Silver containing wound dressing
AssigneeConvatec Technologies Inc.
InventorDavid Malcolm WOODS
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Abstract
A wound dressing having anti-microbial activity comprises a first fibre capable of bonding with silver (1) cations. The wound dressing comprises a blend of the first fibre to which silver (1) cations are bonded and a second fibre which is substantially free from silver. The wound dressing comprises from 0.01 to 5.0 percent by weight of silver (1) cations, based on the weight of fibre.
Claims16
A wound dressing having anti-microbial activity, comprising a first fibre which is substantially insoluble in water having silver (I) cations bonded thereto and discoloring on exposure to light, wherein the wound dressing consists of a uniform blend of the first fibre and a second fibre of lyocell which is substantially free from silver, said wound dressing comprising from 0.01 to 5.0 percent by weight of silver (I) cations based on the total weight of first and second fibres, whereby the discoloration of the blend on exposure to light is lessened compared with the discoloration on exposure to light of a batch of the first fibre having the same average amount of silver cations present as is present in the blend.
A wound dressing according to claim 3, which comprises from 0.25 to 3.0 percent by weight of silver (I) cations based on the total weight of first and second fibres.
Dependencies are inferred from the claim text.