METHOD AND APPARATUS FOR MONITORING AND CONTROLLING PERITONEAL DIALYSIS THERAPY

• US 20130150780A1
• Filed: 11/26/2012
• Published: 06/13/2013
• Est. Priority Date: 02/10/2000
• Status: Active Grant

• Current Assignee: Baxter International Inc.
• Original Assignee: Baxter International Inc.
• Inventors: Childers, Robert Warren, Eerlingen, Vital, Balteau, Patrick, Belongie, Duane
• Granted Patent: US 9,474,842 B2
• Time in Patent Office: Days
• US Class Current: 604/28
• CPC Class Codes: A61M 1/154 with sensing means or components thereof
• CPC Class Codes: A61M 1/155 with treatment-fluid pumping means or components thereof
• CPC Class Codes: A61M 1/1562 Details of incorporated reservoirs
• CPC Class Codes: A61M 1/1565 Details of valves
• CPC Class Codes: A61M 1/159 specially adapted for peritoneal dialysis
• 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 1/285 Catheters therefor
• CPC Class Codes: A61M 2205/123 with incorporated reservoirs
• CPC Class Codes: A61M 2205/128 with incorporated valves
• CPC Class Codes: A61M 2205/17 with redundant control systems
• CPC Class Codes: A61M 2205/3331 Pressure; Flow
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site
• CPC Class Codes: A61M 2205/3351 Controlling upstream pump pressure
• CPC Class Codes: A61M 2205/3355 Controlling downstream pump pressure
• CPC Class Codes: A61M 5/14224 Diaphragm type

Abstract

A method of performing peritoneal dialysis is provided. The method involves sensing a pressure in a fluid upstream or downstream of a pump chamber and adjusting a planned peritoneal dialysis treatment based on the sensed pressure to avoid an alarm condition. An intra-peritoneal pressure may be sensed and may be related to a head height of a peritoneal dialysis patient relative to a pump actuation. The fill volume to the peritoneal dialysis patient may also be limited due to the sensed pressure.

Claims

1. A method of performing peritoneal dialysis comprising:

actuating a first pump chamber and a second pump chamber;

sensing a pressure of a fluid in a conduit upstream or downstream from one of the first or second pump chambers; and

adjusting a planned peritoneal dialysis treatment based on the sensed pressure to avoid an alarm condition and performing the adjusted peritoneal dialysis treatment.

2. The method of claim 1, wherein sensing the pressure includes sensing the fluid flowing in the conduit directly.

3. The method of claim 1, which includes sensing a second pressure of the fluid in a second conduit upstream or downstream from the other of the first and second pump chambers.

4. The method of claim 3, wherein sensing the second pressure includes sensing the fluid flowing in the second conduit directly.

5. The method of claim 1, which includes actuating at least one of the first or second pump chambers in two directions.

6. The method of claim 1, wherein sensing the pressure includes sensing an intra-peritoneal pressure (“

IPP”

).

7. The method of claim 6, which includes relating the IPP to a head height of the patient relative to the pump actuation.

8. The method of claim 1, wherein the adjusting includes limiting a fill volume to the patient.

9. A method of performing peritoneal dialysis comprising:

operating a first pump chamber and a second pump chamber;

sensing a first pressure of a fluid in a first conduit upstream or downstream from the first pump chamber and a second pressure of the fluid in a second conduit upstream or downstream from the second pump chamber; and

adjusting a planned peritoneal dialysis treatment based on at least one of the first or second sensed pressures to avoid an alarm condition.

10. The method of claim 9, wherein operating at least one of the first and second pump chambers includes flexing a diaphragm.

11. The method of claim 9, wherein operating the first and second pump chambers includes sequencing at least one valve associated with at least one of the first and second pump chambers.

12. The method of claim 9, which includes operating at least one of the first and second pump chambers in two directions.

13. The method of claim 9, which includes causing the first conduit fluid to flow to a patient and the second conduit fluid to flow from the patient.

14. The method of claim 9, wherein the alarm condition occurs when a pressure of fluid inside a patient exceeds a pressure limit.

15. The method of claim 14, wherein at least one of the first and second pressures is measured directly at the respective first and second conduit.

16. A method of performing peritoneal dialysis comprising:

providing a dialysis fluid cassette with a diaphragm operated pump chamber;

applying a positive and a negative pressure to the diaphragm operated pump chamber;

sensing a pressure in a fluid entering or leaving the pump chamber; and

adjusting a planned peritoneal dialysis treatment based on the sensed pressure to ensure that a pressure of fluid inside a patient does not exceed a pressure limit.

17. The method of claim 16, wherein adjusting the planned peritoneal dialysis treatment includes limiting a fill volume to the patient.

18. The method of claim 16, further comprising allowing the pump chamber to pump fluid to the patient until the pressure limit is reached.

19. The method of claim 16, further comprising relating the pressure of fluid inside the patient to a head height of the patient relative to the pump chamber.

20. The method of claim 16, wherein sensing the pressure includes sensing the pressure multiple times over a fill phase of the peritoneal dialysis treatment.