Patent ID: 11864981
Assignee: SMITH & NEPHEW PLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. A negative pressure wound therapy apparatus comprising:
a wound dressing having a length, a width, a central longitudinal axis extending along the length and a transverse axis extending along the width perpendicular to the central longitudinal axis, the wound dressing comprising:
a wound contact layer configured to be positioned over a wound and over a skin surrounding the wound;
a material layer above the wound contact layer, the material layer configured to be positioned over the wound and over the skin surrounding the wound, the material layer including a first portion positioned on one side of the transverse axis and a second portion positioned on an opposite side of the transverse axis, wherein the second portion comprises two lobes on opposite sides of the central longitudinal axis each extending away from the central longitudinal axis, and wherein outermost end surfaces of each of the two lobes have a convex curvature;
a backing layer above the material layer, the backing layer configured to be positioned over the wound and over the skin surrounding the wound; and
a port coupled to the backing layer for connecting the wound dressing to a source of negative pressure, wherein the port is positioned over the first portion of the material layer on the central longitudinal axis,

wherein the wound dressing is symmetrical about the central longitudinal axis, wherein the backing layer is configured to form a seal with the skin surrounding the wound, wherein the backing layer is in direct contact with the material layer in the region surrounding the port before negative pressure is applied, and wherein the port is attached to an upper surface of the backing layer.