Patent ID: 8986252
Filing Date: 2015-03-24
Classification: A61M,Y02A

Abstract:
1. A system for administering a medical fluid to an individual comprising: a flexible tube; a pumping device; at least two cassettes each comprising a housing, wherein the cassettes are designed to be inserted into the pumping device, respectively; a source of medical fluid, wherein the source of medical fluid is fluidly coupled to the cassette; and an occlusion sensor device having infra-red sensors, wherein the first cassette comprises the tube comprising a material selected from the group consisting of opaque, infra-red reflective, and combinations thereof, and a bias bump located adjacent to a portion of the tube to prevent a sidewall of the tube located on the same side as the bias bump from expanding past the bias bump so that a sidewall of the tube opposite the bias bump can expand further toward the infra-red sensor than would be possible without the bias bump to increase the sensitivity of the occlusion detection when the first cassette is inserted in the pumping device; wherein the second cassette includes a false reading component for the occlusion sensor device to reflect a sufficient and consistent amount of an emitted signal back to the occlusion sensor device such that the occlusion sensor device detects no change in the intensity of the reflected infra-red signal when the second cassette is inserted in the pumping device.