Color change surgical prep solution

A - Human Necessities – 01 – N

Patent

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Details

A01N 25/00 (2006.01) A01N 31/02 (2006.01) A01N 31/08 (2006.01) A01N 31/12 (2006.01) A01N 31/16 (2006.01) A01N 47/44 (2006.01) A01N 59/12 (2006.01) A01P 1/00 (2006.01)

Patent

CA 2665313

This invention discloses a surgical prep solution formulation, either film forming or non-film forming, that changes color upon a change in pH to indicate that the solvent has sufficiently evaporated. The major components of this surgical prep solution include: antimicrobial agents, solvents, pH adjusters, color changing pH indicators, and optionally: film forming polymers, dyes and viscosity regulators. The pH of the solution may rise or fall depending on the pH of the original solution as compared with the normal pH range of the acid mantle of the human skin or the normal pH range of a sterilizing solution. As the pH changes, the pH indicator may cause the surgical prep solution to change color. Concurrently, as the fluids evaporate, the pH indicators interact with atmospheric CO2, causing the solution to change color based on the pH of the solution. The solution may also be used as coating for medical devices.

L'invention décrit une formulation de solution de préparation chirurgicale, filmogène ou non filmogène, qui change de couleur lors du changement du pH pour indiquer que le solvant a été suffisamment évaporé. Les composants principaux de cette solution de préparation chirurgicale comprennent : des agents antimicrobiens, des solvants, des ajusteurs de pH, des indicateurs de pH changeant de couleur, et facultativement : des polymères filmogènes, des colorants et des régulateurs de viscosité. Le pH de la solution peut monter ou chuter selon le pH de la solution d'origine par comparaison à la plage de pH normal du manteau acide de la peau humaine ou de la plage de pH normal d'une solution de stérilisation. Lorsque le pH change, l'indicateur de pH peut amener la solution de préparation chirurgicale à changer de couleur. En même temps, lorsque les fluides s'évaporent, les indicateurs de pH interagissent avec le CO2 atmosphérique, en amenant la solution à changer de couleur sur la base du pH de la solution. La solution peut également être utilisée comme revêtement pour des dispositifs médicaux.

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