DIALYSIS FLUID HEATING ALGORITHMS
First Claim
Patent Images
1. A dialysis fluid heating system comprising:
- a dialysis fluid heater;
a dialysis fluid carrying element in operable communication with the dialysis fluid heater to heat a dialysis fluid; and
a logic implementer configured to control the heater using(i) a heater input determined from a dialysis fluid temperature delta and a dialysis fluid flowrate, and(ii) a potential adjustment of the temperature delta using a measured dialysis fluid outlet temperature.
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Abstract
A dialysis fluid heating system includes a dialysis fluid heater; a dialysis fluid carrying element in operable communication with the dialysis fluid heater to heat a dialysis fluid; and a logic implementer configured to control the heater using (i) a heater input determined from a dialysis fluid temperature delta and a dialysis fluid flowrate, and (ii) a potential adjustment of the temperature delta using a measured dialysis fluid outlet temperature.
77 Citations
22 Claims
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1. A dialysis fluid heating system comprising:
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a dialysis fluid heater; a dialysis fluid carrying element in operable communication with the dialysis fluid heater to heat a dialysis fluid; and a logic implementer configured to control the heater using (i) a heater input determined from a dialysis fluid temperature delta and a dialysis fluid flowrate, and (ii) a potential adjustment of the temperature delta using a measured dialysis fluid outlet temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A dialysis fluid heating system comprising:
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a dialysis fluid heater; a dialysis fluid carrying element in operable communication with the dialysis fluid heater to heat a dialysis fluid; and a logic implementer configured to control the heater using (i) a heater input determined from (a) a first dialysis fluid temperature delta relating a desired dialysis fluid outlet temperature and a measured dialysis fluid inlet temperature and (b) a dialysis fluid flowrate, and (ii) a feedback adjustment of the temperature delta using a feedback algorithm applied to a second dialysis fluid temperature delta relating the desired dialysis fluid outlet temperature and a measured dialysis fluid outlet temperature.
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15. A dialysis fluid heating system comprising:
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a dialysis fluid heater; a dialysis fluid carrying element in operable communication with the dialysis fluid heater to heat a dialysis fluid; and a logic implementer configured to control the heater using, (i) a feedforward determination of a heater input, and (ii) a feedback adjustment of a parameter used in the feedforward determination. - View Dependent Claims (16, 17, 18)
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19. A dialysis fluid heating system comprising:
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a primary inductor coil; a susceptor induced by the primary coil to heat a dialysis fluid; a sensor positioned to measure an electrical property of one of the susceptor and the primary inductive coil; and a logic implementer configured to determine a resistance of the susceptor from the measured electrical property, and relate the determined resistance to a temperature of the susceptor. - View Dependent Claims (20, 21, 22)
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Specification