CN103674477A - Physical model for study on determination of flow field of inferior vena branch - Google Patents
Physical model for study on determination of flow field of inferior vena branch Download PDFInfo
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- CN103674477A CN103674477A CN201310636236.XA CN201310636236A CN103674477A CN 103674477 A CN103674477 A CN 103674477A CN 201310636236 A CN201310636236 A CN 201310636236A CN 103674477 A CN103674477 A CN 103674477A
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- furcation
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- inferior caval
- caval vein
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- 239000007788 liquid Substances 0.000 claims abstract description 10
- 210000003462 vein Anatomy 0.000 claims description 59
- 230000004087 circulation Effects 0.000 claims description 16
- 239000011521 glass Substances 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000000004 hemodynamic effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 5
- 210000003111 iliac vein Anatomy 0.000 description 11
- 239000012530 fluid Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 238000011160 research Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000001435 haemodynamic effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 210000003484 anatomy Anatomy 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 210000000748 cardiovascular system Anatomy 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 208000030613 peripheral artery disease Diseases 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000002792 vascular Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The invention discloses a physical model for the study on determination of flow field of an inferior vena branch. The model comprises an inverted-Y-shaped inferior vena branch model, a water tank, two flow meters, two speed regulators, and two circulating power pumps. The circulating power pumps are disposed inside the water tank. The inverted-Y-shaped inferior vena branch model comprises a vertical port and two diagonal ports. The diagonal ports are liquid inlets. The vertical port is a liquid outlet. The diagonal ports extend into the water tank through transparent hoses and are connected with the circulating power pumps inside the water tank. The flow meters and the speed regulators are disposed on the transparent hoses between the diagonal ports and the circulating power pumps. The vertical port extends to the water tank through another transparent hose. The physical model is reasonable and simple in structure and is similar to the human inferior vena branch in shape. The physical model meets the needs of PIV study, is applicable to PIV technical measurement, and can assist in studying hemodynamics of the human inferior vena branch.
Description
Technical field
The present invention relates to vessel geometry in a kind of human blood circulatory system and the investigation system technology of Field Characteristics, be specifically related to a kind of fluid mechanics physical model of studying inferior caval vein hypomere, belong to technical field of medical instruments.
Background technology
In medical research, how in detection bodies, the fluid dynamics of cardiovascular system is puzzlement researcher's difficult point always, because the flow field of endovascular blood flow is comparatively complicated, current some clinical diagnosises and scientific research apparatus, such as color Doppler, magnetic resonance etc., although can obtain the parameters such as blood flow rate, cannot carry out easy, direct, accurate DATA REASONING to the cardiovascular system of Complex Flows.
Over nearly more than 10 years, the outer vascular pattern of construct, employing particle imaging velocity measuring technique (PIV) stream field method of testing obtain large development, its principle is the trace particle of following fluid motion by adding in fluid, these particles are illuminated continuously 2 times when flowing through specific plane, utilize camera technique that the particle being illuminated is recorded, by the subsequent treatment of image, just can obtain particle displacement within a certain period of time again, thereby draw the velocity field of fluid.PIV technology is the current transient state whole flow field measuring technology of state-of-the-art a kind of non-intervention type in the world, dynamic response is fast, spatial resolution is high, by flow speed data being carried out to aftertreatment, just can obtain some important parameters in haemodynamics, such as shearing rate, shearing force, vorticity etc., the flow field analysis of steady flow and nonstationary flow can be advantageously applied to, the distribution situation of shearing stress in flow field can be at large described.In recent years at home and abroad, PIV flow field measurement technique is successfully applied to comprise the decentraction vascular pattern Study on Flow Field of blood vessel Bifurcation Model, and obtains comparatively desirable effect.
In the clinical research of peripheral artery disease, iliac vein is narrow is the important topic of studying in peripheral artery disease, anatomical features due to this position, local fluid dynamics causes relevant lower limb disease extremely, but its Hemodynamics Study is difficult to accurately study by existing instrument in human body.
