Method for monitoring and controlling peritoneal dialysis therapy
First Claim
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1. A method of performing peritoneal dialysis, comprising the steps of:
- conveying dialysis fluid to a peritoneal cavity through a catheter during a patient fill phase;
allowing the dialysis fluid to dwell within the peritoneal cavity during a patient dwell phase;
conveying dialysis fluid away from the peritoneal cavity through the catheter during a patient drain phase; and
sensing at first and second sensing locations of a disposable cassette via first and second pressure sensors to measure intraperitoneal pressure through the catheter to optimize an amount of fluid conveyed during the patient fill phase, so that the peritoneal cavity is not overpressurized during the patient dwell phase.
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Abstract
Peritoneal Dialysis systems, methods, and catheters are provided for performing peritoneal dialysis therapies. Multiple fluid pathways are provided to a patient'"'"'s peritoneal cavity for conveying dialysis fluid to and from the patient.
164 Citations
19 Claims
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1. A method of performing peritoneal dialysis, comprising the steps of:
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conveying dialysis fluid to a peritoneal cavity through a catheter during a patient fill phase; allowing the dialysis fluid to dwell within the peritoneal cavity during a patient dwell phase; conveying dialysis fluid away from the peritoneal cavity through the catheter during a patient drain phase; and sensing at first and second sensing locations of a disposable cassette via first and second pressure sensors to measure intraperitoneal pressure through the catheter to optimize an amount of fluid conveyed during the patient fill phase, so that the peritoneal cavity is not overpressurized during the patient dwell phase. - View Dependent Claims (2, 3, 4, 5)
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6. A method of performing peritoneal dialysis, comprising the steps of:
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providing a source of dialysis fluid; establishing a flow path from the source of dialysis fluid to a first lumen of a peritoneal dialysis catheter; establishing a flow path from a dialysis fluid drain to a second lumen of the peritoneal dialysis catheter; conveying dialysis fluid from the source of dialysis fluid through the source flow path and the first lumen and from the second lumen and the drain flow path to the dialysis fluid drain using a pair of membrane pumps alternating to form an at least substantially continuous flow through the first and second lumens; and sensing an intraperitoneal pressure to optimize at least one of an amount of fluid flowing through the first lumen and the second lumen. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method of providing peritoneal dialysis to a patient, comprising the steps of:
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conveying dialysis fluid from a dialysis fluid container through a catheter to the patient; allowing the dialysis fluid to dwell within the patient; reversing a direction of dialysis fluid flow in the catheter away from the patient; and sensing at first and second sensing locations of a disposable cassette via first and second pressure sensors, the sensing locations in fluid communication with the catheter, an intraperitoneal pressure to optimize at least one of an amount of fluid flowing toward or from the patient, so that the patient is comfortable while the dialysis fluid dwells within the patient. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of performing peritoneal dialysis, comprising the steps of:
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pumping at least substantially continuously using a pair of alternating pumps to convey dialysis fluid to a peritoneal cavity through a catheter during a patient fill phase; allowing the dialysis fluid to dwell within the peritoneal cavity during a patient dwell phase; pumping at least substantially continuously using the pair of alternating pumps to convey dialysis fluid away from the peritoneal cavity through the catheter during a patient drain phase; and measuring intraperitoneal pressure through the catheter to optimize an amount of fluid conveyed during the patient fill phase, so that the peritoneal cavity is not overpressurized during the patient dwell phase.
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Specification