Patent · US Expired

Resorptive bone ceramic on the basis of tricalcium phosphate

US5141511A · kind A · utility

5Cited by

5References

15Claims

0Family size

Assignee

MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG · DE

Inventor

Gerd Bauer · Kleinostheim, DE

Key dates

Filing date	Feb 7, 1990
Grant date	Aug 25, 1992
Priority date	—
Expiry date	Feb 7, 2010

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61L2430/02
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

The invention relates to a process for the preparation of a resorptive bone ceramic on the basis of tricalcium phosphate which can be used as a bone replacement material. In the process, natural bone material, freed from the soft tissues, is used as the starting material. The remaining organic substances are removed from this starting material by pyrolysis. The remaining bone material, which consists virtually completely of hydroxyapatite, is subsequently treated with a phosphate carrier and then subjected to a sintering step.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.