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US 5,154,928 AGranted
Wound dressing
AssigneeUhra Laboratories Limited
InventorTrevor J. Andrews
Life of this patent
Estimating the term…
Abstract
The invention provides a wound dressing comprising a pad of soft polyurethane foam one surface layer of which is hydrophilic and a backing layer of which is hydrophobic and a sheet or strip of a soft conformable polyether foam having an adhesive on one surface thereof. The surface of said pad opposite the hydrophobic layer is secured to said sheet or strip by said adhesive and said sheet or strip overlaps said pad to enable the pad to be secured in position with said hydrophilic layer in contact with a wound by means of said adhesive.
Claims19
A wound dressing comprising:
- a pad of soft polyurethane foam one surface layer of which is hydrophilic and a backing layer of which is hydrophobic;
- a sheet or strip of a soft conformable polyetherurethane foam having an adhesive on one surface thereof;
- the surface of said pad opposite said hydrophilic layer being secured to said sheet or strip by said adhesive;
- and
- the one surface of said sheet or strip overlapping said pad to enable said pad to be secured in position with said hydrophilic layer in contact with a wound by means of said adhesive.
2 more elements
A wound dressing comprising:
- a pad of soft polyurethane foam one surface layer of which is hydrophilic and a backing layer of which is hydrophobic;
- a sheet or strip of a soft conformable polyetherurethane foam having an adhesive on one surface thereof;
- the polyetherurethane foam being a predominantly closed-cell blocked toluene diisocyanate polyetherurethane foam having a pore size of 0.1 to 0.6 mm and the sheet or strip having an elongation of 200% to 300%.
- the surface of said pad opposite said hydrophilic layer being secured to said sheet or strip by said adhesive;
- and
- the one surface of said sheet or strip overlapping said pad to enable said pad to be secured in position with said hydrophilic layer in contact with a wound by means of said adhesive.
3 more elements
Dependencies are inferred from the claim text.