Bioerodible polymeric semi-interpenetrating network alloys and internal fixation devices made therefrom
US6153664A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Oct 7, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/903
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A bioerodible cement system, which, upon mixing of the system parts, forms a cured bioerodible cement, said system comprising a first part comprising a first bioerodible polymer capable of producing acidic products upon hydrolytic degradation; and a second part comprising a second bioerodible scaffolding polymer which upon crosslinking provides a biopolymeric scaffolding or internal reinforcement for said cured cement is disclosed. In a preferred embodiment, the second bioerodible polymer comprises polypropylene fumarate (PPF), which is cross-linked during curing, desirably by a vinyl monomer such as vinyl pyrrolidone (VP) to form the biopolymeric scaffolding which provides the cured cement with dimensional and geometric stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.