CN109431541A - A kind of imitative blood flow body mould of ultrasonic Doppler - Google Patents
A kind of imitative blood flow body mould of ultrasonic Doppler Download PDFInfo
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Abstract
一种超声多普勒仿血流体模，包括：体模外壳和仿血装置，外壳的底面包括有包括第一数目个孔的底面板，孔通过封堵器封闭；外壳的顶面包括声窗；外壳内形成一内腔，内腔灌充有仿组织材料；仿血装置包括第一仿血管、第二仿血管、仿血流入口、仿血流出口和仿血连通管；第一仿血管和第二仿血管分别与声窗成一夹角地穿过内腔，第一仿血管的第一端在外壳外与仿血流入口连接，第二仿血管的第一端在外壳外与仿血流出口连接；第一仿血管的第二端和第二仿血管的第二端在外壳外通过仿血连通管连通；第一仿血管和第二仿血管的中心轴线相互平行；第一仿血管与第二仿血管的位于内腔中的部分嵌埋在仿组织材料中。如此，可以有效地检测超声多普勒仪器性能。An ultrasonic Doppler blood-like fluid mold comprising: a phantom housing and a blood-like device, the bottom surface of the outer casing comprising a bottom panel comprising a first number of holes, the holes being closed by the occluder; the top surface of the outer casing comprising sound a window; an inner cavity is formed in the outer casing, and the inner cavity is filled with a tissue-like material; the blood-like device comprises a first pseudo blood vessel, a second blood vessel, a blood flow inlet, a blood flow outlet, and a blood-like communication tube; The blood vessel and the second blood vessel are respectively passed through the inner cavity at an angle with the acoustic window, and the first end of the first blood vessel is connected to the blood flow inlet outside the outer casing, and the first end of the second blood vessel is outside the outer casing and the imitation a blood flow outlet connection; the second end of the first blood vessel and the second end of the second blood vessel are connected outside the outer casing through the blood-like communication tube; the central axes of the first blood vessel and the second blood vessel are parallel to each other; A portion of the blood vessel and the second blood vessel that is located in the inner cavity is embedded in the tissue-like material. In this way, the performance of the ultrasonic Doppler instrument can be effectively detected.
Description
Technical field
The present invention relates to medical instrument quality examination fields, more particularly to a kind of ultrasonic Doppler instrument performance that is used for detect
Imitative blood flow body mould.
Background technique
Successful application of the doppler principle in ultrasonic diagnostic technique, be 20th century mankind in medicine and Instrumentation Engineering field
One of major progress of acquirement.Ultrasonic Doppler frequency offset phenomena is due to sound source and receiver or echo target (reflector, scattering
Body) relative motion and the physical effect that generates.At present clinic device therefor operating mode be divided into continuous wave Doppler (CWD),
Three kinds of Pulsed-Wave Doppler (PWD) and color doppler flow imaging (CFM), the echo target being related to include the red blood in blood
Ball, cardiac muscle, vascular wall and the tissue being close to locomotive organ, and it then includes Doppler's frequency that information, which shows with presentation mode,
Spectrum, color blood-stream and three kinds of audio signal.In specific product, " color ultrasound " of country's common name, i.e., external so-called " three function
Formula (triplex) " instrument collects two-dimentional (2D) gray scale imaging, Doppler color rheography, color doppler power imaging, continuous and pulse
The much informations forms such as wave Doppler frequency spectrum, Doppler sounds signal；External so-called " double function (duplex) " instrument, i.e., it is domestic
Meaning is super with the high-grade black and white that pulse Doppler spectrum and audio signal export；Transcranial Doppler blood flowmeter, Doppler's tire
Youngster's Umbilical Blood Flow instrument only provides frequency spectrum corresponding with velocity of blood flow and sound；Fetal heart frequency (sound) instrument monitors fetal heart frequency with sound；
And the fetal monitor listed in recent years then integrates Umbilical Blood Flow and heart rate detection.
As other medical supersonic instruments, to ensure its in clinical application safe and effective, in product development, life
It produces, listing approval, buy in the links such as examination, the comparison of periodic check and similar product, it must be to the property of doppler system
It can be carried out science detection and objectively evaluate.Have more productions at home and in hospital in view of the ultrasonic Doppler instrument of blood flow class
Clinical a large amount of uses, the performance quality as enterprise product is examined and the Quality Control detection as hospital's equipment in use has become one
The urgent actual demand of kind, just imitative blood flow body molding has determined official standard IEC61685- first for International Electrotechnical Commission (IEC)
2001.In accordance with the plan of State Food and Drug Administration, China immediately completes conversion of the standard to domestic standard, repairs
Change and has been implemented so far from January 1st, 2004 using the pharmaceuticals industry standard YY/T0458 of the standard.