Summary of the invention
Object of the present invention provides a kind of physical model of measuring for studying inferior caval vein furcation flow field, this model structure is rationally simple, similar with the form of human body inferior caval vein furcation, meet the requirement of carrying out PIV research, can be used for PIV commercial measurement, and then can help the haemodynamics at this position of researching human body.
The object of the invention is to be achieved through the following technical solutions, the physical model of measuring for studying inferior caval vein furcation flow field, it is characterized in that, be provided with the inferior caval vein of falling a Y shape furcation model, a tank, two flows and take into account arrangements for speed regulation, two circulation power pumps; Circulation power pump is set in tank, inferior caval vein furcation model comprises a vertically disposed port and 2 ports that are obliquely installed, the port being obliquely installed is inlet, vertically disposed port is liquid outlet, the port being obliquely installed by transparent hose, extend in tank and connection water channel in circulation power pump, on transparent hose between the port being obliquely installed and circulation power pump, flow is installed and is taken into account arrangements for speed regulation, vertically disposed port extend in tank by transparent hose.
Further, above-mentionedly for studying the physical model of measuring in inferior caval vein furcation flow field, be provided with fixed support, inferior caval vein furcation model is arranged on fixed support.
Further, described inferior caval vein furcation model is glass model.
Further, the vertically disposed port of described inferior caval vein furcation model is cylindrical shape, and diameter is 25-30mm.
Further, the port of described inferior caval vein furcation model inclination setting is cylindrical shape, and diameter is 16-18mm.
Further, the perpendicular angle that port extended line is set of one of them port being obliquely installed of described inferior caval vein furcation model is 20-25 °, another be obliquely installed port be 40-50 ° with the vertical angle that port extended line is set.
The present invention has following beneficial effect: first, according to the part anatomy index of human body, design the physical model of a similar inferior caval vein furcation, be that bilateral iliac vein upwards imports inferior caval vein and presents down " Y " form, wherein right iliac vein traveling is more steep, with the about 20-25 degree of inferior caval vein angulation, left iliac vein and inferior caval vein angulation are about 40-50 degree.The vertically disposed port of inferior caval vein furcation model is cylindrical shape, and diameter is 25-30mm, similar with inferior caval vein shape.The port that inferior caval vein furcation model 1 is obliquely installed is cylindrical shape, and diameter is 16-18mm.Inferior caval vein furcation model 1 one of them to be obliquely installed the perpendicular angle that port extended line is set of port be 20-25 °, similar with right iliac vein shape, another is obliquely installed port is 40-50 ° with the vertical angle that port extended line is set, similar with left iliac vein shape.So the physical model of design can be used for PIV commercial measurement, and then can help the haemodynamics at this position of researching human body.The second, this model structure is rationally simple, similar with the form of human body inferior caval vein furcation, at experimental study, is convenient to measure the fluid dynamic physical model of inferior caval vein hypomere, meets the requirement of carrying out PIV research.
Accompanying drawing explanation
Fig. 1 is that the present invention is for studying the structural representation of the physical model of inferior caval vein furcation flow field mensuration;
In figure: 1 inferior caval vein furcation model, 2 fixed supports, 3 transparent hoses, 4 flows are taken into account arrangements for speed regulation, 5 circulation power pumps, 6 tanks, 7 supply sockets.
Embodiment
Below in conjunction with embodiment and experimental example, the present invention is described in further detail, but they are not limitation of the invention.
As shown in Figure 1, the physical model of measuring for studying inferior caval vein furcation flow field, comprises that a Y shape inferior caval vein furcation model 1, tank 6, two flows take into account arrangements for speed regulation 4, two circulation power pumps 5.Circulation power pump 5 is arranged in tank 6, and circulation power pump 5 is by supply socket 7 energizes.Y shape inferior caval vein furcation model 1 is measured for flow field.
