GB1033741A - Fluid flow measurement - Google Patents
Fluid flow measurementInfo
- Publication number
- GB1033741A GB1033741A GB2854063A GB2854063A GB1033741A GB 1033741 A GB1033741 A GB 1033741A GB 2854063 A GB2854063 A GB 2854063A GB 2854063 A GB2854063 A GB 2854063A GB 1033741 A GB1033741 A GB 1033741A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- flow
- bridge
- probe
- july
- 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.)
- Expired
Links
- 239000012530 fluid Substances 0.000 title abstract 4
- 238000005259 measurement Methods 0.000 title 1
- 230000017531 blood circulation Effects 0.000 abstract 3
- 239000000523 sample Substances 0.000 abstract 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 210000004204 blood vessel Anatomy 0.000 abstract 1
- 210000001124 body fluid Anatomy 0.000 abstract 1
- 239000010839 body fluid Substances 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000010445 mica Substances 0.000 abstract 1
- 229910052618 mica group Inorganic materials 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
Classifications
-
- 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
-
- 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 for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
- A61B5/026—Measuring blood flow
- A61B5/0275—Measuring blood flow using tracers, e.g. dye dilution
- A61B5/028—Measuring blood flow using tracers, e.g. dye dilution by thermo-dilution
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Cardiology (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Medical Informatics (AREA)
- Physiology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
1, 033, 741. Hypodermic probe for measuring blood flow. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 20, 1964 [July 18, 1963], No. 28540/63. Heading A5K. [Also in Division G1] A device for measuring flow of fluids e.g. body fluids comprises a pair of temperature sensitive resistance elements mounted on opposite sides of a probe insertable in a fluid channel and separated by an obstacle, whereby when the elements are aligned with the fluid flow and supplied with equal heating currents a temperature difference is set up therebetween dependent on flow rate, which is measurable by out of balance of a bridge in two of whose arms the elements are connected. A hypodermic probe (Fig. 1) comprises a hollow needle insertable in a blood vessel 2 and carrying temperature sensitive symmetrical resistance elements e.g. thermistors or silicon semi-conductors S 1 S 2 on opposite sides of a mica strip mounted on the needle tip, and disposed to lie across the direction of bloodflow (Fig. 2 not shown). The elements are connected through the needle to an A.C. energized bridge (Fig. 3 not shown) completed by equal resistors. The elements assume differing temperatures with consequent bridge unbalance indicated by a detector calibrated to show direction and rate of blood flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2854063A GB1033741A (en) | 1963-07-18 | 1963-07-18 | Fluid flow measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2854063A GB1033741A (en) | 1963-07-18 | 1963-07-18 | Fluid flow measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1033741A true GB1033741A (en) | 1966-06-22 |
Family
ID=10277252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2854063A Expired GB1033741A (en) | 1963-07-18 | 1963-07-18 | Fluid flow measurement |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1033741A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1573098B1 (en) * | 1966-11-30 | 1971-12-16 | Siemens Ag | Device for measuring weak gas flows, preferably in a gas analyzer |
| US3789831A (en) * | 1972-02-11 | 1974-02-05 | D Kopaniky | Thermoelectric probe apparatus for tissue fluid flow measurement |
| FR2410258A1 (en) * | 1977-11-29 | 1979-06-22 | Bosch Gmbh Robert | FLUID FLOW MEASUREMENT DEVICE |
| US4354504A (en) * | 1979-09-04 | 1982-10-19 | Bro William J | Thermal diffusion flow probe |
-
1963
- 1963-07-18 GB GB2854063A patent/GB1033741A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1573098B1 (en) * | 1966-11-30 | 1971-12-16 | Siemens Ag | Device for measuring weak gas flows, preferably in a gas analyzer |
| US3789831A (en) * | 1972-02-11 | 1974-02-05 | D Kopaniky | Thermoelectric probe apparatus for tissue fluid flow measurement |
| FR2410258A1 (en) * | 1977-11-29 | 1979-06-22 | Bosch Gmbh Robert | FLUID FLOW MEASUREMENT DEVICE |
| US4354504A (en) * | 1979-09-04 | 1982-10-19 | Bro William J | Thermal diffusion flow probe |
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