Granted Patent B2

US 12,594,190 · App. 18/018,256 · Granted Apr 7, 2026

Inventors: Bryan A. Baker (Minneapolis, MN); Caleb T. Nelson (Woodbury, MN); Steven P. Swanson (Blaine, MN)

Assignee: Solventum Intellectual Properties Company

A61F13/01034

Abstract

Claims (12)

1 . A method of making an article, comprising

providing a nonwoven;

reducing pH value of the nonwoven by a first plasma treatment comprising introducing at atmospheric pressure an input gas comprising oxygen, nitrogen, and water vapor; and

treating the nonwoven with a second plasma treatment after the first plasma treatment, wherein the second plasma treatment comprises introducing an oxygen plasma at sub atmospheric pressure;

wherein the article is a wound dressing comprising the nonwoven.

2 . The method of claim 1 , further comprising incorporating a carrier into the article.

3 . The method of claim 2 , wherein the nonwoven is disposed on or within the carrier.

4 . The method of claim 1 , wherein the nonwoven has a pH value from 2 to 5.

5 . The method of claim 1 , wherein the nonwoven has a pH value from 2 to 4.

6 . The method of claim 1 , wherein the nonwoven comprises lyocell or rayon.

7 . The method of claim 1 , further comprising incorporating a substrate into the article.

8 . The method of claim 1 , wherein the nonwoven is a sheet, fibers, mat, or scaffold.

Assignments (2)

Continuity (2)

References Cited (18)