Intravenous fluid monitoring
First Claim
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1. An in-line multi-parametric intravenous fluid monitoring apparatus comprising an electrical sensor for determining the identity and concentration of components of an intravenous fluid, the apparatus comprising:
- a housing adapted for fluidic interface with a fluid line assembly of a system for intravenous delivery of fluid into a patient, the housing comprising a cavity in fluid communication with the fluid;
a first sensor element comprising a pair of electrodes having a first sensing surface that is configured to interact with the intravenous fluid and to detect a complex admittance or impedance of the intravenous fluid in contact with the first sensing surface;
a second sensor element comprising a second sensing surface that is configured to interact with the intravenous fluid and to detect a complex admittance or impedance of the intravenous fluid at the second sensing surface; and
a processor configured to receive complex admittance or impedance data from the first sensing surface and the second sensing surface, wherein the first sensing surface provides independent electrical property signals relative to the second sensing surface, further wherein the processor comprises a comparator configured to compare parameters derived from the first and second sensor elements with stored expected parameter values to identify one or more components of the intravenous fluid.
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Abstract
Apparatus, systems and methods related to monitoring intravenous fluids during administration to a subject are disclosed. These apparatus, systems and methods provide near real-time monitoring of the identity of one or more components of an intravenous fluid.
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Citations
17 Claims
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1. An in-line multi-parametric intravenous fluid monitoring apparatus comprising an electrical sensor for determining the identity and concentration of components of an intravenous fluid, the apparatus comprising:
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a housing adapted for fluidic interface with a fluid line assembly of a system for intravenous delivery of fluid into a patient, the housing comprising a cavity in fluid communication with the fluid; a first sensor element comprising a pair of electrodes having a first sensing surface that is configured to interact with the intravenous fluid and to detect a complex admittance or impedance of the intravenous fluid in contact with the first sensing surface; a second sensor element comprising a second sensing surface that is configured to interact with the intravenous fluid and to detect a complex admittance or impedance of the intravenous fluid at the second sensing surface; and a processor configured to receive complex admittance or impedance data from the first sensing surface and the second sensing surface, wherein the first sensing surface provides independent electrical property signals relative to the second sensing surface, further wherein the processor comprises a comparator configured to compare parameters derived from the first and second sensor elements with stored expected parameter values to identify one or more components of the intravenous fluid. - View Dependent Claims (3, 4, 5, 6)
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2. A system for multi-parametrically monitoring the composition of fluid delivered intravenously into a patient, the system comprising:
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a fluid line assembly including one or more conduits and having a first end adapted for fluid communication with a fluid source and a second end adapted for fluid communication with an intravenous infusion device for infusion of fluid into the vascular system of the patient, and a first sensor element comprising a pair of electrodes having a first sensing surface configured to interact with the intravenous fluid and to detect a complex admittance or impedance of the intravenous fluid in contact with the first sensing surface; a second sensor element comprising a second sensing surface that is configured to interact with the intravenous fluid and to detect a complex admittance or impedance of the intravenous fluid at the second sensing surface; and one or more circuits in communication with the first and second sensor elements for activating the sensor elements or for receiving, processing, storing, displaying or transmitting data originating from the first sensing surface and second sensing surface, wherein the first and second sensing surfaces provide independent electrical property signals, wherein the one or more circuits is adapted to identify and determine the concentration of one or more active pharmaceutical agents within the fluid.
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7. A method for determining the identity and concentration of an intravenous fluid delivered to a subject in need thereof, the method comprising:
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contacting a first sensor surface with the fluid and detecting a complex admittance or impedance at the first sensor surface; contacting a second sensor surface with the fluid and detecting a complex admittance or impedance at the second sensor surface, wherein the first and second sensing surfaces provide independent electrical property signals administering the fluid to the subject; generating a multi-parametric profile characteristic of the composition of the fluid based on the independent electrical property signals from the first and second sensor surfaces; and comparing the multi-parametric profile to stored expected parameter values to identify and determine the concentration of one or more components of the fluid. - View Dependent Claims (8, 9, 10, 11)
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12. A multi-parametric intravenous fluid monitoring apparatus for determining the composition of an intravenous fluid, the apparatus comprising:
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a housing adapted for fluidic interface with a fluid line assembly of a system for intravenous delivery of fluid into a patient, the housing comprising a cavity to fluidly connect with intravenous fluid and a first end adapted for fluid communication with the source of intravenous fluid and a second end adapted for fluid communication with an intravenous infusion device for infusion of the intravenous fluid into the vascular system of the patient; a first sensor element within the cavity having a first sensing surface, the first sensor element configured to measure a first complex admittance or impedance of the intravenous fluid at the first sensing surface; a second sensor element within the cavity having a second sensing surface formed of a different conductive material than the first sensing surface, the second sensor element configured to measure a second complex admittance or impedance of the intravenous fluid at the second sensing surface; and a processor configured to receive complex admittance or impedance data from the first sensor element and the second sensor element, wherein the processor comprises a comparator configured to compare parameters derived from the first and second sensor elements with stored expected parameter values to identify and determine the concentration of one or more components of the intravenous fluid. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification