INFUSION SYSTEM AND PUMP WITH CONFIGURABLE CLOSED LOOP DELIVERY RATE CATCH-UP

• US 20150343141A1
• Filed: 05/29/2015
• Published: 12/03/2015
• Est. Priority Date: 05/29/2014
• Status: Active Grant

• Current Assignee: ICU Medical Incorporated
• Original Assignee: ICU Medical Incorporated
• Inventors: Lindo, Steve Joseph, Day, William Kenneth
• Granted Patent: US 11,344,673 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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

An infusion system and pump with configurable closed loop delivery rate catch-up including an infusion system having a medication management unit and a medical device. The medication management unit has programming code to: provide a graphical user interface for modifying a drug library; receive a catch-up rate factor; update the drug library with the catch-up rate factor; and transmit the updated drug library to the medical device. The medical device has programming code to: receive the updated drug library; receive a desired infusion rate; calculate expected accumulated infusion volume from the desired infusion rate; request delivery of the infusion at the desired infusion rate; determine actual accumulated infusion volume at a particular time; increase the infusion rate by the catch-up rate factor to generate a catch-up infusion rate when at the particular time the actual accumulated infusion volume is less than expected; and request infusion at the catch-up infusion rate.

Claims

1. An infusion system with catch-up of interrupted delivery of an infusion, the infusion system comprising:

a medication management unit having a processing unit and a storage medium coupled to the processing unit, the storage medium containing programming code executable by the processing unit to;

provide a graphical user interface for modifying a drug library of the medication management unit;

receive a catch-up rate factor on the graphical user interface;

update the drug library with the catch-up rate factor; and

transmit the updated drug library to a memory of an infusion pump; and

the infusion pump being in electronic communication with the medication management unit, having a processor and the memory being coupled to the processor, the memory containing programming code executable by the processor to;

receive the updated drug library at the medical device with the catch-up rate factor;

receive a desired infusion rate at the medical device;

calculate an expected accumulated infusion volume as a function of time from the desired infusion rate;

request delivery of the infusion at the desired infusion rate;

determine an actual accumulated infusion volume at a particular time;

increase the desired infusion rate by the catch-up rate factor to generate a catch-up infusion rate when at the particular time the actual accumulated infusion volume is less than the expected accumulated infusion volume; and

request delivery of the infusion at the catch-up infusion rate.

2. The infusion system of claim 1 wherein the memory further contains programming code to request the infusion pump to deliver the infusion at the desired infusion rate after delivery of the infusion at the catch-up infusion rate when the actual accumulated infusion volume is equal to the expected accumulated infusion volume.

3. The infusion system of claim 1 wherein the drug library further includes an Allow Rate Catch-up flag setting having one of an Enabled setting and a Disabled setting, the Allow Rate Catch-up flag setting being a function of a parameter selected from the group consisting of drug entry, pump type, and clinical care area location.

4. The infusion system of claim 1 wherein the drug library further includes a maximum catch-up rate factor setting having a numerical value, the maximum catch-up rate factor setting being a function of a parameter selected from the group consisting of drug entry, pump type, and clinical care area location.

5. The infusion system of claim 1 wherein the drug library further includes a maximum catch-up rate factor alarm setting having a numerical value, the maximum catch-up rate factor alarm setting being a function of a parameter selected from the group consisting of drug entry, pump type, and clinical care area location.

6. An infusion pump with catch-up of interrupted delivery of an infusion, the infusion pump comprising:

a processor;

a memory coupled to the processor, the memory containing programming code to;

receive a desired infusion rate from the user at the medical device;

calculate an expected accumulated infusion volume as a function of time from the desired infusion rate;

request delivery of the infusion at the desired infusion rate;

determine an actual accumulated infusion volume at a particular time;

increase the desired infusion rate by a catch-up rate factor to generate a catch-up infusion rate when at the particular time the actual accumulated infusion volume is less than the expected accumulated infusion volume; and

request delivery of the infusion at the catch-up infusion rate.

7. The infusion pump of claim 6 wherein the memory further contains programming code to request the infusion pump to deliver the infusion at the desired infusion rate after delivery of the infusion at the catch-up infusion rate when the actual accumulated infusion volume is equal to the expected accumulated infusion volume.

8. The infusion pump of claim 6 wherein the memory further contains programming code to receive input of an Allow Rate Catch-up flag setting from a user at the infusion pump.

9. The infusion pump of claim 6 wherein the memory further contains programming code to receive input of the maximum permissible catch-up rate factor from one of a user at the infusion pump and from a remote computer.

10. A method of catching-up interrupted delivery of an infusion from an infusion pump, the method comprising:

entering a desired infusion rate for the infusion pump;

calculating an expected accumulated infusion volume as a function of time from the infusion rate;

requesting the infusion pump to deliver the infusion at the desired infusion rate;

determining an actual accumulated infusion volume at a particular time;

increasing the desired infusion rate by a catch-up rate factor to generate a catch-up infusion rate when at the particular time the actual accumulated infusion volume is less than the expected accumulated infusion volume; and

requesting the infusion pump to deliver the infusion at the catch-up infusion rate.

11. The method of claim 10 further comprising requesting the infusion pump to deliver the infusion at the desired infusion rate after the increasing when the actual accumulated infusion volume is equal to the expected accumulated infusion volume.

12. The method of claim 10 further comprising a user at the infusion pump inputting an Allow Rate Catch-up flag setting to a Disabled setting to disable the increasing.

13. The method of claim 10 further comprising a user at the infusion pump inputting the catch-up rate factor to a desired value.

14. The method of claim 13 further comprising rejecting the input catch-up rate factor when the desired value is greater than a maximum catch-up rate factor setting.

15. The method of claim 13 further comprising providing an alarm when the desired value is greater than a maximum catch-up rate factor alarm setting.

16. The method of claim 10 wherein the increasing further comprises:

receiving an alarm when at the particular time the actual accumulated infusion volume is less than the expected accumulated infusion volume; and

acknowledging the alarm prior to increasing the desired infusion rate by a catch-up rate factor to generate a catch-up infusion rate.