1999 Fiscal Year Final Research Report Summary
Development of a Blood Pressure Control System for Wide Use
| Project/Area Number |
10555143
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Control engineering
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
ARAKI Mituhiko Kyoto University, Graduate School of Engineering, Professor, 工学研究科, 教授 (60026226)
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| Co-Investigator(Kenkyū-buntansha) |
ONODERA Hisashi Kyoto University, Graduate School of Medicine, Lecturer, 医学研究科, 講師 (50240825)
MAETANI Shunzo Tenri Institute of Medical Research, Vice Director, 副所長 (10115933)
FURUTANI Eiko Kyoto University, Graduate School of Engineering, Lecturer, 工学研究科, 講師 (40219118)
IMAI Yutaka Shimadzu Corporation, Research & De-velopment Department Medical Systems Division, Manager, 医用技術部, 課長
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| Project Period (FY) |
1998 – 1999
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| Keywords | Blood pressure control / Hypotensive anesthesia / Trimethaphan / Risk control / Fuzzy inference / State-predictive control |
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| Research Abstract |
In this research, we have improved our blood pressure control system for hypotensive anesthesia so that it can be used widely. To be concrete, we have made 1) improvement of risk control algorithm, 2) modification of the auto-tuning function for individual difference, and 3) modification of the system structure and interface. The obtained results are as follows.
As new risk control functions, we added i) an algorithm for blood transfusion, i. e. transfusion of plasma protein fraction (PPF), concentrated red cell (CRC) and fresh frozen plasma (FFP), and ii) a function for determination of the maximal infusion rate of the hypotensive drug. By adding these functions, the safety of our system is improved.
We modified the auto-tuning algorithm of the controller gain, which became inappropriate by the modification of risk control algorithm. By this modification, the controller gain can be changed small enough when the blood pressure is lower than the target blood pressure, and then the performance and the safety of our system are improved.
A note-type personal computer is used to make the system smaller. Moreover, the interface for the command input is changed from keyboard to mouse in order to input command easily. Furthermore, a function of judging whether the input value is appropriate or not is added. By these modifications, our system can be easily used in usual operation rooms by medical doctors.
Our modifications of the blood pressure control system achieve the purpose in safety and usability.
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Research Products
(2 results)