The more systems including CIRS company, the U.S., including Gammex-RMI company and ATS Laboratories company etc.
Quotient is made, some has before IEC61685-2001 formulation imitates the listing of blood flow body mould, and some until just have product to push away in recent years
Out.But it is measured according to international standard, these products are nonconforming in many aspects, and expose multinomial defect in practical.
For example, the Doppler emulating blood flow body mould of ATS Laboratories company production, sound bearing medium is polyurethane rubber,
It all seriously violates international standard IEC61685 and currency of Chinese medical industry standard YY/ at two aspect of rate of sound and attenuation of sound characteristic
T0458 will obtain the result of distortion for quality testing ultrasonic Doppler instrument.In addition, the imitative blood in the body mould flows through pipe
Road concentrates near middle deep, can not adapt to the requirement in a wide range of interior measurement blood flow detection depth；Its distinctive multitube
Formula structure needs frequently to plug in use, leads to imitative blood spill and leakage, contaminated equipment and environment, and influence measurement result
Stability and repdocutbility.In another example the imitative vessel diameter being embedded into Gammex-MRI product is 5mm, it is 40 ° with sound window angle,
Cause overall flow range limited.In another example the imitative organization material of imitative blood flow body mould forms for expendable, contained liquid component
It can be gradually from evaporation loss from the molecular gap of sheathing material and sound window, so as to cause performance parameter change, so that losing effectiveness.
For another example independent of any label of imitative vessel position in the sound window of imitative blood flow body mould, operator need to search on a large scale in sound window
Rope not only expends the time, but also influences accuracy, repdocutbility and the reliability of measurement result.Investigation depth is that how general color ultrasound and frequency spectrum be
The primary technical indicator of instrument is strangled, color ultrasound blood flow detection depth is to be read on two-dimentional gray scale image with electronic cursor, but frequency spectrum
Doppler's instrument can not read investigation depth using electronic cursor without two-dimentional gray scale imaging function.In another example since clinic is examined
Disconnected human body is different, and the working frequency of color ultrasound and frequency spectrum Doppler probe differs greatly, and high person is up to 8MHz or more, low person
Up to 1MHz, under the conditions of imitative organization material acoustic attenuation coefficient has norm constraint and limited imitative blood flow body mould size, use is same
The imitative blood flow body mould of platform combines both ends and is difficult.
Accordingly, it would be desirable to there is improved plan, a kind of ultrasonic Doppler that can solve above-mentioned one or more problems is provided
Imitative blood flow body mould.
Summary of the invention
This specification one or more embodiment describes a kind of imitative blood flow body mould of ultrasonic Doppler, the imitative blood flow body mould solution
It has determined one or more defects in the prior art.
According in a first aspect, providing a kind of imitative blood flow body mould of ultrasonic Doppler, comprising: body mould shell and imitative blood device,
Wherein,
The bottom surface of the body mould shell includes the bottom panel including the first number hole, and the hole passes through corresponding closure
Device closing；The top surface of the body mould shell includes sound window；An inner cavity is formed in the body mould shell, the inner cavity filling has imitative group
Knit material；
The imitative blood device is connected to including the first imitative blood vessel, the second imitative blood vessel, imitative blood flow entrance, imitative blood stream outlet with imitative blood
Pipe；The first imitative blood vessel and the second imitative blood vessel pass through the inner cavity with having angle respectively with the sound window, and described the
The first end of one imitative blood vessel is connect outside the body mould shell with the imitative blood flow entrance, and the first end of the second imitative blood vessel exists
The body mould shell is outer to be connect with the imitative blood stream outlet；The of the second end of the first imitative blood vessel and the second imitative blood vessel
Two ends pass through the imitative blood communicating pipe connection outside the body mould shell；In the first imitative blood vessel and the second imitative blood vessel
Mandrel line is parallel to each other；The first imitative blood vessel is located at being partially embedded into described in the inner cavity with the described second imitative blood vessel
In imitative organization material.
