Drain and fill logic for automated peritoneal dialysis
First Claim
Patent Images
1. An automated peritoneal dialysis system comprising:
- at least one dialysis fluid pump configured to pump a dialysis fluid to and from a patient'"'"'s peritoneal cavity during a multi-cycle dialysis therapy, the multi-cycle dialysis therapy including a plurality of patient fills, dwells, and drains;
at least one processor; and
at least one memory device storing a plurality of instructions executed by the at least one processor during the multi-cycle dialysis therapy to;
(i) control the dialysis fluid pumped by the at least one dialysis fluid pump to and from the patient'"'"'s peritoneal cavity, (ii) calculate cumulative ultrafiltration, and (iii) reduce a prescribed fill volume if an amount of a prior incomplete one of the plurality of drains from the patient'"'"'s peritoneal cavity causes the cumulative ultrafiltration at an end of the prior incomplete drain from the patient'"'"'s peritoneal cavity to exceed a negative ultrafiltration limit.
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Abstract
A system and method for automatically adjusting a Continuous Cycling Peritoneal Dialysis (“CCPD”) therapy to minimize the potential for excess intra-peritoneal volume. The adjustments are made at the end of the drain, just prior to the next fill. The adjustments short the next fill, if necessary, to limit the intra-peritoneal volume, add a cycle, if necessary, to use all of the available dialysis solution and will average the remaining dwell time to maximize the therapeutic benefit of the therapy in the allotted time. In another embodiment, a tidal therapy using trended patient UF data is provided.
56 Citations
26 Claims
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1. An automated peritoneal dialysis system comprising:
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at least one dialysis fluid pump configured to pump a dialysis fluid to and from a patient'"'"'s peritoneal cavity during a multi-cycle dialysis therapy, the multi-cycle dialysis therapy including a plurality of patient fills, dwells, and drains; at least one processor; and at least one memory device storing a plurality of instructions executed by the at least one processor during the multi-cycle dialysis therapy to;
(i) control the dialysis fluid pumped by the at least one dialysis fluid pump to and from the patient'"'"'s peritoneal cavity, (ii) calculate cumulative ultrafiltration, and (iii) reduce a prescribed fill volume if an amount of a prior incomplete one of the plurality of drains from the patient'"'"'s peritoneal cavity causes the cumulative ultrafiltration at an end of the prior incomplete drain from the patient'"'"'s peritoneal cavity to exceed a negative ultrafiltration limit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An automated peritoneal dialysis system comprising:
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at least one dialysis fluid pump configured to pump a dialysis fluid to and from a patient'"'"'s peritoneal cavity during a multi-cycle dialysis therapy, the multi-cycle dialysis therapy including a plurality of patient fills, dwells, and drains; at least one processor; and at least one memory device storing a plurality of instructions executed by the at least one processor during the multi-cycle dialysis therapy to;
(i) control the at least one dialysis fluid pump, (ii) calculate cumulative drain volume and cumulative fill volume to determine a number of remaining cycles by dividing a total remaining therapy volume by a calculated fill volume, wherein the calculated fill volume is higher or lower than a prescribed fill volume, in order to use substantially all of a prescribed therapy volume, and (iii) if the determined number of remaining cycles is greater than zero, initiate at least one of the determined number of remaining cycles. - View Dependent Claims (18, 19, 20, 21, 22)
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23. An automated peritoneal dialysis system comprising:
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at least one dialysis fluid pump configured to pump a dialysis fluid to and from a patient'"'"'s peritoneal cavity during a multi-cycle dialysis therapy, the multi-cycle dialysis therapy including a plurality of patient fills, dwells, and drains; at least one processor; and at least one memory device storing a plurality of instructions executed by the at least one processor during the multi-cycle dialysis therapy to;
(i) control the at least one dialysis fluid pump, (ii) calculate cumulative drain volume and cumulative fill volume to determine a number of remaining cycles by (a) adding one plus (a total remaining therapy volume divided by a prescribed fill volume) if a prior one of the plurality of drains was complete or (b) dividing the total remaining therapy volume by (the prescribed fill volume multiplied by a prescribed tidal percent) if the prior one of the plurality of drains was incomplete, wherein if the determined number of remaining cycles is greater than zero, initiate at least one of the determined number of remaining cycles, and if a cycle is added, to calculate a new fill volume by dividing the total remaining therapy volume by the number of remaining cycles. - View Dependent Claims (24, 25, 26)
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Specification