Patient hydration system and method

• US 7,938,817 B2
• Filed: 09/09/2004
• Issued: 05/10/2011
• 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: Gelfand, Mark, Levin, Howard
• Primary Examiner(s): Stigell; Theodore J
• Assistant Examiner(s): WITCZAK, CATHERINE
• Application Number:
  US10/936,945
• Publication Number:
  US 20060052764A1
• Time in Patent Office: 2,434 Days
• Field of Search: 604 65- 67, 604/30, 604/31, 604/503, 604/506, 604/508, 604/517, 604/245
• US Class Current: 604/503
• 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 and method wherein a urine collection system is connected to the patient. An infusion system is also connected to the patient. An infusion pump is connected to a source of hydration fluid. A control subsystem is responsive to the amount of urine output by the patient and configured to automatically adjust the infusion rate of the infusion pump based on the urine output by the patient.

Claims

1. A method of addressing radiocontrast nephropathy, the method comprising:

administering a diuretic to a patient to induce increased urine flow expelled by the patient;

collecting the urine expelled by the patient;

measuring the collected urine expelled;

setting a desired fluid balance;

automatically infusing the patient with a fluid at a rate which is a function of the measured urine expelled to achieve the set desired fluid balance; and

then injecting the patient with a contrast agent.

2. The method of claim 1 in which automatically infusing includes balancing the fluid infused with the urine expelled.

3. The method of claim 2 in which balancing occurs every 15 minutes or less for the therapy duration.

4. The method of claim 1 in which collecting urine expelled by the patient includes catheterizing the patient.

5. The method of claim 4 in which catheterizing the patient includes inserting a urinary catheter in the urinary tract of the patient.

6. The method of claim 1 in which measuring the urine expelled includes weighing the urine expelled in a urine collection bag and providing an indication when the urine collection bag has reached its capacity.

7. The method of claim 1 in which automatically infusing the patient with a fluid includes providing an indication when a fluid source is low on fluid.

8. A method of addressing radiocontrast nephropathy, the method comprising:

administering a diuretic to a patient to induce increased urine flow expelled by the patient;

collecting the urine expelled by the patient by placing a urinary catheter in the patient;

measuring the collected urine expelled;

placing a hydration I.V. in the patient;

setting a desired fluid balance;

automatically infusing the patient with a fluid at a rate which is a function of the measured urine expelled to achieve the set desired fluid balance; and

then injecting the patient with a contrast agent.

9. A method for a patient undergoing a medical procedure involving a radiocontrast agent to protect a patient from kidney damage, the method comprising:

administering to the patient a diuretic to increase urine production;

placing a urinary catheter in the patient;

placing a hydration I.V. in the patient;

collecting the urine from the patient;

monitoring the volume of the collected urine;

setting a desired fluid balance;

automatically adjusting a rate of I.V. hydration based on the volume of the collected urine to achieve the set desired fluid balance; and

administering to the patient a radiocontrast agent.