A negative pressure assembly includes a drape, a sealing element, a reactor, a valve and a mechanical pump assembly. The drape and the sealing element, when applied to the skin, cooperate to define an enclosed volume. The reactor is located so as to be in fluid communication with the enclosed volume when the drape is covering the dressing site. The reactor reacts with a selected gas found in air to consume the selected gas. The valve has a first operating state in which gas is drawn from the enclosed volume through the valve. The mechanical pump assembly includes a pump chamber fluidly connectable to the enclosed volume through the valve when the valve is in the first operating state. The mechanical pump is configured to fluidly connect with the enclosed volume and draw air from the enclosed volume into the pump chamber.

Embodiments of negative pressure wound therapy systems, apparatuses, and methods for operating the systems and apparatuses are disclosed. In some embodiments, a medical device is configured to detect an identity of a patient-contacting disposable connected to the medical device. The medical device automatically modifies one or more operational parameters of the medical device based on the identity of the patient-contacting disposable connected to the medical device. The medical device can include a user interface and modify automatically available selections in the user interface based on the identity of the patient-contacting disposable connected to the medical device.

A wound therapy apparatus is disclosed that includes a wound interface securable to a skin surface around a wound bed to form an enclosed space over the wound bed that is fluid-tight. The wound therapy apparatus-may include a dressing engaged with the wound interface to contact the wound bed. A spacer may be disposed within the enclosed space proximal of the dressing to define a plenum between portions of the wound interface and a proximal side of the dressing. Gas within the enclosed space may have an O.sub.2 concentration greater than the O.sub.2 concentration in atmospheric air. The dressing may include a hydrophobic material, hydrophobic material, or a distal layer comprised of silicone having fenestrations therein, in various aspects. The pressure p.sub.0 within the enclosed space may vary over a pressure range p.sub.minp.sub.0p.sub.max. Related methods of use are also disclosed.

A suction-based medical dressing assembly and method of dermal irrigation provides a flexible tube that is fluidly coupled to at least two bifurcated tube portions defined by a plurality of apertures. The tube has a proximal end opening for discharging ambient fluid. The length of the bifurcated tube portions is surrounded by an absorbent gauze material covered substantially with an occlusive sheet material, and having an adhesive strip thereon. A vacuum assembly creates a negative pressure in the tubes. The ambient fluid is absorbed by the absorbent material, and the negative pressure sucks the fluid through the apertures in the bifurcated tube portions for discharge through the opening in the tube. In operation, a patient applies the adhesive side of the occlusive device to the skin where liquid removal is desired and activates the vacuum-inducing source, thereby causing fluid runoff from the patient to be effectively removed for disposal.

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 pump assembly can present graphical user interface screens for controlling and monitoring delivery of negative pressure. The system can be configured to efficiently deliver negative pressure and to detect and indicate presence of certain conditions, such as low pressure, high pressure, leak, canister full, and the like. Monitoring and detection of operating condition can be performed by measuring one or more operational parameters, such as pressure, flow rate, and the like.

Methods and devices for treatment of damaged tissue are disclosed, including treatment of wounds by employing non-electrically powered, reduced pressure therapy devices. Maintenance and control of the sub atmospheric pressure exerted may be provided by such devices while minimizing discomfort to the user. The devices may be configured to be worn inconspicuously underneath clothing.

This invention provides wound healing systems, which delivers oxygen to the wound bed and applies negative pressure thereto, where the source of oxygen and negative pressure are simultaneously applied to distal sites of the dressing. Methods of treating wounds and methods of treating or preventing anaerobic infection of wounds using such systems are described.

Embodiments of a 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 pump assembly can present graphical user interface screens for controlling and monitoring delivery of negative pressure. The system can be configured to efficiently deliver negative pressure and to detect and indicate presence of certain conditions, such as low pressure, high pressure, leak, canister full, and the like. Monitoring and detection of operating condition can be performed by measuring one or more operational parameters, such as pressure, flow rate, and the like.

Methods and devices for treatment of damaged tissue are disclosed, including treatment of wounds by employing non-electrically powered, reduced pressure therapy devices. Maintenance and control of the sub atmospheric pressure exerted may be provided by such devices while minimizing discomfort to the user. The devices may be configured to be worn inconspicuously underneath clothing.

Methods and devices for treatment of damaged tissue are disclosed, including treatment of wounds by employing non-electrically powered, reduced pressure therapy devices. Maintenance and control of the sub atmospheric pressure exerted may be provided by such devices while minimizing discomfort to the user. The devices may be configured to be worn inconspicuously underneath clothing.