Drain and fill logic for automated peritoneal dialysis
First Claim
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1. An automated peritoneal dialysis method comprising:
- pumping dialysis fluid to and from a dialysis machine and a patient over a multi-cycle dialysis therapy including a plurality of patient fills, dwells, and drains;
providing a logic implementer with the dialysis machine to (i) calculate cumulative ultrafiltration during the multi-cycle dialysis therapy, and (ii) reduce a prescribed volume for at least one of the plurality of patient fills through controlling the pumping of the dialysis fluid to and from the dialysis machine when an amount of a prior incomplete one of the plurality of drains causes the cumulative ultrafiltration at an end of the prior incomplete drain 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.
40 Citations
20 Claims
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1. An automated peritoneal dialysis method comprising:
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pumping dialysis fluid to and from a dialysis machine and a patient over a multi-cycle dialysis therapy including a plurality of patient fills, dwells, and drains; providing a logic implementer with the dialysis machine to (i) calculate cumulative ultrafiltration during the multi-cycle dialysis therapy, and (ii) reduce a prescribed volume for at least one of the plurality of patient fills through controlling the pumping of the dialysis fluid to and from the dialysis machine when an amount of a prior incomplete one of the plurality of drains causes the cumulative ultrafiltration at an end of the prior incomplete drain to exceed a negative ultrafiltration limit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An automated peritoneal dialysis method comprising:
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pumping dialysis fluid to and from a dialysis machine and a patient over a multi-cycle dialysis therapy including a plurality of patient fills, dwells, and drains; providing a logic implementer with the dialysis machine to (i) calculate cumulative ultrafiltration during the multi-cycle dialysis therapy, and (ii) reduce a prescribed volume for at least one of the plurality of patient fills through controlling the pumping of the dialysis fluid to and from the dialysis machine when an amount of a prior incomplete one of the plurality of drains causes the cumulative ultrafiltration at an end of the prior incomplete drain to fall below a threshold amount.
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13. An automated peritoneal dialysis method comprising:
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pumping dialysis fluid to and from a dialysis machine and a patient according to a prescribed fill volume and a prescribed therapy volume during a multi-cycle dialysis therapy that includes a plurality of patient fills, dwells, and drains; providing a logic implementer with the dialysis machine to (i) calculate a volume for at least one of the plurality of patient fills that is higher or lower than the prescribed fill volume, and (ii) calculate and readjust when necessary a number of remaining cycles by dividing a total remaining therapy volume by the calculated fill volume, so as to use all or substantially all of the prescribed therapy volume, the readjusting accomplished through controlling the pumping of the dialysis fluid to and from the dialysis machine. - View Dependent Claims (14, 15, 16, 17)
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18. An automated peritoneal dialysis method comprising:
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pumping dialysis fluid to and from a dialysis machine and a patient during a multi-cycle dialysis therapy including a plurality of patient fills, dwells, and drains; providing a logic implementer with the dialysis machine to (i) calculate a number of remaining cycles by (a) adding one plus a total remaining therapy volume divided by a prescribed volume for one of the patient fills when a prior one of the patient drains is a complete drain or (b) dividing the total remaining therapy volume by the prescribed fill volume multiplied by a prescribed tidal percent when the prior one of the patient drains is an incomplete drain and (ii) when a cycle is added, calculate a new fill volume by dividing the total remaining therapy volume by the number of remaining cycles including the added cycle, and accomplish the addition of the cycle through controlling of the pumping of the dialysis fluid to and from the dialysis machine. - View Dependent Claims (19, 20)
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Specification