Method of preparing porous calcium phosphate granules

C - Chemistry – Metallurgy – 04 – B

Patent

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Details

C04B 38/04 (2006.01) A61K 9/00 (2006.01) A61L 24/00 (2006.01) A61L 24/02 (2006.01) A61L 27/12 (2006.01) A61L 27/56 (2006.01) A61K 9/16 (2006.01)

Patent

CA 2483859

The invention describes a method of preparing macroporous calcium phosphate granules with NaCl porogen technique, wherein a calcium phosphate self-setting cement powder is mixed with 30 to 80 wt % NaCl. The calcium phosphate granules comprise macro- and micropores communicating with one another substantially throughout the body with a porosity of 40 % or more and having the same mineral as those of human bones. Said granules are used as a substitute or repairing material for bone, carrier material for drug delivery and gradual release system.

L'invention concerne une méthode de préparation de granules de phosphate de calcium macroporeuses, au moyen d'une technique porogène faisant appel à NaCl, dans laquelle une poudre de ciment auto-durcissable de phosphate de calcium est mélangée à 30 à 80 % en poids de NaCl. Les granules de phosphate de calcium comprennent des macropores et des micropores communiquant entre eux sensiblement à travers le corps présentant une porosité supérieure ou égale à 40 %, et présentant les mêmes minéraux que ceux des os humains. Lesdites granules sont utilisées en tant que matière de substitution ou de réparation pour les os, en tant que matière de support pour une administration du médicament et en tant que système à libération progressive.

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