NO133573B - - Google Patents
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- Publication number
- NO133573B NO133573B NO2847/71A NO284771A NO133573B NO 133573 B NO133573 B NO 133573B NO 2847/71 A NO2847/71 A NO 2847/71A NO 284771 A NO284771 A NO 284771A NO 133573 B NO133573 B NO 133573B
- Authority
- NO
- Norway
- Prior art keywords
- magnetic field
- blood flow
- signal
- amplifier
- polarity
- Prior art date
Links
- 230000017531 blood circulation Effects 0.000 claims description 73
- 238000005259 measurement Methods 0.000 claims description 41
- 210000004204 blood vessel Anatomy 0.000 claims description 15
- 230000000747 cardiac effect Effects 0.000 claims description 15
- 238000012935 Averaging Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 210000000056 organ Anatomy 0.000 claims description 4
- 230000000541 pulsatile effect Effects 0.000 claims 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims 1
- 229910001296 Malleable iron Inorganic materials 0.000 claims 1
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 210000001367 artery Anatomy 0.000 description 45
- 239000003990 capacitor Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 230000002441 reversible effect Effects 0.000 description 9
- 210000001715 carotid artery Anatomy 0.000 description 8
- 230000008859 change Effects 0.000 description 8
- 210000001105 femoral artery Anatomy 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000005415 magnetization Effects 0.000 description 5
- 239000008280 blood Substances 0.000 description 4
- 210000004369 blood Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- ZCJJIQHVZCFSGZ-UHFFFAOYSA-N 2,8-bis(diphenylphosphoryl)dibenzothiophene Chemical compound C=1C=CC=CC=1P(C=1C=C2C3=CC(=CC=C3SC2=CC=1)P(=O)(C=1C=CC=CC=1)C=1C=CC=CC=1)(=O)C1=CC=CC=C1 ZCJJIQHVZCFSGZ-UHFFFAOYSA-N 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000032544 Cicatrix Diseases 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 241000826860 Trapezium Species 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- GTKRFUAGOKINCA-UHFFFAOYSA-M chlorosilver;silver Chemical compound [Ag].[Ag]Cl GTKRFUAGOKINCA-UHFFFAOYSA-M 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009730 filament winding Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 230000036512 infertility Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 238000011477 surgical intervention Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
- A61B5/346—Analysis of electrocardiograms
- A61B5/349—Detecting specific parameters of the electrocardiograph cycle
- A61B5/352—Detecting R peaks, e.g. for synchronising diagnostic apparatus; Estimating R-R interval
-
- 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
- A61B5/0265—Measuring blood flow using electromagnetic means, e.g. electromagnetic flowmeter
-
- 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
- G01F1/56—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 electric or magnetic effects
- G01F1/58—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 electric or magnetic effects by electromagnetic flowmeters
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Cardiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Electromagnetism (AREA)
- Hematology (AREA)
- Physiology (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Measuring Volume Flow (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6624070A | 1970-08-24 | 1970-08-24 | |
| US15869771A | 1971-07-01 | 1971-07-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO133573B true NO133573B (nl) | 1976-02-16 |
| NO133573C NO133573C (nl) | 1976-05-26 |
Family
ID=26746524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO2847/71A NO133573C (nl) | 1970-08-24 | 1971-07-28 |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US3759247A (nl) |
| JP (1) | JPS5516659B1 (nl) |
| AT (1) | AT321452B (nl) |
| BE (1) | BE771669A (nl) |
| CA (1) | CA980869A (nl) |
| CH (1) | CH530786A (nl) |
| DE (1) | DE2142211C3 (nl) |
| DK (1) | DK138578B (nl) |
| FR (1) | FR2105939A5 (nl) |
| GB (1) | GB1365129A (nl) |
| IL (1) | IL37407A (nl) |
| NL (1) | NL171016C (nl) |
| NO (1) | NO133573C (nl) |
| SE (1) | SE373278B (nl) |
| SU (1) | SU528853A3 (nl) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3809070A (en) * | 1971-07-01 | 1974-05-07 | Doll Research | Non-invasive electromagnetic bloodflow measuring system with rejection of noises |
| US3994285A (en) * | 1974-12-17 | 1976-11-30 | Doll Research, Inc. | Revolving symmetrical magnet assembly and improved method of blood flow detection |
| US4037585A (en) * | 1975-10-10 | 1977-07-26 | Gildenberg Philip L | Method of measuring blood flow by radiation |
| JPS5927566B2 (ja) * | 1980-07-02 | 1984-07-06 | 日本光電工業株式会社 | 電磁血流計 |
| US4721914A (en) * | 1984-05-01 | 1988-01-26 | The United States Of America As Represented By The United States Department Of Energy | Apparatus for unilateral generation of a homogeneous magnetic field |