In one embodiment, the imitative organization material is aqueous gel based high molecular composite material, and the velocity of sound is (1540
± 10) ((23 ± 3) DEG C) m/s, acoustic attenuation coefficient slope are (0.5 ± 0.05) dB/ (cmMHz) ((23 ± 3) DEG C), described imitative
Organization material can be used aqueous Precerving liquid and be maintained, the aqueous Precerving liquid via blind hole on the bottom panel plugging device
Injection.
In one embodiment, the body mould shell is made of organic glass, includes front before the body mould shell
Plate, behind include rear panel, side includes side panel, and the front panel, the rear panel and the side panel medial surface are opened
There is non-slip groove.
In one embodiment, the plugging device is vacuum sealing rubber.
In one embodiment, the described first imitative blood vessel is different with the internal diameter of the described second imitative blood vessel, the imitative blood connection
Pipe has gradual change internal diameter pipeline.
In one embodiment, the described first imitative blood vessel and the second imitative blood vessel angle between the sound window respectively
Range is 30 °~60 °.
In one embodiment, imitative vessel position mark line, the imitative vessel position mark line mark are decorated in the sound window
There is the projected position of the described first imitative blood vessel and the second imitative blood vessel that are located in the inner cavity in the sound window.
In one embodiment, include front panel before the body mould shell, include behind the body mould shell
Rear panel, the front panel and/or the rear panel are decorated with imitative vessel position mark line, and the imitative vessel position mark line indicates
The described first imitative blood vessel and the second imitative blood vessel in the inner cavity is on the front panel and/or the rear panel
Projected position is equipped with scale on the upper edge of the imitative vessel position mark line.
In one embodiment, the surrounding of the sound window is disposed with sink frame, and the sink frame is bonded by organic glass item
It forms, or is an integrally-molded by acrylonitrile-butadiene-styrene (ABS) polymer plastic.
In one embodiment, it further includes attenuator that the ultrasonic Doppler, which imitates blood flow body mould, and the sound of the attenuator is special
Property impedance be 1.4 × 106Rayleigh~1.7 × 106Rayleigh.
The ultrasonic Doppler provided by one or more embodiments imitates blood flow body mould, using on bottom panel hole and closure
Device injects Precerving liquid, can carry out time-based maintenance to imitative organization material, it is ensured that imitative organization material ingredient and characterisitic parameter are stablized, greatly
Extend the service life of the imitative blood flow body mould greatly.Blood flow body mould is imitated by the ultrasonic Doppler that one or more embodiments provide,
Using aqueous gel based high molecular composite material as imitative organization material, parameters,acoustic, such as rate of sound and attenuation of sound characteristic it
Class meets international standard requirement, will obtain good result when being used for quality testing.It is mentioned by one or more embodiments
The ultrasonic Doppler of confession imitates blood flow body mould, is provided with non-slip groove by plate in front, rear panel and side panel medial surface, can be effective
Ground prevents the opposite sliding between imitative organization material and body mould shell.The ultrasonic Doppler provided by one or more embodiments
Imitative blood flow body mould can be in same flow using two imitative blood vessels of different inner diameters by being connected to the imitative blood communicating pipe of gradual change internal diameter
Two different flow velocitys are obtained under the conditions of amount, to effectively extend the flow velocity range of doppler system.Pass through one or more
The ultrasonic Doppler that a embodiment provides imitates blood flow body mould, the tilting and imitative direction of flow of blood using imitative blood vessel and sound window on the contrary,
Color ultrasound and spectral Doppler blood flow investigation depth and direction discernment ability can more easily be detected.By one or more real
The ultrasonic Doppler for applying example offer imitates blood flow body mould, using the imitative vessel position mark line being decorated in sound window, in detection operation
The time for finding imitative vessel position can be saved and position is accurate, so that the human error of detection be effectively reduced.Pass through
The ultrasonic Doppler that one or more embodiments provide imitates blood flow body mould, is decorated with imitative blood vessel using plate in front and/or rear panel
The upper edge of position mark line, the imitative vessel position mark line is equipped with scale, reads blood flow detection depth with can be convenient
Apparent value.Blood flow body mould is imitated by the ultrasonic Doppler that one or more embodiments provide, is coupled in probe using by attenuator
Between sound window, the depth capacity for enabling doppler system to measure is embedded into depth significantly more than the maximum of imitative blood vessel, thus full
The requirement of sufficient low frequency and highly sensitive probe.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, identical component is presented with like reference characters.It should be evident that the accompanying drawings in the following description
Only some embodiments of the present invention, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 shows the schematic diagram of internal structure that blood flow body mould is imitated according to the ultrasonic Doppler of one embodiment；
Fig. 2 shows the schematic diagrames according to the imitative blood device of one embodiment；
Fig. 3 shows the outside side view that blood flow body mould is imitated according to the ultrasonic Doppler of one embodiment；
Fig. 4, which is shown, is coupled into the spy of promoting circulation of blood stream using acoustic attenuation piece according to the transcranial Doppler ultrasound of one embodiment probe
Survey the schematic diagram of depth detection；
Fig. 5 shows the signal that imitative velocity of blood flow detection is carried out according to the color ultrasound ultrasonic Doppler transducer of one embodiment
Figure；
Fig. 6, which is shown, imitates blood flow body mould front cross-sectional view according to the ultrasonic Doppler of one embodiment；
Fig. 7, which is shown, imitates blood flow body mould front cross-sectional view according to the ultrasonic Doppler of one embodiment.
