Multi-layered wound dressing
AssigneeBristol-Myers Squibb Company
InventorsElizabeth Jacques, Steven M. Bishop, Michael J. Lydon, Bryan Griffiths
Life of this patent
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Abstract
A multi layered wound dressing comprising: (a) an adsorbent layer having high absorbency but low lateral wicking rate, and (b) a transmission layer having a high moisture vapor transmission rate overlying the side of said absorbent layer furthest from the wound.
Claims23
A multi layered wound dressing which comprises:
- (a) an absorbent layer having a water absorbency of at least 10 g/g with a low lateral wicking rate
- (b) a transmission layer having a high moisture vapor transmission rate overlying the side of said absorbent layer furthest from the wound during use;
- and,
- (c) a spreading layer having high lateral wicking rate disposed between the absorbent and transmission layer.
A method of treating or preventing maceration of skin surrounding a wound, comprising:
- (a) providing multi layered a wound dressing comprising an absorbent layer and a transmission layer, wherein the wound dressing provides a “T” shaped profile to the passage of exudate through the wound dressing and wherein the absorbent layer exhibits a water absorbency of at least 10 g/g;
- and,
- (b) contacting a wound with the wound dressing.
A method of treating or preventing maceration of skin surrounding a wound, comprising:
- (a) providing a wound dressing comprising
- (i) an absorbent layer, wherein the absorbent layer exhibits a water absorbency of at least 10 g/g and a low lateral wicking rate;
- (ii) a transmission layer, wherein the transmission layer exhibits a high moisture vapor transmission rate;
- and
- (iii) a spreading layer, wherein the spreading layer exhibits a high lateral wicking and wherein the spreading layer is sandwiched between the absorbent layer and the transmission layer;
- and
- (b) contacting a wound with the wound dressing.
A multi layered wound dressing comprising:
- (a) an absorbent layer having a water absorbency of at least 10 g/g and a lateral wicking rate of less than 20 mm/60 s;
- (b) a transmission layer having a moisture vapor transmission rate of at least 1,000 g/m2/24 hrs overlying the side of said absorbent layer furthest from the wound during use;
- and,
- (c) a spreading layer having a lateral wicking rate of at least 30 mm/60 s disposed between the absorbent layer and the transmission layer.
A method of treating or preventing maceration of skin surrounding a wound, comprising:
- (a) providing a wound dressing comprising
- (i) an absorbent layer having a water absorbency of at least 10 g/g and a lateral wicking rate of less than 20 mm/60 s;
- (ii) a transmission layer having a moisture vapor transmission rate of at least 1,000 g/m2/24 hrs overlying the side. of said absorbent layer furthest from the wound during use;
- and,
- (iii) a spreading layer having a lateral wicking rate of at least 30 mm/60 s disposed between the absorbent layer and the transmission layer;
- and
- (b) contacting a wound with the wound dressing.
Dependencies are inferred from the claim text.