Astrazeneca Ab

H&aring;kan Glad

Catherine Boissier

The present invention relates to a filter device, especially for a fluidized bed system and particularly for use in the pharmaceutical industry, for separating particles larger than a separating grain from an amount of particles in a fluid flow. The filter device includes a housing and at least one filter portion. A part of the housing is mounted for rotational movement, and the filter portion is provided in the housing, whereby the filter portion is movable upon rotation of the housing. The present invention also relates to a method for separating particles using such a filter device.

Filter device

The present invention relates to a method for forming particles of a substance, comprising the step of introducing into a mixing chamber ( ), in which the temperature and pressure are controlled, a fluid gas ( ) and at least one vehicle system ( ) comprising at least one substance in solution or suspension such that droplet formation and extraction of the vehicle occur substantially simultaneously by the action of the fluid gas ( ). Turbulence is induced in at least one of said fluid gas ( ) and said vehicle system ( ) so as to create a controlled disorder in the flow of the at least one of the fluid gas ( ) or the vehicle system ( ) in order to control the particle formation in said mixing chamber ( ), said controlled disorder being created by at least one flow perturbation means ( ). The invention also relates to a mixing chamber having at least one flow perturbation means ( ) that is disposed for interacting with at least one of a fluid gas ( ) or vehicle system ( ) supplied by the at least one supply member ( ) so as to induce turbulence or limited disorder in the at least one of the fluid gas ( ) or vehicle system ( ).

Growing community of inventors

Åsa, Sweden

Håkan Glad

Growing community of inventors

Åsa, Sweden

H&aring;kan Glad

Håkan Glad