Organizing data according to cardiac rhythm type

• US 20030199957A1
• Filed: 04/22/2002
• Published: 10/23/2003
• Est. Priority Date: 04/22/2002
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Grandjean, Pierre, Struble, Chester, Muhlenberg, Lambert
• Granted Patent: US 7,058,450 B2
• Time in Patent Office: Days
• US Class Current: 607/122
• CPC Class Codes: A61N 1/3622 comprising two or more electrodes co-operating with different heart regions
• CPC Class Codes: A61N 1/36585 controlled by two or more physical parameters
• CPC Class Codes: A61N 1/3702 Physiological parameters A61N1/365 takes precedence; evoked response A61N1/371

Abstract

A plurality of sensors are disposed in and around the heart of a patient to collect data such as various electrical parameters, pressure parameters and temperature parameters. The data collected via the sensors may be organized and stored according to cardiac rhythm type. The organization of data according to cardiac rhythm type allows the patient'"'"'s physician to be better able to monitor how the various parameters are related to the various cardiac rhythm types. In a typical embodiment, one or more of the sensors may be deployed on a single lead implanted in the heart.

Claims

1. An implantable medical lead comprising:

a first electrode;

a second electrode; and

a pressure sensor.

2. The lead of claim 1, wherein the lead includes a distal end, and wherein the first electrode is positioned at the distal end.

3. The lead of claim 2, wherein the first electrode is a left ventricular electrode and the second electrode is a right ventricular electrode.

4. The lead of claim 1, wherein the first electrode is a left ventricular electrode and the second electrode is a right ventricular electrode, the lead further comprising an atrial electrode.

5. The lead of claim 1, further comprising a defibrillation electrode.

6. The lead of claim 1, further comprising a temperature sensor.

7. The lead of claim 1, further comprising an oxygen sensor.

8. A device comprising:

a monitor that monitors a cardiac parameter;

a processor that classifies a cardiac rhythm type; and

memory that stores the cardiac parameter as a function of the cardiac rhythm type.

9. The device of claim 8, wherein the monitor is a pressure monitor.

10. The device of claim 9, wherein the cardiac parameter is at least one of ventricular systolic pressure, ventricular diastolic pressure, pulse pressure, ventricular mean pressure, estimated pulmonary artery diastolic pressure, a derivative of pressure with respect to time, a systolic time interval and a pre-ejection interval.

11. The device of claim 8, wherein the monitor is a temperature monitor.

12. The device of claim 8, wherein the monitor is an activity monitor.

13. The device of claim 8, wherein the monitor is an oxygen saturation monitor.

14. The device of claim 8, wherein the processor classifies the cardiac rhythm type as at least one of normal sinus rhythm, paced ventricular rhythm, supraventricular tachycardia, premature ventricular contraction, ventricular tachycardia and atrial fibrillation.

15. The device of claim 8, further comprising:

a first electrode disposed in a left ventricle;

a second electrode disposed in a right ventricle; and

a pressure sensor disposed in one of the left ventricle and the right ventricle.

16. The device of claim 15, further comprising a third electrode disposed in a right atrium.

17. The device of claim 8, further comprising:

a first electrode;

a second electrode;

a pressure sensor; and

a single lead, wherein the first electrode, the second electrode and the pressure sensor are deployed on the lead.

18. The device of claim 17, further comprising a third electrode deployed on the lead.

19. The device of claim 8, wherein the memory comprises a plurality of registers, and wherein each register stores data pertaining to a cardiac parameter and a cardiac rhythm type.

20. The device of claim 8, further comprising a pulse generator.

21. The device of claim 20, wherein the pulse generator delivers a first pacing pulse to a first ventricle and a second pacing pulse to a second ventricle.

22. The device of claim 20, wherein the processor controls the pulse generator as a function of a cardiac parameter stored in memory.

