US 12,246,099 B1
Wound dressing based on polymeric mixture of cellulose acetate and hyaluronic acid embedded with copper oxide and magnesium oxide nanoparticles
Mohamed Gouda, Al-Ahsa (SA); and Hany Mohamed Abd El-Lateef Ahmed, Al-Ahsa (SA)
Assigned to KING FAISAL UNVERSITY, Al-Ahsa (SA)
Filed by King Faisal University, Al-Ahsa (SA)
Filed on Dec. 7, 2023, as Appl. No. 18/533,052.
Application 18/533,052 is a division of application No. 18/244,012, filed on Sep. 8, 2023.
Int. Cl. A61L 15/18 (2006.01); A61L 15/28 (2006.01)
CPC A61L 15/28 (2013.01) [A61L 15/18 (2013.01); A61L 2400/12 (2013.01)] 4 Claims
 
1. A method for making a wound dressing, the method comprising:
combining hyaluronic acid and deionized water to form a first mixture;
combining cellulose acetate and acetone to form a second mixture;
combining the first and second mixtures to form a third mixture of hyaluronic acid, cellulose acetate, deionized water, and acetone;
separately adding at least one of a copper acetate solution and a magnesium chloride solution to the third mixture to form a fourth mixture;
adding sodium hydride to the fourth mixture under an ultrasonic bath to form a final mixture; and
drying the final mixture to form a film used as the wound dressing;
wherein the ratio of hyaluronic acid to deionized water in the first mixture is about 1:10 (g/mL);
wherein the ratio of cellulose acetate to acetone in the second mixture is about 1:10 (g/mL).