IP Library › Granted Patent US 12,220,492
Granted Patent B1
US 12,220,492 · App. 18/244,012 · Granted Feb 11, 2025

Wound dressing based on polymeric mixture of cellulose acetate and hyaluronic acid embedded with copper oxide and magnesium oxide nanoparticles

Inventors: Mohamed Gouda (Al-Ahsa, SA); Hany Mohamed Abd El-Lateef Ahmed (Al-Ahsa, SA)
Assignee: KING FAISAL UNIVERSITY
A61L15/28A61L15/18A61L2400/12
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Quick Facts
Patent No.
US 12,220,492
App. No.
18/244,012
Granted
Feb 11, 2025
Kind
B1
Abstract

Wound dressings fabricated from a polymeric mixture of cellulose acetate and hyaluronic acid embedded with copper oxide and/or magnesium oxide nanoparticles and a method of making the wound dressing. The method includes 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 to form a final mixture, and drying the final mixture to form a film used for the wound dressing. Different weights of copper oxide and magnesium oxide can be chosen to achieve a certain morphological appearance. The wound dressing is a promising option for wound healing.

Claims (5)

1. A wound dressing consisting of:

a polymeric mixture of cellulose acetate and hyaluronic acid; and

nanoparticles embedded in the polymeric mixture, wherein the nanoparticles are binary copper oxide and magnesium oxide nanoparticles.

2. The wound dressing of claim 1 , wherein the nanoparticles are evenly distributed throughout the polymeric mixture.

3. The wound dressing of claim 1 , wherein the combination of the copper oxide nanoparticles and the magnesium oxide nanoparticles prevents degradation of the wound dressing.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 21, 2024
From: GOUDA, MOHAMED; AHMED, HANY MOHAMED ABD EL-LATEEF
To: KING FAISAL UNIVERSITY
Reel/Frame 069353/0431 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 11, 2023
From: GOUDA, MOHAMED; AHMED, HANY MOHAMED ABD EL-LATEEF
To: KING FAISAL UNIVERSITY
Reel/Frame 064863/0281 →
References Cited (9)
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Borkow, Gadi, Neta Okon-Levy, and Jeffrey Gabbay. “Copper oxide impregnated wound dressing: biocidal and safety studies.” Wounds 22.12 (2010): 301-310. [cited by applicant]
Taher, Fatemah A., et al. “Magnesium Ortho-Vanadate/Magnesium Oxide/Graphene Oxide Embedded through Cellulose Acetate-Based Films for Wound Healing Applications.” Materials 16.8 (2023): 3009.** [cited by applicant]
Wang, Fei, et al. “Improved antimicrobial ability of dressings containing berberine loaded cellulose acetate/hyaluronic acid electrospun fibers for cutaneous wound healing.” Journal of Biomedical Nanotechnology 18.1 (20… [cited by applicant]