Patient hydration system with a redundant monitoring of hydration fluid infusion

• US 20060270971A1
• Filed: 04/21/2006
• Published: 11/30/2006
• Est. Priority Date: 09/09/2004
• Status: Active Grant

• Current Assignee: PLC Medical Systems, Inc. (Viveve Medical, Inc.)
• Original Assignee: PLC Medical Systems, Inc. (Viveve Medical, Inc.)
• Inventors: Levin, Howard R., Gelfand, Mark
• Granted Patent: US 7,758,562 B2
• Time in Patent Office: Days
• US Class Current: 604/66
• CPC Class Codes: A61B 5/201 Assessing renal or kidney functions
• CPC Class Codes: A61B 5/208 adapted to determine urine quantity, e.g. flow, volume
• CPC Class Codes: A61B 5/4839 combined with drug delivery
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3355 Controlling downstream pump pressure
• CPC Class Codes: A61M 2205/3393 by weighing the reservoir
• CPC Class Codes: A61M 5/007 for contrast media
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/16895 by monitoring weight change, e.g. of infusion container
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00
• CPC Class Codes: A61M 5/365 Air detectors A61M5/1684 takes precedence; in extracorporeal blood circuits A61M1/3626
• CPC Class Codes: G01G 17/04 for weighing fluids, e.g. gases, pastes

Abstract

A patient hydration system including an infusion device for administering hydration fluid to a patient, and a hydration fluid measurement device responsive to a source of hydration fluid, a patient urine output measurement device. A controller is responsive to the hydration fluid measurement device and the patient urine output measurement device. The controller operates the infusion device, in response to the patient urine output measurement device and the hydration fluid measurement device, to hydrate the patient based on the patient'"'"'s urine output. The controller also monitors the operation history of the infusion device thereby providing redundancy in the measurement of the amount of hydration fluid administered to the patient.

Claims

1. A patient hydration system comprising:

an infusion device for administering hydration fluid to a patient;

a hydration fluid measurement device responsive to a source of hydration fluid;

a patient urine output measurement device; and

a controller, responsive to the hydration fluid measurement device and the patient urine output measurement device, and configured;

to operate the infusion device, in response to the patient urine output measurement device and the hydration fluid measurement device, to hydrate the patient based on the patient'"'"'s urine output, and

to monitor the operation history of the infusion device thereby providing redundancy in the measurement of the amount of hydration fluid administered to the patient.

2. The system of claim 1 in which the controller is configured to output an alarm signal if the operation history of the infusion device yields a hydration fluid administration quantity different from the measurement of the hydration fluid by a first predetermined amount.

3. The system of claim 1 in which the controller is configured to adjust the operation of the infusion device if the operation history of the infusion device yields a hydration fluid administration quantity different from the measurement of the hydration fluid by second predetermined amount.

4. The system of claim 1 in which the controller is further configured to operate the infusion device at a predetermined maximum infusion rate irrespective of the patient'"'"'s urine output.

5. The system of claim 1 in which the controller is further configured to operate the infusion device at a predetermined minimum infusion rate irrespective of the patient'"'"'s urine output.

6. The system of claim 1 in which the infusion device is a pump.

7. The system of claim 1 in which the hydration fluid measurement device includes a weighing mechanism responsive to the source of hydration fluid.

8. The system of claim 7 in which the weighing mechanism includes a first strain gauge.

9. The system of claim 1 in which the patient urine output measurement device includes a weighing mechanism responsive to a reservoir of urine output by the patient.

10. The system of claim 10 in which the patient urine output measurement device weighing mechanism is a second strain gauge.

11. A method of hydrating a patient comprising:

administering hydration fluid to the patient;

measuring the patient'"'"'s urine output; and

controlling the amount of hydration fluid administered to the patient based on the patient'"'"'s urine output and redundantly monitoring the amount of hydration fluid administered to the patient.

12. The method of claim 11 in which the hydration fluid is administered to the patient from a source of hydration fluid by an infusion device, the operation history of the infusion device is monitored, and the source of hydration fluid is monitored to provide redundancy.

13. The method of claim 11 further including outputting an alarm signal if the operation history of the infusion device yields a hydration fluid administration quantity different from the monitored source of hydration fluid by a first predetermined amount.

14. The method of claim 13 further including adjusting the operation of the infusion device if the operation history of the infusion device yields a hydration fluid administration quantity different from the monitored source of hydration fluid by second predetermined amount.

15. The method of claim 11 further including administering hydration fluid at a predetermined maximum infusion rate irrespective the patient'"'"'s urine output.

16. The method of claim 11 further including the step of administering hydration fluid at a predetermined minimum infusion rate irrespective the patient'"'"'s urine output.

17. The method of claim 12 in which monitoring the source of hydration fluid includes weighing the source of hydration fluid.

18. The method of claim 11 in which measuring the patient'"'"'s urine output includes weighing the patient'"'"'s urine output.

19. A fluid management system for a patient injected with a contrast agent, the system comprising:

a console for mounting on an IV pole;

a first attachment mechanism extending from the console for hanging a urine collection chamber;

a first weighing device associated with the console and responsive to the first attachment;

a second attachment extending from the console for hanging a source of hydration fluid;

a second weighing device associated with the console and responsive to the second attachment for weighing the source of hydration fluid;

an infusion pump integrated with the console and configured to pump hydration fluid from the source of hydration fluid into the patient; and

a controller in the console, responsive to the first and second weighing devices, and configured to;

control the infusion pump to hydrate the patient based on the patient'"'"'s urine output to prevent radiocontrast nephropathy,

to monitor the amount of hydration fluid administered to the patient based on the weight of the source of hydration fluid, and to monitor the operation of the infusion pump.

20. A fluid management method for a patient injected with a contrast agent, the method comprising:

weighing the patient'"'"'s urine output;

weighing a source of hydration fluid;

infusing hydration fluid from the source of hydration fluid into the patient via an infusion pump;

controlling the infusion rate to hydrate the patient based on the patient'"'"'s urine output to prevent radiocontrast nephropathy;

monitoring the amount of hydration fluid administered to the patient based on the weight of the source of hydration fluid; and

monitoring operation of the infusion pump.