System and method for verifying connection of correct fluid supply to an infusion pump

• US 7,356,382 B2
• Filed: 08/14/2006
• Issued: 04/08/2008
• Est. Priority Date: 11/14/2003
• Status: Active Grant

• Current Assignee: Carefusion 303 Incorporated (Becton, Dickinson & Co)
• Original Assignee: Cardinal Health 303 Incorporated (Cardinal Health, Inc.)
• Inventors: Vanderveen, Timothy W.
• Primary Examiner(s): KOSOWSKI, ALEXANDER J
• Application Number:
  US11/503,799
• Publication Number:
  US 20060276936A1
• Time in Patent Office: 603 Days
• Field of Search: 700/282, 604 65- 67, 604/80, 604/81, 604/410, 210/85
• US Class Current: 700/282
• CPC Class Codes: A61M 2205/14 Detection of the presence or absence of a tube, a connector or a container in an apparatus
• CPC Class Codes: A61M 2205/3351 Controlling upstream pump pressure
• CPC Class Codes: A61M 5/14228 with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
• 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 5/16854 by monitoring line pressure
• CPC Class Codes: G05D 7/0629 characterised by the type of regulator means
• CPC Class Codes: G16H 20/17 delivered via infusion or injection
• CPC Class Codes: G16H 40/63 for local operation

Abstract

A system and method for verifying that a particular fluid supply is connected to an infusion pump or pump channel. An upstream pressure sensor coupled to a fluid conduit associated with the fluid supply is used to provide pressure signals in response to pressure sensed in the conduit to a processor. In a connection verification mode, the processor is configured to receive the pressure signals and delay the flow control device of the infusion pump from moving fluid through the conduit until the processor detects a pressure change in the conduit indicated by the pressure signals to thereby verify that the particular fluid supply is connected to the infusion pump.

Claims

1. A system for verifying that a particular fluid supply containing a fluid is connected to a flow control device, wherein a tube is connected to the fluid supply, the tube having an inner surface for carrying the fluid and an outer surface and the flow control device acts on a tube coupled to the fluid supply to control movement of the fluid from the fluid supply through the conduit, the system comprising:

a pressure sensor coupled to the outer surface of the tube, the pressure sensor providing pressure signals representative of pressure in the tube; and

a processor having a connection verification mode in which the processor is configured to monitor the pressure signals for a predetermined time period to detect an operator-induced pressure change and to provide a verification indication when the processor receives pressure signals indicative of the operator-induced pressure change in the conduit to thereby verify that the particular fluid supply is connected to the flow control device;

wherein the processor in the connection verification mode is further configured to;

prompt the operator to confirm that a pressure change has been induced if the operator-induced pressure change is not detected within the predetermined time period.

2. The system of claim 1 wherein the processor in the connection verification mode is further configured to provide an alert indication if the operator confirms that the pressure change has been induced but the processor has not detected the operator-induced pressure change indicated by the pressure signals within the predetermined.

3. A patient care system for infusing multiple medical fluids, the patient care system comprising:

a plurality of fluid containers each adapted to hold a separate medical fluid;

a plurality of fluid conduits each in fluid communication with a separate fluid container from among the plurality of fluid containers;

a plurality of pump channels each adapted to receive and connect to a separate fluid conduit from among the plurality of fluid conduits and to operate on the received conduit to pump the fluid from the fluid container connected to the received conduit;

a plurality of pressure sensors each associated with a pump channel, each coupled to a separate fluid conduit from among the plurality of fluid conduits, and each located upstream of the associated pump channel providing the sensor signals representative of pressure in the fluid conduit with which the pressure sensor is coupled; and

a processor connected to the plurality of pressure sensors and to the plurality of pump channels, the processor configured to verify that a particular fluid container from among the plurality of fluid containers is connected to a particular pump channel from among the plurality of pump channels;

wherein the processor has a connection verification mode in which the processor is configured to monitor the pressure signals for a predetermined time period to detect an operator-induced pressure change and to provide a verification indication when the processor receives pressure signals indicative of the operator-induced pressure change in a particular conduit to thereby verify that the particular fluid container is connected to the particular pump channel through the particular conduit.

4. The patient care system of claim 3 wherein the processor is further configured to delay a pump channel from moving fluid through the respective conduit until the processor receives pressure signals indicative of the operator-induced pressure change in the respective conduit.

5. The patient care system of claim 3 wherein the processor in the connection verification mode is configured to detect that the operator-induced pressure change is at any of the pump channels with which the processor is connected and indicate an identity to the operator of the pump channel at which the operator-induced pressure change was actually detected.

6. The patient care system of claim 3 wherein the processor in the connection verification mode is further configured to:

prompt an operator to induce a pressure change in the particular fluid conduit.

7. The patient care system of claim 3 wherein the processor in the connection verification mode is further configured to:

prompt the operator to confirm that a pressure change has been induced if the operator-induced pressure change is not detected within the predetermined time period.

8. The patient care system of claim 7 wherein the processor in the connection verification mode is further configured to provide an alert indication if the operator confirms that the pressure change has been induced but the processor has not detected the operator-induced pressure change indicated by the pressure signals within the predetermined time period.

9. The patient care system of claim 6 wherein the processor in the connection verification mode is configured to prompt the operator to squeeze the particular fluid supply or the conduit in fluid communication with the particular fluid supply to induce the pressure change.

10. The patient care system of claim 6 wherein the processor in the connection verification mode is configured to prompt the operator to change the height of the particular fluid supply to induce the pressure change.

11. The patient care system of claim 6 wherein the processor in the connection verification mode is configured to prompt the operator to tap the particular fluid supply or the conduit in fluid communication with the particular fluid supply to induce the pressure change.

12. The patient care system of claim 3 wherein the processor further includes an override mode, the processor being configured such that when in the override mode, the processor does not run the verification mode.

13. The patient care system of claim 3 further comprising:

a drug library in which is stored a data base of drugs, wherein the drug data base also includes instructions linked to selected drugs to instruct the processor to run the connection verification mode; and

an input device coupled to the processor by which a selection of a drug from the drug data base is made;

wherein the processor receives the drug selection from the input device, accesses the drug library, and is configured in the connection verification mode in the event that such an instruction is linked to the selected drug.

14. A method for verifying that a particular fluid supply is connected to a pump mechanism wherein the pump mechanism acts on a fluid conduit coupled to the fluid supply to control movement of fluid from the fluid supply through the fluid conduit, the method comprising:

prompting an operator to induce a pressure change in the fluid conduit;

sensing pressure in an upstream portion the fluid conduit located between the fluid supply and pump mechanism and generating pressure signals representative of the pressure in the upstream portion of the fluid conduit;

monitoring the pressure signals for a predetermined period of time;

processing the pressure signals to detect an operator-induced pressure change in the upstream portion of the fluid conduit in response to the step of prompting the operator to induce the pressure change; and

indicating a connection verification that the fluid supply is connected to the pump mechanism when the operator-induced pressure change is detected from processing the pressure signals.

15. The method of claim 14 further comprising delaying the flow control device from moving fluid through the conduit until the pressure change in the fluid conduit is detected.

16. The method of claim 14 further comprising:

detecting the operator-induced pressure change at a second flow control device; and

indicating an identity of the second flow control device.

17. The method of claim 14 further comprising:

comprising prompting the operator to confirm that a pressure change has been induced if the induced pressure change is not detected within the predetermined time period.

18. The method of claim 17 further comprising alerting the operator if the operator confirms that the pressure change has been induced but the processor has not detected a pressure change indicated by the pressure signals within the predetermined time period.

19. The method of claim 14 further comprising prompting the operator to squeeze the fluid supply or the fluid conduit to induce the pressure change in the fluid conduit.

20. The method of claim 14 further comprising prompting the operator to change the height of the fluid supply to induce the pressure change in the fluid conduit.

21. The method of claim 14 further comprising prompting the operator to tap the fluid supply or the fluid conduit to induce the pressure change in the fluid conduit.

22. The method of claim 14 further comprising selectively overriding the processing and indicating steps.

23. The method of claim 14 further comprising:

storing a drug library comprising a data base of drugs, wherein the drug data base also includes instructions linked to selected drugs to run a connection verification method; and

selecting a drug from the drug data base;

accessing the drug library and performing the prompting, sensing, processing and indicating steps in the event that such an instruction is linked to the selected drug.

24. A system for verifying that a particular fluid supply is connected to a flow control device, wherein the flow control device acts on a fluid conduit coupled to the fluid supply to control movement of the fluid from the fluid supply through the conduit, the system comprising:

a pressure sensor coupled to the fluid conduit, the pressure sensor providing pressure signals representative of pressure in the fluid conduit; and

a processor having a connection verification mode in which the processor is configured to monitor the pressure signals for a predetermined time period to detect an operator-induced pressure change, to prompt the operator to confirm that a pressure change has been induced if the operator-induced pressure change is not detected within the predetermined time period, and to provide a verification indication when the processor receives pressure signals indicative of the operator-induced pressure change in the conduit to thereby verify that the particular fluid supply is connected to the flow control device.

25. A patient care system for infusing multiple medical fluids, the patient care system comprising:

a plurality of fluid containers each adapted to hold a separate medical fluid;

a plurality of fluid conduits each in fluid communication with a separate fluid container from among the plurality of fluid containers;

a plurality of pump channels each adapted to connect to a separate fluid conduit from among the plurality of fluid conduits and to operate on the received conduit to control movement of fluid from the fluid container connected to the received conduit;

a plurality of pressure sensors each associated with a pump channel, each coupled to a separate fluid conduit from among the plurality of fluid conduits, and each providing sensor signals representative of pressure in the fluid conduit with which the pressure sensor is coupled; and

a processor connected to the plurality of pressure sensors and to the plurality of pump channels, the processor configured to verify that a particular fluid container from among the plurality of fluid containers is connected to a particular pump channel from among the plurality of pump channels;

wherein the processor has a connection verification mode in which the processor is configured to monitor the pressure signals for a predetermined time period to detect an operator-induced pressure change, to prompt the operator to confirm that a pressure change has been induced if the operator-induced pressure change is not detected within the predetermined time period time, and to provide a verification indication when the processor receives pressure signals indicative of the operator-induced pressure change in a particular conduit to thereby verify that the particular fluid container is connected to the particular pump channel through the particular conduit.

26. A method for verifying that a particular fluid supply is connected to a flow control device, wherein the flow control device acts on a fluid conduit coupled to the fluid supply to control movement of fluid from the fluid supply through the fluid conduit, the fluid supply and fluid conduit forming an upstream fluid supply segment, the method comprising:

prompting an operator to induce a pressure change in the fluid conduit;

sensing pressure in the fluid conduit and generating pressure signals representative of the pressure in the fluid conduit;

monitoring the pressure signals for a predetermined period of time.

processing the pressure signals to detect an operator-induced pressure change in the fluid conduit in response to the step of prompting the operator to induce the pressure change;

alerting the operator if the operator confirms that the pressure change has been induced but the processor has not detected a pressure change indicated by the pressure signals within the predetermined time period; and

indicating a connection verification that the fluid supply is connected to the flow control device when the operator-induced pressure change is detected from processing the pressure signals.