• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1991 Fiscal Year Final Research Report Summary

On a Circulation System Monitor of HD Patient to Realize a Safe High Efficiency Dialysis (1992)

Research Project

Project/Area Number 02452176
Research Category

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

Allocation TypeSingle-year Grants
Research Field 計測・制御工学
Research InstitutionUniversity of Tsukuba

Principal Investigator

OHTA Michio  Univ. Tsukuba Professor, 構造工学系, 教授 (10016446)

Co-Investigator(Kenkyū-buntansha) SANKAI Yosiyuki  Univ. Tsukuba Professor, 構造工学系, 講師 (30183833)
MATUSIMA Kozo  Univ. Tsukuba Professor, 構造工学系, 教授 (20016786)
Project Period (FY) 1990 – 1991
KeywordsHemodialysys / Patients Monitor / Pressure Drop / High Efficiency / Hematocrit / Blood Volume / Blood Pressure / Continuous Measurement
Research Abstract

To realize a safe but high efficiency hemodialysis, it is inevitable to know the patient state to avoid pressure drops due to the rapid water removal. Mainly two monitor systems were developed in this research projects. One is a continuous blood volume and. oxigen saturation monitor which measures continuously. For this sistem a couple of laser photodetecting circuit including the beams of 756 and 805 nn. 805 nm beam is known to be insensitive to oxigen saturation degree of hemoglobin, which in tern measures the so called heamatocrit. From the heamatocrit relative blood volume shall be calculated continuously. 756 beam is sensitive to the oxigen saturation so as to measure the saturation degree with the conbination of of 805 beam data.
Continuous measurement of blood pressure is the other of urgent problem whi we encountered in this research, because of sudden pressure drops in hemodialysis patients. Based on analysis with an electric equivalent circuit of blood circulation system, a new approach has been developed here. The result of analysis gave a simple relation between pressure measured at dialysis circuit and the brachial pressure. To put this result into a clinical use, a new dialysis circuit vas designed, which include an additional air-trap.
The clinical test were fairly acceptable in usefulness and noninvasive.

  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] Y.SANKAI: "Therapeutic Robot System aimed at Human Oriented System" Proc.of IEEE International Workshop on Intelligent Motion Control. 1. 247-251 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.SANKAI: "Artificial Kidney Control System Based on Cybernics Conception" Artificial Organs. 14(3). 291-295 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 山海 嘉之: "透析中のシャント部血圧の連続計測法" 日本透析療法学会誌. 24(3). 327-331 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 太田 道男: "透析回路の圧力に基づく上腕平均血圧の連続計測法" 日本透析療法学会誌. 24(11). 1489-1493 (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 太田 道男: "人工腎臓における"ながれ"の諸問題" ながれ. 11ー1. 3-13 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y. SANKAI: "Therapeutic Robot System aimed at Human Oriented System" Proc. of IEEE International Workshop on Intelligent Motion controlProc. IEEE International Workshop on Intelligent Motion Control. 1. 247-251 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. SANKAI: "Artificial Kidney Control System Based on Cybernics Conception" Artificial Organs. 14-3. 291/295 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Sankai: "Continuous Measurement of Shant Blood Pressure during Hemodialysis" J. Japanese Soc. for Dialysis Therapy. 24-3. 327/331 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] M. Ohta: "Continuous Measurement of Brachial Blood Pressure based on Dialysis Circuit Pressure During Hemodialysis" J. Japanese Soc. for Dialysis Therapy. 24-11. 1489/1493 (1991)

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 1993-03-16  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi