| 摘要 |
A wound dressing comprising an elongate spiral roll of a polyurethane foam. Also provided is a method of preparing such dressings comprising the steps of: providing a foaming mixture comprising an isocyanate-capped prepolymer and a foaming agent; casting the foaming mixture into a sheet; and rolling up the sheet into a spiral roll before curing of the polyurethane is complete.
|
