A system and method for uniaxial compression of an article,...

B - Operations – Transporting – 29 – C

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B29C 67/00 (2006.01) A61J 3/10 (2006.01) A61K 9/20 (2006.01)

Patent

CA 2464478

A uniaxially compressed dosage form manufactured by three-dimensional printing that preserves the predetermined internal architecture of the dosage form while producing an improved surface finish. The compression compacts the dosage form, eliminating at least some of the void space that remains at the end of conventional three-dimensional printing. Surface finish obtained as a result of the uniaxial compression process can be essentially equal to that obtained from conventional tablet pressing. Additionally, the internal structure or spatial variation of composition of the dosage form is preserved during the pressing operation, with geometric shrinkage occurring mostly in the direction of the axis of pressing. Further, as a result of compression, a greater quantity of API can be packed into a given final volume of dosage form.

L'invention concerne une forme posologique à compression uniaxiale fabriquée par impression tridimensionnelle et caractérisée en ce qu'elle conserve une architecture interne prédéterminée tout en présentant un fini de surface amélioré. La compression permet de compacter cette forme posologique et de supprimer une partie au moins de l'espace vide subsistant à l'extrémité des impressions tridimensionnelles classiques. Le fini de surface obtenu sous l'effet de la compression uniaxiale peut être sensiblement égal à celui obtenu avec un pressage de comprimé classique. En outre, la structure interne ou la variation spatiale de composition de cette forme posologique peut être conservée pendant l'opération de pressage, le retrait géométrique se produisant essentiellement dans le sens de l'axe du pressage. Par ailleurs, sous l'effet de la compression, une quantité supérieure d'ingrédients pharmaceutiques actifs (IPA) peut être conditionnée dans un volume final donné de la forme posologique.

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