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EP-4735077-A1 - INFUSION PUMP HAVING A BACKUP POWER SYSTEM

EP4735077A1EP 4735077 A1EP4735077 A1EP 4735077A1EP-4735077-A1

Abstract

An infusion pump includes a controller that controls the pump's operating states including an initiation state and a current operating state for an infusion. The infusion pump has a clock that tracks the time of the current operating state of the infusion and a memory in communication with the controller and the clock that stores pump settings. The infusion pump includes a primary power source that provides power to the controller, clock, memory, and other pump components required for pumping during an infusion. The pump also includes a backup power source that provides power to the controller, clock, and memory during interruptions in power from the primary power source.

Inventors

  • SCHMOLK, Hans
  • PAVLOVIC, Michael Robert

Assignees

  • B. Braun Medical Inc.

Dates

Publication Date
20260506
Application Date
20240513

Claims (20)

  1. 1. An infusion pump comprising: a pump configured to deliver an infusion; a clock configured to track time; a memory: a controller in operative communication with the pump, the clock, and the memory that controls operation of the infusion pump, retrieves time from the clock, and stores pump settings in the memory, wherein the pump settings include a duration of the infusion; a primary power source configured to provide power to the pump, the clock, the memory, and the controller during the infusion; and a backup power source configured to provide power to the clock and the memory during an interruption in power from the primary power source to maintain the pump settings.
  2. 2. The infusion pump of claim 1, wherein upon restoration of power from the primary power source, the controller is configured to retrieve a current time from the clock and the pump settings from the memory.
  3. 3. The infusion pump of claim 2, wherein, upon authorization by a user, the controller restarts the pump and continues the infusion using the retrieved pump settings.
  4. 4. The infusion pump of claim 3, wherein the pump settings do not need to be reentered to restart the pump.
  5. 5. The infusion pump of claim 3, wherein the infusion pump’s operation comprises at least an initiation state and a current operating state and wherein the initiation state of the infusion is bypassed when the pump is restarted.
  6. 6. The infusion pump of claim 5, wherein the initiation state is bypassed automatically.
  7. 7. The infusion pump of claim 3, wherein the infusion pump’s operation comprises at least an initiation state and a cunent operating state, the initiation state comprises initial parameters, and the initial parameters include patient information, drug information, infusion information, or a combination thereof.
  8. 8. The infusion pump of claim 1, further comprising: a voltage regulator coupled to the primary power source, the backup power source, and the controller.
  9. 9. The infusion pump of claim 8, wherein the voltage regulator is configured to stabilize an input voltage to the controller.
  10. 10. The infusion pump of claim 1, wherein the backup power source is a rechargeable battery.
  11. 11. A method of operating an infusion pump, the method comprising: providing an infusion using the infusion pump; tracking time with a clock; storing pump settings for the infusion in a memory', the pump settings including a duration of the infusion; detecting interruption in power from a primary' power source for the infusion pump; suspending the infusion upon detecting the interruption in power from the primary power source; and powering the clock and the memory with a backup power source while the infusion is suspended to maintain the pump settings for the infusion.
  12. 12. The method of claim 11, further comprising: retrieving, upon restoration of the power from the primary’ power source, the pump settings from the memory.
  13. 13. The method of claim 12, further comprising: resuming the infusion, upon user authorization, using the retrieved pump settings such that the infusion continues from an operating state of the pump at the time of detecting the interruption in power from the primary power source.
  14. 14. The method of claim 13, wherein the pump settings do not need to be reentered.
  15. 15. The method of claim 13, wherein an initiation state of the infusion is bypassed.
  16. 16. The method of claim 15, wherein the initiation state is bypassed automatically.
  17. 17. The method of claim 15, yvherein the initiation state comprises initial parameters, yvherein the initial parameters include patient information, drug information, infusion information, or a combination thereof.
  18. 18. The method of claim 11, further comprising: stabilizing an input voltage from the primary power source to a controller of the infusion pump.
  19. 19. A non-transitory computer-readable storage medium storing instructions for controlling operation of an infusion pump, wherein the instructions, when executed by a controller, cause the infusion pump to perform operations comprising: providing an infusion using the infusion pump; tracking time with a clock; storing pump settings for the infusion in a memory, the pump settings including a duration of the infusion; detecting interruption in power from a primary power source for the infusion pump; suspending the infusion upon detecting the interruption in power from the primary 7 power source; and powenng the clock and the memory with a backup power source while the infusion is suspended to maintain the pump settings for the infusion.
  20. 20. The non-transitory computer-readable storage medium of claim 19, wherein the instructions cause the infusion pump to perform the further operations of: retrieving, upon restoration of the power from the primary power source, the pump settings from the memory; and resuming the infusion, upon user authorization, using the retrieved pump setrings such that the infusion continues from an operating state of the pump at the time of detecting the intermption in power from the primary' power source.

