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US 5,352,508 AGranted
Net wound dressings
AssigneeJohnson & Johnson Medical, Inc.
InventorCatherine L. Cheong
Life of this patent
Estimating the term…
Abstract
A net dressing in which the net substrate is encapsulated in a hydrophilic, tacky resin, the coating on the net substrate leaving the majority of the apertures in the net substrate unoccluded and a process for preparing the dressing.
Claims11
A pliant and comformable net dressing that adheres well to dry skin but does not adhere to wet skin and that comprises a net substrate, which has apertures whose smallest dimension is about 1.0 to 3.0 mm and which is encapsulated in a hydrophilic tacky resin, comprising either
- a polymerised hydrogel or
- a high molecular weight crosslinked polyurethane matrix containing at least one polyhydroxy compound having a number average molecular weight from 1,000 to 12,000 and a number average hydroxyl value from 26 to 110, the polyhydroxy compound comprising from 40 to 85% by weight based on the total weight of the matrix and the polyhydroxy compound, the resin being essentially free of polyhydroxy compounds having a molecular weight below 800, and
- the resin on the net substrate leaving the majority of the apertures in the net substrate unoccluded.
Dependencies are inferred from the claim text.