Diphasic injection composition containing dispersed and continuous phases useful for reparative and plastic surgery
US6685963B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 2, 2001 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Jan 2, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2210/0009
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Biocompatible diphasic compositions are prepared comprising a dispersed phase suspended in a continuous phase, more particularly suitable for use as a filling material in reparative and plastic surgery. The dispersed phase consists of particles of at least one hydrogel of a (co)polymer obtained by polymerizing and cross-linking acrylic acid, methacrylic acid and/or at least one derivative of said acids. The continuous phase is an aqueous solution or hydrogel of a polymer selected from proteins, polysaccharides and their derivatives which have been cross-linked. The polysaccharide may be hyaluronic acid, its salts and a mixture of its salts, advantageously consisting of a sodium hyaluronate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.