Pain controlled analgesic (“PCA”) apparatus

• US 7,914,483 B2
• Filed: 04/02/2008
• Issued: 03/29/2011
• 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
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): PATEL, PRITESH ASHOK
• Application Number:
  US12/061,496
• Publication Number:
  US 20090254025A1
• Time in Patent Office: 1,091 Days
• Field of Search: None
• US Class Current: 604/67
• 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 comprising:

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, wherein the local integrated circuit is located within the cord at the local end and the remote integrated circuit is located within the cord at the remote end.

2. The infusion pump of claim 1, wherein the electronics are configured to control the pump actuator includes programmable processing and memory.

3. The infusion pump of claim 1, wherein the PCA input device includes at least one button.

4. The infusion pump of claim 1, wherein the remote integrated circuit is in communication with the local integrated circuit via a protocol selected from the group consisting of:

Inter-Integrated Circuit (“

I²C”

), 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.

5. The infusion pump of claim 1, wherein the operational information concerning the PCA input device includes a request from the remote integrated circuit for a bolus of analgesic.

6. The infusion pump of claim 5, wherein the remote integrated circuit is configured to send the bolus request upon receiving an input from the PCA input device by a patient.

7. The infusion pump of claim 5, wherein one of the (i) local integrated circuit and (ii) the electronics is configured to apply at least one rule to determine if the bolus of analgesic should be delivered.

8. The infusion pump of claim 7, wherein the at least one rule includes whether the bolus request has occurred too soon after a previous bolus of analgesic delivery.

9. The infusion pump of claim 1, wherein the operational information concerning the PCA input device includes whether the remote and local integrated circuits can communicate.

10. The infusion pump of claim 1, wherein the operational information concerning the PCA input device includes whether the PCA input device is functioning properly.

11. The infusion pump of claim 10, wherein the information concerning whether the PCA input device is functioning properly includes at least one of:

(i) information concerning a button of the PCA input device being stuck and (ii) information concerning a switch closure of the PCA input device operating improperly.

12. An infusion pump comprising:

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 first end and a second end, the cord connecting the PCA input device to the housing;

a first integrated circuit; and

a second integrated circuit in communication with the first integrated circuit, at least one of the first and second integrated circuits in communication with the electronics, the first and second integrated circuits configured and arranged with respect to the PCA input device and the housing to detect whether the PCA input device is functioning properly, wherein the first integrated circuit is located within the cord at the first end and the second integrated circuit is located within the cord at the second end.

13. The infusion pump of claim 12, the first integrated circuit associated with the PCA input device, and wherein being configured to detect whether the PCA input device is functioning properly includes being configured to determine if the first integrated circuit can communicate with (i) the electronics or (ii) the second integrated circuit.

14. The infusion pump of claim 12, wherein being configured to detect whether the PCA input device is functioning properly includes being configured to determine if a button of the PCA input device is stuck.

15. The infusion pump of claim 12, wherein being configured to detect whether the PCA input device is functioning properly includes being configured to determine if a switch contact of the PCA input device is functioning properly.

16. An infusion pump comprising:

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 connecting the PCA input device and the housing; and

first and second integrated circuits positioned within the cord and configured to determine at least one of;

(i) integrity of wiring within the cord; and

(ii) integrity of the PCA input device, wherein the first integrated circuit is located within the cord at a first end and the second integrated circuit is located within the cord at a second end.

17. An infusion pump comprising:

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 whether the PCA input device is functioning properly to the electronics, wherein at least one of the local integrated circuit and the remote integrated circuit is located within the cord, and wherein the operational information includes at least one of;

(i) information concerning a button of the PCA input device being stuck and (ii) information concerning a switch closure of the PCA input device operating improperly.

18. The infusion pump of claim 17, wherein the electronics are configured to control the pump actuator includes programmable processing and memory.

19. The infusion pump of claim 17, wherein the remote integrated circuit is located within the cord at the remote end and the local integrated circuit is located within the cord at the local end.

20. The infusion pump of claim 17, wherein the remote integrated circuit is located within the cord at the remote end.

21. The infusion pump of claim 17, wherein the local integrated circuit is located within the cord at the local end.

22. The infusion pump of claim 17, wherein the remote integrated circuit is in communication with the local integrated circuit via a protocol selected from the group consisting of:

Inter-Integrated Circuit (“

I²C”

), 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.

23. The infusion pump of claim 17, wherein the operational information concerning the PCA input device includes a request from the remote integrated circuit for a bolus of analgesic.

24. The infusion pump of claim 23, wherein the remote integrated circuit is configured to send the bolus request upon receiving an input from the PCA input device by a patient.

25. The infusion pump of claim 23, wherein one of the (i) local integrated circuit and (ii) the electronics is configured to apply at least one rule to determine if the bolus of analgesic should be delivered.

26. The infusion pump of claim 25, wherein the at least one rule includes whether the bolus request has occurred too soon after a previous bolus of analgesic delivery.

27. The infusion pump of claim 17, wherein the operational information concerning the PCA input device includes whether the remote and local integrated circuits can communicate.

28. An infusion pump comprising:

a housing;

a pump actuator supported by the housing;

electronics configured to control the pump actuator;

a pain controlled analgesic (“

PCA”

) input device;

a first integrated circuit; and

a second integrated circuit in communication with the first integrated circuit, at least one of the first and second integrated circuits in communication with the electronics, the first and second integrated circuits configured and arranged with respect to the PCA input device and the housing to detect whether the PCA input device is functioning properly and provide operational information concerning the PCA input device to the electronics including at least one of;

(i) information concerning a button of the PCA input device being stuck and (ii) information concerning a switch closure of the PCA input device operating improperly.

29. The infusion pump of claim 28, the first integrated circuit associated with the PCA input device, and wherein being configured to detect whether the PCA input device is functioning properly includes being configured to determine if the first integrated circuit can communicate with (i) the electronics or (ii) the second integrated circuit.

30. The infusion pump of claim 28, wherein being configured to detect whether the PCA input device is functioning properly includes being configured to determine if a switch contact of the PCA input device is functioning properly.

31. The infusion pump of claim 28, which includes a cord connecting the PCA input device to the housing.

32. The infusion pump of claim 31, wherein at least one of:

(i) the first integrated circuit is located in the PCA input device or at a PCA input device end of the cord and (ii) the second integrated circuit is located in the housing or at a housing end of the cord.

33. The infusion pump of claim 31, wherein at least one of the first integrated circuit and the second integrated circuit is located within the cord.

34. An infusion pump comprising:

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 connecting the PCA input device and the housing; and

first and second integrated circuits positioned with respect to the cord and configured to;

determine at least one of;

(i) integrity of wiring within the cord; and

(ii) integrity of the PCA input device, and

provide operational information concerning the PCA input device to the electronics including at least one of;

(i) information concerning a button of the PCA input device being stuck and (ii) information concerning a switch closure of the PCA input device operating improperly.

35. The infusion pump of claim 34, wherein at least one of the first and second integrated circuits is located within the cord.