Description

INFUSION PUMP HAVING A BACKUP POWER SYSTEM CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority to U.S. Application Serial No. 18/216,486 filed on June 29, 2023, the contents of which are incorporated fully herein by reference. FIELD OF THE INVENTION [0002] The present disclosure is related to infusion pumps and, more particularly, to infusion pumps having backup power systems. BACKGROUND [0003] Infusion pumps deliver controlled doses of fluids such as medications, analgesics, and nutrition to patients. Infusion pumps are particularly well suited to delivering controlled doses of fluids over long periods of time, e.g., several hours or days. While many infusion pumps are designed for bedside use, there are ambulatory versions available. Ambulatory infusion pumps allow a patient to move around while the infusion pump is in use. [0004] Syringe pumps and peristaltic pumps are two conventional types of infusion pumps. A syringe pump depresses a cylinder within a syringe to deliver fluid from the syringe to a patient. A peristaltic pump acts on a tube to control the rate of fluid flow through the tube from a bottle or bag of fluid to a patient. Precise delivery of fluids are desirable to optimize treatment of a patient as there are many fluids where small variations can be critical. [0005] Infusion pumps are typically powered by an electrical power source. However, an electrical failure may interrupt an infusion. An improperly reinitiated infusion upon restoration of power may result in patient harm. SUMMARY [0006] Examples described herein are directed to infusion methods and infusion pumps for delivering fluids to a patient. In sample configurations, an infusion pump is described that includes a pump configured to deliver an infusion, a clock configured to track time, a memory, and a controller. The controller is in operative communication with the pump, the clock, and the memory and is configured to control the infusion pump’s operation, retrieve time from the clock, and store pump settings (including a duration of the infusion) in the memory. The infusion pump additionally includes a primary power source configured to provide power to the pump, the clock, the memory', and the controller during the infusion and a backup power source configured to provide power to the clock and the memory during an interruption in power from the primary power source to maintain the pump settings. [0007] A method of operating an infusion pump is also described. The method includes providing an infusion using the infusion pump, tracking time with a clock, storing pump settings for the infusion in a memory, the pump settings including a duration of the infusion, detecting interruption in power from a primary power source for the infusion pump, suspending the infusion upon detecting the interruption in power from the primary power source, and powering the clock and the memory with a backup power source while the infusion is suspended to maintain the pump settings for the infusion. [0008] A non-transitory controller-readable storage medium storing controller-executable instructions that controls the operation of an infusion pump is also described. The medium stores instructions that when executed by the infusion pump’s controller causes the infusion pump described herein to perform operations that include providing an infusion using the infusion pump, tracking time with a clock, storing pump settings for the infusion in a memory, the pump settings including a duration of the infusion, detecting interruption in power from a primary power source for the infusion pump, suspending the infusion upon detecting the interruption in power from the primary power source, and powering the clock and the memory with a backup power source while the infusion is suspended to maintain the pump settings for the infusion. BRIEF DESCRIPTION OF THE DRAWINGS [0009] The drawing figures depict multiple views of one or more implementations, by way of example only, not by way of limitations. In the figures, like reference numerals refer to the same or similar elements. The same numeral is used to represent the same or similar element across the multiple views. If multiple elements of the same or similar type are present, a letter may be used to distinguish between the multiple elements. When the multiple elements are referred to collectively or a non-specific one of the multiple elements is being referenced, the letter designation may be dropped. [0010] FIG. 1 is a perspective view of an example ambulatory peristaltic infusion pump. [0011] FIG. 2 is a perspective view of an example cassette with a free flow prevention clamp for use with the ambulatory peristaltic infusion pump of FIG. 1. [0012] FIG. 3 is a partial perspective view of the ambulatory peristaltic infusion pump of FIG. 1 illustrating cams that engage the free flow prevention clamp when the cassette is coupled to the ambulatory peristaltic infusion pump. [0013] FIGS.