Prepackaged liquid bone cement
US6409972B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jun 6, 1995 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Jun 6, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2101/2305
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Poly(alkyl methacrylate) bone cement ingredients are prepackaged as two separate components in two separate chambers of a container which can be connected to a static mixer, where both components are in a liquid form that is at least substantially air-free, and wherein the static mixer can mix the two liquid components without mechanical agitation and without the introduction of air into the two liquid components during the transfer of the two liquid components from their separate chambers through the static mixer. The first liquid component is formed by premixing a bone cement liquid monomer with bone cement polymer powder, a polymerization initiator, and a stabilizer to form a liquid mixture. The second liquid component is formed by premixing bone cement liquid monomer with bone cement polymer powder, if any, a stabilizer, and an activator to form a liquid mixture. The monomer/polymer ratio of each liquid component containing polymer will be in the range of the minimum required to provide the respective component as a liquid mixture up to the maximum which, when the two liquid components are mixed, will result in the desired monomer/polymer ratio for the mixture. Each end of each…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.