Process for producing porous composite materials
US7163965B2 · kind B2 · utility
6Cited by
1References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 1, 2002 |
| Grant date | Jan 16, 2007 |
| Priority date | — |
| Expiry date | May 1, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L27/46
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention relates to a process for producing porous and composite materials comprising steps of: freezing a complex containing at least one calcium salt selected from calcium carbonate, calcium phosphate, and hydroxyapatite and collagen, at least a part of which is gelatinized; and then lyophilizing the resultant. The porous and composite materials obtained by the method of the present invention have large pore diameters, high porosities, and adequate mechanical strengths and biodegradability. Thus, they are suitable for implants such as bone fillers, drug carriers for sustained-release, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.