| CPC A61F 13/0206 (2013.01) [A61F 13/05 (2024.01)] | 20 Claims |
|
1. A bandage, comprising:
a) a bottom layer having a contacting section to be placed on top of a wound and an adhesive section to stick to skin surrounding the wound, wherein a wound dressing is attached to a bottom side of the contacting section and a plurality of apertures or an open section in the contacting section to allow a fluid out of the wound and into the bandage;
b) a top layer, comprising:
I. a central section immediately above the contacting section of the bottom layer defining an open cavity space;
II. a plurality of deformable hollow domes immediately above the adhesive section of the bottom layer, each deformable hollow dome defining an interior space, wherein the plurality of the deformable hollow domes are made of a resilient material that return to their original shapes if deformed, and
III. a plurality of one-way valves integrated into the bandage, comprising:
i. at least a central one-way valve connecting the open cavity space of the central section to the interior space of at least one of the plurality of deformable hollow domes;
ii. at least an intermediate one-way valve connecting the interior space of two adjacent deformable hollow domes, and
iii. at least an exiting one-way valve connecting the interior space of at least one of the deformable hollow domes to a surrounding atmosphere;
wherein the plurality of one-way valves are configured to provide a one-way fluid flow defining a flow direction from the open cavity space of the central section to the surrounding atmosphere through the plurality of deformable hollow domes and prevent a reverse fluid flow;
whereby, by manually deforming the domes and squeezing air out of each dome, and when each dome returns to its original shape, a vacuum is drawn over the wound, thereby providing a negative pressure wound therapy over the wound, and whereby when a pressure differential between the pressure inside of each dome and an atmospheric pressure is below a predetermined threshold, said dome returns to its fully expanded configuration, and when the pressure differential is above the predetermined threshold, said dome remains in deformed configuration.
|