Inferior caval vein furcation model 1 comprises a vertically disposed port and 2 ports that are obliquely installed, and 2 ports that are obliquely installed are inlet.Vertically disposed port is liquid outlet.
The port being obliquely installed by transparent hose 3, extend in tank 6 and connection water channel 6 in circulation power pump 5, circulation power pump 5 is for pumping into flexible pipe by liquid.On transparent hose 3 between the port being obliquely installed and circulation power pump 5, flow is installed and is taken into account arrangements for speed regulation 4, guarantee that liquid enters in inferior caval vein furcation model by certain flow rate, for regulating flexible pipe flow rate of liquid.
Vertically disposed port extend in tank 6 by transparent hose 3.
Above-mentionedly for studying the physical model of measuring in inferior caval vein furcation flow field, be also provided with fixed support 2, inferior caval vein furcation model 1 is arranged on fixed support 2.
Inferior caval vein furcation model 1 is glass model, adopts mould to pour into and makes.
Inferior caval vein furcation model 1 vertically disposed port is cylindrical shape, and diameter is 25-30mm, similar with inferior caval vein shape.
The port that inferior caval vein furcation model 1 is obliquely installed is cylindrical shape, and diameter is 16-18mm.
In inferior caval vein furcation model 1, to be obliquely installed the perpendicular angle that port extended line is set of port be 20-25 ° on right side, similar with right iliac vein shape.In inferior caval vein furcation model 1, port is set is 40-50 ° with the vertical angle that port extended line is set to left side, similar with left iliac vein shape.
The physical model that the present invention measures for studying inferior caval vein furcation flow field, for measuring the process of its Flow Field Distribution: this invention is connected with PIV system, and PIV system comprises laser instrument, synchronizer, video camera, optic path system, image acquisition and analytic system; In the liquid of tank, add suitable trace particle, conventional hollow glass microsphere, by circulation power pumping system, liquid is pumped in inferior caval vein furcation model, and take into account flow speed control valve goalkeeper flow control at needs numerical value by flow, then by PIV system, measure the Flow Field Distribution situation of corresponding site.
According to the part anatomy index of human body, design the physical model of a similar inferior caval vein furcation, be that bilateral iliac vein upwards imports inferior caval vein and presents down " Y " form, wherein right iliac vein traveling is more steep, with the about 20-25 degree of inferior caval vein angulation, left iliac vein and inferior caval vein angulation are about 40-50 degree.So the physical model of design can be used for PIV commercial measurement, and then can help the haemodynamics at this position of researching human body.
This model structure is rationally simple, similar with the form of human body inferior caval vein furcation, at experimental study, is convenient to measure the fluid dynamic physical model of inferior caval vein hypomere, meets the requirement of carrying out PIV research.
Claims (6)
1. the physical model of measuring for studying inferior caval vein furcation flow field, is characterized in that, is provided with the inferior caval vein of falling a Y shape furcation model, a tank, two flows and takes into account arrangements for speed regulation, two circulation power pumps; Circulation power pump is set in tank, inferior caval vein furcation model comprises a vertically disposed port and 2 ports that are obliquely installed, the port being obliquely installed is inlet, vertically disposed port is liquid outlet, the port being obliquely installed by flexible pipe, extend in tank and connection water channel in circulation power pump, on flexible pipe between the port being obliquely installed and circulation power pump, flow is installed and is taken into account arrangements for speed regulation, vertically disposed port extend in tank by flexible pipe.
2. the physical model of measuring for studying inferior caval vein furcation flow field according to claim 1, is characterized in that, be provided with fixed support, inferior caval vein furcation model is arranged on fixed support.
3. the physical model of measuring for studying inferior caval vein furcation flow field according to claim 1 and 2, is characterized in that, described inferior caval vein furcation model is glass model.
4. the physical model of measuring for studying inferior caval vein furcation flow field according to claim 3, is characterized in that, the vertically disposed port of described inferior caval vein furcation model is cylindrical shape, and diameter is 25-30mm.
