System for contamination-free delivering flowable material

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 47/20 (2006.01) F16K 15/14 (2006.01)

Patent

CA 2361234

A system is provided for contamination free delivery and control of a flowable medium contained in an enclosed flow path or a container. The device enables a flowable material to be formulated without anti-oxidants, preservatives or anti microbial agents. This provides the advantage of an enhanced therapeutic effect for many medications, especially those which are considered labile. The system provides a seat (100) and reversibly deformable seal (110) disposed in the flow path; wherein the seal and seat are moveable between a closed and open state upon the deformation of the seal. In the closed state, the sealing surface (114) between the seal and seat entraps one or more layers of the flowable material which forms a bonding action between the seal and seat to prevent entry of external matter into the flow path while at the same time forming a barrier against the back flow migration of contaminating matter.

L'invention concerne un système d'apport et de régulation sans contamination d'un milieu fluide contenu dans un circuit d'écoulement fermé ou dans un contenant. Le dispositif permet de formuler une matière fluide sans antioxydants, agents conservateurs ou agents antimicrobiens. Il offre l'avantage d'assurer un effet thérapeutique accru pour de nombreux médicaments, spécialement ceux qui sont considérés comme labiles. Le système concerne un siège (100) et un joint déformable (110) de manière réversible placés dans le circuit d'écoulement ; le joint et le siège peuvent être déplacés entre un état fermé et un état ouvert après déformation du joint. A l'état fermé, la surface d'étanchéité (114) entre le joint et le siège inclut une ou plusieurs couches de la matière fluide, laquelle produit un effet d'adhérence entre le joint et le siège qui empêche la pénétration de matières extérieures dans le circuit d'écoulement et forme en même temps une barrière empêchant la rétromigration de matières contaminées.

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