Arrhythmia display

• US 6,449,504 B1
• Filed: 08/24/1999
• Issued: 09/10/2002
• Est. Priority Date: 08/20/1999
• Status: Expired due to Term

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Conley, Vickie L., Koshiol, Allan T.
• Primary Examiner(s): Jastrzab, Jeffrey R.
• Application Number:
  US09/382,292
• Time in Patent Office: 1,113 Days
• Field of Search: 600/523, 600/509, 600/515, 607/5, 607/14
• US Class Current: 600/523
• CPC Class Codes: A61N 1/37247 User interfaces, e.g. input or presentation means

Abstract

Systems, devices, structures, and methods are provided to present a visual display based on data from an implantable medical device. The display includes a chart showing the frequency of a detected type of arrhythmia over a predetermined period of time.

Claims

1. A display comprising:

a first graph to show a frequency of at least one type of ventricular arrhythmia over a predetermined amount of time; and

a second graph to show a frequency of at least one type of atrial arrhythmia over the predetermined amount of time.

2. The display of claim 1, wherein the at least one type of ventricular arrhythmias includes ventricular fibrillation, sustained ventricular tachycardia, and non-sustained ventricular tachycardia.

3. The display of claim 2, wherein the first graph is capable of showing a sustained ventricular tachycardia based upon a detection zone programmatically determined by a user.

4. The display of claim 1, wherein the predetermined amount of time is about five months or greater.

5. The display of claim 1, wherein the display selectively scales the first graph based on the frequency of the at least one type of ventricular arrhythmia over the predetermined amount of time.

6. The display of claim 1, wherein the display selectively scales the second graph based on the frequency of the at least one type of atrial arrhythmia over the predetermined amount of time.

7. The display of claim 1, wherein the first graph is a column graph, wherein the ordinate of the column graph is scaled to the frequency of the at least one type of ventricular arrhythmia over the predetermined amount of time, and wherein the abscissa of the column graph shows a column for each type of ventricular arrhythmia.

8. The display of claim 7, wherein each column showing each type of ventricular arrhythmia is diverse is color.

9. The display of claim 8, wherein color includes gray scale.

10. The display of claim 7, wherein each column showing each type of ventricular arrhythmia is diverse in pattern.

11. The display of claim 7, wherein each column showing each type of ventricular arrhythmia is diverse in pattern and color.

12. The display of claim 11, wherein the color includes gray scale.

13. The display of claim 1, wherein the second graph is a column graph, wherein the ordinate of the column graph is scaled to the frequency of the at least one type of atrial arrhythmia over the predetermined amount of time, and wherein the abscissa of the column graph shows a column for each type of atrial arrhythmia.

14. The display of claim 13, wherein each column showing each type of atrial arrhythmia is diverse is color.

15. The display of claim 14, wherein color includes gray scale.

16. The display of claim 13, wherein each column showing each type of atrial arrhythmia is diverse in pattern.

17. The display of claim 13, wherein each column showing each type of atrial arrhythmia is diverse in pattern and color.

18. The display of claim 17, wherein the color includes gray scale.

19. The display of claim 1, wherein the first graph includes a legend to show the at least one type of ventricular arrhythmia.

20. The display of claim 1, wherein the second graph includes a legend to show the at least one type of ventricular arrhythmia.

21. The display of claim 1, wherein the display is a real-time display.

22. The display of claim 1, wherein at least one graph among the first graph and the second graph is formed from data from an implantable medical device.

23. A method of performing a medical diagnostic, the method comprising:

receiving data stored in an implantable medical device;

viewing a display that includes at least one graph showing the frequency of at least one type of arrhythmia over a predetermined period of time, wherein the at least one graph is formed from the data received from the implantable medical device; and

deriving a diagnostic based at least on the at least one graph.

24. The method of claim 23, wherein viewing the display includes viewing the at least one graph showing the frequency of ventricular arrhythmia, wherein ventricular arrhythmia includes ventricular fibrillation, sustained ventricular tachycardia, and non-sustained ventricular tachycardia.

25. The method of claim 24, wherein viewing the display includes viewing another graph showing the frequency of atrial arrhythmia, wherein atrial arrhythmia includes atria tachycardia.

26. The method of claim 24, wherein viewing the display includes viewing the at least one graph that is capable of showing a sustained ventricular tachycardia based on a detection zone programmatically determined by a user.

27. The method of claim 23, wherein viewing the display includes viewing the at least one graph showing the frequency of the at least one type of arrhythmia over a period of about five months or greater.