5. the physical model of measuring for studying inferior caval vein furcation flow field according to claim 4, is characterized in that, the port of described inferior caval vein furcation model inclination setting is cylindrical shape, and diameter is 16-18mm.
6. according to claim 5 for studying the physical model of inferior caval vein furcation flow field mensuration, it is characterized in that, the perpendicular angle that port extended line is set of one of them port being obliquely installed of described inferior caval vein furcation model is 20-25 °, another be obliquely installed port be 40-50 ° with the vertical angle that port extended line is set.
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| CN201310636236.XA CN103674477A (en) | 2013-12-03 | 2013-12-03 | Physical model for study on determination of flow field of inferior vena branch |
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| CN201310636236.XA CN103674477A (en) | 2013-12-03 | 2013-12-03 | Physical model for study on determination of flow field of inferior vena branch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710417A (en) * | 2016-12-12 | 2017-05-24 | 营口市贵东医疗器械制造有限公司 | Full automatic vena epigastrica blood flow direction inspection standardized patient |
| CN109596857A (en) * | 2018-11-28 | 2019-04-09 | 北京航空航天大学 | A kind of particle image velocimetry modular unit with personalized composite structure |
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|---|---|---|---|---|
| RU2033645C1 (en) * | 1992-06-30 | 1995-04-20 | Российский государственный медицинский университет | Device for simulating blood circulation in inferior caval vein |
| CN2881833Y (en) * | 2005-12-31 | 2007-03-21 | 黄秀荣 | Training model for venous puncture |
| CN101504804A (en) * | 2009-03-04 | 2009-08-12 | 西安交通大学 | Tri-dimensional blood flow simulation experiment apparatus for encephalic Willis ring |
| CN201724937U (en) * | 2010-05-17 | 2011-01-26 | 郭应强 | Closely circulated perfusion system |
| CN201893061U (en) * | 2010-11-11 | 2011-07-06 | 天津医学高等专科学校 | Teaching model for examining venous blood flow directions |
| CN203616094U (en) * | 2013-12-03 | 2014-05-28 | 张喜成 | Physical model used for researching postcava furcation flow field measurement |
-
2013
- 2013-12-03 CN CN201310636236.XA patent/CN103674477A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2033645C1 (en) * | 1992-06-30 | 1995-04-20 | Российский государственный медицинский университет | Device for simulating blood circulation in inferior caval vein |
| CN2881833Y (en) * | 2005-12-31 | 2007-03-21 | 黄秀荣 | Training model for venous puncture |
| CN101504804A (en) * | 2009-03-04 | 2009-08-12 | 西安交通大学 | Tri-dimensional blood flow simulation experiment apparatus for encephalic Willis ring |
| CN201724937U (en) * | 2010-05-17 | 2011-01-26 | 郭应强 | Closely circulated perfusion system |
| CN201893061U (en) * | 2010-11-11 | 2011-07-06 | 天津医学高等专科学校 | Teaching model for examining venous blood flow directions |
| CN203616094U (en) * | 2013-12-03 | 2014-05-28 | 张喜成 | Physical model used for researching postcava furcation flow field measurement |
Non-Patent Citations (1)
| Title |
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| ANEAL HARLAL等: "Vena Cava Filter Performance Based on Hemodynamics and Reported Thrombosis and Pulmonary Embolism Patterns", 《JOURNAL OF VASCULAR AND INTERVENTIONAL RADIOLOGY》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710417A (en) * | 2016-12-12 | 2017-05-24 | 营口市贵东医疗器械制造有限公司 | Full automatic vena epigastrica blood flow direction inspection standardized patient |
| CN109596857A (en) * | 2018-11-28 | 2019-04-09 | 北京航空航天大学 | A kind of particle image velocimetry modular unit with personalized composite structure |
| CN109596857B (en) * | 2018-11-28 | 2020-01-24 | 北京航空航天大学 | A Modular Device for Particle Image Velocimetry with Personalized Combination Structure |
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Application publication date: 20140326 |