Specific embodiment
With reference to the accompanying drawing, the scheme provided this specification is described.
Fig. 1 shows the schematic diagram of internal structure that blood flow body mould 1 is imitated according to the ultrasonic Doppler of one embodiment.Ultrasound is more
It includes body mould shell 50 and imitative blood device 60 that Pu Le, which imitates blood flow body mould 1, (see Fig. 2).It include bottom panel on the bottom surface of body mould shell 50
21, the first circular hole 22, the second circular hole 23 and third circular hole 24, each circular hole, which are disposed with, on bottom panel 21 passes through corresponding closure
The closing of device (not shown).In one example, plugging device is vacuum sealing rubber.In one example, as shown in Figure 6 and Figure 7,
Plugging device is the first vacuum sealing rubber 29, the second vacuum sealing rubber 30 and third vacuum sealing rubber 31.Body mould shell 50
Top surface be disposed with sound window 11.An inner cavity 38 is formed in body mould shell 50, filling has imitative organization material 32 in inner cavity 38, such as schemes
Shown in 6 and Fig. 7, imitates organization material 32 and be full of entire inner cavity 38.In one example, imitative organization material is aqueous gel base high score
Sub- composite material.In one example, the velocity of sound of the aqueous gel based high molecular composite material be (1540 ± 10) m/s ((23 ±
3) DEG C), acoustic attenuation coefficient slope is (0.5 ± 0.05) dB/ (cmMHz) ((23 ± 3) DEG C).
In one example, imitative vessel position mark line 13 and imitative vessel position mark line are decorated on 11 lateral surface of sound window
12, imitative vessel position mark line 13 and imitative vessel position mark line 12 indicate the first imitative 26 He of blood vessel in inner cavity 38 respectively
Projected position of the second imitative blood vessel 27 in sound window 11.
In one example, body mould shell 50 is made of organic glass, includes that front panel (does not show before body mould shell 50
It out), include rear panel 3 behind, side includes side panel 18 and side panel 4.Plate, rear panel and side panel medial surface are equal in front
It is provided with non-slip groove, to prevent imitative organization material 32 and body mould shell 50 are opposite from sliding.For example, as shown in Figure 1, on side panel 18
It is provided with round non-slip groove 17, oval non-slip groove 25 is provided on rear panel 3.
Although showing three circular holes in Fig. 1, these three circular holes are sequentially arranged along the length direction of bottom panel 21.But this
Field technical staff is it is understood that quantity, shape and the position in hole can change.For example, the quantity in hole can be
Any suitable numbers such as 1,2,4.For example, the shape in hole can be any suitable shape such as rectangular, triangle, ellipse.
