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US-20260124363-A1 - INFUSION SYSTEM AND PUMP WITH CONFIGURABLE CLOSED LOOP DELIVERY RATE CATCH-UP

US20260124363A1US 20260124363 A1US20260124363 A1US 20260124363A1US-20260124363-A1

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.

Inventors

  • Steve Joseph Lindo
  • William Kenneth Day

Assignees

  • ICU MEDICAL, INC.

Dates

Publication Date
20260507
Application Date
20251106

Claims (20)

  1. 1 . - 16 . (canceled)
  2. 17 . An infusion system comprising one or more hardware processors configured to: receive a desired infusion rate; calculate an expected accumulated infusion volume as a function of time from the desired infusion rate; activate delivery of an infusion at the desired infusion rate; determine an actual accumulated infusion volume at a particular time; generate a catch-up infusion rate using the desired infusion rate and a catch-up rate based on a comparison of the actual accumulated infusion volume and the expected accumulated infusion volume; and change delivery of the infusion at the catch-up infusion rate.
  3. 18 . The infusion system of claim 17 , wherein the one or more hardware processors are further configured to request an 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.
  4. 19 . The infusion system of claim 17 , wherein the desired infusion rate is receiving from a drug library.
  5. 20 . The infusion system of claim 17 , wherein the one or more hardware processors are further configured to disable delivery at the catch-up infusion rate based on information received from a drug library.
  6. 21 . The infusion system of claim 17 , wherein the one or more hardware processors are further configured to disable delivery at the catch-up infusion rate
  7. 22 . The infusion system of claim 17 , wherein the one or more hardware processors are further configured to receive input of an Allow Rate Catch-up flag setting from a user at the infusion.
  8. 23 . The infusion system of claim 17 , wherein the one or more hardware processors are further configured to receive input of a maximum permissible catch-up rate.
  9. 24 . The infusion system of claim 17 , wherein the generation of the catch-up infusion rate does not rely on physiological factors of a patient.
  10. 25 . The infusion system of claim 17 , wherein the delivery of the infusion is changed to the catch-up infusion rate based on a location of an infusion pump.
  11. 26 . The infusion system of claim 17 , wherein the one or more hardware processors are configured to generate an alarm and request user input before changing the delivery of the infusion at the catch-up infusion rate.
  12. 27 . An infusion method comprising: receiving a desired infusion rate; calculating an expected accumulated infusion volume as a function of time from the desired infusion rate; activating delivery of an infusion at the desired infusion rate; determining an actual accumulated infusion volume at a particular time; generating a catch-up infusion rate using the desired infusion rate and a catch-up rate based on a comparison of the actual accumulated infusion volume and the expected accumulated infusion volume; and changing delivery of the infusion at the catch-up infusion rate.
  13. 28 . The infusion method of claim 27 , further comprising delivering 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.
  14. 29 . The infusion method of claim 27 , wherein the desired infusion rate is receiving from a drug library.
  15. 30 . The infusion method of claim 27 , further comprising disabling delivery at the catch-up infusion rate based on information received from a drug library.
  16. 31 . The infusion method of claim 27 , further comprising disabling delivery at the catch-up infusion rate based on a location in a hospital.
  17. 32 . The infusion method of claim 27 , further comprising receiving an input of an Allow Rate Catch-up flag setting from a user at the infusion.
  18. 33 . The infusion method of claim 27 , further comprising receiving an input of a maximum permissible catch-up rate.
  19. 34 . The infusion method of claim 27 , wherein the generation of the catch-up infusion rate does not rely on physiological factors of a patient.
  20. 35 . The infusion method of claim 27 , wherein the delivery of the infusion is changed to the catch-up infusion rate based on a location of an infusion pump.

Description

TECHNICAL FIELD The present invention relates to medical devices. More specifically, the invention relates to infusion systems and pumps with configurable closed loop delivery rate catch-up. BACKGROUND OF THE INVENTION Description of the Related Art Infusion pumps are medical devices that deliver fluids, including nutrients and medications such as antibiotics, chemotherapy drugs, and pain relievers, into a patient's body in controlled amounts. Many types of pumps, including large volume, patient-controlled analgesia (PCA), elastomeric, syringe, enteral, and insulin pumps, are used worldwide in healthcare facilities such as hospitals, and in the home. Clinicians and patients rely on pumps for safe and accurate administration of fluids and medications. Presently available infusion pumps use an open loop pumping rate: the desired pumping or volumetric flow rate is input directly, or calculated from an input volume to be infused and delivery period or duration, and the infusion pump operates at a single target motor speed or stroke frequency to deliver the desired pumping or flow rate regardless of external conditions. Unfortunately, flow delivery can be interrupted by a variety of conditions, such as a stoppage or pause based upon a full or partial occlusion, a kinked tube, an air-in-line alarm, hanging a new IV bag, vein clot, or the like. Once the flow delivery is interrupted, the time in which there is no medication delivery is lost, resulting in a delay in desired infusion completion. Nurses typically work in shifts and expect certain medications to be started and/or finished within their shift and plan accordingly. When occlusions, pauses, or other disturbances interrupt or delay medication delivery, this disrupts the nurses'planning for patient care within their respective shifts. In addition, the patients in these scenarios would not receive the medicine required within the allotted time. It would be desirable to have an infusion system and pump with configurable closed loop delivery rate catch-up that would overcome the above disadvantages. SUMMARY OF THE INVENTION One aspect of the present invention provides an infusion system with catch-up of interrupted delivery of an infusion programmable by a user, the infusion system including 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 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 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. Another aspect of the present invention provides an infusion pump with catch-up of interrupted delivery of an infusion programmable by a user, the infusion pump including 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. Yet another aspect of the present invention provides a method of catching-up interrupted delivery of an infusion from an infusion pump, the method including entering a desired infusion rate for the infusion pump; calculating an expected accumulated infusion volume as a function of time from the desired 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;