Granted Patent B2

US 12,408,939 · App. 16/923,651 · Granted Sep 9, 2025

Inventors: Shannon C. Ingram (Bulverde, TX); Christopher Brian Locke (Bournemouth, GB); Peter Arnold (Northumberland, GB); Timothy Mark Robinson (Shillingstone, GB); Christopher Allen Carroll (San Antonio, TX); Michael E. Manwaring (San Antonio, TX)

Assignee: Solventum Intellectual Properties Company

A61B17/32A61B17/22004A61F13/05A61M1/915A61M1/92A61M27/00A61B2017/22008A61B2017/22089A61B2017/320008A61B2017/32006A61B2017/320064A61M1/96

Abstract

Claims (25)

1. A system for debriding a tissue site, comprising:

a cover adapted to form a sealed space over the tissue site for receiving a negative pressure from a negative-pressure source; and

a tissue interface having a manifold and a debridement tool, the manifold and the debridement tool being integral components of the tissue interface;

the manifold adapted to deliver negative pressure to the tissue site;

the debridement tool adapted to be positioned between the manifold and the tissue site, the debridement tool comprising a felted foam;

a plurality of holes extending through the debridement tool, the plurality of holes being separated from each other by walls, the walls having transverse surfaces extending perpendicular to a surface of the debridement tool that form cutting edges with the surface of the debridement tool, and wherein the plurality of holes have a perforation shape factor that allows the plurality of holes to collapse from a relaxed position to a contracted position in response to an application of negative pressure to the sealed space and to return from the contracted position to the relaxed position in response to a removal of negative pressure from the sealed space; and

the plurality of holes being adapted to generate macro-pressure points in the tissue site in the contracted position and the cutting edges being adapted to disrupt the macro-pressure points in the tissue site in response to movement of the debridement tool between the relaxed position and the contracted position.

2. The system of claim 1 , wherein the plurality of holes are adapted to collapse from the relaxed position to the contracted position generally perpendicular to a line of symmetry of the debridement tool.

3. The system of claim 1 , wherein the plurality of holes have the perforation shape factor and a strut angle adapted to collapse the plurality of holes from the relaxed position to the contracted position.

4. The system of claim 3 , wherein the strut angle is about 90 degrees.

5. The system of claim 3 , wherein the strut angle is less than about 90 degrees.

6. The system of claim 1 , wherein:

the plurality of holes are adapted to have the perforation shape factor and a strut angle that allows the plurality of holes to collapse from the relaxed position to the contracted position; and

the plurality of holes are adapted to collapse from the relaxed position to the contracted position generally perpendicular to a line of symmetry of the debridement tool.

7. The system of claim 1 , further comprising a fluid source adapted to be fluidly coupled to the sealed space to provide fluid to the sealed space.

8. The system of claim 1 , wherein the plurality of holes have an average effective diameter of about 5 mm.

9. The system of claim 1 , wherein the plurality of holes are formed in two or more parallel rows.

10. The system of claim 1 , wherein the perforation shape factor of each hole of the plurality of holes is less than about 1.

11. The system of claim 1 , wherein a thickness of the debridement tool is about 15 mm.

12. The system of claim 1 , wherein a firmness factor of the debridement tool is about 5.

13. The system of claim 1 , wherein a firmness factor of the debridement tool is about 3.

14. The system of claim 1 , wherein a shape of each hole of the plurality of holes is hexagonal.

15. The system of claim 1 , wherein a shape of each hole of the plurality of holes is elliptical.

16. The system of claim 1 , wherein a shape of each hole of the plurality of holes is circular.

17. The system of claim 1 , wherein a shape of each hole of the plurality of holes is triangular.

Assignments (2)

Continuity (6)

References Cited (361)