A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 39/22 (2006.01) A61M 5/175 (2006.01) F16K 7/12 (2006.01) F16K 25/00 (2006.01) F16K 27/00 (2006.01) F16K 41/10 (2006.01)
Patent
CA 2565009
A valve mechanism for use in an implantable infusion pump includes a fluid compartment and a dry-component compartment. The compartments are sealed so that fluid cannot pass between compartments. A flexible membrane is located between the compartments and allows limited mechanical displacement between the compartments, yet prevents any fluid communication therebetween. The fluid compartment includes a valve that is positioned between the inlet chamber and the outlet chamber. The valve includes a movable trigger member that selectively causes the valve to move between an open position and a closed position. The trigger member is positioned adjacent to the first surface of the membrane. The dry-component compartment includes an actuator, which is positioned against the membrane so that generated movement of the actuator may selectively transfer to the trigger member through non-invasive deformation of the flexible membrane. In this arrangement, the valve located within the hermitically-sealed fluid compartment is effectively controlled from the dry component compartment. The flexible membrane includes at least one deformed region that extends beyond the membrane plane, which can be ripple-shaped or bellows-shaped.
Codman Neuro Sciences Sarl
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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