Wound dressing
View Patent ↗A wound dressing for post-operative sites comprising: a thin film layer covered on one side with an adhesive and an absorbent layer adhered to the adhesive side of the thin film layer, the absorbent layer being capable of absorbing exudate to allow the wound to be viewed through the dressing.
1. A wound dressing for post-operative sites comprising:
a thin film layer of 0.02 mm to 0.04 mm in thickness covered on one side with an adhesive and an absorbent layer adhered to the adhesive side of the thin film layer, the absorbent layer being the wound contacting surface of the dressing, being made by carboxymethylating a cellulosic fabric, becoming transparent upon absorption of exudate, and allowing the wound to be viewed through the dressing on post-operative sites.
2. A wound dressing as claimed in claim 1 wherein the absorbent layer forms a gel on absorption of exudate.
3. A wound dressing as claimed in claim 2 wherein the absorbent layer is a carboxymethylated cellulose fabric with a degree of substitution of cellulose groups measured by IR spectroscopy in the range of from 0.12 to 0.35.
4. A wound dressing as claimed in claim 2 wherein the absorbent has an absorbency of at least 10 g/g of sodium/calcium chloride solution.
5. A wound dressing as claimed in claim 2 wherein the thin film layer is a polyurethane film.
6. A wound dressing as claimed in claim 2 wherein an apertured adhesive layer overlies the absorbent layer.
7. A wound dressing as claimed in claim 1 wherein the absorbent layer has a surface structure which provides a key for the adhesive of the thin film layer.
8. A wound dressing as claimed in claim 1 wherein the absorbent layer is a hydroentangled, non-woven fabric.
9. A wound dressing as claimed in claim 1 wherein the absorbent layer is a carboxymethylated cellulose fabric with a degree of substitution of cellulose groups measured by IR spectroscopy in the range of from 0.12 to 0.35.
10. A wound dressing as claimed in claim 1 wherein the absorbent layer has an absorbency of at least 10 g/g of sodium/calcium chloride solution.
11. A wound dressing as claimed in claim 1 wherein the thin film layer is a polyurethane film.
12. A wound dressing as claimed in claim 1 wherein the film layer extends beyond the absorbent layer to secure the dressing to the skin.
13. A wound dressing as claimed in claim 1 wherein an apertured adhesive layer overlies the absorbent layer.
14. A wound dressing as claimed in claim 1 wherein the thin film layer is transparent.