Abstract: Disclosed herein are embodiments of a wound treatment apparatus with electronic components integrated within a wound dressing. In some embodiments, a wound dressing apparatus can comprise a wound contact layer, an absorbent layer over the wound contact layer, the absorbent layer comprising one or more apertures, a cover layer configured to cover and form a seal over the wound contact layer and the absorbent layer, and an electronics assembly comprising a negative pressure source. A portion of the cover layer overlying the one or more apertures in the absorbent layer can be configured to be compressed within the aperture in the absorbent layer when negative pressure is applied to the wound dressing apparatus. The compressed cover layer can indicate a level of negative pressure below the cover layer. In some embodiments, the wound dressing apparatus can comprise an indicator material layer and a cover layer configured to cover and form a seal over the wound contact layer and the indicator material layer.

Abstract: A system for generating mist includes a vehicle with ventilation system, a misting device configured to atomized fluid to generate a variable amount of mist, and a fan configured to move the variable amount of mist through the ventilation system. The system further includes a particle sensor configured to measure particles and a controller in communication with the particle sensor, misting device, and fan, configured to receive a particle concentration from the particle sensor, compare it to a threshold, and control the variable amount of mist and/or the fan to keep the particle concentration greater than the threshold. A method for controlling mist in a vehicle includes pumping fluid to a misting device, generating a mist of fluid, pumping the mist into a vehicle ventilation system, measuring a particle concentration, and manipulating a misting device, pump, and/or fan using a controller to keep the particle concentration above a threshold.