权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Development of a device for measuring tidal volume ambulatorily withouto calibration using optical fibers

开发一种无需光纤校准即可移动测量潮气量的装置

基本信息

批准号：
06680847
负责人：
NOSHIRO Makoto
金额：
$ 1.41万
依托单位：
Kitasato University (1995)Tokyo Medical and Dental University (1994)
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06680847/
关键词：
Tidal Volume Ambulatory Monitoring Optical Fiber Curvature Plethysmograph

项目摘要

Although a flowmeter gives accurate tidal volume, it requires a facemask which makes a subject uncomfortable and even affects breathing pattern in the subject. Measurements using any methods other than the flowmeter must be calibrated by the flowmeter in each subject. To dispense with the facemask and calibration, we developed a new method which measures the change in the body trunk volume, because it is established that the change in the body trunk is equal to that in the lung volume.A curvature sensor using an optical fiber was developed to yield a cross-sectional area of the body trunk. The shapes of two cross sections were reconstructed from 20 curvature sensors, to produce the area. Other two cross-sectional areas were estimated based on the relation between an area and a circumference length. The four cross-sectional areas and the three distances between them gave the body trunk volume related to respiration. Circumference lengths and distances were measured by length sensors which we also developed using optical fibers.The change in the lung volume was measured by a hot-wire flowmeter in six subjects, and the change in the body trunk was simultaneously measured by our method. The relation between two measured change was linear without much scattering, and the slope of the regression line between them ranged from 0.8 to 1.2.

尽管流量计可以提供准确的潮气量，但它需要戴口罩，这会让受试者感到不舒服，甚至影响受试者的呼吸模式。使用流量计以外的任何方法进行的测量必须由每个受试者的流量计进行校准。为了免除面罩和校准，我们开发了一种新的方法来测量身体躯干体积的变化，因为它建立了身体躯干的变化等于肺体积的变化。从20个曲率传感器重建两个横截面的形状，以产生面积。另外两个横截面积是根据面积和周长之间的关系估计的。四个横截面积和它们之间的三个距离给出了与呼吸相关的躯干体积。周长和距离测量的长度传感器，我们也开发了使用光纤。在肺容量的变化，在6个科目，用热线流量计测量，并在身体躯干的变化，同时用我们的方法测量。两个测量变化之间的关系是线性的，没有太多的散射，它们之间的回归线的斜率范围为0.8至1.2。