SYSTEM FOR MONITORING AND CONTROLLING PERITONEAL DIALYSIS
First Claim
1. A peritoneal dialysis system comprising:
- a cycler operable with a disposable cassette, the cassette connected to a patient line, which is capable of being placed in fluid communication with a catheter having access to a patient'"'"'s peritoneal cavity, the cycler configured to;
convey dialysis fluid to the peritoneal cavity through the patient line and the catheter during a patient fill phase;
allow the dialysis fluid to dwell within the peritoneal cavity during a patient dwell phase;
convey dialysis fluid away from the peritoneal cavity through the patient line and the catheter during a patient drain phase; and
sense, at first and second sensing locations of the disposable cassette via first and second pressure sensors, an intraperitoneal pressure (IPP) 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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Accused Products
Abstract
A peritoneal dialysis system includes a cycler operable with a disposable cassette, the cassette connected to a patient line, the cassette capable of fluid communication with a catheter having access to a patient'"'"'s peritoneal cavity, the cycler configured to: (i) convey dialysis fluid to the peritoneal cavity through the patient line and the catheter during a patient fill phase; (ii) allow the dialysis fluid to dwell within the peritoneal cavity during a patient dwell phase; (iii) convey dialysis fluid away from the peritoneal cavity through the patient line and the catheter during a patient drain phase; and (iv) sense, at first and second sensing locations of the disposable cassette via first and second pressure sensors, an 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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Citations
24 Claims
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1. A peritoneal dialysis system comprising:
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a cycler operable with a disposable cassette, the cassette connected to a patient line, which is capable of being placed in fluid communication with a catheter having access to a patient'"'"'s peritoneal cavity, the cycler configured to; convey dialysis fluid to the peritoneal cavity through the patient line and the catheter during a patient fill phase; allow the dialysis fluid to dwell within the peritoneal cavity during a patient dwell phase; convey dialysis fluid away from the peritoneal cavity through the patient line and the catheter during a patient drain phase; and sense, at first and second sensing locations of the disposable cassette via first and second pressure sensors, an intraperitoneal pressure (IPP) 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, 22)
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6. A peritoneal dialysis system comprising:
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source of dialysis fluid; a first flow path from the source of dialysis fluid to a disposable cassette and from the disposable cassette to a patient; a second flow path from the patient to the disposable cassette and from the disposable cassette to a dialysis fluid drain; a cycler configured to operate with the disposable cassette to; (i) convey dialysis fluid from the source of dialysis fluid through the first flow path to the patient and from the patient through the second flow path to the dialysis fluid drain using a pair of membrane pumps alternating to form am at least substantially continuous flow; and (ii) sense an intraperitoneal pressure (IPP) to optimize at least one of an amount of fluid flowing through the first flow path and the second flow path. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A peritoneal dialysis system comprising:
a cycler configured to; (i) a convey dialysis fluid from a dialysis fluid container through a catheter to a patient; (ii) allow the dialysis fluid to dwell within the patient; (iii) reverse a direction of dialysis fluid flow in the catheter away from the patient; and (iv) sense at first and second sensing locations of a disposable cassette using first and second pressure sensors provided by the cycler, the sensing locations in fluid communication with the catheter, an intraperitoneal pressure to optimize at least one of an amount of fluid flowing towards or away 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 peritoneal dialysis system comprising:
a cycler configured to; (i) pump 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; (ii) allow the dialysis fluid to dwell within the peritoneal cavity during a patient dwell phase; (iii) pump 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 (iv) 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 (20)
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21. A peritoneal dialysis system comprising:
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a cycler; a disposable cassette operable with the cycler; a patient line extending from the disposable cassette, the patient line connectable to a catheter having access to a patient'"'"'s peritoneal cavity; first and second pressure sensors provided by the cycler; corresponding first and second sensing locations of the disposable cassette; a patient fill phase performed by the cycler; a patient dwell phase performed by the cycler; a patient drain phase performed by the cycler; and wherein the patient fill phase is controlled by the cycler and at least one of the pressure sensors, so that the peritoneal cavity is not overpressurized during the dwell phase.
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23. A peritoneal dialysis system comprising:
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a cycler; a disposable cassette operable with the cycler; a patient line extending from the disposable cassette, the patient line connectable to a catheter having access to a patient'"'"'s peritoneal cavity; first and second pressure sensors provided by the cycler; corresponding first and second sensing locations of the disposable cassette; a patient fill phase performed by the cycler; a patient dwell phase performed by the cycler; a patient drain phase performed by the cycler; and wherein the patient drain phase is controlled by the cycler and one of the pressure sensors so as not to apply too much negative pressure during the patient drain phase. - View Dependent Claims (24)
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Specification