disclosed. Different aspects of wound care, including mechanical wound therapy, wound monitoring, irrigation, debridement, and delivery of therapies to the wound surface can be combined to improve effectiveness of treatment. The disclosed techniques can provide various type of clinical applications of wound therapies, including reverse pulse lavage, gas therapy, bacterial count measurements, pressure-based ulcer prevention, pain management, peritoneal dialysis, and controlled tissue in-growth, among others. In some instances, the systems described herein can be made portable and operable without the use of electricity, which provides potential to provide mechanical wound therapy in settings without access to extensive clinical facilities.

Embodiments of negative pressure wound therapy systems and methods for operating the systems are disclosed. In some embodiments, a system includes a pump assembly, canister, and a wound dressing configured to be positioned over a wound. The pump assembly, canister, and the wound dressing can be fluidically connected to facilitate delivery of negative pressure to a wound. The system can additionally include a valve configured to control the introduction of positive pressure to the wound.

The present invention provides a manually operated negative pressure wound treatment (NPWT) apparatus for suction of bodily fluids using the negative pressure generated by means of manual pressing. The NPWT apparatus is made of two parts: [1] top functional part; and [2] bottom collector part. The top functional part is made of a pressing mechanism attached to a bellow enclosed within an enclosure. The bellow is connected to the wound dressing using an external medical tube through a one-way check valve, wherein the negative pressure gets created within the bellows when compressed by manually pressing the mechanism. The negative pressure of the bellows sucks the bodily fluid from the wound, which promotes a new blood supply, cleaning infection, and accelerates healing dramatically. The bottom collector part is attached with the bellow through the internal one-way valve, wherein the collector collects the fluid from the bellow when the piston is pressed in the next cycle. Pressure levels and wound conditions are measured and transmitted to the user's smart device, in order to enhance treatment monitoring and efficacy.

In some embodiments, a negative pressure wound therapy system can detect and classify one or more operational conditions, including detection of a wound bleeding. The system can react to detection of blood by providing an indication, reducing the intensity or stopping therapy, releasing negative pressure, etc. In certain embodiments, the system can detect one or more additional operational conditions, such as change in vacuum pressure, gas leak rate change, exudate flow rate change, water flow rate change, presence of exudate, presence of water, etc. The system can detect and distinguish between different operational conditions and provide indication or take remedial action.

Devices and methods herein remove water from human or animal biological waste fluids using one or more forward osmosis filters. The devices allow for the volume of liquid or semi-liquid waste, including potentially infectious liquid waste, to be filtered to reduce potential exposure of healthcare staff to infectious liquid waste. On a hospital, healthcare staff, or individual patient basis, removing water and concentrating the waste can reduce challenges in management and disposal of the waste. Devices herein use forward osmosis to manage and filter, using one or more suitably sized filter(s), biological fluid exudate from wounds. The devices can be constructed to transport water present in the exudate away from a wound. The wound treatment devices herein not only allow for fluid from wounds to be filtered but also provide structures that can protect wounds from external contaminants, including bacteria and viruses. The wound treatment devices can be incorporated into negative pressure wound therapy systems, if desired.

Devices and methods herein remove water from human or animal biological waste fluids using one or more forward osmosis filters. The devices allow for the volume of liquid or semi-liquid waste, including potentially infectious liquid waste, to be filtered to reduce potential exposure of healthcare staff to infectious liquid waste. On a hospital, healthcare staff, or individual patient basis, removing water and concentrating the waste can reduce challenges in management and disposal of the waste. Devices herein use forward osmosis to manage and filter, using one or more suitably sized filter(s), biological fluid exudate from wounds. The devices can be constructed to transport water present in the exudate away from a wound. The wound treatment devices herein not only allow for fluid from wounds to be filtered but also provide structures that can protect wounds from external contaminants, including bacteria and viruses. The wound treatment devices can be incorporated into negative pressure wound therapy systems, if desired.

A wound treatment appliance is provided for treating all or a portion of a wound. In some embodiments, the appliance comprises an impermeable flexible overlay that covers all or a portion of the wound for purposes of applying a reduced pressure to the covered portion of the wound. In other embodiments, the impermeable flexible overlay comprises suction assistance means, such as channels, which assist in the application of reduced pressure to the area of the wound and removal of exudate from the wound. In other embodiments, the wound treatment appliance also includes a vacuum system to supply reduced pressure to the wound in the area under the flexible overlay. In yet other embodiments, the wound treatment appliance also includes wound packing means to prevent overgrowth of the wound or to encourage growth of the wound tissue into an absorbable matrix comprising the wound packing means. In still other embodiments, the appliance may include a suction drain. In other embodiments, the appliance may include a collection chamber to collect and store exudate from the wound. In yet other embodiments, a suction bulb may be used to provide a source of reduced pressure to an impermeable overlay that covers all or a portion of the wound. Finally, methods are provided for using various embodiments of the wound treatment appliance.