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특허 상세정보

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내보내기 페이스북 공유 카카오톡 공유

Cardiac pacing system with improved end-of-life detector

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) A61N-001/37   
미국특허분류(USC) 607/29
출원번호 US-0132713 (1993-10-06)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 54  인용 특허 : 0
초록
▼

A pacemaker is provided having an improved circuit for obtaining a measure of battery end-of-life. The EOL detector includes an input stage with a current mirror output providing a current which is proportional to the current being consumed by the pacemaker circuitry, and thus being expended by the battery. The proportional current is directed to charge a capacitor, which is periodically discharged at a constant current, following which the battery goes through repeated cycles of charging and discharging. A measuring circuit measures the time of capacito...

대표
청구항
▼

A pacemaker having a battery, pacemaker circuitry for carrying out pacing functions, and an energy consumption detector, said detector comprising (a) accumulating means for accumulating a signal representative of the integral of pacemaker circuitry current over the time since it last started to accumulate said signal; (b) readout means for reading out said accumulated signal when it reaches a predetermined threshold and for developing therefrom a measure of battery expenditure over said time; (c) said readout means having means for zeroing out said accum...

이 특허를 인용한 특허 피인용횟수: 54

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