Composition for injection of hyaluronic acid, containing hyaluronic acid derivative and DNA fraction, and use thereof
US10456347B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2016 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Nov 24, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2305/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention refers to the injectable hyaluronic acid composition which is crosslinked viscoelastic hyaluronic acid gel comprising DNA fractions. More particularly, it refers to the injectable hyaluronic acid composition comprising a hyaluronic acid composition crosslinked in the basic conditions with the degree of crosslinking between 0.1 and 200%, which is mixed with the DNA fractions of 0.1 to 50 wt %. The DNA fractions are selected, for example, from polynucleotide (PN) and polydeoxyribonucleotide (PDRN). The composition used for cosmetic purposes or therapeutic purposes, have improved viscoelastic rheological properties and enzyme resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.