Systems, devices, and methods for setting cardiac pacing pulse parameters for a cardiac pacing device
First Claim
1. A leadless cardiac pacemaker (LCP) for delivering pacing pulses to a heart of a patient, the LCP comprising:
- a power supply for providing a power supply voltage;
a pair of electrodes for delivering pacing pulses to the heart of the patient;
a controller operably connected to the pair of electrodes and the power supply, the controller configured to;
identify a capture threshold by;
setting a pace amplitude to the power supply voltage;
delivering via the pair of electrodes a plurality of pacing pulses having the pace amplitude with different pulse widths to identity a capture pulse width that corresponds to the capture threshold of the heart;
deliver via the pair of electrodes a plurality of pacing pulses having the pace amplitude and a pacing pulse width that is greater than the capture pulse width by a pulse width margin.
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Accused Products
Abstract
Systems, devices, and methods for pacing a heart of a patient are disclosed. A device may include a leadless cardiac pacemaker (LCP) that includes a power supply, a pair of electrodes, and a controller operably connected to the electrodes and the power supply. The controller may identify a capture threshold by setting a pace amplitude at a power supply voltage of the power supply and deliver pacing stimulation pulses with different pulse widths to identify the capture threshold. The LCP may then deliver pacing stimulation pulses based, at least in part, on a pulse amplitude and pulse width associated with the capture threshold, and also adding a capture margin. In some cases, the pulse amplitude may change over time and the LCP may adjust a pulse width along a strength-duration curve to account for the pulse amplitude change and maintain a capture threshold and capture margin.
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Citations
20 Claims
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1. A leadless cardiac pacemaker (LCP) for delivering pacing pulses to a heart of a patient, the LCP comprising:
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a power supply for providing a power supply voltage; a pair of electrodes for delivering pacing pulses to the heart of the patient; a controller operably connected to the pair of electrodes and the power supply, the controller configured to; identify a capture threshold by; setting a pace amplitude to the power supply voltage; delivering via the pair of electrodes a plurality of pacing pulses having the pace amplitude with different pulse widths to identity a capture pulse width that corresponds to the capture threshold of the heart; deliver via the pair of electrodes a plurality of pacing pulses having the pace amplitude and a pacing pulse width that is greater than the capture pulse width by a pulse width margin. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A leadless cardiac pacemaker (LCP) for delivering pacing pulses to a heart of a patient, the LCP comprising:
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a pair of electrodes for delivering pacing pulses to the heart of the patient; a controller operably connected to the pair of electrodes, the controller configured to; identify a capture threshold by delivering via the pair of electrodes a plurality of pacing pulses while varying a first pacing pulse parameter value while leaving a second pacing pulse parameter value fixed in order to identity a capture value for the first pacing pulse parameter; and deliver via the pair of electrodes a plurality of pacing pulses that each have the first pacing pulse parameter value at the capture value and the second pacing pulse parameter value at a capture margin above the fixed second pacing pulse parameter value. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A leadless cardiac pacemaker (LCP) for delivering pacing pulses to a heart of a patient, the LCP comprising:
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a pair of electrodes for delivering pacing pulses to the heart of the patient; a controller operably connected to the pair of electrodes, the controller configured to; receive a user selectable power efficiency value from a remote device; identify a pulse width and pulse amplitude combination that corresponds to a capture threshold; apply a capture margin to one or more of the pulse width and pulse amplitude resulting in a pacing pulse width and a pacing pulse amplitude, wherein the capture margin is based at least in part on the user selectable power efficiency value; and deliver pacing pulses using the pacing pulse width and the pacing pulse amplitude. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification