Enhanced penetration system and method for sliding microneedles

A - Human Necessities – 61 – M

Patent

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Details

A61M 37/00 (2006.01) A61B 5/15 (2006.01)

Patent

CA 2546443

A microneedle device for transporting fluid through a surface of a biological barrier, the device including a fluid transport configuration, an abutment member and a displacement device. The fluid transport configuration includes a substrate having a substantially planar surface having a plurality of microneedles projecting therefrom. The abutment member has an abutment surface for abutting the biological barrier. The displacement device is configured for generating a relative lateral sliding movement between the surface of the biological barrier and the fluid transport configuration in a sliding direction of the microneedles. The microneedles are arranged so that a leading microneedle defines an effective area which is void of another microneedle. The effective area is defined as an area marked out by translating the base area of the leading microneedle, by the height of the leading microneedle, in a direction opposite to the sliding direction.

L'invention concerne un dispositif à micro-aiguilles qui permet de transporter un liquide à travers une surface d'une barrière biologique. Ce dispositif comprend une structure de transport de liquide, un élément de butée et un dispositif de déplacement. La structure de transport de liquide comprend un substrat qui présente une surface sensiblement planaire d'où font saillie une pluralité de micro-aiguilles. L'élément de butée présente une surface de butée permettant de venir buter contre la barrière biologique. Le dispositif de déplacement est conçu pour générer un mouvement de coulissement latéral relatif entre la surface de la barrière biologique et la structure de transport de liquide dans un sens de coulissement des micro-aiguilles. Ces micro-aiguilles sont conçues de façon qu'une micro-aiguille principale définisse une surface effective ne comprenant pas d'autre micro-aiguille. Cette surface effective est définie comme étant une surface marquée par le déplacement de la surface de base de la micro-aiguille principale, par la hauteur de la micro-aiguille principale, dans un sens opposé au sens de coulissement.

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