Patent ID: 8628728
Filing Date: 2014-01-14
Classification: A61B,G01N

Abstract:
1. A non-invasive, colorimetric infection detector comprising: (a) a substrate; and (b) an indicator composition capable of sensing gaseous oxides of nitrogen and acids formed therefrom, said indicator composition disposed on, encapsulated within, or covalently linked with the substrate; wherein the indicator composition has a pKa in the range of from greater than 1 to about 6.5; wherein the indicator composition comprises one or more of phenolsulfonephthaleins, triphenylmethanes, azo dyes, nitrophenols, and styryl dyes; and wherein the detector, when disposed in proximity to a wound, detects gaseous oxides of nitrogen and acids formed therefrom emanating from the wound upon onset of infection therein, and exhibits a color change in response thereto.