Method for preparing a calcium phosphate pasty material for injection
US6923989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Aug 2, 2005 |
| Priority date | — |
| Expiry date | Feb 27, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L27/46
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for preparing a calcium phosphate pasty material for injection which after, setting, is designed to form an apatite material consists in: producing from water and calcium phosphates pasty mixture capable of developing, hardening and forming a hydroxyapatite. The method is characterised in that it consists in adding to the calcic phosphates or to the pasty mixture before it is injected a methicone having relative to the mixture more than 0.30 wt. % and less than 10 wt. %. The resulting material can be injected, that is it can be transported in pasty form into a conduit under moderate pressure levels. The material sets on the site of implantation and hardens to form an apatite biomaterial in a manner similar to known methicone-free calcium phosphate mixtures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.