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US 12,605,555 B2Granted
Cardiac pacing threshold acquisition method, pacing control method and apparatus, and medical device
AssigneeUnited InnoMed (Shanghai) Limited
InventorLi Wang
Life of this patent
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Abstract
A cardiac pacing threshold acquisition method, a pacing control method and apparatus, and a medical device. The acquisition method comprises: in a pacing test phase, using an initial pacing frequency and an initial pacing output to perform pacing on a patient; under the pacing operation, measuring first response information of the ventricle of a patient to the initial pacing frequency; according to whether an R wave is present in the first response information, adjusting pulse voltage amplitude or pulse width of the initial pacing frequency so as to obtain a cardiac pacing threshold corresponding to the patient.
Claims20
A medical device, wherein the medical device comprises a pacing control apparatus, and the pacing control apparatus comprises an acquisition apparatus for a cardiac pacing threshold;
- the acquisition apparatus comprises:
- a pacing output presetting module, configured to preset an initial pacing output;
- wherein the initial pacing output comprises an initial pacing voltage amplitude and/or pulse width;
- a heart rate acquisition module, configured to detect a first actual heart rate of the heart of a patient in a pacing test phase;
- a pacing module determining an initial pacing frequency according to the first actual heart rate, and pacing the patient using the initial pacing frequency and the initial pacing output, wherein the initial pacing frequency is greater than the first actual heart rate;
- a response information detection module, configured to detect first response information of a ventricle of the patient to a current pacing output under a pacing operation;
- the response information detection module is also configured to acquire the first response information of a second set number of ventricular pacing beat by beat after skipping the first response information of a first set number of ventricular pacing under the current pacing output;
- a first judgment module, configured to adjust the current pacing output according to the occurrence situation of an R wave in the first response information of each of the second set number of ventricular pacing to acquire a cardiac pacing threshold corresponding to the patient;
- wherein when the heart rate state of the patient meets a pacing condition, a preset pacing output which is output by the medical device is determined based on the cardiac pacing threshold, and the preset pacing output is greater than the cardiac pacing threshold.
6 more elements
An acquisition method for a cardiac pacing threshold, comprising:
- presetting an initial pacing output;
- wherein the initial pacing output comprises an initial pacing voltage amplitude and/or pulse width;
- detecting a first actual heart rate of the heart of a patient in a pacing test phase;
- determining an initial pacing frequency according to the first actual heart rate, and pacing the patient using the initial pacing frequency and the initial pacing output, wherein the initial pacing frequency is greater than the first actual heart rate;
- detecting first response information of a ventricle of the patient to a current pacing output under a pacing operation;
- acquiring the first response information of a second set number of ventricular pacing beat by beat after skipping the first response information of a first set number of ventricular pacing under the current pacing output;
- analyzing occurrence situation of an R wave in the first response information of each of the second set number of ventricular pacing;
- and
- adjusting the current pacing output according to the occurrence situation of an R wave in the first response information of each of the second set number of ventricular pacing to acquire a cardiac pacing threshold corresponding to the patient;
- wherein when the heart rate of the patient meets a pacing condition, a preset pacing output which is output by a medical device is determined based on the cardiac pacing threshold, and the preset pacing output is greater than the cardiac pacing threshold.
7 more elements
A pacing control method, comprising:
- acquiring a second actual heart rate of the heart of a patient;
- judging whether the second actual heart rate meets a preset low heart rate condition, and if so, performing cardiac pacing on the patient using a preset pacing frequency and a preset pacing output:
- wherein the preset low heart rate condition is used for representing that the patient is in a life-threatening state;
- and
- detecting second response information of a ventricle of the patient to the preset pacing output under a pacing operation, acquiring the second response information of a second set number of ventricular pacing beat by beat after skipping the second response information of a first set number of ventricular pacing under the preset pacing output, judging whether an R wave has occurred in the second response information of each of the second set number of ventricular pacing, and if so, determining that the preset pacing output is effective, and continuing to pace the patient using the preset pacing output;
- otherwise, determining that the preset pacing output is ineffective, and adjusting the preset pacing output to pace the patient using the adjusted pacing output;
- or, performing a pacing-triggered cardiac contractility modulation on the patient;
- or, detecting the second response information of the ventricle of the patient to the preset pacing output under the pacing operation, acquiring the second response information of a second set number of ventricular pacing beat by beat after skipping the second response information of a first set number of ventricular pacing under the preset pacing output, judging whether the R wave has occurred in the second response information of each of the second set number of ventricular pacing, and if so, determining that the preset pacing output is effective, and continuing to pace the patient using the preset pacing output, and simultaneously performing an R wave-triggered cardiac contractility modulation on the patient.
5 more elements
Dependencies are inferred from the claim text.