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US 7,329,417 B2Granted
Medical dressing comprising an antimicrobial silver compound
AssigneeColoplast A/S
InventorBrian Nielsen
Life of this patent
Estimating the term…
Abstract
A medical dressing comprising a complex of silver and being capable of releasing antimicrobial silver ion activity, the complex comprising silver ion, a transition element of Group IV of the periodic system of elements, cation, phosphate and hydrogen to enable a controlled release of silver ion activity to a wound bed.
Claims25
A medical dressing comprising:
- a) an antimicrobial complex consisting essentially of:
- 1) silver ion;
- 2) a transitional element of Group IV of the Periodic System of Elements selected from the group consisting of zirconium, titanium and hafnium;
- 3) at least one cation selected from the group consisting of lithium, sodium and potassium;
- 4) phosphate;
- and
- 5) hydrogen;
- b) at least one absorbing element selected from the group consisting of an absorbing foam;
- said absorbing element being a separate element in said dressing;
- c) said antimicrobial complex being mixed within said absorbing element such that the concentration of silver ion is between about 0.01 to 30 mg silver/cm2 wound dressing;
- d) wherein the silver ion in said antimicrobial complex mixed within said absorbing element, is only capable of being released from said absorbing element when placed in contact with wound exudate or fluid containing monovalent cations;
- and
- e) and wherein the 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.
10 more elements
A medical dressing comprising:
- a) an antimicrobial complex consisting essentially of:
- 1) silver ion;
- 2) a transitional element of Group IV of the Periodic System of Elements selected from the group consisting of zirconium, titanium and hafnium;
- 3) at least one cation selected from the group consisting of lithium, sodium and potassium;
- and
- 4) phosphate;
- and
- 5) hydrogen;
- b) at least one absorbing element consisting of alginates, and said absorbing element being homogeneously distributed in the dressing;
- c) said antimicrobial complex being mixed within said absorbing element such that the concentration of silver ion is between about 0.01 to 30 rag silver/cm2 wound dressing;
- d) wherein the silver ion in said antimicrobial complex mixed within said absorbing element is only capable of being released from said absorbing element when placed in contact with wound exudate or fluid containing monovalent cations;
- and
- e) wherein the 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.
10 more elements
A medical dressing comprising:
- a) an antimicrobial complex consisting essentially of:
- 1) silver ion;
- 2) a transitional element of Group IV of the Periodic System of Elements selected from the group consisting of zirconium, titanium and hafnium;
- 3) at least one cation selected from the group consisting of lithium, sodium and potassium;
- 4) phosphate;
- and
- 5) hydrogen;
- b) at least one absorbing element consisting of alginates, said absorbing element being a separate element in said dressing;
- c) said antimicrobial complex being mixed within said absorbing element such that the concentration of silver ion is between about 0.01 to 30 mg silver/cm2 wound dressing;
- d) wherein the silver ion in said antimicrobial complex mixed within said absorbing element is only capable of being released from said absorbing element when placed in contact with wound exudate or fluid containing monovalent cations;
- and
- e) wherein the 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.
9 more elements
Dependencies are inferred from the claim text.