Cassettes and methods of using same
First Claim
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.
1 Assignment
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Accused Products
Abstract
The present disclosure provides cassettes and methods of using same for the delivery of fluids to a patient using fluid delivery systems. In a general embodiment, the cassettes of the present disclosure include a flexible tube, a housing having a recessed area and first and second ends for holding the flexible tube, and at least two additional components including, for example, different sensors, false reading components for sensors, anti-flow valve means, insertion guides, directional indicators, latch mechanisms, kink-prevention notches, etc. Such additional components provide the cassettes of the present disclosure with several advantages including, for example, quality control, efficiency of use, cost effectiveness, and safety of use.
50 Citations
21 Claims
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1. A system for administering a medical fluid to an individual comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for administering a medical fluid to an individual comprising:
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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 air-in-line sensor device having infrared-sensors, wherein the first cassette includes a detection chamber of the air-in-line sensor device so constructed and arranged for receiving a portion of the flexible tube; and wherein the second cassette includes a false reading component for the air-in-line sensor device to reflect a sufficient and consistent amount of an emitted signal back to the air-in-line sensor device such that the air-in-line sensor device detects no change in the strength of the reflected infra-red signal when the second cassette is inserted in the pumping device. - View Dependent Claims (21)
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Specification