Developable hyaluronic acid microspherical embolic agent, preparation method and use thereof
US10894110B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Jan 27, 2019 |
| Grant date | Jan 19, 2021 |
| Priority date | — |
| Expiry date | Jan 27, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2430/36
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A developable hyaluronic acid microspherical embolic agent includes a hyaluronic acid and an X-ray opaque contrast material; wherein the hyaluronic acid is a modified hyaluronic acid, wherein a modifying method for preparing the modified hyaluronic acid is cross-linking, grafting, esterification, or recombination, and is preferably cross-linking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.