Patent ID: 11957858
Assignee: 3M INNOVATIVE PROPERTIES COMPANY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A wound therapy system, comprising:
a dressing comprising:
a wound contact layer configured to minimize adherence of the dressing to a wound bed;
a perforated layer comprising a plurality of holes extending therethrough, the wound contact layer configured to be coupled to the perforated layer;
an intermediate layer configured to manifold fluid, the perforated layer configured to be coupled to the intermediate layer on a side opposite the wound contact layer; and
a drape configured to be disposed over the intermediate layer and seal over the wound bed;

an instillation pump fluidly communicable with the dressing and configured to provide instillation fluid to the dressing;
a negative pressure pump fluidly communicable with the dressing and configured to remove air from the dressing; and
a control circuit communicably coupled to the instillation pump and the negative pressure pump and configured to:
control the instillation pump and the negative pressure pump to perform at least one scrub cycle, the scrub cycle comprising:
controlling the instillation pump to provide a first amount of the instillation fluid to the dressing;
providing a first soak period; and
controlling the negative pressure pump to provide a cyclic variation of negative pressure at the dressing to generate cyclic deformation of the wound bed into the perforated layer at the plurality of holes between a first height relative to surrounding tissue and a second height relative to surrounding tissue; and

control the instillation pump and the negative pressure pump to perform at least one instillation cycle, the instillation cycle comprising:
controlling the negative pressure pump to provide a constant negative pressure;
controlling the instillation pump to provide a second amount of the instillation fluid; and
providing a second soak period.