For example, the position in hole can be arranged along the width direction or diagonal of bottom panel.Utilize the circular hole on bottom panel 21
And plugging device, Precerving liquid and pumping can be injected in imitative organization material daily maintenance, to carry out to imitative organization material regular
Maintenance, it is ensured that imitative organization material ingredient and characterisitic parameter are stablized, and the service life of the imitative blood flow body mould is thus greatly prolonged
In conjunction with Fig. 2, it can be seen that imitative blood device 60 includes the first imitative blood vessel 26, the second imitative blood vessel 27, imitative blood flow entrance
14, blood stream outlet 15 and imitative blood communicating pipe 8 are imitated.In Fig. 1, the central axis of the first imitative blood vessel 26 and the second imitative blood vessel 27 is mutual
In parallel, and respectively inner cavity 38 is passed through with having angle with sound window 11.In one example, the first imitative blood vessel 26 and the second imitative blood vessel
27 pass through inner cavity 38 at 30 ° of angles with sound window 11 respectively.It is understood that the first imitative blood vessel 26 and the second imitative blood vessel 27 are distinguished
Inner cavity 38 can be passed through at any suitable angle with sound window 11, it is preferable that the angle is 30 °~60 °.Preferably, angle is
30 °, 45 ° or 60 °.In one example, the first imitative blood vessel 26 and the second imitative blood vessel 27 have acoustics identical with human vas
Parameter, density are 0.930 (g/cm3), and imitating the vascular grafts velocity of sound is 1555 (m/s), and acoustic attenuation coefficient slope is with measuring signal
The difference of frequency and it is different, with the relationship in following table one:
| f(MHz) | 2.0 | 3.5 | 4.0 | 5.0 | 7.5 | 8.0 |
| α(dB/cm) | 4.7 | 12 | 15 | 22 | 43 | 48 |
Table one
With reference to Fig. 1, and combine Fig. 6 and Fig. 7, it can be seen that the first imitative blood vessel 26 and the second imitative blood vessel 27 positioned at inner cavity
Being partially embedded into imitative organization material 32 in 38.As shown in Figure 1, the first end of the first imitative blood vessel 26 body mould shell 50 it is outer with
Imitative blood flow entrance 14 connects, and the first end of the second imitative blood vessel 27 is connect outside body mould shell 50 with imitative blood stream outlet 15.First is imitative
The second end of blood vessel 26 is connected to outside body mould shell 50 by imitative blood communicating pipe 8 with the second end of the second imitative blood vessel 27.Such as Fig. 2 institute
Showing, imitative blood 28 can be flowed into from imitative blood flow entrance 14, the first imitative blood vessel 26, imitative blood communicating pipe 8 and the second imitative blood vessel 27 are flowed through,
It is flowed out from imitative blood stream outlet 15.First imitative blood vessel 26 and the second imitative blood vessel 27 are tilting relative to sound window 11, and imitative blood stream
It moves contrary, detect the blood flow detection depth and direction discernment ability of color ultrasound and frequency spectrum Doppler with can be convenient.
In one example, the first imitative blood vessel 26 is different with the internal diameter of the second imitative blood vessel 27, and imitating has gradual change blood communicating pipe 8
Internal diameter pipeline, internal diameter gradually decrease to internal diameter identical with small imitative blood vessel from internal diameter identical with big imitative blood vessel.For example,
In Fig. 2, the first imitative blood vessel 26 have big internal diameter, the second imitative blood vessel 27 have small internal diameter, imitate blood communicating pipe 8 internal diameter from
With the first imitative blood vessel 26 connection when same big internal diameter, it is when gradually decreasing to connect with the second imitative blood vessel 27 and its
Identical small internal diameter.Although imitative blood communicating pipe 8 shown in Fig. 2 have it is inverted " u "-shaped, it will be appreciated by those skilled in the art that
, other suitable shapes are also possible, such as linear type.First imitative blood vessel 26 is different with the second imitative 27 internal diameter of blood vessel,
By imitating the gradual change internal diameter pipeline connection of blood communicating pipe 8, the hydrodynamics according to " cross-sectional area is inversely proportional in flow velocity and pipe " is former
Reason, can be obtained under the conditions of same flow two kinds it is different in flow rate, to effectively extend the flow velocity range of system.
In one example, with reference to Fig. 1, it is decorated with imitative vessel position mark line 13 and 12 on 11 lateral surface of sound window, imitates blood vessel
Position mark line 13 and 12 indicates the projection of the first imitative blood vessel 26 and the second imitative blood vessel 27 in sound window 11 in inner cavity 38
Position.In one example, imitating vessel position mark line is the first imitative blood vessel 26 and the second imitative blood being marked in inner cavity
The color-bar band mark of projected position and thickness of the pipe 27 in sound window 11.By imitating vessel position mark line, can be convenient
User understands the respective accurate location and/or thickness for identifying imitative blood vessel, and the imitative blood of searching so can have both been saved in detection operation
The time of pipe position, and can ensure that position is accurate, so that the human error of detection be effectively reduced.
