System for grouping and displaying cardiac arrhythmia data

• US 6,301,503 B1
• Filed: 09/29/2000
• Issued: 10/09/2001
• Est. Priority Date: 03/25/1998
• Status: Expired due to Term

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Lang, Douglas J., Hsu, William
• Primary Examiner(s): Kamm, William E.
• Application Number:
  US09/676,318
• Time in Patent Office: 375 Days
• Field of Search: 607/27, 607/30, 600/513
• US Class Current: 607/30
• CPC Class Codes: A61N 1/3702 Physiological parameters A61N1/365 takes precedence; evoked response A61N1/371
• CPC Class Codes: A61N 1/37247 User interfaces, e.g. input or presentation means
• CPC Class Codes: G16H 15/00 ICT specially adapted for medical reports, e.g. generation or transmission thereof
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 50/20 for computer-aided diagnosis, e.g. based on medical expert systems
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass

Abstract

A medical device system and method of plotting symbols representing complexes of selected arrhythmic events on an interactive display screen, for organizing, displaying and interacting with a patient'"'"'s recorded arrhythmia episodes. Stored arrhythmic episode are selected from a plurality of arrhythmic episodes, where the stored arrhythmic episode having a plurality of complexes. A similarity value and a dissimilarity value is calculated for each complex of the plurality of complexes of the selected arrhythmic episode with respect to normal sinus rhythm complexes. Symbols representing the arrhythmic complexes are then plotted as a function of the calculated similarity values and the dissimilarity values on an interactive display screen. Additional information relating to the arrhythmic event is elicited through interacting with the symbols displayed on the interactive display screen.

Claims

1. A system, comprising:

a medical device programmer having programmer electronic circuitry coupled to a display screen, where the medical device programmer is adapted to receive arrhythmic episodes from electronic control circuitry of a cardiac defibrillator, where the arrhythmic episodes each have a plurality of complexes, and where commands directed through the display select one or more of the arrhythmic episodes in response to which the programmer electronic control circuitry measures at least one metric to determine metric values from complexes of the arrhythmic episode and plots at least one symbol representing the complexes of the arrhythmic episode as a function of the metric values on a display screen.

2. The system of claim 1, where the at least one metric is a complex cycle length and the programmer electronic control circuitry is adapted to determine the complex cycle length for the metric values.

3. The system of claim 1, where the at least one metric is a duration of the arrhythmic episode and the programmer electronic control circuitry is adapted to determine the duration of the arrhythmic episode for the metric values.

4. The system of claim 1, where the programmer electronic control circuitry determines the metric values from complexes of the arrhythmic episode from morphology characteristics of each complex and morphology characteristics of normal sinus rhythm complexes.

5. The system of claim 1, where the programmer electronic control circuitry is adapted to calculate a similarity value and a dissimilarity value for the metric value for each complex, and where the programmer electronic control circuitry plots one or more symbols representing the complexes as a function of the calculated similarity values and the dissimilarity values on the display screen.

6. The system of claim 1, where the programmer electronic control circuitry plots one or more symbols as a function of two or more metrics.

7. The system of claim 1, where the programmer electronic control circuitry plots a symbol representative of the arrhythmic episode.

8. The system of claim 1, where the at least one metric is a time and a date the arrhythmic episode occurred and the programmer electronic control circuitry is adapted to record the time and the date the arrhythmic episode occurred for the metric values.

9. The system of claim 1, where the at least one metric is a therapy type and the programmer electronic control circuitry is adapted to record the therapy type delivered to treat the arrhythmic episode for the metric values.

10. The system of claim 1, where the at least one metric is a type of arrhythmic episode and the programmer electronic control circuitry is adapted to record the type of arrhythmic episode for the metric values.

11. The system of claim 1, where the at least one metric is a therapy outcome and the programmer electronic control circuitry is adapted to record the outcome of therapy delivered to treat the arrhythmic episode for the metric values.

12. The system of claim 1, where the at least one metric is an on-set rate and the programmer electronic control circuitry is adapted to record the on-set rate of the arrhythmic episode for the metric values.

13. The system of claim 1, where the at least one metric is a cycle length stability and the programmer electronic control circuitry is adapted to determine the cycle length stability of the arrhythmic episode and to record the cycle length stability of the arrhythmic episode for the metric values.

14. The system of claim 1, where the at least one metric is atrial and ventricular rates and the programmer electronic control circuitry is adapted to determine pre-therapy and post-therapy atrial and ventricular rates for the arrhythmic episode for the metric values.

15. The system of claim 1, where the display screen is adapted to receive commands to display one or more electrocardiogram channels of the selected one or more arrhythmic episodes on the display screen.

16. The system of claim 1, where the programmer electronic circuitry is adapted to display an informational message on the display screen relating to a therapy regimen provided to treat the selected one or more arrhythmic episodes after a symbol representing an arrhythmic episode is selected on the display screen.

17. The system of claim 1, where the symbols representing the selected one or more arrhythmic episodes are grouped together within a defined boundary created on the display screen.

18. The system of claim 17, where the programmer electronic circuitry is adapted to retrievably store one or more defined boundaries as notice boundaries.

19. The system of claim 18, where the programmer electronic circuitry is adapted to retrieve and plot on the display one or more stored notice boundaries, and the programmer electronic circuitry is adapted to display a notice on the display screen when symbols are plotted on the display screen within one or more notice boundaries.