Method for treating chronic wounds with an extracellular polymeric substance solvating system
First Claim
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1. An apparatus for treating a chronic wound, comprising:
- a) a debriding device comprising a reservoir containing an extracellular polymeric substance solvating system comprising an aqueous solution of a metal ion sequestering agent, surfactant and buffering agent wherein the solvating system has an osmolarity of about 1,000-4,000 milliosmoles of solute per liter, and wherein the reservoir is in fluid communication with an applicator for applying the solvating system to a wound at a sufficient flow rate or under sufficient pressure to debride at least some devitalized tissue from the wound; and
b) an aspirating device which removes at least some debrided necrotic or other devitalized tissue and excess solvating system from the wound.
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Abstract
Chronic wounds may be treated by debriding necrotic and other devitalized tissue from the wound, and applying to the wound an extracellular polymeric substance solvating system comprising a metal ion sequestering agent, surfactant and buffering agent. The solvating system disrupts biofilms which may be present in the wound and aids or enables the resumption of normal healing.
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Citations
22 Claims
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1. An apparatus for treating a chronic wound, comprising:
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a) a debriding device comprising a reservoir containing an extracellular polymeric substance solvating system comprising an aqueous solution of a metal ion sequestering agent, surfactant and buffering agent wherein the solvating system has an osmolarity of about 1,000-4,000 milliosmoles of solute per liter, and wherein the reservoir is in fluid communication with an applicator for applying the solvating system to a wound at a sufficient flow rate or under sufficient pressure to debride at least some devitalized tissue from the wound; and b) an aspirating device which removes at least some debrided necrotic or other devitalized tissue and excess solvating system from the wound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A patient care kit for treating a chronic wound, the kit comprising a tray;
- syringe;
vessel containing an extracellular polymeric substance solvating system comprising an aqueous solution of a metal ion sequestering agent, surfactant and buffering agent wherein the solvating system has an osmolarity of about 1,000-4,000 milliosmoles of solute per liter; and
printed instructions describing the proper use of the kit for treating chronic wounds.
- syringe;
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22. A product comprising an extracellular polymeric substance solvating system for use in treatment of chronic skin wounds, the solvating system comprising an aqueous solution of at least about 0.01 M of metal ion sequestering agent, at least about 0.002 M of surfactant, and buffering agent that maintains the solvating system at an appropriate pH for contacting chronic skin wounds, wherein the solvating system has an osmolarity of about 1,000-4,000 milliosmoles of solute per liter, a sufficiently low viscosity to enable delivery to the wound using spray application, and aids in chronic wound biofilm detachment, removal or disruption.
Specification