Method and apparatus for determining heart rate
AssigneeMedtronic, Inc.
InventorsVincent E. Splett, Todd J. Sheldon
Life of this patent
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Abstract
A medical device having a motion sensor is configured to sense a motion signal, generate ventricular pacing pulses in a non-atrial tracking ventricular pacing mode and detect atrial event signals from the motion signal during the non-atrial tracking ventricular pacing mode. The medical device may be configured to determine atrial event intervals from the detected atrial event signals, determine a frequency distribution of the determined atrial event intervals and determine an atrial rate based on the frequency distribution of the detected atrial event intervals.
Claims23
A medical device comprising:
- a motion sensor configured to sense a motion signal;
- a pulse generator configured to generate ventricular pacing pulses;
- and
- a control circuit configured to:
- control the pulse generator to generate pacing pulses in a non-atrial tracking ventricular pacing mode;
- sense atrial event signals from the motion signal sensed by the motion sensor during the non-atrial tracking ventricular pacing mode;
- determine atrial event intervals from the sensed atrial event signals;
- determine a frequency distribution of the determined atrial event intervals;
- determine an atrial rate interval based on the frequency distribution of the atrial event intervals;
- set at least one control parameter based on the determined atrial rate interval, the at least one control parameter being used by the control circuit during an atrial synchronous ventricular pacing mode;
- and
- control the pulse generator to generate ventricular pacing pulses according to the atrial synchronous ventricular pacing mode.
A method comprising:
- sensing a motion signal;
- generating pacing pulses in a non-atrial tracking ventricular pacing mode;
- sensing atrial event signals from the motion signal during the non-atrial tracking ventricular pacing mode;
- determining atrial event intervals from the sensed atrial event signals;
- determining a frequency distribution of the determined atrial event intervals;
- determining an atrial rate interval based on the frequency distribution of the atrial event intervals;
- setting at least one control parameter based on the determined atrial rate interval, the at least one control parameter being used during an atrial synchronous ventricular pacing mode;
- and
- generating ventricular pacing pulses according to the atrial synchronous ventricular pacing mode.
A non-transitory, computer-readable storage medium comprising a set of instructions which, when executed by a control circuit of a medical device, cause the medical device to:
- sense a motion signal;
- generate pacing pulses in a non-atrial tracking ventricular pacing mode;
- detect atrial event signals from the motion signal during the non-atrial tracking ventricular pacing mode;
- determine atrial event intervals from the detected atrial event signals;
- determine a frequency distribution of the determined atrial event intervals;
- determine an atrial rate interval based on the frequency distribution of the detected atrial event intervals;
- set at least one control parameter based on the determined atrial rate interval, the at least one control parameter being used during an atrial synchronous ventricular pacing mode;
- and
- generate ventricular pacing pulses according to the atrial synchronous ventricular pacing mode.
Dependencies are inferred from the claim text.