It in one example, include front panel (not shown) before body mould shell 1, after including behind body mould shell 1
It is decorated with imitative vessel position mark line (not shown) on panel, front panel and/or rear panel lateral surface, imitates vessel position mark line mark
There is the projected position of the first imitative blood vessel 26 being located in inner cavity 38 and the second imitative blood vessel 27 in front on plate and/or rear panel,
The upper edge of imitative vessel position mark line is equipped with scale (not shown).In one example, the scale of scale is accurate to mm unit.
By imitating vessel position mark line, the position and tilt angle of two imitative blood vessels can be clearly identified, blood flow is easily read
The apparent value of investigation depth.
In one example, the surrounding of sound window 11 is disposed with sink frame 10 (as shown in Figure 6).Sink frame can protect sound window
11 edges, and when using water as couplant, liquid can be kept not to be lost.
In one example, it further includes attenuator (not shown), the sound characteristics of attenuator that ultrasonic Doppler, which imitates blood flow body mould 1,
Impedance is 1.4 × 106Rayleigh~1.7 × 106Rayleigh.Attenuator is coupled between probe (not shown) and sound window 11, due to it
Acoustic attenuation coefficient up to 10 times or more of imitative organization material, the attenuator of 1mm can be converted into the imitative tissue material of 10mm or more
Material, and attenuator is the complete configuration of multi-thickness, thus can easily selection and combination, enable a system to measurement most
Big depth is embedded into depth significantly more than the maximum of imitative blood vessel, to meet the requirement of low frequency and highly sensitive probe.Using decaying
When piece, by the apparent investigation depth read with electronic cursor or scale plus the first imitative 27 tube wall of blood vessel of imitative blood vessel 26 or the second with
And the equivalent depth of attenuator, as actual investigation depth value.
Fig. 3 shows the outside side view that blood flow body mould 1 is imitated according to the ultrasonic Doppler of one embodiment.As shown in figure 3,
Ultrasonic Doppler imitate blood flow body mould 1 body mould shell before include front panel 2, behind include rear panel (not shown), the left side packet
Left panel (not shown) is included, the right side includes right panel 4, and top surface is disposed with sound window 11, and bottom surface includes bottom panel (not shown).Front
Imitative vessel position mark line 16 is decorated on 2 lateral surface of plate, imitative vessel position mark line 16 indicates the first imitative blood in inner cavity
26 (not shown) of pipe and the second imitative 27 (not shown) of the blood vessel projected position on plate 2 in front.In one example, outside rear panel
Imitative vessel position mark line 16 is decorated on side, imitative vessel position mark line 16 indicates the first imitative 26 He of blood vessel in inner cavity
Projected position of the second imitative blood vessel 27 on plate below.In one example, in the upper along installation of imitative vessel position mark line 16
There is scale.In one example, the scale of scale is accurate to mm unit.Imitative vessel position mark line is decorated on 11 lateral surface of sound window
12 and imitative vessel position mark line 13, the first imitative blood vessel 26 in inner cavity and the second imitative blood vessel 27 are indicated respectively in sound window 11
On projected position.In one example, it imitates vessel position mark line 12 and imitative vessel position mark line 13 is to be marked to be located at
The color-bar band mark of the first imitative blood vessel 26 and the second imitative projected position of the blood vessel 27 in sound window 11 and thickness in inner cavity.
The surrounding of sound window 11 is disposed with sink frame 10, and sink frame 10 is bonded by organic glass item, or by ABS plastic (acrylic nitrile-butadiene
Styrene polymer plastic) it is an integrally-molded.In one example, the material of sound window 11 is the polyester film of 70 μ m-thicks,
It is to imitate human skin tissue for its acoustic characteristic.In one example, retaining-plate 5, supporting be there also is provided below bottom panel
Plate 5 is connected and fixed by bottom fixing bolt (not shown) with bottom panel.
The ultrasonic Doppler that this specification one or more embodiment provides imitates blood flow body mould, and it is super to can be used for color ultrasound-frequency spectrum
The detection of sound Doppler's instrument universal performance.Using this imitate blood flow body mould need to cooperate constant flow pump, online flowmeter, device for storing liquid with
Buffer unit etc. uses.It needs for imitative blood to be filled into imitative blood vessel when use, air entrapment is discharged, starting constant flow pump makes imitative blood
Liquid is according to assigned direction in imitative intravascular flow, and the revolving speed for adjusting constant flow pump makes imitative blood have different flow velocitys.
