Infrared reflective air-in-line sensor system
First Claim
1. An adapter device comprising:
- first and second cylindrical portions defining a fluid flow channel, the first cylindrical portion comprising two adjacent wedge-shaped protrusions, each wedge-shaped protrusion having at least a portion that is infrared transmissive and each wedge-shaped protrusion defining an outer surface and an inner surface, the fluid flow channel extends through both of the first and second cylindrical portions, and a portion of the inner surface is infrared transmissive.
3 Assignments
0 Petitions
Accused Products
Abstract
Air-in-line sensor systems and methods of using same are provided. The system includes an adapter (60) including first and second cylindrical portions defining a fluid flow channel, the first cylindrical portion comprising two adjacent wedge-shaped protrusions (68). Each wedge-shaped protrusion is infrared transmittive and defines an outer surface and an inner surface. The system further includes a tube and an infrared reflective sensor having an infrared light emitter (42,52) and an infrared light detector (44,54). The infrared light emitter and the infrared light detector are positioned at or near an adapter so that an infrared light can be transmitted to the adapter and at least a portion of the infrared light reflected off the adapter can be detected by the infrared light detector.
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Citations
19 Claims
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1. An adapter device comprising:
first and second cylindrical portions defining a fluid flow channel, the first cylindrical portion comprising two adjacent wedge-shaped protrusions, each wedge-shaped protrusion having at least a portion that is infrared transmissive and each wedge-shaped protrusion defining an outer surface and an inner surface, the fluid flow channel extends through both of the first and second cylindrical portions, and a portion of the inner surface is infrared transmissive. - View Dependent Claims (2, 3, 4)
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5. A cassette comprising:
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a rigid frame; a tube; and at least one adapter comprising first and second cylindrical portions defining a fluid flow channel, the first cylindrical portion comprising two adjacent wedge-shaped protrusions, each wedge-shaped protrusion having at least a portion that is infrared transmissive and each wedge-shaped protrusion defining an outer surface and an inner surface, the fluid flow channel extends through both of the first and second cylindrical portions, and a portion of the inner surface is infrared transmissive. - View Dependent Claims (6, 7, 8, 9)
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10. A sensor system comprising:
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a pumping device comprising at least one infrared reflective sensor having an infrared light emitter and an infrared detector; and a cassette removably attached to the pumping device, the cassette comprising a tube and at least one adapter comprising a first hollow cylindrical portion and a second hollow cylindrical portion defining a fluid flow channel, the first hollow cylindrical portion comprising first and second adjacent wedge-shaped protrusions, each wedge-shaped protrusion having at least a portion that is infrared transmissive and each wedge-shaped protrusion defining an outer surface and an inner surface, the fluid flow channel extends through both of the first and second hollow cylindrical portions, and a portion of the inner surface is infrared transmissive, wherein the infrared reflective sensor is positioned so that an infrared light can be transmitted through the outer surface of the first wedge-shaped protrusion and at least a portion of the infrared light reflected off an inner surface of the first hollow cylindrical portion can be detected by the infrared detector. - View Dependent Claims (11, 12, 13, 14)
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15. A method of detecting air in a tubing set for an enteral feeding system, the method comprising the steps of:
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providing a cassette having an adapter sealingly attached to an enteral feeding tube, the adapter comprising a first hollow cylindrical portion and a second hollow cylindrical portion defining a fluid flow channel, the first hollow cylindrical portion comprising a first wedge-shaped protrusion adjacent to a second wedge-shaped protrusion, each of the first and second wedge-shaped protrusions having at least a portion that is infrared transmissive and each of the first and second wedge-shaped protrusions defining an outer surface and an inner surface, the fluid flow channel extends through both of the first hollow cylindrical portion and the second hollow cylindrical portion, and a portion of the inner surface is infrared transmissive; and detecting air within the enteral feeding tube by transmitting an infrared light to the outer surface of the first wedge-shaped protrusion and detecting an amount of reflected infrared light using a detector. - View Dependent Claims (16, 17, 18, 19)
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Specification