Peritoneal dialysis system having phase change material ("pcm") heat exchange
AssigneesBaxter International Inc., Baxter Healthcare S.A.
InventorOskar Erik Frode Styrbjorn FALLMAN
Life of this patent
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Abstract
A peritoneal dialysis (“PD”) system includes a PD fluid pump, a PD fluid heater positioned and arranged to heat fresh PD fluid pumped by the PD fluid pump, and a phase change material (“PCM”) device positioned and arranged to receive fresh PD fluid heated by the PD fluid heater. The PCM device includes a PCM having a melting temperature selected so that the PCM melts when overheated fresh PD fluid contacts the PCM, removing heat from the overheated fresh PD fluid.
Claims20
A peritoneal dialysis (“PD”) system comprising:
- a PD fluid pump;
- a PD fluid heater positioned and arranged to heat fresh PD fluid pumped by the PD fluid pump;
- and
- a phase change material (“PCM”) device positioned and arranged to receive fresh PD fluid heated by the PD fluid heater, the PCM device including a PCM having a melting temperature selected so that the PCM melts when overheated fresh PD fluid contacts the PCM, removing heat from the overheated fresh PD fluid.
A peritoneal dialysis (“PD”) system comprising:
- a PD fluid pump;
- a PD fluid heater positioned and arranged to heat fresh PD fluid pumped by the PD fluid pump;
- and
- a phase change material (“PCM”) device positioned and arranged to receive used PD fluid returning from a patient, the PCM device including a PCM having a melting temperature selected so that the PCM melts when the used PD fluid contacts the PCM, removing heat from the used PD fluid.
A phase change material (“PCM”) device comprising:
- a PCM having a melting temperature of (i) below 37° C., such as 32° C. to 34° C., for heating underheated fresh peritoneal dialysis (“PD”) fluid or for cooling used PD fluid or (ii) 37° C. or higher for cooling overheated fresh PD fluid;
- a conductive wall holding the PCM;
- and
- a shell creating a peritoneal dialysis (“PD”) fluid pathway with the conductive wall, the shell including a plurality of ports for allowing fresh or used PD fluid into and out of the PD fluid pathway.
Dependencies are inferred from the claim text.