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

Claim 13:
14. A method of treating a wound, comprising:
providing an instillation pump in fluid communication with a dressing, the 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;

providing a negative pressure pump in fluid communication with the dressing;
providing at least one scrub cycle, the at least one scrub cycle comprising:
supplying, by the instillation pump, a first amount of the instillation fluid to the dressing;
waiting for a first soak period; and
operating the negative pressure pump to create a cyclic variation of negative pressure at the dressing and generating 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

providing at least one instillation cycle, the at least one 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.