Granted Patent B2

US 12,458,387 · App. 16/168,446 · Granted Nov 4, 2025

Inventors: Christopher Brian Locke (Bournemouth, GB); Peter Arnold (Northumberland, GB); Timothy Mark Robinson (Shillingstone, GB)

Assignee: Solventum Intellectual Properties Company

A61B17/32A61B17/3205A61F13/01017A61F13/05A61L31/06A61L31/146A61M1/915A61B2017/00761A61B2017/320004A61B2017/320008A61B2017/32006A61F2013/00174A61F2013/0028A61K45/06A61L2400/00A61M1/75A61M1/912A61M1/92A61M1/94

Abstract

Claims (26)

1 . An apparatus for debriding a tissue site, the apparatus comprising:

a tissue interface comprising:

an open-cell reticulated foam layer having a tissue-facing surface and an opposite surface;

a plurality of perforations extending through the open-cell reticulated foam layer from the tissue-facing surface to the opposite surface, the open-cell reticulated foam forming at least one wall surrounding each perforation, each perforation having a perforation shape factor adapted to collapse the perforation from a relaxed position to a contracted position in response to an application of negative pressure;

a transverse surface extending between the tissue-facing surface and the opposite surface of each perforation, the transverse surface forming a cutting edge with the tissue-facing surface, and

the cutting edge of each perforation being adapted to debride the tissue site in response to movement of the tissue interface between the relaxed position and the contracted position.

2 . The apparatus of claim 1 , wherein the perforations are adapted to collapse from the relaxed position to the contracted position generally perpendicular to a line of symmetry of the tissue interface.

3 . The apparatus of claim 1 , wherein the perforations have the perforation shape factor and a strut angle that are adapted to collapse the perforations from the relaxed position to the contracted position.

4 . The apparatus of claim 1 , wherein:

the perforations have the perforation shape factor and a strut angle that are adapted to collapse the perforations from the relaxed position to the contracted position; and

the perforations are adapted to collapse from the relaxed position to the contracted position generally perpendicular to a line of symmetry of the tissue interface.

5 . The apparatus of claim 4 , wherein the strut angle is about 90 degrees.

6 . The apparatus of claim 4 , wherein the strut angle is less than about 90 degrees.

7 . The apparatus of claim 1 , wherein the plurality of perforations have an average effective diameter of 5 mm.

8 . The apparatus of claim 1 , wherein the plurality of perforations are formed in two or more parallel rows.

9 . The apparatus of claim 1 , wherein the perforation shape factor is less than about 1.

10 . The apparatus of claim 1 , wherein a thickness of the tissue interface is about 15 mm.

11 . The apparatus of claim 1 , wherein a firmness factor of the tissue interface is about 5.

12 . The apparatus of claim 1 , wherein a firmness factor of the tissue interface is about 3.

13 . The apparatus of claim 1 , wherein a shape of each hole of the plurality of perforations is hexagonal, elliptical, circular, or triangular.

14 . The apparatus of claim 1 , wherein the tissue interface comprises a compressed foam, a felted foam, a 3D spacer fabric, a thermoplastic elastomer, or a thermoplastic polyurethane.

15 . The apparatus of claim 1 , wherein the tissue interface comprises a planar body.

16 . The apparatus of claim 1 , wherein:

the tissue interface comprises a thickness between the tissue-facing surface and the opposite surface; and

the plurality of perforations are disposed in the tissue interface and extend through the thickness of the tissue interface.

17 . The apparatus of claim 1 , further comprising a manifold coupled to the opposite surface of the tissue interface, the manifold and the tissue interface comprising an integral body.

Assignments (3)

Continuity (3)

References Cited (354)