Apparatus and method for testing an implantable medical device and sensing parameter settings
First Claim
1. An apparatus for use in selecting a setting of a sensing parameter of an implantable medical device (IMD) for a patient, the apparatus comprising:
- means for obtaining, from a sensing electrode associated with the IMD, cardiac data corresponding to a cardiac episode experienced by the patient, wherein the IMD is operated at a first setting of the sensing parameter when the cardiac data is obtained;
means for simulating, based upon the cardiac data, cardiac event identification if the IMD were operated at a second setting of the sensing parameter different than the first setting without reprogramming the sensing parameter to the second setting; and
means for reporting the simulated cardiac event identification performance of the IMD.
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Abstract
In an apparatus and a method for use in setting a sensing parameter of an implantable medical device (IMD) of a patient, cardiac data corresponding to a cardiac episode experienced by the patient is obtained from a sensing electrode associated with the IMD. At the time the cardiac data is obtained, the IMD is operated at a first setting of the sensing parameter. Based upon this cardiac data, a simulation is performed of cardiac event identification if the IMD were operated at a different setting of the sensing parameter. The simulated cardiac event identification performance of the IMD is then reported.
37 Citations
24 Claims
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1. An apparatus for use in selecting a setting of a sensing parameter of an implantable medical device (IMD) for a patient, the apparatus comprising:
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means for obtaining, from a sensing electrode associated with the IMD, cardiac data corresponding to a cardiac episode experienced by the patient, wherein the IMD is operated at a first setting of the sensing parameter when the cardiac data is obtained; means for simulating, based upon the cardiac data, cardiac event identification if the IMD were operated at a second setting of the sensing parameter different than the first setting without reprogramming the sensing parameter to the second setting; and means for reporting the simulated cardiac event identification performance of the IMD. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for testing an implantable medical device (IMD) following the implant of the IMD into a patient, the method comprising:
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inducing a cardiac episode in the patient; determining whether the implanted IMD, when operating at a first setting of a sensing parameter, detects the cardiac episode; obtaining digital cardiac data from a sensing electrode associated with the implanted IMD; and determining, from the digital cardiac data, whether the implanted IMD would detect the cardiac episode if it were operating at a second setting of the sensing parameter different than the first setting, without reprogramming the sensing parameter to the second setting. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for use in selecting a setting of a sensing parameter of an implantable medical device (IMD) for a patient, the method comprising:
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obtaining digital cardiac data corresponding to a cardiac episode experienced by the patient; simulating, based upon the digital cardiac data, cardiac event identification if the IMD were operated at each of a plurality of settings of the sensing parameter without reprogramming the sensing parameter to the plurality of settings; and reporting, for each sensing parameter setting, the corresponding simulated cardiac event identification performance of the IMD. - View Dependent Claims (19, 20, 21)
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22. A method for use in an implantable medical device (IMD), comprising:
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setting a default sensitivity for sensing cardiac events; sensing a cardiac signal; detecting ventricular fibrillation from the sensed cardiac signal using the default sensitivity setting; storing the cardiac signal; performing a simulation using the stored cardiac signal to determine whether the ventricular fibrillation would have been detected if the sensitivity setting were set at a second sensitivity setting less sensitive than the default setting, without reprogramming the sensitivity setting to the second setting; and generating a report in response to the simulation determining that the ventricular fibrillation would not have been detected if the sensitivity were set at the second sensitivity setting. - View Dependent Claims (23)
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24. A method for selecting a setting of a sensing parameter of an implantable medical device for a patient, the method comprising:
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selecting digital cardiac data from EGM data of the patient; selecting a sensing parameter test setting; analyzing the selected digital cardiac data using the selected test setting without reprogramming the IMD to the selected test setting to determine a minimum interval between R-waves of the selected cardiac data; comparing the minimum interval to a predetermined interval corresponding to arrhythmia detection; and reporting the test setting as a proposed sensing parameter setting to avoid oversensing in response to the minimum interval being greater than the predetermined interval.
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Specification