23. The device of claim 8, wherein the device is an implantable medical device.

24. A method comprising:

determining a cardiac rhythm type;

sensing a cardiac parameter; and

storing the cardiac parameter as a function of the cardiac rhythm type.

25. The method of claim 24, further comprising:

determining whether classification of a cardiac rhythm is indicated; and

classifying the cardiac rhythm as a cardiac rhythm type when classification of the cardiac rhythm is indicated.

26. The method of claim 25, wherein classifying the cardiac rhythm comprises identifying the cardiac rhythm type as one of supraventricular tachycardia, premature ventricular contraction, ventricular tachycardia and atrial fibrillation.

27. The method of claim 24, wherein the cardiac parameter comprises at least one of ventricular systolic pressure, ventricular diastolic pressure, pulse pressure, ventricular mean pressure, estimated pulmonary artery diastolic pressure, a derivative of pressure with respect to time, a systolic time interval, a pre-ejection interval, a heart rate, an activity, a temperature and an oxygen saturation.

28. A computer-readable medium comprising instructions that cause a processor to:

determine a cardiac rhythm type;

sense a cardiac parameter; and

store the cardiac parameter as a function of the cardiac rhythm type.

29. The medium of claim 28, the instructions further causing the processor to:

determine whether a classification of a cardiac rhythm is indicated; and

classify the cardiac rhythm as a cardiac rhythm type when classification of the cardiac rhythm is indicated.

30. The medium of claim 29, wherein classifying the cardiac rhythm comprises identifying the cardiac rhythm type as one of supraventricular tachycardia, premature ventricular contraction, ventricular tachycardia and atrial fibrillation.

31. The medium of claim 28, wherein the cardiac parameter comprises at least one of ventricular systolic pressure, ventricular diastolic pressure, pulse pressure, ventricular mean pressure, estimated pulmonary artery diastolic pressure, a derivative of pressure with respect to time, a systolic time interval, a pre-ejection interval, a heart rate, an activity, a temperature and an oxygen saturation.

32. A method comprising:

inserting a lead into a right ventricle, the lead including a distal end and having a left ventricular electrode positioned on the distal end, the lead further including a right ventricular electrode and a pressure sensor; and

implanting the lead in an interventricular septum, disposing the left ventricular electrode proximate to the left ventricle and the right ventricular electrode in the right ventricle.

33. The method of claim 32, further comprising disposing the pressure sensor in the right ventricle.

34. The method of claim 32, wherein the lead includes an atrial electrode, the method further comprising disposing the atrial electrode in the right atrium.

35. The method of claim 32, wherein the lead includes a defibrillation electrode, the method further comprising disposing the defibrillation electrode in the right ventricle.

36. The method of claim 32, wherein implanting the lead in the interventricular septum comprises:

puncturing a hole in the interventricular septum with a puncture needle, the puncture needle surrounding the lead;

retracting the puncture needle from the punctured hole; and

positioning the lead within the interventricular septum.

37. The method of claim 32, further comprising coupling the lead to an implantable medical device.

38. A device comprising:

monitoring means that monitors a cardiac parameter;

processing means that classifies a cardiac rhythm as a cardiac rhythm type; and

memory means that stores the cardiac parameter as a function of the cardiac rhythm type.

39. The device of claim 38, wherein the monitoring means monitors at least one of electrical activity of a heart, pressure in the heart, activity of a patient, temperature of the patient, and oxygen saturation of a patient.

40. The device of claim 38, wherein the monitoring means is a first monitoring means, the device further comprising a second monitoring means.

41. The device of claim 38, further comprising a sensing means.

42. The device of claim 41, wherein the sensing means comprises at least one of an electrode, a pressure sensor, an activity sensor, a temperature sensor and an oxygen sensor.

43. The device of claim 38, further comprising a lead means.

44. The device of claim 43, further comprising:

a first sensing means coupled to the lead; and

a second sensing means coupled to the lead.

45. The device of claim 38, wherein the device is an implantable medical device.