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US 11,786,409 B2Granted
Wound pads
AssigneeMölnlycke Health Care AB
InventorsKalle Jon Nordbo, Jerker Gröndahl, Esbjörn Olsson, Bengt Olof Sebastian Engwall
Life of this patent
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Abstract
Described are wound pads for use, e.g., as cavity wound fillers, having shapes with rounded corners, the projection on an X-Y plane of at least one corner having a curvature distinct from that of the projection of the other corners. Negative pressure systems and kits that includes such wound pads, and methods of using such wound pads are also described.
Claims16
An article consisting of a wound pad for application in a wound, the wound pad consisting of an open-cell foam, wherein the open-cell foam comprises
- a main extension parallel to an X-Y plane of a Cartesian coordinate system with axes X, Y and Z;
- and
- a thickness in the Z direction of said Cartesian coordinate system;
- wherein the wound pad has a first corner, a second corner, a third corner, a fourth corner, a first perimeter edge, a second perimeter edge, a third perimeter edge, and a fourth perimeter edge that together define a shape and perimeter edge of the wound pad,
- wherein said first perimeter edge connects the first corner and the second corner,
- wherein the second perimeter edge connects to the second corner and the third corner,
- wherein the third perimeter edge connects the third corner and the fourth corner.
- wherein the fourth perimeter edge connects the fourth corner and the first corner,
- each corner being at least one of
- a) provided as a rounded corner, a projection of which on said X-Y plane has a radius of curvature, or
- b) removable, by manually separating a corner piece of the wound pad delineated by a corner incomplete cut so as to leave a rounded corner, a projection of which on said X-Y plane has a radius of curvature,
- wherein the projection on said X-Y plane of at least one rounded corner of a) or b) has a radius of curvature which differs from the radius of curvature of the projection on said X-Y plane of any of the other corners,
- wherein the wound pad only has two corner incomplete cuts being a first corner incomplete cut and a second corner incomplete cut,
- wherein in the first corner incomplete cut extends from the first perimeter edge to the third perimeter edge,
- wherein the second corner incomplete cut extends from the third perimeter edge to the fourth perimeter edge,
- wherein the second corner and the third corner are removable, by manually separating a piece of the wound pad delineated by the first corner incomplete cut,
- wherein the fourth corner is removable, by manually separating a corner piece of the wound pad delineated by the second corner incomplete cut,
- wherein the first and second corner incomplete cuts each comprises a plurality of cut segments and one or more connection regions, the one or more connection regions being respective uncut open-cell foam regions that extend continuously between adjacent cut segments,
- wherein each cut segment of the plurality of cut segments extends longitudinally in the X-Y plane,
- wherein each cut segment of the plurality of cut segments is separated from a neighbouring cut segment of the plurality of cut segments by one connection region of the one or more connection regions.
17 more elements
Dependencies are inferred from the claim text.