Ventricular leadless pacing device mode switching
First Claim
1. A method comprising:
- sensing an electrical cardiac signal;
detecting, by a processing module of a leadless pacing device, atrial oversensing while the leadless pacing device is in a sensing without pacing mode;
determining, by the processing module and based on the electrical cardiac signal, whether intrinsic ventricular activity is occurring in conjunction with the atrial oversensing;
when the determined intrinsic ventricular activity is occurring in conjunction with the atrial oversensing, controlling, by the processing module, the leadless pacing device to continue operating in the sensing without pacing mode; and
when the determined intrinsic ventricular activity is not occurring in conjunction with the atrial oversensing, controlling, by the processing module, the leadless pacing device to deliver a ventricular pacing pulse to the patient according to an asynchronous ventricular pacing mode.
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Accused Products
Abstract
In some examples, a leadless pacing device (LPD) is configured to switch from a sensing without pacing mode to ventricular pacing mode in response to determining that no intrinsic ventricular activity was detected within a ventricular event detection window for at least one cardiac cycle, which may be referred to as loss of conduction. The ventricular pacing mode may be selected based on whether atrial oversensing is detected in combination with the loss of conduction. In some examples, an atrio-ventricular synchronous pacing mode is selected in response to detecting loss of conduction and in response to determining that atrial oversensing is not detected. In addition, in some examples, an asynchronous ventricular pacing mode is selected in response to detecting both atrial oversensing and loss of conduction.
425 Citations
52 Claims
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1. A method comprising:
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sensing an electrical cardiac signal; detecting, by a processing module of a leadless pacing device, atrial oversensing while the leadless pacing device is in a sensing without pacing mode; determining, by the processing module and based on the electrical cardiac signal, whether intrinsic ventricular activity is occurring in conjunction with the atrial oversensing; when the determined intrinsic ventricular activity is occurring in conjunction with the atrial oversensing, controlling, by the processing module, the leadless pacing device to continue operating in the sensing without pacing mode; and when the determined intrinsic ventricular activity is not occurring in conjunction with the atrial oversensing, controlling, by the processing module, the leadless pacing device to deliver a ventricular pacing pulse to the patient according to an asynchronous ventricular pacing mode. - 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)
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25. A leadless pacing system comprising:
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a leadless pacing device configured to sense an electric cardiac signal and configured to operate in a sensing without pacing mode and an asynchronous ventricular pacing mode; and a processing module configured to; detect atrial oversensing while the leadless pacing device is in a sensing without pacing mode, determine, based on the electrical cardiac signal, whether intrinsic ventricular activity is occurring in conjunction with the atrial oversensing, when the determined intrinsic ventricular activity is occurring in conjunction with the atrial oversensing, control the leadless pacing device to continue operating in the sensing without pacing mode, and when the determined intrinsic ventricular activity is not occurring in conjunction with the atrial oversensing, control the leadless pacing device to deliver a ventricular pacing pulse to the patient according to the asynchronous ventricular pacing mode. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A leadless pacing device configurable to operate in a sensing without pacing mode and an asynchronous ventricular pacing mode, the leadless pacing device comprising:
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means for sensing an electrical cardiac signal; means for detecting atrial oversensing while the leadless pacing device is in a sensing without pacing mode; means for determining, based on the electrical cardiac signal, whether intrinsic ventricular activity is occurring in conjunction with the atrial oversensing; means for controlling the leadless pacing device to continue operating in the sensing without pacing mode when the determined intrinsic ventricular activity is occurring in conjunction with the atrial oversensing; and means for controlling the leadless pacing device to deliver a ventricular pacing pulse to the patient according to the asynchronous ventricular pacing mode when the determined intrinsic ventricular activity is not occurring in conjunction with the atrial oversensing. - View Dependent Claims (51)
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52. A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing module of a leadless pacing device configurable to operate in a sensing without pacing mode and an asynchronous ventricular pacing mode, cause the processing module to:
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sense an electrical cardiac signal; detect atrial oversensing while the leadless pacing device is in a sensing without pacing mode; determine, based on the electrical cardiac signal, whether intrinsic ventricular activity is occurring in conjunction with the atrial oversensing; when the determined intrinsic ventricular activity is occurring in conjunction with the atrial oversensing, control the leadless pacing device to continue operating in the sensing without pacing mode; and when the determined intrinsic ventricular activity is not occurring in conjunction with the atrial oversensing, control the leadless pacing device to deliver a ventricular pacing pulse to the patient according to the asynchronous ventricular pacing mode.
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Specification