Fig. 4, which is shown, is coupled into the spy of promoting circulation of blood stream using acoustic attenuation piece according to the transcranial Doppler ultrasound of one embodiment probe
Survey the schematic diagram of depth detection.First confirm that 34 surfaces of transcranial Doppler ultrasound probe are intact when use, to 10 introversion of sink frame
Enter appropriate couplant, if water is used to must assure that probe 34 without breakage as couplant, water depth is with 34 radiating surfaces that will pop one's head in
Sufficiently coupling is advisable.Probe 34 is coupled in the imitative vessel position mark line 12 or imitative blood vessel of imitative blood vessel to be measured in sound window 11
At position mark line 13, and according to color blood-stream image or/and spectrogram performance judge its normal incidence with make necessity it is micro-
It adjusts.Constant flow pump (not shown) switch is opened, and imitates velocity of blood flow to measured value by adjusting constant flow pump rotational speed regulation, opens ultrasound
Doppler system host (not shown) simultaneously adjusts host measurement parameter, until that can show on ultrasonic Doppler host display
Until imitative blood information.It is painted with imitative vessel position mark line 16 in the front panel outer side of the body mould shell of imitative blood flow body mould 1,
The first imitative 26 (not shown) of blood vessel in inner cavity is marked in imitative vessel position mark line 16 and the second imitative blood vessel 27 (does not show
Projected position on the front panel out), thereon along the scale that scale is accurate to mm unit is equipped with, it is possible thereby to easily read
The investigation depth index of transcranial Doppler blood flow detection analyzer.
In one example, the blood flow direction recognition capability of ultrasonic transcranial Doppler blood flowmeter is detected.First will
Probe 34 is coupled in the imitative vessel position mark line 12 on 11 lateral surface of sound window, and it is a certain that observation spectrogram should only come across baseline
Side；Then probe 34 is translated to the imitative vessel position mark line 13 being coupled on 11 lateral surface of sound window, spectrogram should only come across
The baseline other side.
Lower limit is occupy meeting working frequency, such as when 1MHz or the extra-high probe of sensitivity, it can be by selected thickness
Attenuator 33 is coupled between probe 34 and sound window 11, it is possible thereby to measure its investigation depth index.In one example, decay
Piece 33 is monolithic.In one example, attenuator 33 is multi-disc.When using attenuator, by what is read with electronic cursor or scale
Apparent investigation depth 36, in addition the equivalent depth of imitative vascular wall correction amount and attenuator, as actual investigation depth value.Example
Such as, the acoustic characteristic impedance of attenuator 33 is 1.4 × 106Pa.s/m~1.7 × 106Pa.s/m, acoustic attenuation coefficient slope is in 5dB/
(cmMHz) more than, then the attenuator of 1mm can be converted into the imitative organization material of 10mm or more.
Fig. 5 shows the signal that imitative blood flow velocity detection is carried out according to the color ultrasound ultrasonic Doppler transducer of one embodiment
Figure.It needs on 11 surface of sound window to carry out 37 direct-coupling of color ultrasound ultrasonic Doppler transducer using water or couplant when use
Coupling.Probe 37 is coupled on the imitative vessel position mark line 13 above small imitative blood vessel on 11 surface of sound window first, is shown
The cross-section image of small imitative blood vessel adjusts the relevant control end of tested equipment to obtain clearly color blood-stream, not satisfy
With and colored interference subject to, keep probe 37 perpendicular to 11 surface of sound window, it is biggish to be embedded into depth to imitative blood vessel in the direction of the arrow
Then probe 37 is returned to the position before colour disappearing, is surveyed with electronic cursor by direction sliding until color Doppler flow signals disappear
Measuring colour signal is the depth that consecutive hours imitates blood vessel distalmost end, as the apparent detection of the probe in colorflow mode
Depth can find out actual detection depth along with imitative vascular wall correction amount.
In one example, investigation depth is more than the range of imitative blood flow body mould 1, then suitable thickness is placed in sound window 11
Acoustic attenuation piece simultaneously guarantees good coupling, reads apparent investigation depth 36 at this time, in addition imitative vascular wall correction amount and attenuator
Equivalent depth, thus find out actual detection depth.
Blood flow body mould is imitated by the ultrasonic Doppler that this specification one or more embodiment provides, has been well solved existing
There are one or more problems in technology.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all any modification, equivalent substitution, improvement and etc. on the basis of technical solution of the present invention, done should all
Including within protection scope of the present invention.
