Control of Body Fluid Condition Using Diuretics, Based on Weight Measurement

• US 20090062727A1
• Filed: 08/29/2008
• Published: 03/05/2009
• Est. Priority Date: 09/01/2007
• Status: Active Grant

• Current Assignee: Sang Hoon Woo
• Original Assignee: Sang Hoon Woo
• Inventors: Woo, Sang Hoon
• Granted Patent: US 8,070,742 B2
• Time in Patent Office: Days
• US Class Current: 604/65
• CPC Class Codes: A61M 2202/0496 Urine
• CPC Class Codes: A61M 2205/05 combined with other kinds of therapy
• CPC Class Codes: A61M 2205/3569 sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/14276 specially adapted for implantation
• CPC Class Codes: A61M 5/16827 controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths infusion of multiple fluids without using a controller A61M5/1407
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00

Abstract

The system for controlling body fluids overcomes the limitations of the prior art by automatically infusing diuretic and/or other drugs into a human patient. In one approach, the rate of infusion of the diuretic is adjusted based on the measured weight of the patient. For example, this weight can be transmitted wirelessly to a portable diuretic infusion device attached to the patient.

Claims

1. A method for infusing diuretic to a human patient comprising:

receiving weight information based on body weight measurements performed by the patient to measure his body weight; and

adjusting an infusion rate of diuretic into the patient based on the received weight information according to a predetermined protocol.

2. The method of claim 1 wherein the predetermined protocol specifies an infusion rate to maintain the body weight of the patient at a target weight.

3. The method of claim 1 wherein the predetermined protocol specifies an infusion rate to maintain the body weight of the patient within a target weight range.

4. The method of claim 1 wherein the predetermined protocol specifies an infusion rate that does not exceed an upper limit.

5. The method of claim 1 wherein the predetermined protocol specifies an infusion rate that does not fall below a lower limit.

6. The method of claim 1 wherein the predetermined protocol specifies no infusion of the diuretic if the measured body weight is less than a predetermined weight.

7. The method of claim 1 further comprising:

selecting the predetermined protocol from a set of predetermined protocols.

8. The method of claim 7 wherein the set of predetermined protocols includes a low dose protocol, a moderate dose protocol and a high dose protocol.

9. The method of claim 1 wherein the predetermined protocol specifies an infusion rate that increases monotonically as a function of the difference between the measured body weight and a target body weight.

10. The method of claim 9 wherein the infusion rate is proportional to the weight difference.

11. The method of claim 9 wherein the infusion rate is piecewise constant but monotonically increasing as a function of the weight difference.

12. The method of claim 1 wherein the infusion rate includes a bolus rate.

13. The method of claim 1 wherein the infusion rate includes a basal rate.

14. The method of claim 1 wherein the step of receiving weight information comprises wirelessly receiving the weight information

15. The method of claim 1 wherein the predetermined protocol is further based on a biological parameter other than body weight.

16. The method of claim 1 wherein the predetermined protocol specifies the infusion rate based on body weight measurements taken at two or more different times.

17. The method of claim 1 wherein the predetermined protocol specifies the infusion rate based on an average of body weight measurements taken at two or more different times.

18. The method of claim 1 wherein the predetermined protocol specifies an alarm if the measured body weight exceeds an upper limit.

19. A method for dispensing diuretic to a human patient comprising:

receiving weight information based on body weight measurements performed by the patient to measure his body weight;

calculating an infusion rate of diuretic into the patient based on the received weight information according to a predetermined protocol; and

displaying the calculated infusion rate to the patient.

20. The method of claim 19 further comprising:

transmitting the weight information to the patient'"'"'s healthcare provider.

21. The method of claim 19 further comprising:

recording the weight information.