Dressings, systems, and methods for treating a tissue site on a patient involve allowing liquids from the tissue site or a priming fluid to evaporate and exit the dressing through a liquid-impermeable, vapor-permeable membrane. The dressing is able to process more liquids than would otherwise be possible without evaporation and potentially to create reduced pressure. Other dressings, systems, and methods are disclosed.

This invention relates to heat and moisture exchange (HME) materials, particularly for use in heat and moisture exchange with respiratory gases, and methods for their manufacture. The invention provides an improved HME material (10a) comprising a plurality of discrete protrusions (510), as opposed to continuous ridges or corrugations, extending from at least part of one surface of the HME material (10a), and to an associated manufacturing method.

A fluid dispenser device comprising: a reservoir (10) containing fluid; a dispenser head (20) that is provided with a dispenser orifice (21); dispenser means (25) for dispensing at least a fraction of said fluid through said dispenser orifice (21); and passage means (40) for connecting said reservoir (10) to said dispenser orifice (21) on actuation of said dispenser means (25), said device further comprising at least one porous insert (50) that is made out of porous material so as to suck up, in particular by capillarity, and to trap, at least in part, any residual fluid after actuation; said reservoir (10) including a stopper (25) that closes said reservoir (10) in leaktight manner before actuation.

An exchanger conduit permits temperature and/or humidity conditioning of a gas for a patient respiratory interface. In an example embodiment, a conduit has a first channel and a second channel where the first channel is configured to conduct an inspiratory gas and the second channel configured to conduct an expiratory gas. An exchanger is positioned along the first channel and the second channel to separate the first channel and the second channel. The exchanger is configured to transfer a component (e.g., temperature or humidity) of the gas of the second channel to the gas of the first channel. In some embodiments, an optional flow resistor may be implemented to permit venting at pressures above atmospheric pressure so as to allow pressure stenting of a patient respiratory system without a substantial direct flow from a flow generator of respiratory treatment apparatus to the patient during patient expiration.

Provided herein are systems and methods for monitoring one or more health or physiological parameters in a subject. The systems and methods may comprise a patch coupled to an injector. Data may be transmitted to a mobile device or remote server, where the data may be processed. Processed data may be used to inform a subject on a health or physiological condition.

A headgear component for a patient interface device includes a member having a first surface and a second surface opposite the first surface, the member including at least one of a textile material and a foam material, the member having a plurality of vent holes extending therethrough, and a plurality of moisture wicking members provided on the first surface, the moisture wicking members covering the vent holes and being made of a hydrophilic material.

An intravenous delivery system may have a liquid source containing a liquid, tubing, and a vent cap. The tubing may be connected to the liquid source and the vent cap to convey liquid from the liquid source to the vent cap. The vent cap may have a vent that is substantially impermeable to the liquid and permeable to air, and therefore releases air from the liquid from the vent cap. The vent cap may also have a chamber in communication with the vent. The chamber may have a volume selected to enable the chamber to receive a quantity of liquid from the tubing in which the air, if entrained in the liquid, is likely to reside after the tubing has been primed with the liquid.

The invention relates to the providing of hydrophobic and hydrophilic polymer-based hollow fiber membranes containing a water-insoluble antioxidant; in particular, the invention relates to the providing of hollow fiber membranes for the extracorporeal treatment of blood, wherein the hollow fiber membranes have improved biocompatibility relative to treatment blood, in particular improved complement activation and lower platelet loss vis--vis treatment blood. At the same time, the elution of hydrophilic polymers from the lumen of the hollow fiber membrane is reduced.

In an example is a system for treating a tissue site. The system may comprise a container having a liquid reservoir adapted to be fluidly coupled to the dressing. The container may comprise a liquid-degradable component configured to allow gas communication between the liquid reservoir and an external environment upon a liquid level within the liquid reservoir reaching a predetermined level. The liquid-degradable component may also be configured to restrict gas communication between the liquid reservoir and the external environment prior to the liquid level within the liquid reservoir reaching the predetermined level. The container may also comprise a hydrophobic filter configured to allow gas communication and to restrict liquid communication between the liquid reservoir and the external environment. The system may also comprise a negative-pressure source adapted to be fluidly coupled to the container.

A moisture trap for removing liquid from a fluid drawn from a tissue site treated with reduced pressure and systems and methods for using the same are described. The moisture trap may include a barrier adapted to be fluidly coupled to and define an indirect fluid path between a fluid reservoir and a reduced-pressure source. The barrier may have a hydrophilic surface. The moisture trap also may include a sump adapted to receive condensation from the barrier.