Claims (10)
1. a kind of ultrasonic Doppler imitates blood flow body mould, comprising: body mould shell and imitative blood device, wherein
The bottom surface of the body mould shell includes the bottom panel including the first number hole, and the hole is sealed by corresponding plugging device
It closes；The top surface of the body mould shell includes sound window；An inner cavity is formed in the body mould shell, the inner cavity filling has imitative tissue material
Material；
The imitative blood device includes the first imitative blood vessel, the second imitative blood vessel, imitative blood flow entrance, imitative blood stream outlet and imitative blood communicating pipe；
The first imitative blood vessel and the second imitative blood vessel pass through the inner cavity with having angle respectively with the sound window, and described first is imitative
The first end of blood vessel is connect outside the body mould shell with the imitative blood flow entrance, and the first end of the second imitative blood vessel is described
Body mould shell is outer to be connect with the imitative blood stream outlet；The second end of the second end of the first imitative blood vessel and the second imitative blood vessel
Pass through the imitative blood communicating pipe connection outside the body mould shell；The central axis of the first imitative blood vessel and the second imitative blood vessel
Line is parallel to each other；Being partially embedded at described imitative group in the inner cavity of the first imitative blood vessel and the described second imitative blood vessel
It knits in material.
2. ultrasonic Doppler as described in claim 1 imitates blood flow body mould, wherein the imitative organization material is that aqueous gel base is high
Molecular composite material, the velocity of sound are (1540 ± 10) m/s ((23 ± 3) DEG C), and acoustic attenuation coefficient slope is (0.5 ± 0.05) dB/
(cmMHz) ((23 ± 3) DEG C), the imitative organization material can be used aqueous Precerving liquid and maintained, the aqueous Precerving liquid warp
By the plugging device injection of blind hole on the bottom panel.
3. ultrasonic Doppler as claimed in claim 1 or 2 imitates blood flow body mould, wherein the body mould shell is by organic glass system
At, include front panel before the body mould shell, behind include rear panel, side includes side panel, the front panel, described
Rear panel and the side panel medial surface are provided with non-slip groove.
4. ultrasonic Doppler as claimed in claim 1 or 2 imitates blood flow body mould, wherein the plugging device is vacuum sealing rubber.
5. ultrasonic Doppler as claimed in claim 1 or 2 imitates blood flow body mould, wherein the first imitative blood vessel and described second
The internal diameter of imitative blood vessel is different, and the imitative blood communicating pipe has gradual change internal diameter pipeline.
6. ultrasonic Doppler as claimed in claim 1 or 2 imitates blood flow body mould, wherein the first imitative blood vessel and described second
The angular range between the sound window is 30 °~60 ° to imitative blood vessel respectively.
7. ultrasonic Doppler as claimed in claim 1 or 2 imitates blood flow body mould, wherein be decorated with imitative vessel position in the sound window
Mark line, the imitative vessel position mark line indicate the described first imitative blood vessel and the second imitative blood vessel in the inner cavity
Projected position in the sound window.
8. ultrasonic Doppler as claimed in claim 1 or 2 imitates blood flow body mould, wherein before including before the body mould shell
Panel includes rear panel behind the body mould shell, is decorated with imitative vessel position on the outside of the front panel and/or the rear panel
Mark line, the imitative vessel position mark line indicate the described first imitative blood vessel and the second imitative blood vessel in the inner cavity
The upper edge of projected position on the front panel and/or the rear panel, the imitative vessel position mark line is equipped with scale.
9. ultrasonic Doppler as claimed in claim 1 or 2 imitates blood flow body mould, wherein the surrounding of the sound window is disposed with sink
Frame, the sink frame are bonded by organic glass item, or by acrylonitrile-butadiene-styrene (ABS) polymer plastic integral molded plastic and
At.
10. ultrasonic Doppler as claimed in claim 1 or 2 imitates blood flow body mould, wherein the ultrasonic Doppler imitates blood flow body mould
It further include attenuator, the acoustic characteristic impedance of the attenuator is 1.4 × 106Rayleigh~1.7 × 106Rayleigh.
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| CN116773664A (en) * | 2023-06-15 | 2023-09-19 | 中国科学院苏州生物医学工程技术研究所 | Blood simulation phantom performance detection method and device |
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Application publication date: 20190308 |