Patient hydration system with taper down feature

• US 20080221512A1
• Filed: 05/20/2008
• Published: 09/11/2008
• 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: Halpert, Andrew V., Luppi, Kenneth John, Da Silva, J. Ricardo, Rudko, Robert I., Gronek, Wieslaw, Tauscher, Mark
• Granted Patent: US 7,727,222 B2
• Time in Patent Office: Days
• US Class Current: 604/65
• CPC Class Codes: A61B 5/20 for measuring urological functions restricted to the evaluation of the urinary system A61B5/4375 takes precedence
• 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 with an infusion subsystem which infuses fluid into a patient and a urine output measurement subsystem for measuring the amount of urine output by the patient. A controller is configured to control the infusion subsystem and is responsive to the urine output measurement subsystem. The controller includes a balancing function which controls the infusion subsystem to administer fluid infused into the patient to balance the urine output with the fluid infusion. The controller also includes a taper down function which controls the infusion subsystem to administer fluid infused into the patient at a rate less than the rate of urine output by the patient.

Claims

1. A patient hydration system comprising:

an infusion subsystem which infuses fluid into a patient;

a urine output measurement subsystem for measuring the amount of urine output by the patient; and

a controller configured to control the infusion subsystem and responsive to the urine output measurement subsystem and including a balancing function which controls the infusion subsystem to administer fluid infused into the patient to balance the urine output with the fluid infusion, the controller further including a taper down function which controls the infusion subsystem to administer fluid infused into the patient at a rate less than the rate of urine output by the patient.

2. The patient hydration system of claim 1 in which the controller is programmed to determine the amount of fluid infused and the amount of urine output.

3. The patient hydration system of claim 2 in which the controller is programmed to determine the amount of fluid infused and the amount of urine output by weight.

4. The patient hydration system of claim 2 in which the controller is further programmed to calculate the amount of fluid infused over a time interval and to calculate the amount of urine output over a time interval.

5. The patient hydration system of claim 1 in which the taper down function is configured to balance the fluid infused with the urine output over a first time interval and to infuse sequentially lesser percentages of the urine output over subsequent time intervals.

6. The system of claim 1 in which the urine output measurement subsystem includes a urine collection chamber connected to the patient.

7. The system of claim 6 in which the urine output measurement subsystem further includes a weighing mechanism for weighing the urine reservoir.

8. The system of claim 1 in which the controller is configured, based on a setting, to administer hydration fluid at a rate equal to, less than, or greater than the rate of urine output by the patient.

9. The system of claim 1 in which the infusion subsystem includes a pump activated by the controller.

10. A patient hydration 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 fluid;

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

an infusion pump associated with the console and configured to pump fluid from the source of fluid to the patient; and

a controller 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 and including a taper down function which controls the infusion pump to administer fluid infused into the patient at a rate less than the rate of urine output by the patient.

11. A patient hydration system comprising:

an infusion subsystem which infuses fluid into a patient;

a urine output measurement subsystem for measuring the amount of urine output by the patient; and

a controller configured to control the infusion subsystem and responsive to the urine output measurement system including a taper down function which controls the infusion subsystem to administer fluid infused into the patient at a rate less than the rate of urine output by the patient.

12. The patient hydration system of claim 11 in which the controller further includes a balancing function which controls the infusion subsystem to administer fluid infused into the patient to balance the urine output with the fluid infusion.

13. A method of hydrating a patient, the method comprising:

infusing fluid into a patient via a fluid infusion subsystem;

measuring the rate of urine output by the patient; and

automatically controlling the fluid infusion subsystem to administer fluid infused into the patient at a rate less than the rate of urine output from the patient.

14. A method of hydrating a patient, the method comprising:

infusing fluid into a patient via a fluid infusing subsystem;

measuring the rate of urine output by the patient; and

controlling the fluid infusion subsystem to administer fluid infused into a patient at a rate which balances the rate of urine output from the patient and then controlling the fluid infusion subsystem to administer fluid infused into the patient at a rate less than the rate of urine output from the patient.