System and method for monitoring or treating nervous system disorders
First Claim
Patent Images
1. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
- obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient;
obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient;
analyzing timing relationships between detected neurological events and detected cardiac events before enabling use of the cardiac event detection signal for detecting neurological events;
identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; and
enabling use of the cardiac event detection signal to detect-neurological events when the timing relationships between detected neurological events and detected cardiac events meet one or more predetermined criteria.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of comparing cardiac and neurological event detection signals to indicate whether the cardiac event detection signal may facilitate detection of neurological events. The method includes obtaining a signal indicating detected neurological events, obtaining a signal indicating detected cardiac events, analyzing the timing relationships between the detected neurological and cardiac events to identify matched events, and using the matched events to indicate whether the cardiac event detection signal facilitates detection of neurological events.
-
Citations
80 Claims
-
1. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and detected cardiac events before enabling use of the cardiac event detection signal for detecting neurological events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; and enabling use of the cardiac event detection signal to detect-neurological events when the timing relationships between detected neurological events and detected cardiac events meet one or more predetermined criteria. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
-
-
36. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events; and calculating a rate of concordance between the neurological and cardiac event detection signals, and indicating that the cardiac event detection signal facilitates detection of the neurological events when the rate of concordance exceeds a threshold, wherein calculating the rate of concordance comprises dividing a number of matched events by a number of detected neurological events.
-
-
37. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events; calculating a rate of concordance between the neurological and cardiac event detection signals, and indicating that the cardiac event detection signal facilitates detection of the neurological events when the rate of concordance exceeds a threshold; and enabling use of the cardiac event detection signal to detect neurological events when the rate of concordance between the neurological and cardiac event detection signals exceeds the threshold. - View Dependent Claims (38, 39, 40)
-
-
41. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; identifying a false positive event when one of the detected cardiac events is not temporally related to one of the detected neurological events; indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events and false positive events; and calculating a false positive rate, the false positive rate being equal to a number of false positive events divided by a number of detected neurological events. - View Dependent Claims (42)
-
-
43. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; identifying a false positive event when one of the detected cardiac events is not temporally related to one of the detected neurological events; indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events and false positive events; and calculating a false positive rate, the false positive rate being equal to a number of false positive events per unit of time. - View Dependent Claims (44)
-
-
45. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events; and for each of the matched events, determining a latency of the detected cardiac event with respect to a detected neurological event, wherein determining latency comprises calculating a representative value of a time by which the matched cardiac events precede the corresponding matched neurological events.
-
-
46. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events; and for each of the matched events, determining a latency of the detected cardiac event with respect to a detected neurological event, wherein determining latency comprises calculating how frequently the matched cardiac events precede the corresponding matched neurological events.
-
-
47. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events; for each of the matched events, determining a latency of the detected cardiac event with respect to a detected neurological event; and enabling use of the cardiac event detection signal to detect neurological events when the latency of the detected cardiac events meets a predetermined criterion.
-
-
48. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events; and calculating a false negative rate, the false negative rate being equal to a number of false negative events divided by a number of detected neurological events. - View Dependent Claims (49)
-
-
50. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events; calculating a rate of concordance between the neurological and cardiac event detection signals, the rate of concordance being equal to a number of matched events divided by a number of detected neurological events; calculating a false positive rate, the false positive rate being equal to a number of false positive events divided by the number of detected neurological events; calculating a false negative rate, the false negative rate being equal to a number of false negative events divided by the number of detected neurological events; for each of the matched events, determining a latency of the detected cardiac event with respect to a detected neurological event; and enabling use of the cardiac event detection signal to detect neurological events when a combination of the rate of concordance, false positive rate, false negative rate, and latency of the detected cardiac events meet predetermined criteria.
-
-
51. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events; calculating a rate of concordance between the neurological and cardiac event detection signals, the rate of concordance being equal to a number of matched events divided by a number of detected neurological events; calculating a false positive rate, the false positive rate being equal to a number of false positive events per unit of time; calculating a false negative rate, the false negative rate being equal to a number of false negative events divided by the number of detected neurological events; for each of the matched events, determining a latency of the detected cardiac event with respect to a detected neurological event; and enabling use of the cardiac event detection signal to detect neurological events when a combination of the rate of concordance, false positive rate, false negative rate, and latency of the detected cardiac events meet predetermined criteria.
-
-
52. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events; and for the cardiac detections classified as matched, further classifying the cardiac detections as either; (a) overlapping, if (i) the cardiac event has a beginning time that occurs before an end time of the matched neurological event, and (ii) the cardiac event has a termination time that occurs after a start time of the matched neurological event;
or(b) non-overlapping. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
-
-
63. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between detected neurological events and cardiac events; identifying a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events; and indicating whether the cardiac event detection signal facilitates detection of neurological events based on matched events; classifying each matched event into one of two or more categories based upon the timing relationship between the cardiac and neurological events; assigning a weighting factor to each matched event based upon the category for each matched event; calculating a rate of concordance between the neurological and cardiac event detection signals utilizing the weighting factors, wherein calculating the rate of concordance comprises dividing a weighted sum of matched events by a number of detected neurological events; and indicating that the cardiac event detection signal facilitates detection of the neurological events when the rate of concordance exceeds a threshold. - View Dependent Claims (64, 65)
-
-
66. An implantable medical device (IMD) for processing cardiac and neurological event detection signals, the device comprising:
-
a biocompatible housing adapted to be implanted in a patient; a power source; and a processor, the processor being configured to obtain a neurological event detection signal, the neurological event detection signal indicating detected neurological events in the patient; obtain a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyze timing relationships between detected neurological events and detected cardiac events before enabling use of the cardiac event detection signal for detecting neurological events; identify a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events, and enable use of the cardiac event detection signal to detect neurological events when the timing relationships between detected neurological events and detected cardiac events meet one or more predetermined criteria. - View Dependent Claims (67, 68, 69, 70)
-
-
71. An implantable medical device (IMD) for processing cardiac and neurological event detection signals, the device comprising:
-
a biocompatible housing adapted to be implanted in a patient; a power source; and a processor, the processor being configured to obtain a neurological event detection signal, the neurological event detection signal indicating detected neurological events in the patient; obtain a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyze timing relationships between detected neurological events and cardiac events; identify a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events and indicate whether the cardiac event detection signal facilitates detection of neurological events based on the matched events; and calculate a rate of concordance between the neurological and cardiac event detection signals and indicate that the cardiac event detection signal facilitates detection of the neurological events when the rate of concordance exceeds a threshold; wherein calculating the rate of concordance comprises dividing a number of matched events by a number of detected neurological events.
