Patent ID: 9011379
Filing Date: 2015-04-21
Classification: A61M,F04B

Abstract:
1. A cassette for engagement with an infusion pump for delivery of a fluid to a subject comprising a flexible tubing through which the fluid flows and a housing comprising opposing flat outside walls respectively defining first and second ends for holding the flexible tubing, and the housing at least partially defining a flow path along which the flexible tubing is tensioned for fluid flow therein, the housing comprising another outside wall between the opposing outside walls and having two straight wall sections and a fixed, rigid curved wall located between the two straight wall sections, the fixed, rigid curved wall section having an opening between each side of the fixed, rigid curved wall and the adjacent straight wall section through which the flexible tubing passes, and the flexible tubing is configured for engaging a pumping mechanism of the infusion pump that moves the fluid through the flexible tubing, a length of the flexible tubing is initially held between the ends of the cassette in a straight line, but, when the cassette is engaged with the pumping mechanism of the pump, the length of the flexible tubing is accurately and repeatably tensioned and positioned in the flow path with the pumping mechanism stretching the flexible tubing to repeatably tension the flexible tubing to allow correct fluid flow therethrough, and the opposing flat outside walls of the first and second ends each comprising an inlet or outlet tubing support in the form of an adaptor molded therein for fixing the flexible tubing therebetween; further comprising: an anti-flow valve mechanism that is initially biased against the flexible tubing in a fluid non-delivery position to prevent flow therethrough; a member operatively associated with the cassette and the anti-flow valve mechanism to overcome a force-applying member bias to allow the flow of fluid through the flexible tubing when the housing is engaged with the infusion pump; and the housing is configured and dimensioned for engagement with the infusion pump,