Apparatus and methods for multiple fluid infusion

A - Human Necessities – 61 – M

Patent

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A61M 5/145 (2006.01) A61M 5/148 (2006.01) A61M 5/14 (2006.01)

Patent

CA 2200057

We disclose apparatus and methods for delivering for patient infusion or other use two or more fluids either sequentially or simultaneously. The apparatus (100) has a fluid delivery compartment (101) containing a first infusion fluid (103), a flexible membrane (104), and an openable bag (150) containing a second infusion fluid (152). An attached gas reaction compartment (121) contains chemical reactants (123, 134) which, when combined, react to evolve gas (122). The gas (122) expands a gas expansion chamber (102) causing the membrane (104) to move into the fluid delivery compartment (101), displacing the first infusion fluid (103). The membrane (104) eventually contacts and compresses the openable bag (150). Pressure from the membrane (104) causes the bag (150) to open and discharge its contents out of the infusion device (100).

L'invention se rapporte à un appareil et à des procédés destinés à l'administration simultanée ou séquentielle, par perfusion ou autre, d'au moins deux liquides à un patient. L'appareil (100) comprend un compartiment (101) de libération de liquides contenant un premier liquide de perfusion (103), une membrane souple (104) et une poche (150) pouvant être ouverte, qui contient un second liquide de perfusion (152). Un compartiment (121) de réaction gazeuse rapporté contient des réactifs chimiques (123, 134) qui, lorsqu'ils sont mélangés, réagissent pour produire un gaz (122). Ce gaz (122) entraîne la dilatation d'une chambre (102) à dilatation gazeuse, ce qui déplace la membrane (104) à l'intérieur du compartiment (101) de libération de liquide de façon à déplacer le premier liquide de perfusion (103). La membrane (104) entre finalement en contact avec la poche (150) et la comprime. La pression exercée par la membrane (104) entraîne l'ouverture de la poche (150) et l'évacuation de son contenu hors du dispositif de perfusion (100).

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