US 12,465,525 B1
Wound covering with infection indicium
Eric M.V. Hoek, Los Angeles, CA (US); M. Yashar S. Kalani, Tulsa, OK (US); and Harvey L. Stein, Annapolis, MD (US)
Filed by Health IQ Monitoring LLC, Annnapolis, MD (US)
Filed on Aug. 7, 2023, as Appl. No. 18/230,808.
Claims priority of provisional application 63/398,316, filed on Aug. 16, 2022.
Int. Cl. A61F 13/00 (2024.01); A61F 13/0246 (2024.01)
CPC A61F 13/00059 (2013.01) [A61F 13/0253 (2013.01); A61F 2013/00889 (2013.01); A61F 2013/00948 (2013.01); A61F 2013/00953 (2013.01); A61F 2013/00965 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A wound covering comprising:
an inner layer designed for absorbing wound exudate and facilitating water evaporation;
an outer layer with a proximal surface having an adhesive for securing the wound covering over a wound, and a distal surface supporting an indicia mechanism;
a central layer incorporating an absorbent pad made of cotton or a water-absorbing hydrogel;
a contacting surface having a thin, porous-polymer coating on a proximal surface of the central layer to provide a non-stick surface preventing disruption of the wound when removed; and
an indicator surface incorporating a sensor indicator comprising a pH-responsive additive capable of monitoring a wound for infection by detecting temperature and pH at a skin surface, wherein the pH-responsive additive, polyaniline, is incorporated into a separate layer within the contacting surface, and its color change due to pH variation is visible through the indicator surface or a transparent region in the wound covering.