CN1046386A - 冲量法测定尿流的方法及仪器 - Google Patents

冲量法测定尿流的方法及仪器 Download PDF

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CN1046386A
CN1046386A CN89102163A CN89102163A CN1046386A CN 1046386 A CN1046386 A CN 1046386A CN 89102163 A CN89102163 A CN 89102163A CN 89102163 A CN89102163 A CN 89102163A CN 1046386 A CN1046386 A CN 1046386A
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urine
instrument
urine stream
stream
displacement
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丁天怀
张正义
邵达友
魏嫒
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Tsinghua University
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Tsinghua University
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Priority to CN89102163A priority Critical patent/CN1046386A/zh
Priority to US07/521,825 priority patent/US5078012A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/28—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/20—Measuring for diagnostic purposes; Identification of persons for measuring urological functions restricted to the evaluation of the urinary system
    • A61B5/207—Sensing devices adapted to collect urine
    • A61B5/208—Sensing devices adapted to collect urine adapted to determine urine quantity, e.g. flow, volume
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/206—Measuring pressure, force or momentum of a fluid flow which is forced to change its direction

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Physiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Urology & Nephrology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measuring Volume Flow (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

一种用冲量法测定尿流的方法及仪器，按该法原理制成的尿流仪可以测出排尿的动态特性，灵敏度高，性能稳定，该仪器可实时打印出最大尿流率，平均尿流率，总排尿量，总排尿时间，总尿流时间及最大尿流率出现时间等数据，可作为临床诊断时的参数。

Description

本发明属于对人体尿流率的检测仪器。
尿流率测定是尿流动力学检查技术的重要组成部分。它要求实时地测出病人排尿过程中的尿流率、排尿时间及总尿量和尿流率随时间变化的关系。这些测定结果不仅对病人下尿路梗阻性疾患的筛选和诊断有重要意义，而且对客观评价一些药物和手术治疗效果及对病程进行系统观察亦有很大价值，所以一直得到泌尿科专家的高度重视。
但是，要获得准确可靠的尿流参数，必须借助精良的尿流计。国内外已有用容积法、称重法、动力平衡法等原理制造出临床使用的手动或自动尿流计。但其结果往往并不理想，迄今为止，还没有真正能准确体现并测定排尿过程动力参数的成功仪器。
丹麦DANTEC公司URODYN    1000自动流率计中尿流传感器的工作原理是：将病人排出的尿引到一个作匀速转动的圆盘上。圆盘由直流马达带动。为了维持圆盘转速不变所需的电能与尿流率成正比，以此测定尿流率。但该仪器测定尿流率的灵敏度不高，尤其在排尿起始及终止阶断更低。难以满足医学上临床诊断的需要。
本发明的目的是研制一种灵敏度高，能精确反映动态尿流率的尿流测量方法及其仪器。
本发明的构成是用冲量来测定尿流的动态特性。其具体原理如下：尿流以一定的速度冲击一弹性悬臂使其产生位移，其位移量的大小与尿流的冲量成正比，再通过位移传感器（可用电容、电感、蜗流传感器）将弹性悬臂的位移量转换成电量，将所得电信号经过整形、放大、A/D转换、微机处理后，即可打印出动态的尿流曲线。
为便于叙述说明附图如下：
图1为冲量法尿流仪原理图
1为接尿桶    2为弹性悬臂    3为位移传感器    4，5为限位装置
图2为接尿桶图
6为接尿桶本体    7为凸形多孔引尿弧面    8为导流管
图3为弹性悬臂图
9为接尿弧面    10为挡尿片
图4为限位装置图
图5为信号处理系统框图
结合附图，说明实施例如下：
冲量法尿流仪由传感系统和信号处理系统两部分组成，传感系统的工作情况如下：
尿液进入接尿桶（1）后，与凸形多孔引尿弧面（7）接触，尿液被分散沿导流管（8）流下。尿液流出导流管（8）后，冲击弹性悬臂（2）的接尿面（9），使弹性悬臂（2）产生位移，其位移量由位移传感器（3）测出并转换成电信号，该电信号输出至信号处理系统进行处理。限位装置（4，5）可防止因冲洗仪器时因液体流量过大而使弹性悬臂产生过大的位移及避免产生自激振荡。接尿桶和限位装置可用硬塑料制成。弹性悬臂用铍青铜。挡尿片（10）可用不锈钢等耐腐金属片。
信号处理系统的工作情况如下：
尿流仪最终输出的数据有七个，即最大尿流率Rmax，平均尿流率 P，排尿总量V，排尿总时间T总，尿流总时间T流，（整个排尿时间内不是始终有尿流，可能产生间歇排尿）出现最大尿流率的时间TRmax。
信号处理系统由整形、放大电路、A/D转换电路，微处理机和打印机组成。由位移传感器（3）输出的电压信号与排尿过程中的瞬时尿流率Ri成正比。所以信号处理系统就对位移传感器的电压信号进行采样，经过整形、放大、A/D转换后由微机进行各项运算，最后得出上述七项数据打印输出。其过程见图5信号处理系统框图。
对信号处理框图（图5）简述如下：
当尿流使弹性悬臂产生位移后，位移传感器即发出电压信号，此时信号处理系统即按一定的时间间隔开始采样，并记时，每次采样可得一瞬时尿流率（Ri），并将其数值存入存贮器中，同时又不断将采样结果进行比较，以求得最大尿流率（Rmax）值，并记下最大尿流率Rmax值出现时的时间TRmax，当排尿结束后，即停止采样，对所存数据进行处理，对全部瞬时尿流率求和，以求得平均尿流率，R＝ (∑Ri)/(n) n为采样次数，同时按V＝∫Ri dt以积分法求出排尿总量，从开始采样到停止采样的时间定出排尿总时间T总，再将采样中Ri＝0的时间求和，得尿流停止时间To将T总，To求差得尿流总时间T流。
本实用新型的尿流仪由于采用了冲量法来测尿流率，能反映排尿的动态过程，所以灵敏度高，性能稳定。

