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US 11,166,726 B2Granted
Negative pressure wound closure device
AssigneeUniversity of Massachusetts
InventorRaymond Dunn
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.
Claims47
A system for negative pressure wound therapy, comprising:
- a collapsible wound closure device configured to be positioned within an abdominal wound of a patient wherein the collapsible wound closure device includes a compressible foam material having an oval-shaped outer wall surface such that the wound closure device preferentially collapses in an x-direction relative to a y-direction in a plane extending between wound margins of the abdominal wound, the y-direction extending along an axis of the abdominal wound;
- at least one sensor element that measures pressure within the abdominal wound;
- a sealing drape that seals the abdominal wound when the collapsible wound closure device is positioned in the abdominal wound;
- and
- a negative pressure source for providing negative pressure to the abdominal wound, wherein the negative pressure exerts a closure force on the collapsible wound closure device such that the collapsible wound closure device preferentially collapses in the x-direction relative to the y-direction to move the wound margins towards closure of the wound.
2 more elements
A system for negative pressure wound therapy, comprising:
- a porous foam wound filler material that is configured to have a size and shape for positioning relative to a wound wherein the porous foam wound filler material has a pore size, a pore density, and has an outer wall surface to preferentially contract along at least a first x-direction and inhibit contraction along a second y-direction upon application of a negative pressure to the wound to cause opposing wound margins of the wound to move along the first x-direction towards closure of the wound;
- a pad configured to be positioned beneath the porous foam wound filler material, the pad extending laterally such that a portion of the pad is positioned under tissue of the wound margins;
- at least one sensor element that measures a pressure of the wound;
- a sealing drape that seals the wound and the porous foam wound filler material positioned relative to the wound;
- and
- a negative pressure source for providing negative pressure to the wound, wherein the negative pressure exerts a closure force on the porous foam wound filler material such that the porous foam wound filler material preferentially contracts in the first x-direction to move wound margins of the wound over the pad towards closure.
3 more elements
A system for negative pressure wound therapy, comprising:
- a porous foam wound filler material having an oval-shaped outer wall surface for positioning relative to a wound wherein the porous foam wound filler material has a pore size, a pore density, and is structured to preferentially contract along at least a first x-direction and inhibit contraction along a second y-direction upon application of a negative pressure to the wound to cause opposing wound margins of the wound to move along the first x-direction towards closure of the wound;
- at least one sensor element that measures a pressure of the wound;
- a sealing drape that seals the wound and the porous foam wound filler material positioned relative to the wound;
- and
- a negative pressure source for providing negative pressure to the wound, wherein the negative pressure exerts a closure force on the porous foam wound filler material such that the outer wall surface of the porous foam wound filler material preferentially contracts in the first x-direction from an initial oval state to a collapsed oval state to thereby move wound margins of the wound towards closure.
2 more elements
Dependencies are inferred from the claim text.