Injectable in situ self-forming mineral-polymer hybrid composition and uses thereof
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United States of America Patent
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Jun 10, 2014
Grant Date -
Jan 28, 2010
app pub date -
Oct 8, 2009
filing date -
Dec 9, 1999
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Abstract
Self-forming hybrid compositions consisting in admixed liquid and solid components enable the formation of bio-materials. The present invention proposes a) a thermo-sensitive self-forming liquid component, being water-based and containing at least a polycationic polymer such as chitosan, and an organic mono-phosphate source, which is a solution at a pH ranging from 6.5 to 7.4; b) a solid component being mineral and composed of at least one of calcium, fluoride, strontium, carbonate and phosphate salts. Solid mineral salts preferentially have a recognized bioactive potential such as the calcium phosphate salts for bones. Both solid and liquid components are admixed to form an injectable liquid slurry or pre-gelled paste that turn in situ into a hybrid uniform gel-like bio-material.
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