国际生物医学工程杂志
國際生物醫學工程雜誌
국제생물의학공정잡지
INTERNATIONAL JOURNAL OF BIOMEDICAL ENGINEERING
2014年
2期
89-92
,共4页
王磊%卓俊骐%吴旭%王妍%赵舒%沙洪
王磊%卓俊騏%吳旭%王妍%趙舒%沙洪
왕뢰%탁준기%오욱%왕연%조서%사홍
复阻抗%肌肉损伤%四电极%AD5933
複阻抗%肌肉損傷%四電極%AD5933
복조항%기육손상%사전겁%AD5933
Bioimpedance%Muscle injury%Four-electrode%AD5933
目的 设计一种高精度、简单方便的生物复阻抗信息检测仪器,可提取人体局部肌肉组织损伤的电阻抗特征,指导临床治疗与康复.方法 采用四电极模式,一对电流注入激励电极和一对电压检测电极;设计了基于AD5933与AD844的激励电流源、屏蔽驱动电路、放大电路及数字解调电路,研发了便携式生物复阻抗信息检测仪器.结果 以三元件模型作为测量对象,将笔者设计的生物复阻抗信息检测仪与安捷伦4294A阻抗分析仪进行测量对比分析,结果显示,在频率为1～100 kHz,阻抗模量信息相对误差与阻抗分析仪基本相同,相位误差小于1..以1例大腿后侧肌群中度拉伤患者作为测量对象进行的连续跟踪测量,结果符合临床诊断与生理学意义.结论 本研究设计的生物复阻抗信息检测仪具有测量精度高、操作简单、使用方便等优点,可用于指导人体局部组织损伤过程的临床诊断、治疗与康复监测.
目的 設計一種高精度、簡單方便的生物複阻抗信息檢測儀器,可提取人體跼部肌肉組織損傷的電阻抗特徵,指導臨床治療與康複.方法 採用四電極模式,一對電流註入激勵電極和一對電壓檢測電極;設計瞭基于AD5933與AD844的激勵電流源、屏蔽驅動電路、放大電路及數字解調電路,研髮瞭便攜式生物複阻抗信息檢測儀器.結果 以三元件模型作為測量對象,將筆者設計的生物複阻抗信息檢測儀與安捷倫4294A阻抗分析儀進行測量對比分析,結果顯示,在頻率為1～100 kHz,阻抗模量信息相對誤差與阻抗分析儀基本相同,相位誤差小于1..以1例大腿後側肌群中度拉傷患者作為測量對象進行的連續跟蹤測量,結果符閤臨床診斷與生理學意義.結論 本研究設計的生物複阻抗信息檢測儀具有測量精度高、操作簡單、使用方便等優點,可用于指導人體跼部組織損傷過程的臨床診斷、治療與康複鑑測.
목적 설계일충고정도、간단방편적생물복조항신식검측의기,가제취인체국부기육조직손상적전조항특정,지도림상치료여강복.방법 채용사전겁모식,일대전류주입격려전겁화일대전압검측전겁;설계료기우AD5933여AD844적격려전류원、병폐구동전로、방대전로급수자해조전로,연발료편휴식생물복조항신식검측의기.결과 이삼원건모형작위측량대상,장필자설계적생물복조항신식검측의여안첩륜4294A조항분석의진행측량대비분석,결과현시,재빈솔위1～100 kHz,조항모량신식상대오차여조항분석의기본상동,상위오차소우1..이1례대퇴후측기군중도랍상환자작위측량대상진행적련속근종측량,결과부합림상진단여생이학의의.결론 본연구설계적생물복조항신식검측의구유측량정도고、조작간단、사용방편등우점,가용우지도인체국부조직손상과정적림상진단、치료여강복감측.
Objective To develop and test a high precision medical device which allows measurement of bioimpedance in regions below skin surface,and to enable the assessment of strained muscle's situation and instruct patient's rehabilitation exercise.Methods The system was based on the four-electrode impedance measurement mode and designed by using impedance converter network analyzer AD5933 and monolithic operational amplifier AD844.The hardware consisted of an excitation current source,a response signal adjustment circuit,a digital demodulation circuit and a shield driving circuit.This hardware circuit was combined with a LCD screen and a keyboard,which turned it into a portable precision bioimpedance testing device.Results Using an model of three components as test target,a comparison between the device and the Agilent 4294A precision impedance analyzer was presented.In the range of 1 kHz to 100 kHz,the device showed the similar relative error of the complex impedance's modulus and 1 degree absolute error of the complex impedance's phase.The strained muscle's bioelectrical impedance changes in a clinical case during the convalescent were presented and discussed with the results proven to be clinical meaningful.Conclusions The device is accurate,simple and convenient,which is proved qualified on helping doctors to assess the injury states of the strained muscle and to instruct patient's rehabilitation exercise.