| US4676253A (en) * | 1985-07-18 | 1987-06-30 | Doll Medical Research, Inc. | Method and apparatus for noninvasive determination of cardiac output |
| US4727755A (en) * | 1986-12-08 | 1988-03-01 | Fischer & Porter Co. | Electromagnetic flowmeter with alternating permanent magnet field |
| US4993420A (en) * | 1990-03-30 | 1991-02-19 | Rutgers University | Method and apparatus for noninvasive monitoring dynamic cardiac performance |
| EP0518635B1 (en) * | 1991-06-11 | 2003-05-21 | Newt Holdings Limited | Probe |
| US5935077A (en) * | 1997-08-14 | 1999-08-10 | Ogle; John Seldon | Noninvasive blood flow sensor using magnetic field parallel to skin |
| US10155082B2 (en) * | 2002-04-10 | 2018-12-18 | Baxter International Inc. | Enhanced signal detection for access disconnection systems |
| US20040254513A1 (en) | 2002-04-10 | 2004-12-16 | Sherwin Shang | Conductive polymer materials and applications thereof including monitoring and providing effective therapy |
| US7052480B2 (en) | 2002-04-10 | 2006-05-30 | Baxter International Inc. | Access disconnection systems and methods |
| US7022098B2 (en) * | 2002-04-10 | 2006-04-04 | Baxter International Inc. | Access disconnection systems and methods |
| US8114043B2 (en) | 2008-07-25 | 2012-02-14 | Baxter International Inc. | Electromagnetic induction access disconnect sensor |
| DE102015103580A1 (de) * | 2015-03-11 | 2016-09-15 | Endress + Hauser Flowtec Ag | Magnetisch-induktives Durchflussmessgerät mit verringerter Stromaufnahme |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2867119A (en) * | 1954-09-14 | 1959-01-06 | Foxboro Co | Electromagnetic flowmeter |
| FR1151440A (fr) * | 1955-06-17 | 1958-01-30 | Philips Nv | Dispositif pour la mesure de débits |
| US2924213A (en) * | 1958-03-17 | 1960-02-09 | Fleck Henry | Electrical probe |
| US3060923A (en) * | 1959-01-07 | 1962-10-30 | Teca Corp | Coaxial electrode structure and a method of fabricating same |
| DE1272011B (de) * | 1960-12-28 | 1968-07-04 | Foxboro Co | Vorrichtung zur UEbertragung von fuer industrielle Verfahrensablaeufe charakteristischen Signalen, insbesondere fuer magnetische Stroemungsmesser |
| US3184966A (en) * | 1961-07-13 | 1965-05-25 | Avionics Res Products Corp | Electromagnetic flowmeter |
| FR1457269A (fr) * | 1962-11-30 | 1966-01-24 | Procédé de propulsion de corps mobiles ainsi que l'appareil et les corps pour la mise en application dudit procédé ou procédé similaire | |
| US3347224A (en) * | 1964-05-26 | 1967-10-17 | Brandon L Adams | Apparatus and method for measuring cardiac output |
| US3377855A (en) * | 1966-06-29 | 1968-04-16 | Gen Signal Corp | Noise nulling network for magnetic flowmeter |
| DE1673037B2 (de) * | 1967-08-11 | 1974-08-15 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Verfahren und Vorrichtung zur Bestimmung der Verteilung strömender Medien |
| FR2063594A5 (nl) * | 1969-10-23 | 1971-07-09 | Ieram Sarl | |
| FR2087729A5 (nl) * | 1970-05-29 | 1971-12-31 | Ieram Sarl | |
| US3659591A (en) * | 1970-08-24 | 1972-05-02 | Doll Research | Electromagnetic flowmeter |
-
1971
- 1971-07-01 US US00158697A patent/US3759247A/en not_active Expired - Lifetime
- 1971-07-28 IL IL37407A patent/IL37407A/xx unknown
- 1971-07-28 CA CA119,313A patent/CA980869A/en not_active Expired
- 1971-07-28 NO NO2847/71A patent/NO133573C/no unknown
- 1971-08-11 NL NLAANVRAGE7111063,A patent/NL171016C/nl not_active IP Right Cessation
- 1971-08-20 GB GB3921771A patent/GB1365129A/en not_active Expired
- 1971-08-23 CH CH1233971A patent/CH530786A/de not_active IP Right Cessation
- 1971-08-23 JP JP6368571A patent/JPS5516659B1/ja active Pending
- 1971-08-23 DE DE2142211A patent/DE2142211C3/de not_active Expired
- 1971-08-23 SU SU1696899A patent/SU528853A3/ru active
- 1971-08-23 BE BE771669A patent/BE771669A/xx not_active IP Right Cessation
- 1971-08-23 SE SE7110657A patent/SE373278B/xx unknown
- 1971-08-23 FR FR7130595A patent/FR2105939A5/fr not_active Expired
- 1971-08-24 AT AT741171A patent/AT321452B/de not_active IP Right Cessation
- 1971-08-24 DK DK413171AA patent/DK138578B/da unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK138578C (nl) | 1979-03-12 |
| AT321452B (de) | 1975-04-10 |
| GB1365129A (en) | 1974-08-29 |
| DE2142211C3 (de) | 1980-05-22 |
| NO133573C (nl) | 1976-05-26 |
| NL171016C (nl) | 1983-02-01 |
| NL7111063A (nl) | 1972-02-28 |
| IL37407A (en) | 1975-02-10 |
| BE771669A (fr) | 1971-12-31 |
| SU528853A3 (ru) | 1976-09-15 |
| DE2142211B2 (de) | 1979-07-19 |
| US3759247A (en) | 1973-09-18 |
| DE2142211A1 (de) | 1972-03-23 |
| DK138578B (da) | 1978-10-02 |
| NL171016B (nl) | 1982-09-01 |
| JPS5516659B1 (nl) | 1980-05-06 |
| FR2105939A5 (nl) | 1972-04-28 |
| CH530786A (de) | 1972-11-30 |
| SE373278B (sv) | 1975-02-03 |
| IL37407A0 (en) | 1971-10-20 |
| CA980869A (en) | 1975-12-30 |
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