A multi-sensor compound right ventricular electrode and fusion cardiac pacing frequency adaptive adjustment method

Abstract

Provided is an accurate, fast and long-term stable fused CRAP. The electrode includes a positioning anchor, a silicone catheter, a sensor compartment and a connecting wire. The method monitors physiological information such as blood PPG, blood oxygen saturation, temperature and impedance of blood in the right ventricular cavity, and monitors blood temperature information, which is also a slowly changing metabolic rate, to provide cross-comparison with blood oxygen saturation information, improving monitoring accuracy of blood oxygen saturation. The rapidly changing right ventricular apical impedance information is monitored to improve rapid response ability of CRAP. The LEDs driving current is dynamically adjusted by monitoring the internal temperature of the PPG sensor and the impedance change of the attached biological tissue, which indirectly reflects thickness change of the attached biological tissue, thereby delaying the failure time of the PPG sensor.

Description

technical field [0001] The invention belongs to the field of biomedical engineering, and relates to a multi-sensor composite right ventricle electrode and a method for adaptively adjusting pacing frequency of a fusion heart. Background technique [0002] More than 50% of pacemaker implanters have lost their spontaneous heart rhythm due to sick sinus syndrome, and more than 90% of these implanters choose to implant a frequency-adaptive cardiac pacemaker. In my country, although the proportion of implanted frequency-adaptive cardiac pacemakers exceeds 50% of the total implanted pacemakers each year, most of them rely on non-closed-loop control motion sensors for heart rhythm regulation. Sensitive, but not sensitive to changes in non-exercise metabolism such as emotions and mental activities, and in some special cases, such as when the implanter goes down stairs, the heart rate will be faster than that of going up stairs, causing discomfort to the implanter. Using a closed-loop...

AI Technical Summary

Problems solved by technology

Therefore, it is difficult for the blood oxygen saturation of the right ventricle to respond quickly to the rapid changes caused by intense exercise.

In addition, the fibrous tissue wrapped around the electrode gradually thickens with the implantation time, which may eventually block the optical window and render the photoplethysmometric wave sensor ineffective.

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