Mems fluid pump with integrated pressure sensor for...

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/168 (2006.01) F04B 19/00 (2006.01)

Patent

CA 2741195

The invention relates to a pumping device including a pump (1) comprising - a pumping chamber (11) having a variable volume, - an inlet (2) communicating with the pumping chamber (11) and comprising a valve, - an outlet (5) communicating with the pumping chamber and comprising a valve, - an actuator adapted to change the volume of the pumping chamber, - a fluidic pathway comprising said inlet (2), said pumping chamber (11), said outlet (5) and a downstream line (7) situated downstream of the outlet valve, - a pressure sensor (4) for measuring the pressure between the valves of said pathway, - processing means for processing the received pressure data from the pressure sensor (4). The invention also covers a method for detecting a dysfunction in a pumping device as defined above.

La présente invention concerne un dispositif de pompage incluant une pompe (1), qui comprend les éléments suivants : une chambre de pompage (11) avec un volume variable; - un orifice d'admission (2) en communication avec la chambre de pompage (11) et comprenant une valve; - un orifice de sortie (5) en communication avec la chambre de pompage et comprenant une valve; - un organe de commande adapté pour changer le volume de la chambre de pompage; - une voie fluidique comprenant ledit orifice d'admission (2), ladite chambre de pompage (1 1), ledit orifice de sortie (5) et une conduite en aval (7) située en aval de la valve de sortie; - un capteur de pression (4) destiné à mesurer la pression entre les valves de ladite voie; - et des moyens de traitement destinés à traiter les données de pression reçues depuis le capteur de pression (4). L'invention porte également sur un procédé de détection d'un dysfonctionnement dans un dispositif de pompage tel que défini ci-dessus.

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