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

Research Project

Project/Area Number 06680847
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Biomedical engineering/Biological material science
Research InstitutionKitasato University (1995)
Tokyo Medical and Dental University (1994)

Principal Investigator

NOSHIRO Makoto  Kitasato University, Fac.of Allied Health Sci., Professor, 医療衛生学部, 教授 (80014231)

Co-Investigator(Kenkyū-buntansha) FUKUOKA Yutaka  Tokyo Med.Dent.Univ., Inst.Med.Dent.Engng., Instructor, 医用器材研究所, 助手 (30242217)
NEBUYA Satoru  Kitasato University, Fac.of Allied Health Sci., Instructor, 医療衛生部, 助手 (00276180)
宮崎 信次  東京医科歯科大学, 医用器材研究所, 助手 (10014284)
石田 明充  東京医科歯科大学, 医用器材研究所, 教授 (60016540)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1995: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1994: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsTidal Volume / Ambulatory Monitoring / Optical Fiber / Curvature / Plethysmograph
Research Abstract

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.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 後藤英二: "光ファイバによる曲率センサを用いた一回換気量の計測" 医用電子と生体工学. 32巻特別号. 197- (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 後藤英二: "光ファイバを用いた校正を必要としない一回換気量計測" 医用電子と生体工学. 33巻特別号. 345- (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Eiji Goto: "Ambulatory non-calibration measurement of tidal volume using optical fiber sensors" PRoc. 17th Annu. Conf. IEEE EMBS Soc.CD-ROM. 4.3.3.18 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 後藤英二: "光ファイバセンサによる無拘束無校正一回換気量測定" 31(掲載決定). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 後藤英二: "光ファイバを用いた校正を必要としない一回換気量計測" 医用電子と生体工学. 特別号. 345- (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Eiji Goto: "Ambulatory non-calibration measurement of tidal volume using optical fiber sensors" Proc.17th Annu.Conf.IEEE EMBS Soc.CD-ROM 4.3.3.18 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 後藤 英二: "光ファイバセンサによる無拘束無校正一回換気量測定" 計測自動制御学会論文集. 31(掲載決定). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 後藤英二: "光ファイバによる曲率センサを用いた一回換気量の計測" 医用電子と生体工学. 特別号. 197 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 後藤英二: "光ファイバを用いた校正を必要としない一回換気量計測" 医用電子と生体工学. 特別号(予定). (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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