-
-
72. An implantable medical device (IMD) for processing cardiac and neurological event detection signals, the device comprising:
-
a biocompatible housing adapted to be implanted in a patient; a power source; and a processor, the processor being configured to obtain a neurological event detection signal, the neurological event detection signal indicating detected neurological events in the patient; obtain a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyze timing relationships between detected neurological events and cardiac events; identify a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events and indicate whether the cardiac event detection signal facilitates detection of neurological events based on the matched events; calculate a rate of concordance between the neurological and cardiac event detection signals and indicate that the cardiac event detection signal facilitates detection of the neurological events when the rate of concordance exceeds a threshold; and enable use of the cardiac event detection signal to detect neurological events when the rate of concordance between the neurological and cardiac event detection signals exceeds the threshold. - View Dependent Claims (73, 74)
-
-
75. An implantable medical device (IMD) for processing cardiac and neurological event detection signals, the device comprising:
-
a biocompatible housing adapted to be implanted in a patient; a power source; and a processor, the processor being configured to obtain a neurological event detection signal, the neurological event detection signal indicating detected neurological events in the patient; obtain a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyze timing relationships between detected neurological events and cardiac events; identify a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events and indicate whether the cardiac event detection signal facilitates detection of neurological events based on the matched events; identify a false positive event when one of the detected cardiac events is not temporally related to one of the detected neurological events, calculate a false positive rate, the false positive rate being equal to a number of false positive events divided by a number of detected neurological events, and enable use of the cardiac event detection signal to detect neurological events when the false positive rate is below a predetermined level.
-
-
76. An implantable medical device (IMD) for processing cardiac and neurological event detection signals, the device comprising:
-
a biocompatible housing adapted to be implanted in a patient; a power source; and a processor, the processor being configured to obtain a neurological event detection signal, the neurological event detection signal indicating detected neurological events in the patient; obtain a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyze timing relationships between detected neurological events and cardiac events; identify a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events and indicate whether the cardiac event detection signal facilitates detection of neurological events based on the matched events; identify a false positive event when one of the detected cardiac events is not temporally related to one of the detected neurological events, calculate a false positive rate, the false positive rate being equal to a number of false positive events per unit of time, and enable use of the cardiac event detection signal to detect neurological events when the false positive rate is below a predetermined level.
-
-
77. An implantable medical device (IMD) for processing cardiac and neurological event detection signals, the device comprising:
-
a biocompatible housing adapted to be implanted in a patient; a power source; and a processor, the processor being configured to obtain a neurological event detection signal, the neurological event detection signal indicating detected neurological events in the patient; obtain a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyze timing relationships between detected neurological events and cardiac events; identify a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events and indicate whether the cardiac event detection signal facilitates detection of neurological events based on the matched events; and calculate a false negative rate, the false negative rate being equal to a number of false negative events divided by a number of detected neurological events, and enable use of the cardiac event detection signal to detect neurological events when the false negative rate is below a predetermined level.
-
-
78. A non-transitory computer-readable medium programmed with instructions for performing a method of comparing a cardiac event detection signal to a neurological event detection signal, the medium comprising instructions for causing a programmable processor to:
-
obtain a neurological event detection signal, the neurological event detection signal indicating detected neurological events in the patient; obtain a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyze timing relationships between detected neurological events and detected cardiac events before enabling use of the cardiac event detection signal for detecting neurological events; identify a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events, and enable use of the cardiac event detection signal to detect neurological events when the timing relationships between detected neurological events and detected cardiac events meet one or more predetermined criteria.
-
-
79. A system for comparing a cardiac event detection signal to a neurological event detection signal, the system comprising:
-
communication means for obtaining a neurological event detection signal and a cardiac event detection signal, the neurological event detection signal indicating detected neurological events in the patient, the cardiac event detection signal indicating detected cardiac events in the patient; and a processor configured to analyze timing relationships between detected neurological events and cardiac events before enabling use of the cardiac event detection signal for detecting neurological events, identify a matched event when one of the detected neurological events is temporally related to one of the detected cardiac events, and enable use of the cardiac event detection signal to detect neurological events when the timing relationships between detected neurological events and detected cardiac events meet one or more predetermined criteria.
-
-
80. A method of comparing a cardiac event detection signal to a neurological event detection signal, the method comprising:
-
obtaining a neurological event detection signal, the neurological event detection signal indicating detected neurological events in a patient; obtaining a cardiac event detection signal, the cardiac event detection signal indicating detected cardiac events in the patient; analyzing timing relationships between a minimum number of detected neurological events and detected cardiac events before enabling use of the cardiac event detection signal for detecting neurological events; and enabling use of the cardiac event detection signal to detect neurological events based on the timing relationships between detected neurological events and detected cardiac events.
-
Specification