JPWO2015125289A1 - 熱線流速計およびそれを用いた血流速計 - Google Patents
熱線流速計およびそれを用いた血流速計 Download PDFInfo
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- JPWO2015125289A1 JPWO2015125289A1 JP2016503889A JP2016503889A JPWO2015125289A1 JP WO2015125289 A1 JPWO2015125289 A1 JP WO2015125289A1 JP 2016503889 A JP2016503889 A JP 2016503889A JP 2016503889 A JP2016503889 A JP 2016503889A JP WO2015125289 A1 JPWO2015125289 A1 JP WO2015125289A1
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- 239000008280 blood Substances 0.000 title description 8
- 210000004369 blood Anatomy 0.000 title description 8
- 239000000523 sample Substances 0.000 claims abstract description 34
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 230000017531 blood circulation Effects 0.000 claims description 49
- 210000004204 blood vessel Anatomy 0.000 claims description 15
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/026—Measuring blood flow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
- A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
- A61B5/6852—Catheters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
- G01F1/688—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element
- G01F1/69—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element of resistive type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/696—Circuits therefor, e.g. constant-current flow meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables
- G01P5/12—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables using variation of resistance of a heated conductor
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Medical Informatics (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Fluid Mechanics (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Hematology (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physiology (AREA)
- Cardiology (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
Description
前記抵抗ブリッジの同一極側の2つの抵抗のうちの他の一つを、前記先端に熱線を繋いだ配線ケーブルに沿わせてその熱線の近くまで延在させた、先端を回路的に閉じた配線ケーブルを含むものとしたことを特徴とするものである。
前記抵抗ブリッジの同一極側の2つの抵抗のうちの他の一つを、前記先端に熱線を繋いだ配線ケーブルに沿わせてその熱線の近くまで延在させた、先端を回路的に閉じた配線ケーブルを含むものとし、
血管内に挿入されるスリーブ内に前記先端に熱線を繋いだ配線ケーブルと前記先端を閉じた配線ケーブルとを収容するとともに前記熱線をそのスリーブの先端部に絶縁状態で配置してカテーテル型プローブを構成したことを特徴とするものである。
CN コネクター
FL 流れ方向
HW 熱線
MB 本体
P プローブ
R1〜R4 抵抗
R3’,R4’ 補助抵抗
S スリーブ
TC テフロンコーティング
TW チタン線
Claims (4)
- 抵抗ブリッジの同一極側の2つの抵抗のうちの一つを、先端に熱線を繋いだ配線ケーブルを含むものとし、その熱線を流れ方向と交差する方向に延在させて流体内に配置して通電により発熱させ、流体の流速に比例した熱線の冷却による抵抗変化を計測することで流体の流速を測定する熱線流速計において、
前記抵抗ブリッジの同一極側の2つの抵抗のうちの他の一つを、前記先端に熱線を繋いだ配線ケーブルに沿わせてその熱線の近くまで延在させた、先端を回路的に閉じた配線ケーブルを含むものとしたことを特徴とする熱線流速計。 - 抵抗ブリッジの同一極側の2つの抵抗のうちの一つを、先端に熱線を繋いだ配線ケーブルを含むものとし、その熱線を流れ方向と交差する方向に延在させて血流内に配置して通電により発熱させ、血流速に比例した熱線の冷却による抵抗変化を計測することで血流速を測定する血流速計において、
前記抵抗ブリッジの同一極側の2つの抵抗のうちの他の一つを、前記先端に熱線を繋いだ配線ケーブルに沿わせてその熱線の近くまで延在させた、先端を回路的に閉じた配線ケーブルを含むものとし、
血管内に挿入されるスリーブ内に前記先端に熱線を繋いだ配線ケーブルと前記先端を閉じた配線ケーブルとを収容するとともに前記熱線をそのスリーブの先端部に絶縁状態で配置してカテーテル型プローブを構成したことを特徴とする血流速計。 - 前記配線ケーブルは、ツイスト線であることを特徴とする請求項1または2記載の血流速計。
- 前記配線ケーブルは、フッ素樹脂のコーティングを施したチタン線であることを特徴とする請求項1または2記載の血流速計。
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Application Number | Priority Date | Filing Date | Title |
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PCT/JP2014/054260 WO2015125289A1 (ja) | 2014-02-24 | 2014-02-24 | 熱線流速計およびそれを用いた血流速計 |
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JPWO2015125289A1 true JPWO2015125289A1 (ja) | 2017-03-30 |
JP6332655B2 JP6332655B2 (ja) | 2018-05-30 |
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JP2016503889A Active JP6332655B2 (ja) | 2014-02-24 | 2014-02-24 | 熱線流速計およびそれを用いた血流速計 |
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JP (1) | JP6332655B2 (ja) |
WO (1) | WO2015125289A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6523427B2 (ja) | 2014-04-04 | 2019-05-29 | セント.ジュード メディカル システムズ アーベーSt.Jude Medical Systems Ab | 血管内圧力及び流量データ診断のシステム、装置、及び方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07313475A (ja) * | 1994-05-30 | 1995-12-05 | Terumo Corp | 流速センサプローブ |
JPH10251003A (ja) * | 1997-03-12 | 1998-09-22 | Tanaka Kikinzoku Kogyo Kk | オゾン発生器用電極リード線及びその製造方法 |
JP2000329599A (ja) * | 1999-03-16 | 2000-11-30 | Kurabe Ind Co Ltd | 熱式流速計 |
JP2005510312A (ja) * | 2001-11-29 | 2005-04-21 | インパルス ダイナミックス エヌブイ | 膵臓の電気的活動度を検出する方法及び装置 |
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2014
- 2014-02-24 JP JP2016503889A patent/JP6332655B2/ja active Active
- 2014-02-24 WO PCT/JP2014/054260 patent/WO2015125289A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07313475A (ja) * | 1994-05-30 | 1995-12-05 | Terumo Corp | 流速センサプローブ |
JPH10251003A (ja) * | 1997-03-12 | 1998-09-22 | Tanaka Kikinzoku Kogyo Kk | オゾン発生器用電極リード線及びその製造方法 |
JP2000329599A (ja) * | 1999-03-16 | 2000-11-30 | Kurabe Ind Co Ltd | 熱式流速計 |
JP2005510312A (ja) * | 2001-11-29 | 2005-04-21 | インパルス ダイナミックス エヌブイ | 膵臓の電気的活動度を検出する方法及び装置 |
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WO2015125289A1 (ja) | 2015-08-27 |
JP6332655B2 (ja) | 2018-05-30 |
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