System and method for producing drug-loaded microparticles

A - Human Necessities – 61 – K

Patent

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Details

A61K 38/17 (2006.01) A61J 3/00 (2006.01) A61K 9/16 (2006.01) A61K 47/36 (2006.01) B01J 2/00 (2006.01)

Patent

CA 2224074

Method and system of producing microparticles loaded with biologically active drugs, including proteins such as ICAM-1, for controlled release of the drugs in a nasal passageway. The method includes introducing a drug/polymer feed solution and an emulsifier into a first mixing chamber to create an emulsion, then mixing a cross-linking agent together with the emulsion under controlled conditions to create microparticles loaded with the drug. The system includes a first mixing chamber, in which the emulsion is created, having a first port for introducing the drug/polymer solution, and a second port angled substantially perpendicular to the first port for introducing the emulsifier. A second mixing chamber adjacent to the first mixing chamber receives the emulsion and either contains a cross-linking agent or receives a stream of a cross-linking agent to solidify the microparticles. The formed microparticles are filtered and deaggregated to form individual microparticles that then may be formulated for nasal passageway delivery.

Procédé et système de production de microparticules chargées de médicaments biologiquement actifs, comprenant des protéines telles que ICAM-1, ces microparticules étant destinées à libérer de manière lente les médicaments dans les voies nasales. Ce procédé consiste à introduire une solution de médicament/polymère et un émulsifiant dans une première chambre de mélange pour former une émulsion, à mélanger ensuite un agent de réticulation avec l'émulsion dans des conditions régulées afin d'obtenir des microparticules chargées du médicament. Le système comprend une première chambre de mélange, dans laquelle se forme l'émulsion, pourvue d'un premier orifice par lequel est introduite la solution médicament/polymère, et d'un second orifice, pratiquement perpendiculaire au premier, et par lequel est introduit l'émulsifiant. Une seconde chambre de mélange adjacente à la première réceptionne l'émulsion, cette chambre contenant un agent de réticulation ou recevant un courant d'un agent de réticulation pour solidifier les microparticules. Les microparticules obtenues sont filtrées et désagrégées sous forme de microparticules individuelles qui peuvent être ensuite formulées de façon à être administrées dans les voies nasales.

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