MEDICAL FLUID SENSORS AND RELATED SYSTEMS
First Claim
1. A method comprising:
- using a dialysis fluid pump of a dialysis machine to deliver dialysis fluid to a first portion of a cartridge, the first portion of the cartridge being positioned within a magnetic field;
exciting atoms in the dialysis fluid in the first portion of the cartridge by applying radio frequency energy to the dialysis fluid in the first portion of the cartridge;
receiving radio frequency energy generated by the excited atoms in the dialysis fluid in the first portion of the cartridge; and
determining a concentration of a substance in the dialysis fluid based on the received radio frequency energy generated by the excited atoms in the dialysis fluid in the first portion of the cartridge.
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Accused Products
Abstract
This disclosure relates to medical fluid sensors and related systems and methods. In certain aspects, a method includes using a medical fluid pump of a medical fluid pumping machine, such as a hemodialysis machine, to deliver medical fluid to a first portion of a cartridge that is positioned within a magnetic field, exciting atoms in the medical fluid in the first portion of the cartridge by applying radio frequency energy to the medical fluid in the first portion of the cartridge, receiving radio frequency energy generated by the excited atoms in the medical fluid in the first portion of the cartridge, and determining a concentration of a substance in the medical fluid based on the received radio frequency energy generated by the excited atoms in the medical fluid in the first portion of the cartridge.
15 Citations
42 Claims
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1. A method comprising:
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using a dialysis fluid pump of a dialysis machine to deliver dialysis fluid to a first portion of a cartridge, the first portion of the cartridge being positioned within a magnetic field; exciting atoms in the dialysis fluid in the first portion of the cartridge by applying radio frequency energy to the dialysis fluid in the first portion of the cartridge; receiving radio frequency energy generated by the excited atoms in the dialysis fluid in the first portion of the cartridge; and determining a concentration of a substance in the dialysis fluid based on the received radio frequency energy generated by the excited atoms in the dialysis fluid in the first portion of the cartridge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A dialysis system comprising:
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a magnet assembly that generates a magnetic field, the magnet assembly defining a cavity configured to receive a first portion of a cartridge; a dialysis fluid pump that is operable to pump dialysis fluid to the first portion of the cartridge when the first portion of the cartridge is disposed in the cavity of the magnet assembly; and a radio frequency device configured to receive the first portion of the cartridge when the first portion of the cartridge is disposed in the cavity of the magnet assembly, the radio frequency device being operable to receive radio frequency energy generated by excited atoms in the dialysis fluid in the first portion of the cartridge when the first portion of the cartridge is disposed in the cavity of the magnet assembly and dialysis fluid has been pumped to the first portion of the cartridge. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification