A reduced-pressure system for delivering reduced pressure for medical purposes to a desired site and to receive fluids in one instance includes a reservoir having an interior space operable to contain the fluids. A reduced-pressure delivery conduit is placed in fluid communication with the interior space for delivering the reduced pressure to the desired site. A source conduit and a pressure sensor conduit are placed in fluid communication with the interior space. A pressure sensor is placed in fluid communication with the pressure sensor conduit. A reduced-pressure source is placed in fluid communication with the source conduit. A reduced-pressure control unit is associated with the pressure sensor and the reduced-pressure source and is operable to receive pressure data from the pressure sensor and supply data from the reduced-pressure source and to determine when a reservoir-full/blockage condition exists. Other systems and methods are presented.

An extraction arm for an extraction device includes a suction pipe and a suction head and defines a suction path that extends from an extraction region in the surroundings of the suction head through the suction pipe to the extraction device. The extraction arm includes an exchangeable filter which is arranged within the suction path. The filter is located in a filter housing which has a main body and a closable cover. The filter is exchangeable, which makes it very easy to prepare the extraction arm for a new application. Since the filter is arranged in front of the suction pipe, the suction pipe remains clean. The filter can easily be changed, whereby disinfection or cleaning of the suction pipe is not necessary.

A liquid-collection canister includes a liquid collection chamber defined by at least one wall and a first and second gas-communication pathway formed within the at least one wall. A first aperture is positioned between the first gas-communication pathway and the liquid collection chamber to allow gaseous communication between the liquid collection chamber and the first gas-communication pathway. A second aperture is positioned between the second gas-communication pathway and the liquid collection chamber to allow gaseous communication between the liquid collection chamber and the second gas-communication pathway. A first and a second liquid-air separator are positioned over the first aperture and the second aperture, respectively, to substantially prevent liquid passing through the first and second apertures.

A method and apparatus are disclosed for dressing a wound. The apparatus comprises a sealing layer comprising at least one orifice, an absorbent layer over the sealing layer, absorbing wound exude and a liquid impermeable, gas permeable filter layer over the absorbent layer.

In some examples, provided is a fluid blockage device for use with a reduced-pressure source for treating a tissue site with reduced pressure. The fluid blockage device may be configured to preclude fluid communication through a port fluidly coupled to the reduced-pressure source when the fluid blockage device contacts a liquid. Other devices, systems, and methods are disclosed.

Disclosed embodiments relate to apparatuses and methods for wound treatment. In some embodiments, a negative pressure source is incorporated into a wound dressing apparatus so that the wound dressing and the negative pressure source are part of an integral or integrated wound dressing structure that applies the wound dressing and the negative pressure source simultaneously to a patient's wound. The negative pressure source and/or electronic components may be positioned between a wound contact layer and a cover layer of the wound dressing. The negative pressure source and/or electronic components may be separated and/or partitioned from an absorbent area of the dressing. A switch may be integrated with the wound dressing to control operation of the wound dressing apparatus. A connector may be direct air from an outlet of the negative pressure source to the environment. A non-return valve may inhibit back flow of air into the wound dressing.

Surgical systems can include evacuation systems for evacuating smoke, fluid, and/or particulates from a surgical site. A surgical evacuation system can be intelligent and may include one or more sensors for detecting one or more properties of the surgical system, evacuation system, surgical procedure, surgical site, and/or patient tissue, for example.

Methods of assembling a manifold for a medical waste collection system. A flapper valve unit is secured to a head of a cap. A filter element is positioned within a shell. Basket hands of the filter element are fitted between first pairs of ribs of the cap skirt. Fingers of the shell are fitted between second pairs of ribs of the cap skirt. The cap is secured to the shell to cover an open distal end of the shell. A drip stop is secured to the proximal end base of the shell to seat within the outlet opening. Ears may be fitted through holes defined by the flapper valve unit and cap holes defined by the cap so as to snap lock to the head of the cap. The hub of the flapper valve unit may be compressed with the ears snap locked to the head of the cap.

Disclosed herein are several embodiments of a wound treatment apparatus employing a wound dressing for negative pressure wound therapy and methods of using the same. Some embodiments are directed to improved wound dressing to be applied to a wound site, for example a wound dressing including a three-dimensional filter element, and methods of using the same.

In some examples, provided is a fluid blockage device for use with a reduced-pressure source for treating a tissue site with reduced pressure. The fluid blockage device may be configured to preclude fluid communication through a port fluidly coupled to the reduced-pressure source when the fluid blockage device contacts a liquid. Other devices, systems, and methods are disclosed.