Claims (3)

1、一种测定尿流的方法，其特征是用冲量来测定尿流的动态特性，即尿流以一定的速度冲击一弹性悬臂，使其产生位移，由位移传感器测出位移量，并将位移量转换成电信号，将该信号经整形、放大、A/D转换，微机处理后可打印出动态的尿流曲线。
2、一种由传感系统，信号处理系统组成的尿流测定仪，其特征是传感系统由接尿桶（1）、弹性悬臂（2）、位移传感器（3）、限位装置（4，5）所组成。
3、按权利要求2所说的尿流测定仪，其特征是接尿桶（1）有一凸形多孔引尿弧面（7）。
CN89102163A 1989-04-14 1989-04-14 冲量法测定尿流的方法及仪器 Pending CN1046386A (zh)

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CN89102163A CN1046386A (zh) 1989-04-14 1989-04-14 冲量法测定尿流的方法及仪器
US07/521,825 US5078012A (en) 1989-04-14 1990-05-10 Momentum method for measuring uroflow parameters and the uroflow flowmeter

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DE19751111C2 (de) * 1997-11-18 2000-02-10 Fmw Irrevocable Trust Naples Vorrichtung zur Messung der Harnströmung
KR20030097305A (ko) * 2002-06-20 2003-12-31 남 국 김 배뇨측정시스템
US6904809B1 (en) * 2004-04-30 2005-06-14 Medtronic, Inc. Magnetic flowmeter with integral liquid trap
US6931943B1 (en) 2004-04-30 2005-08-23 Medtronic, Inc. Permanent magnet flowmeter with noncircular sensing passage
US7416542B2 (en) * 2004-04-30 2008-08-26 Medtronic, Inc. Open circuit gravity-assisted uroflowmeter
US7691092B2 (en) * 2004-05-07 2010-04-06 Mcgill University Ambulatory device for measuring urine flow
KR100810069B1 (ko) 2006-06-21 2008-03-04 부산대학교 산학협력단 요량 및 요속 측정용 센서 및 그를 사용한 요량 및 요속의측정시스템
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US7758519B2 (en) * 2006-09-08 2010-07-20 University Of Vermont And State Agriculture College Systems for and methods of assessing lower urinary tract function via sound analysis
US8544341B2 (en) 2009-06-11 2013-10-01 Ernest W. Grumbles Device including an accelerometer in a watertight container for sensing a urine stream
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US8276465B2 (en) 2010-06-10 2012-10-02 Edward Belotserkovsky Urine flow monitoring device and method
ES2688096T3 (es) 2011-08-29 2018-10-30 Wiest Uropower Ltd. Procedimiento y dispositivo para medir el flujo urinario
DE102014008760B4 (de) 2013-07-16 2019-03-21 Simone Beck-Gschaidmeier Harnflussmessgerät
US20150205304A1 (en) * 2013-12-19 2015-07-23 Flometrix Flow Monitor and Regulator
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