28. A method of therapy, the method comprising:

viewing a display that includes at least one graph showing the frequency of at least one type of arrhythmia over a predetermined period of time;

deriving a set of programming variable values based at least on the at least one graph to program an implantable medical device; and

transmitting the set of programming variable values to the implantable medical device so as to apply a therapy when a patient experiences a predetermined type of arrhythmia.

29. The method of claim 28, wherein viewing the display includes viewing the at least one graph showing the frequency of ventricular arrhythmia, wherein ventricular arrhythmia includes ventricular fibrillation, sustained ventricular tachycardia, and non-sustained ventricular tachycardia.

30. The method of claim 29, wherein viewing the display includes viewing another graph showing the frequency of atrial arrhythmia, wherein atrial arrhythmia includes atria tachycardia.

31. The method of claim 29, wherein viewing the display includes viewing the at least one graph that is capable of showing a sustained ventricular tachycardia based on a detection zone programmatically determined by a user.

32. The method of claim 28, wherein viewing the display includes viewing the at least one graph showing the frequency of the at least one type of arrhythmia over a period of about five months or greater.

33. A system comprising:

an implantable medical device that includes;

a controller to control the implantable medical device;

memory coupled to the controller to store at least one occurrence of at least one type of arrhythmia over a predetermined period of time; and

a medical device transmitter coupled to the controller to transmit the at least one occurrence of the at least one type of arrhythmia; and

a programmer that includes;

a processor to control the programmer;

a programmer receiver coupled to the processor to receive the at least one occurrence of the at least one type of arrhythmia; and

a display that includes at least one graph showing the frequency of the at least one occurrence of the at least one type of arrhythmia over the predetermined period of time.

34. The system of claim 33, wherein the at least one graph shows the frequency of ventricular arrhythmia, wherein ventricular arrhythmia includes ventricular fibrillation, sustained ventricular tachycardia, and non-sustained ventricular tachycardia.

35. The system of claim 34, wherein the display includes another graph showing the frequency of atrial arrhythmia, wherein atrial arrhythmia includes atria tachycardia.

36. The system of claim 33, wherein the implantable medical device further comprises a medical device receiver, wherein the programmer further comprises a programmer transmitter, and wherein the programmer is capable of defining at least one detection zone for sustained ventricular tachycardia.

37. The system of claim 36, wherein the programmer transmitter transmits the at least one detection zone to the medical device receiver.

38. The system of claim 34, wherein the at least one graph is capable of showing the sustained ventricular tachycardia based on the at least one detection zone.

39. A data structure to record a frequency of at least one type of arrhythmia so as to allow a presentation of the frequency of the at least one type of arrhythmia, the data structure comprising:

at least one count variable to contain a count of a frequency of the at least one type of arrhythmia; and

a recorded episode data structure to ascertain that the at least one type of arrhythmia is present, wherein once the recorded episode data structure ascertains that the at least one type of arrhythmia is present, the at least one count variable for the at least one type of arrhythmia is incremented.

40. The data structure of claim 39, wherein the data structure further comprises a detected episode data structure to determine that the at least one type of arrhythmia has been detected.

41. The data structure of claim 40, wherein the detected episode data structure further comprises a state to indicate whether the at least one type of arrhythmia has been detected.

42. The data structure of claim 41, wherein the detected episode data structure is object-oriented, wherein the detected episode data structure further comprises an act of monitoring a heart rate to determine if the heart rate reached a predetermined threshold, wherein when the heart rate has reached a predetermined threshold, the state of the detected episode data structure indicates that the at least one type of arrhythmia has been detected.

43. A programmer to program an implantable medical device, the programmer comprising:

a processor to control the programmer;

a programmer receiver coupled to the processor to receive at least one occurrence of at least one type of arrhythmia; and

a display that includes at least one graph showing the frequency of the at least one occurrence of the at least one type of arrhythmia over the predetermined period of time.

45. The method of claim 43, wherein the acts of monitoring, triggering, or recording are iterated over the predetermined period of time before displaying the at least one graph.

44. A method of presenting at least one type of arrhythmia, the method comprising:

monitoring a heart rate over a first predetermined duration;

triggering when the heart rate reaches a predetermined threshold over the first predetermined duration to define a detected arrhythmia episode;

recording when the detected arrhythmia episode is sustained over a second predetermined duration and a therapy is applied; and

displaying at least one graph to show the frequency of the detected arrhythmia episode over a predetermined period of time.