Apparatus for recognizing a pressure change in the liquid...

G - Physics – 01 – N

Patent

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G01N 7/00 (2006.01) A61M 5/168 (2006.01)

Patent

CA 2639992

The invention relates to an insulin pump (1) with an infusion set adapter (21) having a diaphragm (7) exposed to the liquid path (2). Arranged in the housing (20) of the insulin pump (1) is a measurement arrangement comprising emitter (4) and sensor (5), by means of which a bowing of the diaphragm (7) following a change in the liquid pressure in the liquid path (2) can be detected without contact, for recognizing an occlusion in the liquid path (2). This yields the advantage that an accurate and delay-free occlusion recognition with low system cost becomes possible.

L'invention concerne une pompe à insuline (1) dotée d'un adaptateur de perfusion (21) qui présente une membrane (7) située sur le parcours de liquide (2). Un dispositif de mesure constitué d'un émetteur (4) et d'un détecteur (5), qui permet de détecter sans contact un bombement de la membrane (7) suite à une modification de la pression de liquide dans le parcours de liquide (2), est disposé dans le boîtier (20) de la pompe à insuline (1), pour la détection d'une occlusion du parcours de liquide (2). On obtient ainsi l'avantage de pouvoir détecter une occlusion de manière précise et sans retard, pour un coût d'équipement minime.

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