System and method for setting and displaying ventilator alarms

• US 6,305,373 B1
• Filed: 01/04/2000
• Issued: 10/23/2001
• Est. Priority Date: 03/14/1997
• Status: Expired due to Term

• Current Assignee: Nellcor Puritan Bennett Incorporated (Medtronic Plc)
• Original Assignee: Nellcor Puritan Bennett Incorporated (Medtronic Plc)
• Inventors: Teel, H. Clay, Sanborn, Warren G., Wallace, Charles L., Arnett, David, Butterbrodt, Jay, Ferguson, Howard L.
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): MITCHELL, TEENA KAY
• Application Number:
  US09/477,751
• Time in Patent Office: 658 Days
• Field of Search: 128/204.18, 128/204.21, 128/204.23, 128/204.26, 128/205.23, 128/202.22, 600/300, 364/413.02, 364/413.03
• US Class Current: 128/204.21
• CPC Class Codes: A61M 16/0051 with alarm devices
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 2205/13 with means for the detection of operative contact with patient, e.g. lip sensor
• CPC Class Codes: A61M 2205/505 Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 2205/587 Lighting arrangements
• CPC Class Codes: G06F 3/0482 Interaction with lists of selectable items, e.g. menus
• CPC Class Codes: G06F 3/04842 Selection of displayed objects or displayed text elements G06F3/0482 takes precedence
• CPC Class Codes: G06F 9/453 Help systems
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: Y02A 90/10 Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
• CPC Class Codes: Y10S 715/965 for process control and configuration

Abstract

The invention is directed to a ventilation control system for controlling the ventilation of a patient. The ventilation control system utilizes a user-friendly user interface for the display of patient data and ventilator status, as well as for entering values for ventilation settings to be used to control the ventilator and for setting and displaying appropriate alarms settings and patient data.

Claims

1. A patient ventilator system, comprising:

a respirator for ventilating a patient;

a sensor connected to the respirator for detecting an alarm condition;

a processor connected to said sensor for determining a severity of the alarm condition, and for assigning a priority among a plurality of priorities to the alarm condition based upon the determined severity;

memory connected to said processor for storing values of ventilator operating parameters, values of alarm thresholds, each said alarm condition, and said assigned priority; and

a display connected to said processor for displaying each alarm condition in order of greater priority first, and for displaying said ventilator operating parameters, patient data and alarm data.

2. The patient ventilator system of claim 1, further comprising a user input device connected to the processor for selecting values of ventilator operating parameters from among a plurality of values of a plurality of ventilator operating parameters, the processor being responsive to the values selected by the user input device to display on the user input device a plurality of currently active ventilator operating parameters and a graphic representation of a range of values appropriate for each of the displayed operating parameters, the value of the displayed operating parameter being displayed at a location adjacent the graphic representation proportional to its value with respect the range of appropriate values of the operating parameter, and wherein the processor displays an alarm icon on the display adjacent each graphic representation, the alarm icon being located adjacent the graphic representation at a position proportional to the value of the alarm threshold with respect to the range of appropriate values.

3. The patient ventilator system of claim 2, wherein the alarm icon includes a display of the value of the alarm threshold and the location of each alarm icon on the display is stored in a memory.

4. The patient ventilator system of claim 2, wherein the display further comprises touch screen elements, the touch screen elements being responsive to a user'"'"'s touch of a selected one of the alarm icons on the display to provide a signal to the processor, wherein the processor is responsive to signals from the user input device to change the value for the selected alarm threshold, store the changed value of the selected alarm threshold in the memory, and display the changed value on the selected alarm icon.

5. The patient ventilator system of claim 2 further comprising an alarm indicator.

6. The patient ventilator system of claim 5 wherein the alarm indicator further comprises a high urgency indicator, a moderate urgency indicator and a low urgency indicator.

7. The patient ventilator system of claim 2 further comprising alarm condition detectors, the alarm condition detectors providing alarm signals to the processor indicating that an alarm condition is present.

8. The patient ventilator system of claim 7, wherein the processor receives the alarm signals from the alarm condition detectors and determines an urgency level of the alarm condition.

9. The patient ventilator system of claim 8 further comprising an alarm indicator, the alarm indicator including a high urgency indicator, a moderate urgency indicator and a low urgency indicator, and wherein the processor controls the alarm indicator to indicate a high urgency in response to a high urgency level, a moderate urgency in response to a moderate urgency level and a low urgency in response to a low urgency level.

10. A patient ventilator system, comprising:

a respirator for ventilating a patient;

a sensor connected to the respirator for detecting an alarm condition;

a processor connected to said sensor for determining a severity of the alarm condition, and for assigning a priority among a plurality of priorities to the alarm condition based upon the determined severity, said processor being connected to a memory for storing values of ventilator operating parameters and values of alarm thresholds; and

a display connected to the processor for displaying each alarm condition in order of greater priority first, a plurality of currently active ventilator operating parameters and a graphic representation of a range of values appropriate for each of the displayed operating parameters, a measured patient value of each displayed operating parameter, each said measured patient value being displayed at a location adjacent the graphic representation proportional to said measured patient value with respect the range of appropriate values of the operating parameter, and an alarm icon adjacent to each said graphic representation at a position proportional to the value of the alarm threshold with respect to the range of appropriate values.

11. The patient ventilator system of claim 10 further comprising an alarm indicator.

12. The patient ventilator system of claim 11 wherein the alarm indicator further comprises a high urgency indicator, a moderate urgency indicator and a low urgency indicator.

13. The patient ventilator system of claim 10 further comprising alarm condition detectors, the alarm condition detectors providing alarm signals to the processor indicating that an alarm condition is present.

14. The patient ventilator system of claim 13, wherein the processor receives the alarm signals from the alarm condition detectors and determines an urgency level of the alarm condition.

15. The patient ventilator system of claim 14 further comprising an alarm indicator, the alarm indicator including a high urgency indicator, a moderate urgency indicator and a low urgency indicator, and wherein the processor controls alarm indicator to indicate a high urgency in response to the high urgency level, a moderate urgency in response to the moderate urgency level and a low urgency in response to the low urgency level.

16. A patient ventilator system, comprising:

a respirator for ventilating a patient;

a sensor connected to the respirator for detecting an alarm condition;

a processor connected to said sensor for determining a severity of the alarm condition, and for assigning a priority among a plurality of priorities to the alarm condition based upon the determined severity, said processor being connected to a memory for storing values of ventilator operating parameters and values of alarm thresholds; and

a display connected to the processor for displaying each alarm condition in order of greater priority first, a plurality of alarm messages for a corresponding plurality of alarms, each of the plurality of alarm messages comprising abase message identifying a corresponding initial alarm, and an analysis message identifying the root cause of the corresponding initial alarm and identifying any subsequent alarms dependent upon said initial alarm.

17. The patient ventilator system of claim 16, said display further displaying a remedy message for each of said plurality of alarm messages, said remedy message suggesting procedure to be taken to correct a condition giving rise to the corresponding initial alarm.