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

Abstract

The invention provides an accurate, fast and long-term stable multi-sensor composite right ventricular electrode fusion adaptive cardiac pacing frequency adjustment method. The electrode includes a positioning anchor, a silicone catheter, a sensor cabin and a connecting wire. The present invention simultaneously monitors physiological information such as blood photoplethysmography, blood oxygen saturation, temperature and impedance in the right ventricular cavity, and provides cross-comparison with blood oxygen saturation information by monitoring blood temperature information, which is also a slow-changing metabolic amount, to improve The accuracy of blood oxygen saturation monitoring; improving the rapid response ability of pacing frequency adaptation by monitoring the rapidly changing right ventricular apical impedance information; indirectly reflecting the attached biological tissue by monitoring the internal temperature of the photoplethysm wave sensor and the impedance changes of the surface attached biological tissue. The thickness changes to dynamically adjust the LED emission current, thereby prolonging the failure time of the photoplethysm wave 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.

Images