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Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0791206 (1997-01-31) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 455 인용 특허 : 18 |
An impedance monitor for discerning edema through evaluation of respiratory rate. Preferred embodiment includes edema monitor and trigger to initiate diagnostic reporting or corrective action when activated. Recording of Long Term Average and Short Term Average values for secondary edema measure bas
An impedance monitor for discerning edema through evaluation of respiratory rate. Preferred embodiment includes edema monitor and trigger to initiate diagnostic reporting or corrective action when activated. Recording of Long Term Average and Short Term Average values for secondary edema measure based on DC signal level are described as are methods and apparatus for removing unwanted recurring noise.
[ What is claimed is:] [1.] Implantable apparatus for detection of impedance measurement in a region of a living body's tissue, having a plurality of electrodes exposed to said body tissue on an outer surface of a housing or on another support coupled to said body, said housing containing electrical
[ What is claimed is:] [1.] Implantable apparatus for detection of impedance measurement in a region of a living body's tissue, having a plurality of electrodes exposed to said body tissue on an outer surface of a housing or on another support coupled to said body, said housing containing electrical energy pulse delivery means connected to at least one of said plurality of electrodes so as to create an electric field in said body in an area of tissue around and adjacent said one electrode and energy measurement means connected to at least one other of said plurality of said electrodes also located within said electric field, so that impedance measurements in the living body can be made in said field, said implantable device further characterized by having:timing circuit for timing the measurement of impedance to coincide with delivery of said energy pulse,memory circuit for storing a value representative of a dc value of said measured impedance at an instant in time,dc sampling offset circuit for determining a dc offset value of a next measurement of said impedance and connected to provide a dc offset value signal to said memory circuit,edema valuation and output circuit for generating output signals indicative of a level of edema related to the impedance values from in said memory circuit and said offset circuit, andwherein said memory circuit stores either said dc offset values or said dc values or both, over a period of days.
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