Peritoneal dialysis system having peristaltic pump and weigh scale
AssigneesBaxter International Inc., Baxter Healthcare S.A.
InventorOlof JANSSON
Life of this patent
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Abstract
A peritoneal dialysis system comprises a cycler including a peristaltic pump actuator, and a weigh scale; a disposable set including a peristaltic pump tube operable with the peristaltic pump actuator, a patient line in fluid communication with the peristaltic pump tube, and a heating container in operable communication with the weigh scale; and a control unit configured to cause (i) the peristaltic pump actuator to operate at a rotational speed to cause an amount of fluid to enter the heating container, (ii) weigh the amount of fluid, and (iii) determine at least one of a mass rate or volume rate for the rotational speed.
Claims26
A peritoneal dialysis system comprising:
- a cycler including
- a peristaltic pump actuator, and
- a weigh scale;
- a disposable set including
- a peristaltic pump tube operable with the peristaltic pump actuator, and
- a heating container in operable communication with the weigh scale;
- and
- a control unit configured to (i) cause the peristaltic pump actuator to operate at a rotational speed to deliver an amount of fluid to the heating container, (ii) record a weight of the amount of fluid from the weigh scale, and (iii) determine at least one of a mass rate or volume rate for the rotational speed using the recorded weight.
A peritoneal dialysis system comprising:
- a cycler including
- a peristaltic pump actuator,
- a weigh scale, and
- a pressure sensor,
- a disposable set including
- a peristaltic pump tube operable with the peristaltic pump actuator,
- a patient line in fluid communication with the peristaltic pump tube, wherein the pressure sensor is positioned and arranged to measure pressure in the patient line, and
- a heating container in operable communication with the weigh scale;
- and
- a control unit configured to (i) cause the peristaltic pump actuator to operate at a rotational speed to deliver an amount of fluid to the heating container, (ii) record a weight of the amount of fluid from the weigh scale, (iii) record a pressure of the fluid from the pressure sensor, and (iv) determine a transformation function that relates flowrate or mass rate as a function of the rotational speed and the recorded pressure.
A peritoneal dialysis system comprising:
- a cycler including
- a peristaltic pump actuator, and
- a weigh scale;
- a disposable set including
- a peristaltic pump tube operable with the peristaltic pump actuator, and
- a heating container in operable communication with the weigh scale;
- and
- a control unit configured to (i) cause the pump actuator to actuate the pumping portion at a strokes per minute (“SPM”) to deliver an amount of fluid to the heating container, (ii) record a weight of the amount of fluid from the weigh scale, and (iii) determine at least one of a mass rate or volume rate for the SPM using the recorded weight.
Dependencies are inferred from the claim text.