Patent ID: 7326464

Claim:
Microgranules obtained by the following steps: a) preparing a suspension loaded with a calcium phosphate powder, and containing optionally at least one other sparingly calcium salt, b) optionally adding at least one inorganic or organic additive, c) optionally adding at least one gelling agent, d) converting the suspension into droplets by applying a perturbation, wherein a constant perturbation frequency is maintained and is in the range of between 50 and 20,000 Hz, and wherein an expulsion of the suspension through a granulation nozzle occurs in the form of a laminar jet that is fragmented into uniform droplets under the action of physical perturbation in the nature of mechanical, electromechanical, pneumatic or piezoelectric vibration or electroacoustical irradiation, e) consolidating the droplets, and wherein each microgranule thus formed has roughly the shape of a revolution ellipsoid with a major axis a and a minor axis b, and having a microgranules granulometric distribution being such that its standard deviation relative to the average length of either of axes a or b is less than 5%.