Malleable paste with high molecular weight buffered carrier for filling bone defects
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United States of America Patent
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Aug 20, 2002
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N/A
app pub date -
Feb 29, 2000
filing date -
Feb 27, 1998
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Abstract
The invention is directed toward a malleable bone putty and a flowable gel composition for application to a bone defect site to promote new bone growth at the site which comprises a new bone growth inducing compound of demineralized lyophilized allograft bone powder. The bone powder has a particle size ranging from about 100 to about 850 microns and is mixed in a high molecular weight hydrogel carrier contain a sodium phosphate saline buffer, the hydrogel component of the carrier ranging from about 0.75 to 4.5% of the composition and having a molecular weight of about at least 160,000 Daltons. The composition has a pH between 6.8-7.4 contains about 25% to about 35% bone powder and can be additionally provided with BMP's.
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