INFUSION PUMP INCLUDING PAIN CONTROLLED ANALGESIC ("PCA") APPARATUS

• US 20130123745A1
• Filed: 01/04/2013
• Published: 05/16/2013
• Est. Priority Date: 04/02/2008
• Status: Active Grant

• Current Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Original Assignee: Baxter Healthcare SA (Baxter International Inc.), Baxter International Inc.
• Inventors: Simmons, Mark Randal
• Granted Patent: US 9,132,232 B2
• Time in Patent Office: Days
• US Class Current: 604/503
• CPC Class Codes: A61M 2005/1405 Patient controlled analgesia [PCA]
• CPC Class Codes: A61M 2202/0241 Anaesthetics; Analgesics
• CPC Class Codes: A61M 2205/17 with redundant control systems
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/35 Communication
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 2209/01 Remote controllers for specific apparatus
• CPC Class Codes: A61M 5/1456 with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
• CPC Class Codes: A61M 5/16831 Monitoring, detecting, signalling or eliminating infusion flow anomalies low-level float-valves causing cut-off A61M5/40; indicating or recording presence, absence or direction of flow in general G01P13/0066
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00
• CPC Class Codes: G16H 20/17 delivered via infusion or injection

Abstract

An infusion pump includes: a housing, a pump actuator supported by the housing, electronics configured to control the pump actuator, a pain controlled analgesic (“PCA”) input device, a cord having a remote end connected to the PCA input device and a local end connected to the housing, a remote integrated circuit; and a local integrated circuit in communication with the electronics and the remote integrated circuit so as to provide operational information concerning the PCA input device to the electronics.

Claims

1. An infusion pump method comprising:

providing a pain controlled analgesic device having a remote controller;

operably coupling an infusion pump actuator to a local controller;

attempting to send an electrical signal from one of the local controller and the remote controller to the other of the local controller and the remote controller;

attempting to receive the sent electrical signal at the other of the local controller and the remote controller; and

if the other of the local controller and remote controller does not receive the sent electrical signal, sending an output that is indicative of a frayed cord or an open circuit condition between the remote controller and the local controller.

2. The infusion pump method of claim 1, which includes attempting to send the electrical signal from the local controller to the remote controller.

3. The infusion pump method of claim 1, which includes periodically attempting to send the electrical signal from the local controller or the remote controller.

4. The infusion pump method of claim 1, which includes if the other of the local and the remote controller receives the sent electrical signal, waiting a predetermined amount of time and repeating the attempting and output sending steps.

5. The infusion pump method of claim 1, which includes issuing an alert in response to the output indicative of the frayed cord or the open circuit condition.

6. The infusion pump method of claim 1, which includes indicating (i) audibly, (ii) visually, or (iii) audibly/visually that a cord enclosing an electrical connection between the remote and local controllers is frayed in response to the sent output.

7. The infusion pump method of claim 1, which includes automatically providing a bolus to a patient if a stored amount of time has elapsed since a previous bolus provided to the patient.

8. The infusion pump method of claim 1, which includes sending the output indicative of the frayed cord or the open circuit from the local controller.

9. An infusion pump method comprising:

enabling a pain controlled analgesic input device associated with an infusion pump to be depressed;

sensing the depressed pain controlled analgesic input device;

determining an amount of time that the depressed pain controlled analgesic input device has been sensed; and

if the determined amount of time is a value greater than a predetermined value, providing an output indicative of the pain controlled analgesic input device being stuck.

10. The infusion pump method of claim 9, which includes (i) audibly (ii) visually, or (iii) audibly/visually indicating that the pain controlled analgesic input device is stuck in response to the output provided to the infusion pump.

11. The infusion pump method of claim 9, which includes providing the output to a location remote from the infusion pump.

12. The infusion pump method of claim 9, which includes sending a bolus request output to the infusion pump if the determined amount of time is a value less than the predetermined amount.

13. An infusion pump method comprising:

maintaining a depression of a pain controlled analgesic input device;

sending an electrical signal in response to the maintained depression of the pain controlled analgesic input device;

sensing the sent electrical signal; and

determining whether the sensed electrical signal is discontinuous; and

if the sensed electrical signal is determined to be discontinuous, sending an output indicative of the pain controlled analgesic input device functioning improperly.

14. The infusion pump method of claim 13, wherein the output is a chattering contact alert output.

15. The infusion pump method of claim 13, which includes sending the output to an infusion pump.

16. An infusion pump method comprising:

receiving an electrical signal at a local controller that is assumed to be a bolus request signal;

in response to the received electrical signal, sending from the local controller to a remote controller a confirm bolus request electrical signal to verify that the received electrical signal is a bolus request signal;

waiting for the remote controller to respond to the confirm bolus request electrical signal; and

if the remote controller does not respond to the confirm bolus request electrical signal, sending an output that is indicative of a short circuit condition between the remote controller and the local controller.

17. The infusion pump method of claim 16, which includes (i) audibly, (ii) visually, or (ii) audibly/visually indicating that a short circuit condition exists between the remote controller and the local controller in response to receipt of the sent output.

18. The infusion pump method of claim 16, which includes, if the remote controller responds to the confirm bolus request electrical signal, providing a bolus output signal to an infusion pump.

19. The infusion pump of claim 16, which includes communicating the remote controller with the local controller via a protocol selected from the group consisting of:

Inter-Integrated Circuit (“

I.sup.2C”

), Serial Peripheral Interface Bus (“

SPI”

), Transistor-Transistor Logic Universal Asynchronous Receiver/Transmitter (“

TTL UART”

);

RS 232 Universal Asynchronous Receiver/Transmitter (“

RS232 UART”

), and fiber optics.

20. The infusion pump method of claim 16, which includes sending the output to a location remote from an infusion pump.