Dialysis system having trending and alert generation

• US 8,057,679 B2
• Filed: 07/09/2008
• Issued: 11/15/2011
• Est. Priority Date: 07/09/2008
• Status: Active Grant

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Inventors: Yu, Anping, Grayson, James, Childers, Robert W.
• Primary Examiner(s): DRODGE, JOSEPH W
• Application Number:
  US12/170,220
• Publication Number:
  US 20100010427A1
• Time in Patent Office: 1,224 Days
• Field of Search: 210/96.1, 210/96.2, 210/141, 210/143, 210/321.65, 210645-647, 210/87, 604/29, 604/65, 604/67, 600/300, 600508-523, 702/19, 705/2, 705/3, 706 45- 48, 706/61, 706/924, 700 28- 33, 700/273
• US Class Current: 210/645
• CPC Class Codes: A61M 1/1522 the interface being evacuated interfaces to enhance contact
• CPC Class Codes: A61M 1/155 with treatment-fluid pumping means or components thereof
• CPC Class Codes: A61M 1/159 specially adapted for peritoneal dialysis
• CPC Class Codes: A61M 1/16 with membranes
• CPC Class Codes: A61M 1/1603 Regulation parameters
• CPC Class Codes: A61M 1/28 Peritoneal dialysis ; Other peritoneal treatment, e.g. oxygenation
• CPC Class Codes: A61M 1/281 Instillation other than by gravity
• CPC Class Codes: A61M 1/282 Operational modes
• CPC Class Codes: A61M 1/287 Dialysates therefor
• CPC Class Codes: A61M 1/341 by measuring the filtrate rate or volume
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3303 Using a biosensor
• CPC Class Codes: A61M 2205/3327 Measuring
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/3553 remote, e.g. between patient's home and doctor's office
• CPC Class Codes: A61M 2205/3576 with non implanted data transmission devices, e.g. using external transmitter or receiver
• CPC Class Codes: A61M 2205/3592 using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2230/005 Parameter used as control input for the apparatus
• CPC Class Codes: A61M 2230/30 Blood pressure A61M2230/04 takes precedence
• CPC Class Codes: B01D 61/30 : Accessories; Auxiliary operation
• CPC Class Codes: B01D 61/32 : Controlling or regulating
• CPC Class Codes: G16H 20/40 : relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture

Abstract

A peritoneal dialysis system includes: an automated peritoneal dialysis (“APD”) machine configured to remove ultrafiltrate (“UF”) from a patient and record how much UF has been removed; and a logic implementer configured to (i) form a first moving average UF removed trend, (ii) determine a trending range around the first moving average UF removed trend, (iii) determine at least one of an upper and lower UF removed limit from the trending range, (iv) form a second moving average UF removed trend, and (v) alert if the second moving average UF removed trend moves outside of the at least one UF removed limit.

Claims

1. A peritoneal dialysis system comprising:

an automated peritoneal dialysis (“

APD”

) machine configured to remove ultrafiltrate (“

UF”

) from a patient and record how much UF has been removed; and

a logic implementer configured to (i) form a first moving average UF removed trend, (ii) determine a trending range around the first moving average UF removed trend, (iii) determine at least one of an upper and lower UF removed limit from the trending range, (iv) form a second moving average UF removed trend, (v) provide a notification if the second moving average UF removed trend moves outside of the at least one UF removed limit and (vi) determine if the notification is due to at least (a) a lack of patient compliance or (b) a therapy prescription issue.

2. The peritoneal dialysis system of claim 1, wherein the logic implementer is housed at one of the APD machine and a server computer in communication with the APD machine.

3. The peritoneal dialysis system of claim 1, wherein the first moving average UF removed trend is of a longer duration than the second moving average UF removed trend.

4. The peritoneal dialysis system of claim 1, wherein the upper limit is formed by adding a factor multiplied by the trending range to the first moving average UF removed trend, and the lower limit is formed by subtracting the factor multiplied by the trending range to the first moving average UF removed trend.

5. The peritoneal dialysis system of claim 1, the notification provided if (i) the UF removed trend moves outside the at least one UF removed limit for a certain number of consecutive days or (ii) the UF removed trends moves outside the at least one UF removed limit and the patient'"'"'s blood pressure rises above a limit.

6. A peritoneal dialysis method comprising:

(i) programming an automated peritoneal dialysis dialysis (“

APD”

) machine to remove ultrafiltrate (“

UF”

) from a patient;

(ii) recording how much UF has been removed;

(iii) forming a first moving average UF removed trend;

(iv) determining a trending range around the first moving average UF removed trend;

(v) determining at least one of an upper and lower UF removed limit from the trending range;

(vi) forming a second moving average UF removed trend;

(vii) providing a notification if the second moving average UF removed trend moves outside of the at least one UF removed limit; and

(viii) determining if the notification is due to at least (a) a lack of patient compliance or (b) a therapy prescription issue.

7. The peritoneal dialysis method of claim 6, which includes performing the steps (iii) to (viii) at the APD machine or at a server computer in communication with the APD machine.

8. The peritoneal dialysis method of claim 6, which includes forming the first moving average UF removed trend so as to be of a longer duration than the second moving average UF removed trend.

9. The peritoneal dialysis method of claim 6, wherein forming the upper limit includes adding a factor multiplied by the trending range to the first moving average UF removed trend, and wherein forming the lower limit includes subtracting the factor multiplied by the trending range to the first moving average UF removed trend.

10. The peritoneal dialysis method of claim 6, which includes providing the notification if (i) the UF removed trend moves outside the at least one UF removed limit for a certain number of consecutive days or (ii) the UF removed trends moves outside the at least one UF removed limit and the patient'"'"'s blood pressure rises above a limit.