Patent ID: 11857746
Assignee: SMITH & NEPHEW PLC
Field: Medical technology (Instruments)
Classification: CPC A  Y | IPC A

Claim 4:
5. A method of treating a wound, comprising:
positioning a wound dressing over a wound, the wound dressing comprising:
a backing layer;
a wound contact layer configured to contact the wound; and
an absorbent material positioned between the wound contact layer and the backing layer;

applying negative pressure to the wound through the wound dressing, wherein the negative pressure is applied by a negative pressure source integral with the wound dressing, wherein the negative pressure source comprises:
a manually compressible chamber; and
a one-way valve;
wherein applying negative pressure to the wound through the wound dressing comprises applying a compressive force to the manually compressible chamber to move fluid through the one-way valve and releasing the compressive force on the manually compressible chamber creates a negative pressure at the wound.