US 11,724,020 B2
Collapsible sheet for wound closure and method of use
Allan Kenneth Frazer Grugeon Hunt, East Riding (GB)
Assigned to Smith & Nephew PLC, Watford (GB)
Appl. No. 16/622,773
Filed by Smith & Nephew PLC, Watford (GB)
PCT Filed Jun. 11, 2018, PCT No. PCT/EP2018/065400
§ 371(c)(1), (2) Date Dec. 13, 2019,
PCT Pub. No. WO2018/229012, PCT Pub. Date Dec. 20, 2018.
Claims priority of provisional application 62/519,775, filed on Jun. 14, 2017.
Prior Publication US 2021/0146021 A1, May 20, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 1/00 (2006.01); A61B 46/20 (2016.01); A61F 13/00 (2006.01); A61F 13/02 (2006.01)
CPC A61M 1/90 (2021.05) [A61B 46/20 (2016.02); A61F 13/00068 (2013.01); A61F 13/0209 (2013.01); A61F 2013/00357 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wound closure device comprising a collapsible sheet configured to be placed over a wound, the collapsible sheet comprising:
a top layer and a bottom layer; and
a plurality of cells at least partially defined by the top layer and the bottom layer, the plurality of cells arranged side-by-side in a horizontal plane and adjoined to one another by a plurality of cell walls;
wherein:
each cell comprises a tessellating shape;
each cell comprises a hollow space enclosed by cell walls, a portion of the top layer, and a portion of the bottom layer, the hollow space configured to be filled with fluid; and
at least one of the plurality of cells has an interior space that is fluidically isolated from all other cells of the plurality of cells and is configured to selectively collapse in a vertical plane of the collapsible structure that is perpendicular to the horizontal plane and thereby cause at least a portion of the collapsible sheet to collapse.