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US 11,083,631 B2Granted
Negative pressure wound closure device
AssigneesUniversity of Massachusetts, Smith & Nephew, Inc.
InventorsRaymond M. Dunn, Victoria Jody Hammond, Edward Yerbury Hartwell, John Kenneth Hicks, Elizabeth Mary Huddleston, Andrew Kelly, Andrew Linton, Mark Richardson, Carl Saxby, Tim Stern
Life of this patent
Estimating the term…
Abstract
The present invention relates to a negative pressure wound closure system and methods for using such a system. Preferred embodiments of the invention facilitate closure of the wound by preferentially contracting to provide for movement of the tissue. Preferred embodiments can utilize tissue grasping elements to apply a wound closing force to the tissue.
Claims22
A wound closure apparatus, comprising:
- a stabilizing structure, comprising a plurality of cells provided side-by-side in a plane, each cell defined by a plurality of planar walls, each cell having a top end and a bottom end with an opening extending through the top end and the bottom end in a direction perpendicular to the plane;
- wherein the stabilizing structure is configured to collapse more within the plane than along the direction perpendicular to the plane;
- separate foam layers provided above, below, or on both upper and lower regions of the stabilizing structure, the foam layers comprising a plurality of fingers that extend into the cells of the stabilizing structure to a position between adjoining planar walls of cells wherein the adjoining walls rotate during collapse of the stabilizing structure;
- and
- wherein the fingers are conically shaped.
2 more elements
A wound closure apparatus, comprising:
- a stabilizing structure, comprising a plurality of cells provided side-by-side in a plane, each cell defined by a plurality of planar walls, each cell having a top end and a bottom end with an opening extending through the top end and the bottom end in a direction perpendicular to the plane wherein the stabilizing structure has a length direction and a width direction and an outer surface having an oval shape;
- wherein the stabilizing structure is configured to collapse more within the plane than along the direction perpendicular to the plane;
- separate foam layers provided above, below, or on both upper and lower regions of the stabilizing structure, the foam layers comprising a plurality of fingers that extend into the cells of the stabilizing structure to a position between adjoining planar walls of cells wherein the adjoining walls rotate in the plane during collapse of the stabilizing structure upon application of negative pressure;
- and
- wherein the fingers are conically shaped.
2 more elements
Dependencies are inferred from the claim text.