JPS6417629A - Blood flow rate measuring apparatus - Google Patents
Blood flow rate measuring apparatusInfo
- Publication number
- JPS6417629A JPS6417629A JP62173641A JP17364187A JPS6417629A JP S6417629 A JPS6417629 A JP S6417629A JP 62173641 A JP62173641 A JP 62173641A JP 17364187 A JP17364187 A JP 17364187A JP S6417629 A JPS6417629 A JP S6417629A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- injection
- measured value
- blood
- injection liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
PURPOSE:To measure a blood flow rate in a state near to a continuous monitor and to reduce a measuring error due to the irregularity of the injection speed of an injection liquid, by digitalizing the temp. measured value of the injection liquid and the measured value of the temp. of blood due to the temp. measuring element in a catheter before processing and displaying or recording the calculated blood amount. CONSTITUTION:An injection liquid 7 cooled to predetermined temp. enters a quantitative constant speed injection apparatus 45 to be guided to a catheter 2 and injected in the body from a cooling water injection orifice 14 provided to a predetermined region through a cooling water supply lumen 17. The temp. measured value of the injection liquid due to a thermistor 49 and the temp. measured value of blood due to a thermistor 8 are together taken out by thermistor conductors 50, 51. At this time, a bridge circuit converting the change of electric resistance to a current, a signal amplifying circuit and an automatic zero control circuit compensating a drift with the elaspe of time are provided and the signals from the thermistors 49, 8 are digitalized by an A/D converter 32 to be processed by a CPU 35. Signals showing a blood amount, the temp. of the injection liquid and an injection amount are inputted to a display apparatus 36 from the CPU 35 to automatically perform predetermined display.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62173641A JPS6417629A (en) | 1987-07-10 | 1987-07-10 | Blood flow rate measuring apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62173641A JPS6417629A (en) | 1987-07-10 | 1987-07-10 | Blood flow rate measuring apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6417629A true JPS6417629A (en) | 1989-01-20 |
Family
ID=15964376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62173641A Pending JPS6417629A (en) | 1987-07-10 | 1987-07-10 | Blood flow rate measuring apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6417629A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03176029A (en) * | 1989-09-14 | 1991-07-31 | Terumo Corp | Catheter for measuring cardiac output |
JPH05184549A (en) * | 1991-07-01 | 1993-07-27 | Boc Health Care Inc | Heat diluting injection solution device provided with filter |
JPH0575742U (en) * | 1992-03-23 | 1993-10-15 | ホシデン株式会社 | Liquid crystal resistivity monitor in liquid crystal injection device |
JP2011521753A (en) * | 2008-06-04 | 2011-07-28 | エドワーズ ライフサイエンシーズ アイピーアールエム アーゲー | Apparatus for determining blood volume and / or blood volume flow and method of operating the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5047480A (en) * | 1973-02-09 | 1975-04-26 |
-
1987
- 1987-07-10 JP JP62173641A patent/JPS6417629A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5047480A (en) * | 1973-02-09 | 1975-04-26 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03176029A (en) * | 1989-09-14 | 1991-07-31 | Terumo Corp | Catheter for measuring cardiac output |
JPH05184549A (en) * | 1991-07-01 | 1993-07-27 | Boc Health Care Inc | Heat diluting injection solution device provided with filter |
JPH0575742U (en) * | 1992-03-23 | 1993-10-15 | ホシデン株式会社 | Liquid crystal resistivity monitor in liquid crystal injection device |
JP2011521753A (en) * | 2008-06-04 | 2011-07-28 | エドワーズ ライフサイエンシーズ アイピーアールエム アーゲー | Apparatus for determining blood volume and / or blood volume flow and method of operating the same |
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