Wound cleansing apparatus with stress

摘要

An apparatus for cleansing wounds with means for stressing the wound bed and optionally tissue surrounding the wound, in which irrigant fluid from a reservoir connected to a conformable wound dressing and wound exudate from the dressing are recirculated by a device for moving fluid through a flow path which passes through the dressing and a means for fluid cleansing and back to the dressing. The cleansing means (which may be a single-phase, e.g. micro-filtration, system or a two-phase, e.g. dialytic system) removes materials deleterious to wound healing, and the cleansed fluid, still containing materials that are beneficial in promoting wound healing, is returned to the wound bed. The means for stressing the wound bed and optionally tissue surrounding the wound promotes wound healing. The dressing and a method of treatment using the apparatus.

主权项

1. A method of treating a wound, comprising:
applying a cyclically varying negative pressure to the wound in accordance with a sinusoidal waveform that varies relative to a baseline pressure, wherein the wound is covered at least partially by a conformable wound dressing configured to form at least a relatively fluid tight seal around at least a portion of the wound, wherein applying the cyclically varying negative pressure to the wound in accordance with the sinusoidal waveform comprises varying the sinusoidal waveform to include first and second maximum amplitudes of negative pressure, the first maximum amplitude different from the second maximum amplitude, wherein the cyclically varying negative pressure applied to the wound is below atmospheric pressure.