Device for the dosed discharge of a liquid agent and...

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/145 (2006.01)

Patent

CA 2496587

The invention relates to a device for the dosed expelling of a liquid agent, especially for an infusion pump, comprising a receptacle (1) for the storing of the liquid agent and a propulsion mechanism for the propelling of a piston (2) toward an outlet of the receptacle in order to expel the agent, characterized in that the propulsion mechanism permanently acts on the piston with a propulsive force, a blocking mechanism (9, 11; 9, 16) being provided whereby a piston advance is permanently blocked and, in order to expel the agent, released; the invention also relates to an infusion pump for the long-term release of an agent, including a device according to one of the previous claims and a control apparatus that repeatedly releases the blocking mechanism in order to expel the agent.

L'invention concerne un dispositif de diffusion dosée d'un principe actif liquide, en particulier pour une pompe à perfusion, comprenant un réservoir (1) pour le stockage du principe actif liquide et un mécanisme de poussée destiné à avancer un piston (2) pour permettre la diffusion du principe actif vers une sortie du réservoir. Ce dispositif de diffusion se caractérise en ce que le mécanisme de poussée soumet le piston de façon permanente à l'action d'une force de poussée, un mécanisme de blocage (9, 11 ; 9, 16) étant conçu pour bloquer de façon permanente une avancée du piston et libérer ce piston afin de permettre la diffusion du principe actif. Cette invention concerne également une pompe à perfusion pour la diffusion prolongée d'un principe actif, comprenant un dispositif selon une des revendications précédentes et un dispositif de commande libérant de façon répétée ledit mécanisme de blocage pour permettre la diffusion du principe actif.

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