US 11,957,547 B2
Medical dressing
Patrick Rodzewicz, Gothenburg (SE); Jenny Flach, Alingsås (SE); Maria Gustin Bergström, Linköping (SE); Karin Östan, Nödinge (SE); Sandra Tillman, Gothenburg (SE); Angelica Andresen, Kungsbacka (SE); and Anita Haraldsson Hedbratt, Mölnlycke (SE)
Assigned to MÖLNLYCKE HEALTH CARE AB, Gothenburg (SE)
Appl. No. 16/312,216
Filed by Mölnlycke Health Care AB, Gothenburg (SE)
PCT Filed Jun. 14, 2017, PCT No. PCT/EP2017/064548
§ 371(c)(1), (2) Date Dec. 20, 2018,
PCT Pub. No. WO2017/220405, PCT Pub. Date Dec. 28, 2017.
Claims priority of application No. 16176008 (EP), filed on Jun. 23, 2016.
Prior Publication US 2019/0231603 A1, Aug. 1, 2019
Int. Cl. A61F 13/02 (2006.01); A61F 13/00 (2006.01); A61F 13/0203 (2024.01); A61F 13/15 (2006.01); A61F 17/00 (2006.01)
CPC A61F 13/022 (2013.01) [A61F 13/15203 (2013.01); A61F 17/00 (2013.01); A61F 2013/00272 (2013.01); A61F 2013/00404 (2013.01); A61F 2013/00829 (2013.01); A61F 2013/15024 (2013.01); A61F 2013/15284 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A medical dressing for application to a contoured surface of a human body, said dressing having a central portion and a surrounding border portion and a lateral (x) direction and a longitudinal (y) direction; wherein said dressing comprises:—a backing layer,—an adhesive body contact layer, and—a multi-layered pad comprising at least a first layer that has a higher affinity for liquid than a second layer, and a third layer comprising a polyurethane foam, wherein the multi-layered pad is arranged between said backing layer and said adhesive body contact layer to collectively define the central portion, wherein said backing layer and said adhesive body contact layer extend beyond a periphery of said pad to define said surrounding border portion along the periphery of the pad; wherein said adhesive body contact layer comprises a film covered by an adhesive layer, the adhesive body contact layer further comprising a plurality of perforations extending through the adhesive body contact layer for aiding absorption of liquid into said pad; wherein said second layer of said pad comprises a nonwoven material and said second layer is positioned between the first layer and the third layer; said pad being symmetric about a longitudinal center line and comprising a first lobed portion on one side of said longitudinal center line and a second lobed portion on the other side of said longitudinal center line; wherein said central portion has a tensile strength at 25% elongation in the longitudinal (y) direction that is at least 4 times higher than the tensile strength at 25% elongation in the lateral (x) direction, such that the central portion is stiffer in the longitudinal (y) direction and is more stretchable in the lateral (x) direction.