JP4409878B2 - 圧力パルスデューティサイクルを使用して血圧を判定する方法及び装置 - Google Patents
圧力パルスデューティサイクルを使用して血圧を判定する方法及び装置 Download PDFInfo
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- JP4409878B2 JP4409878B2 JP2003282327A JP2003282327A JP4409878B2 JP 4409878 B2 JP4409878 B2 JP 4409878B2 JP 2003282327 A JP2003282327 A JP 2003282327A JP 2003282327 A JP2003282327 A JP 2003282327A JP 4409878 B2 JP4409878 B2 JP 4409878B2
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- 230000036772 blood pressure Effects 0.000 title claims description 81
- 238000000034 method Methods 0.000 title description 53
- 230000035488 systolic blood pressure Effects 0.000 claims description 22
- 230000035487 diastolic blood pressure Effects 0.000 claims description 15
- 238000004590 computer program Methods 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 7
- 238000004422 calculation algorithm Methods 0.000 claims description 6
- 230000004872 arterial blood pressure Effects 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000012897 Levenberg–Marquardt algorithm Methods 0.000 claims description 2
- 210000001367 artery Anatomy 0.000 description 15
- 238000009530 blood pressure measurement Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 11
- 230000008602 contraction Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 230000035485 pulse pressure Effects 0.000 description 5
- 238000002555 auscultation Methods 0.000 description 4
- 210000002302 brachial artery Anatomy 0.000 description 4
- 230000000747 cardiac effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 239000008280 blood Substances 0.000 description 3
- 210000004369 blood Anatomy 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 208000001953 Hypotension Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000003205 diastolic effect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036543 hypotension Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 208000012866 low blood pressure Diseases 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical group [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
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Classifications
-
- 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
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
- A61B5/02225—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers using the oscillometric method
-
- 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
- A61B5/021—Measuring pressure in heart or blood vessels
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
-
- 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
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Cardiology (AREA)
- Physics & Mathematics (AREA)
- Vascular Medicine (AREA)
- Medical Informatics (AREA)
- Heart & Thoracic Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Physiology (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Theoretical Computer Science (AREA)
- Ophthalmology & Optometry (AREA)
- Data Mining & Analysis (AREA)
- General Physics & Mathematics (AREA)
- Databases & Information Systems (AREA)
- Mathematical Physics (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Description
デューティサイクル方式のもう1つの利点は、患者の腕の周囲にカフをゆるやかに装着した状態から拡張期圧が最初に検出されるまでカフ圧力を徐々に増加させるように、測定プロセスを反転させても差し支えないということである。その後、MAPが検出されるまで圧力を増加させ、更に、収縮期圧が最終的に検出されるまで圧力を増加させる。収縮期圧が検出されたならば、それ以上の圧力を加える必要はなく、そのため、患者に不快感を与える心配が少なくなる。
Claims (10)
- 被検体の血圧を獲得する装置(10)において、
被検体の腕(100)に装着されるべき膨張及び収縮自在の圧力カフ(101)と、
前記圧力カフ(101)を膨張させ且つ加圧する膨張装置(109)、(111)と、
前記カフ(101)から選択的に圧力を解放する収縮装置(102)と、
前記カフ(101)に結合され、被検体の腕(100)の内部の血圧パルスにより発生されるパルス血圧データを複数のカフ圧力レベルで感知する圧力感知装置(104)と、
前記複数のカフ圧力レベルで、血圧パルスの持続時間を血圧パルス周期で除算した値として定義されるデューティサイクルを判定することにより、前記パルス血圧データを処理するマイクロプロセッサ(107)とを具備し、
前記マイクロプロセッサ(107)は、前記デューティサイクルが0と第1の指定百分率との間にあるときに収縮期圧を識別し、前記デューティサイクルが約100%であるときに拡張期圧を識別する装置。 - 前記マイクロプロセッサ(107)は、前記デューティサイクルが約50%±第2の指定百分率であるときに平均動脈血圧(MAP)を更に識別する請求項1記載の装置(10)。
- 前記マイクロプロセッサ(107)は、血圧パルスデータに曲線当てはめアルゴリズムを適用することにより、前記血圧パルス周期のパルス部分と、前記血圧パルス周期の平坦部分とを判定することによって、前記血圧パルス周期内における血圧パルスの持続時間を識別する請求項2記載の装置(10)。
- 前記曲線当てはめアルゴリズムはLevenberg−Marquardtアルゴリズムである請求項3記載の装置(10)。
- 前記カフ(101)は、当初、被検体の推定収縮期圧を上回るカフ圧力まで膨張され(302)、
前記カフ圧力は、前記収縮期圧が識別される(312)まで徐々に低下され(310)、
前記カフ圧力は、前記MAPが識別される(324)まで更に徐々に低下され(332)、且つ
前記カフ圧力は、前記拡張期圧が識別される(334)まで更に徐々に低下される(334)請求項1乃至4のいずれかに記載の装置(10)。 - 前記カフ(101)は、当初、被検体の推定拡張期圧より低いカフ圧力まで膨張され、
前記カフ圧力は、前記拡張期圧が識別されるまで徐々に増加され、
前記カフ圧力は、前記MAPが識別されるまで更に徐々に増加され、且つ
前記カフ圧力は、前記収縮期圧が識別されるまで更に徐々に増加される請求項1乃至4のいずれかに記載の装置(10)。 - 被検体から取り出されたオシロメトリー血圧パルスデータを処理するための機械読み取り可能なコンピュータプログラムであって、
コンピュータに、
被検体の心臓サイクルの血圧パルス周期を判定することと、
前記血圧パルス周期の中で検出された血圧パルスの持続時間を複数のカフ圧力レベルで識別することと、
前記複数のカフ圧力レベルで、血圧パルスの持続時間を血圧パルス周期で除算した値として定義されるデューティサイクルを計算することと、
前記デューティサイクルが0と第1の指定百分率との間にあるときに収縮期圧を識別することと、
前記デューティサイクルが約100%であるときに拡張期圧を更に識別することを実行させるコンピュータログラム。 - 前記コンピュータに、
前記デューティサイクルが約50%±第2の指定百分率であるときに平均動脈血圧(MAP)を識別すること(324)を更に実行させる請求項7記載のコンピュータログラム。 - 前記血圧パルス周期の中で検出された血圧パルスの持続時間を識別することは、血圧パルスデータに曲線当てはめアルゴリズムを適用すること(306)、(318)、(328)により、前記血圧パルス周期のパルス部分と、前記血圧パルス周期の平坦部分とを判定することから成る請求項7または8記載のコンピュータログラム。
- 請求項7乃至9のいずれかに記載のコンピュータログラムを記録したコンピュータ読み取り可能な記録媒体。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/064,622 US6767328B2 (en) | 2002-07-31 | 2002-07-31 | Method and apparatus for determining blood pressure using pressure pulse duty cycle |
Publications (3)
Publication Number | Publication Date |
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JP2004065974A JP2004065974A (ja) | 2004-03-04 |
JP2004065974A5 JP2004065974A5 (ja) | 2006-09-14 |
JP4409878B2 true JP4409878B2 (ja) | 2010-02-03 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2003282327A Expired - Fee Related JP4409878B2 (ja) | 2002-07-31 | 2003-07-30 | 圧力パルスデューティサイクルを使用して血圧を判定する方法及び装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US6767328B2 (ja) |
JP (1) | JP4409878B2 (ja) |
CN (1) | CN100411581C (ja) |
DE (1) | DE10334807A1 (ja) |
GB (1) | GB2391632B (ja) |
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CN1296008C (zh) * | 2004-09-07 | 2007-01-24 | 深圳迈瑞生物医疗电子股份有限公司 | 一种非线性拟合恢复振荡脉搏波趋势包络的方法 |
US20080033307A1 (en) * | 2006-07-24 | 2008-02-07 | Baudoin Jody A | Intermittent pneumatic compression device with non-invasive blood pressure monitoring |
US8660799B2 (en) | 2008-06-30 | 2014-02-25 | Nellcor Puritan Bennett Ireland | Processing and detecting baseline changes in signals |
US8398556B2 (en) | 2008-06-30 | 2013-03-19 | Covidien Lp | Systems and methods for non-invasive continuous blood pressure determination |
US20090326386A1 (en) * | 2008-06-30 | 2009-12-31 | Nellcor Puritan Bennett Ireland | Systems and Methods for Non-Invasive Blood Pressure Monitoring |
US8506498B2 (en) | 2008-07-15 | 2013-08-13 | Nellcor Puritan Bennett Ireland | Systems and methods using induced perturbation to determine physiological parameters |
US9687161B2 (en) | 2008-09-30 | 2017-06-27 | Nellcor Puritan Bennett Ireland | Systems and methods for maintaining blood pressure monitor calibration |
US9314168B2 (en) * | 2008-09-30 | 2016-04-19 | Nellcor Puritan Bennett Ireland | Detecting sleep events using localized blood pressure changes |
US8532751B2 (en) | 2008-09-30 | 2013-09-10 | Covidien Lp | Laser self-mixing sensors for biological sensing |
US9301697B2 (en) | 2008-09-30 | 2016-04-05 | Nellcor Puritan Bennett Ireland | Systems and methods for recalibrating a non-invasive blood pressure monitor |
US8216136B2 (en) | 2009-03-05 | 2012-07-10 | Nellcor Puritan Bennett Llc | Systems and methods for monitoring heart rate and blood pressure correlation |
WO2011005538A2 (en) * | 2009-06-23 | 2011-01-13 | Boris Leschinsky | Methods and devices for remote ischemic preconditioning and near-continuous blood pressure monitoring |
US9198582B2 (en) | 2009-06-30 | 2015-12-01 | Nellcor Puritan Bennett Ireland | Determining a characteristic physiological parameter |
US8290730B2 (en) | 2009-06-30 | 2012-10-16 | Nellcor Puritan Bennett Ireland | Systems and methods for assessing measurements in physiological monitoring devices |
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US8628477B2 (en) | 2009-07-31 | 2014-01-14 | Nellcor Puritan Bennett Ireland | Systems and methods for non-invasive determination of blood pressure |
US9220440B2 (en) * | 2009-09-21 | 2015-12-29 | Nellcor Puritan Bennett Ireland | Determining a characteristic respiration rate |
US9066660B2 (en) | 2009-09-29 | 2015-06-30 | Nellcor Puritan Bennett Ireland | Systems and methods for high-pass filtering a photoplethysmograph signal |
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JP5536586B2 (ja) * | 2010-08-17 | 2014-07-02 | 日本光電工業株式会社 | 血圧測定装置 |
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US9259160B2 (en) | 2010-12-01 | 2016-02-16 | Nellcor Puritan Bennett Ireland | Systems and methods for determining when to measure a physiological parameter |
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-
2002
- 2002-07-31 US US10/064,622 patent/US6767328B2/en not_active Expired - Lifetime
-
2003
- 2003-07-30 DE DE10334807A patent/DE10334807A1/de not_active Withdrawn
- 2003-07-30 JP JP2003282327A patent/JP4409878B2/ja not_active Expired - Fee Related
- 2003-07-31 GB GB0317972A patent/GB2391632B/en not_active Expired - Fee Related
- 2003-07-31 CN CNB031522327A patent/CN100411581C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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GB2391632B (en) | 2006-11-29 |
US6767328B2 (en) | 2004-07-27 |
JP2004065974A (ja) | 2004-03-04 |
GB2391632A (en) | 2004-02-11 |
CN1475191A (zh) | 2004-02-18 |
CN100411581C (zh) | 2008-08-20 |
US20040024323A1 (en) | 2004-02-05 |
GB0317972D0 (en) | 2003-09-03 |
DE10334807A1 (de) | 2004-03-11 |
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