Water resistant enhanced wound healing film and preparation method thereof
US10918675B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2018 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Jan 6, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12Y302/01017
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A water resistant enhanced wound healing film includes components by mass volume concentration of: 5-10 mg/L of ultra-fine eggshell powder, 50-500 mg/L of ultramicroshell membrane powder or shell membrane soluble protein, 5-30 mg/L of lysozyme, 5-10 mg/L of chitosan, 0.05-5 mg/L of glycerin, and 0.1-5 mg/L of polymer polysaccharide. Also, a preparation method of the water resistant enhanced wound healing film is disclosed. The whole raw materials of the present invention are non-toxic and have good biocompatibility; the raw materials include eggshell, shell membrane and soluble mixed protein thereof, and lysozyme in residual egg white. In the present invention, various components of the eggshell waste are sufficiently used. The wound healing film has good water resistance, mechanical properties, antibacterial activity and protein absorption capacity, and low degradation rate. The method of the present invention has simple process, strong practicability, extremely low production cost, favorable resource recycling and low energy consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.