Patent number: 9028871
Abstract: Particular aspects provide bioresorbable and biocompatible compositions for bioengineering, restoring or regenerating tissue or bone, comprising a three-dimensional porous or non-porous scaffold material comprising a calcium phosphate-based ceramic having at least one dopant therein selected from metal ion or ion dopants and metal oxide dopants, wherein the composition is sufficiently biocompatible to provide for a cell or tissue scaffold, and resorbable at a controlled resorption rate for controlled strength loss, depending on dopant composition, under body, body fluid or simulated body fluid conditions. Preferably, the at least one dopant is selected from the group consisting of Zn2+, Mg2+, Si2+, Na+, K+, Sr2+, Cu2+, Fe3+/Fe2+, Ag+, Ti4+, CO32?, F?, MgO, ZnO, NaF, KF, FeO/Fe2O3, SrO, CuO, SiO2, TiO2, Ag2O and CaCO3, present in an amount between 0 and about 10 w %, from about 0.5 to about 5 w %, or from about 1 to about 3 w %, and methods of using same.
Type:
Grant
Filed:
April 25, 2007
Date of Patent:
May 12, 2015
Assignee:
Washington State University
Inventors:
Susmita Bose, Amit Bandyopadhyay