Systems and methods for fluid delivery

Patent metadata

Field	Value
Publication number	US-9867930-B2
Application number	US-201414336530-A
Country	US
Kind code	B2
Filing date	Jul 21, 2014
Priority date	Sep 15, 2008
Publication date	Jan 16, 2018
Grant date	Jan 16, 2018

Abstract

A system for at least partial closed-loop control of a medical condition is disclosed. The system includes at least one medical fluid pump. The medical fluid pump including a sensor for determining the volume of fluid pumped by the pump. Also, at least one continuous analyte monitor, and a controller. The controller is in communication with the medical fluid pump and the at least one continuous analyte monitor. The controller includes a processor. The processor includes instructions for delivery of medical fluid based at least on data received from the at least one continuous analyte monitor.

First claim

What is claimed is:

1. A system for at least partial closed-loop control of a medical condition, the system comprising:
a medical fluid infusion pump comprising an acoustic volume sensor for measuring the volume of medical fluid pumped to a patient by the medical fluid infusion pump;
at least a first continuous glucose sensor and a second continuous glucose sensor; and
a controller in communication with at least two continuous glucose monitors, the controller comprising a processor,
wherein the first continuous glucose sensor and the second continuous glucose sensor send electrical signals to the processor in the controller and the processor in the controller correlates the electrical signals to a glucose value, and
wherein if a glucose value from the first continuous glucose sensor differs by greater than a predetermined threshold amount from a glucose value from the second continuous glucose sensor, then the glucose value from the first continuous glucose sensor and the glucose value from the second continuous glucose sensor are disregarded.

2. The system of claim 1 , wherein the first continuous glucose sensor is calibrated differently from the second continuous glucose sensor.

3. The system of claim 1 , wherein if the processor does not receive an electrical signal from either the first continuous glucose sensor or the second continuous glucose sensor, the processor disregards future electrical signals from that continuous glucose sensor.

4. The system of claim 1 , wherein the first continuous glucose sensor and the second continuous glucose sensor are tuned to different dynamic ranges.

5. The system of claim 1 , wherein the first continuous glucose sensor is tuned wherein it is sensitive to low blood glucose levels.

6. The system of claim 5 , wherein the second continuous glucose sensor is tuned wherein it is sensitive to high blood glucose levels.

7. The system of claim 1 , wherein the first continuous glucose sensor and the second continuous glucose sensor are tuned based on a time constant.

8. The system of claim 1 , wherein the first continuous glucose sensor and the second continuous glucose sensor are introduced to different depths in a patient.

9. The system of claim 1 , further comprising an inertial measurement unit.

10. The system of claim 1 , further comprising a heart rate sensor.

11. A method for at least partial closed-loop control of a medical condition, the method comprising:
providing a medical fluid infusion pump comprising an acoustic volume sensor for measuring the volume of medical fluid pumped to a patient by the medical fluid infusion pump;
providing at least a first continuous glucose sensor and a second continuous glucose sensor;
providing a controller in communication with at least two continuous glucose monitors, the controller comprising a processor;
the first continuous glucose sensor and the second continuous glucose sensor sending electrical signals to the processor in the controller and the processor in the controller correlating the electrical signals to a glucose value, and
if a glucose value from the first continuous glucose sensor differs by greater than a predetermined threshold amount from a glucose value from the second continuous glucose sensor, then disregarding the glucose value from the first continuous glucose sensor and the glucose value from the second continuous glucose sensor.

12. The method of claim 11 , further comprising calibrating the first continuous glucose sensor differently from the second continuous glucose sensor.

13. The method of claim 11 , further comprising if the processor does not receive an electrical signal from either the first continuous glucose sensor or the second continuous glucose sensor, the disregarding future electrical signals from that continuous glucose sensor.

14. The method of claim 11 , further comprising tuning the first continuous glucose sensor and the second continuous glucose sensor to different dynamic ranges.

15. The method of claim 11 , further comprising tuning the first continuous glucose sensor to be sensitive to low blood glucose levels.

16. The method of claim 15 , further comprising tuning the second continuous glucose sensor to be sensitive to high blood glucose levels.

17. The method of claim 11 , further comprising tuning the first continuous glucose sensor and the second continuous glucose sensor based on a time constant.

18. The method of claim 11 , further comprising introducing the first continuous glucose sensor and the second continuous glucose sensor are to different depths in a patient.

19. The method of claim 11 , further comprising providing an inertial measurement unit.

20. The method of claim 11 , further comprising providing a heart rate sensor.

Assignees

• Deka Products Lp

Inventors

• Kamen Dean
• Kerwin John M
• Gray Larry B
• Mandro Marc A
• Blumberg Jr David

Classifications

• A61M2205/50

  with microprocessors or computers · CPC title

• A61M2205/332

  Force measuring means · CPC title

• A61M5/16809

  by repeated filling and emptying of an intermediate volume (pressure infusion using positive displacement pumps A61M5/142) · CPC title

• G05D7/0676

  by action on flow sources (G05D7/0688, G05D7/0694 take precedence) · CPC title

• A61M5/142

  Pressure infusion, e.g. using pumps · CPC title