AUTOMATED PRESSURE LIMIT SETTING METHOD AND APPARATUS

• US 20160030668A1
• Filed: 10/13/2015
• Published: 02/04/2016
• Est. Priority Date: 05/05/2011
• Status: Active Grant

• Current Assignee: Carefusion 303 Incorporated (Becton Dickinson & Co)
• Original Assignee: Carefusion 303 Incorporated (Becton Dickinson & Co)
• Inventors: BARNES, Erik, BUTTERFIELD, Robert Dwaine
• Granted Patent: US 10,188,792 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/16863 Occlusion detection
• CPC Class Codes: A61M 2005/16868 Downstream occlusion sensors
• CPC Class Codes: A61M 2205/3334 Measuring or controlling the flow rate
• CPC Class Codes: A61M 2205/3355 Controlling downstream pump pressure
• CPC Class Codes: A61M 2205/3362 with minimised length of fluid lines; Taking into account the elastic expansion of fluid lines to increase accuracy
• CPC Class Codes: A61M 2205/3372 Temperature compensation
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 2205/52 with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/6054 Magnetic identification systems
• CPC Class Codes: A61M 2205/6072 Bar codes
• CPC Class Codes: A61M 5/00 Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests vaccination appliances for veterinary use A61D1/025 ; tube connectors, tube couplings, valves or branch units specially adapted for medical use A61M39/00; containers specially adapted for medical or pharmaceutical purposes A61J1/00; combinations of vial and syringe for mixing or transferring their contents A61J1/20; holders for containers for collecting, storing or administering blood or medical fluids A61J1/16
• CPC Class Codes: A61M 5/1407 Infusion of two or more substances
• CPC Class Codes: A61M 5/16854 by monitoring line pressure

Abstract

A method of infusing a fluid includes receiving values of one or more infusion parameters for an infusion of a fluid, Based on the received infusion parameter values, an occlusion pressure threshold for the infusion of the fluid is automatically calculated. During the infusion, a fluid pressure value is sensed. An indication is provided responsive to whether a value of the sensed fluid pressure is greater than the occlusion pressure threshold.

Claims

1. A fluid pump, comprising:

a pressure sensor for sensing fluid pressure during an infusion of a fluid;

a display;

a memory; and

a processor coupled with the memory and the display, the processor configured to;

receive an identity of an infusion tubing connector or an infusion vascular access device used for the infusion of the fluid;

receive values of one or more infusion parameters;

calculate, based on the received infusion parameter values, an occlusion pressure threshold for the infusion of the fluid;

receive, during the infusion, a fluid pressure signal from the pressure sensor; and

provide an indication responsive to whether a value of the received fluid pressure signal contravenes the occlusion pressure threshold.

2. The fluid pump of claim 1, wherein the processor is further configured to:

calculate a theoretical working pressure value; and

add a noise margin pressure value to the theoretical working pressure value.

3. The fluid pump of claim 2, wherein the processor is configured to calculate the theoretical working pressure value based on an amount of total flow infusing through a common infusion pathway, a flow resistance value of the common infusion pathway, and flow resistance values of any separate portions of the infusion pathway specific to a given pump.

4. The fluid pump of claim 2, wherein the processor is further configured to:

receive patient identification information.

5. The fluid pump of claim 4, wherein the noise margin pressure value is calculated using the patient identification information.

6. The fluid pump of claim 1, wherein the processor is configured to receive at least one value associated with the received values of the one or more infusion parameters from a database.

7. The fluid pump of claim 1, wherein the processor is configured to receive the values of the one or more infusion parameters over a communication network from a server.

8. The fluid pump of claim 1, wherein the processor is further configured to:

adjust, during the infusion of the fluid, the occlusion pressure threshold responsive to the sensed fluid pressure.

9. The fluid pump of claim 8, wherein the processor is configured to adjust the occlusion pressure threshold responsive to a static operational parameter and a dynamic operational parameter.

10. The fluid pump of claim 9, wherein the static operational parameter comprises patient medical information.

11. The fluid pump of claim 10, wherein the dynamic operational parameter comprises statistical characteristics of the sensed fluid pressure.

12. A patient care system, comprising:

an infusion vascular access device;

an infusion tubing connector; and

a fluid pump fluidly configured to be fluidly coupled to the infusion vascular access device via the infusion tubing connector, the fluid pump comprising;

a pressure sensor for sensing fluid pressure during an infusion of a fluid; and

a processor, wherein the processor is configured to;

receive an identity of the infusion tubing connector or the infusion vascular access device;

receive values of one or more infusion parameters;

calculate, based on the received infusion parameter values, an occlusion pressure threshold for the infusion of the fluid;

receive, during the infusion, a fluid pressure signal from the pressure sensor; and

provide an indication responsive to whether a value of the received fluid pressure signal contravenes the occlusion pressure threshold.

13. The patient care system of claim 12, wherein the fluid pump further comprises a display.

14. The patient care system of claim 13, wherein the processor is configured to operate the display to display a prompt to a user for manual entry of at least one of the values of the one or more infusion parameters.

15. The patient care system of claim 14, wherein the at least one of the values of the one or more infusion parameters comprises a number of channels used for the infusion.

16. The patient care system of claim 14, wherein the at least one of the values of the one or more infusion parameters comprises a configuration of a manifold.

17. The patient care system of claim 16, wherein the at least one of the values of the one or more infusion parameters further comprises a length of a fluid line segment upstream of the manifold.

18. The patient care system of claim 12, further comprising a server communicatively coupled to the fluid pump, wherein the processor is configured to receive at least one of the values of the one or more infusion parameters from the server.

19. The patient care system of claim 18, wherein the fluid pump further comprises an input device, wherein the processor is configured to receive at least an additional one of the values of the one or more infusion parameters from a user via the input device.

20. The patient care system of claim 12, wherein the fluid pump further comprises a memory storing fluid resistance characteristics of the infusion vascular access device and the infusion tubing connector and storing a noise margin pressure to be applied in the calculation of the occlusion pressure threshold.