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US 8,821,916 B2Granted
Medical dressing comprising an antimicrobial silver compound
AssigneeColoplast A/S
InventorBrian Nielsen
Life of this patent
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Abstract
A medical dressing comprising a complex of silver and being capable of releasing antimicrobial silver ion activity, said complex comprising silver and a transition element of Group IV of the periodic system of elements enables a controlled release of silver ion activity to a wound bed.
Claims12
A dry medical dressing comprising:
- a) a silver sodium hydrogen zirconium phosphate complex;
- b) at least one non-ionic absorbing element comprising a hydrocolloid, wherein said absorbing element is a separate element in said dressing;
- c) wherein said silver sodium hydrogen zirconium phosphate complex is mixed within said hydrocolloid absorbing element such that the concentration of silver ion is between about 0.01 to 30 mg silver/cm2;
- d) wherein said hydrocolloid absorbing element releases the silver ion from said silver sodium hydrogen zirconium phosphate complex only when said hydrocolloid absorbing element is placed in contact with wound exudate or fluid containing monovalent cations;
- and
- e) wherein said silver ion is released in an effective amount to exhibit antiseptic activity in a wound when placed in contact with a wound secreting exudate or fluid containing monovalent cations.
3 more elements
A dry medical dressing comprising:
- a) a silver sodium hydrogen zirconium phosphate complex;
- b) at least one non-ionic absorbing element comprising a hydrocolloid, wherein said absorbing element is homogenously distributed in said dressing;
- c) wherein said silver sodium hydrogen zirconium phosphate is mixed within said hydrocolloid absorbing element such that the concentration of silver ion is between about 0.01 to 30 mg silver/cm2;
- d) wherein said silver sodium hydrogen zirconium phosphate complex releases said silver ion from said silver sodium hydrogen zirconium phosphate complex only when said hydrocolloid absorbing element is placed in contact with wound exudate or fluid containing monovalent cations;
- and
- e) wherein said silver ion is released in an effective amount to exhibit antiseptic activity in a wound when placed in contact with a wound secreting exudate or fluid containing monovalent cations.
3 more elements
Dependencies are inferred from the claim text.