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Leadless 페이스메이커용 심전도 측정 및 자극 신호 발생 회로
김경환(Kyounghwan Kim),유무경(Mookyoung Yoo),강상균(Sanggyun Kang),진병관(Byeongkwan),손혁태(Jin, Hyeoktae),남기배(Son, Kibae Nam),안승민(Seungmin Ahn),위지향(Jihyang Wi),고형호(Hyoungho Ko) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6
The electrocardiogram (ECG) sensing and pacing pulse generating circuit is a vital feature of the leadless pacemaker, which is an implantable device designed to regulate the hearts rhythm. Unlike traditional pacemakers, this device is placed directly inside the heart, without the need for a lead wire. The ECG sensing feature enables the pacemaker to monitor the hearts electrical activity, which allows it to detect any irregularities in the hearts rhythm. The device then adjusts the pacing rate of the pacemaker to ensure that the heart beats at a regular and consistent rate. The pacing pulse generating circuit delivers electrical stimulation to the heart to improve its function and reduce the risk of heart failure. The pacemaker can be programmed to provide different levels of stimulation, depending on the patients specific needs. To accomplish low noise characteristic and low power consumption, a current-feedback instrumentation amplifier (CFIA) is adopted In the ECG sensing channel, a 60-Hz notch filter is adopted to eliminate powerline interface (PLI). The input-referred noise is 3.69 VRMS and the power consumption are 4.5 μW to 19.4 μW. This low-power consumption characteristic increases the efficiency of the battery in the proposed leadless pacemaker.