Back to results
US 5,470,576 AGranted
Process for preparing the alginate-containing wound dressing
AssigneeThe Kendall Company
InventorHarish A. Patel
Life of this patent
Estimating the term…
Abstract
Disclosed is a wound dressing comprising an absorbent pad impregnated with an alginate for promoting wound healing and which upon contact with the wound will exhibit haemostatic properties, the absorbent pad being characterized as being soft and highly pliant.
Claims4
A process for preparing a wound dressing containing calcium alginate consisting of the steps of impregnating an absorbent fabric with an aqueous solution of sodium alginate;
- thereafter introducing the sodium alginate-impregnated fabric into an aqueous solution of calcium chloride to convert the sodium alginate to calcium alginate;
- washing the calcium alginate-containing fabric with deionized water;
- drying the calcium alginate-containing fabric;
- and thereafter mechanically softening the fabric to provide a soft, highly pliant wound dressing.
1 more element
A process for preparing an alginate-containing wound dressing comprising the steps of:
- coating a mixture of sodium and calcium alginate with ethyl alcohol to prevent the alginate from gelling immediately on contact with water;
- thereafter adding deionized or distilled water to the ethyl alcohol-coated alginate mixture to form an alginate solution;
- impregnating a woven or nonwoven fabric with the alginate solution;
- drying the fabric impregnated with the mixture of sodium and calcium alginate;
- and thereafter
- mechanically softening the fabric to provide a soft, pliant wound dressing.
3 more elements
Dependencies are inferred from the claim text.