CN209734012U - calibration device for simulating small-flow blood flow - Google Patents
calibration device for simulating small-flow blood flow Download PDFInfo
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- CN209734012U CN209734012U CN201920210146.7U CN201920210146U CN209734012U CN 209734012 U CN209734012 U CN 209734012U CN 201920210146 U CN201920210146 U CN 201920210146U CN 209734012 U CN209734012 U CN 209734012U
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- liquid
- suspension
- liquid outlet
- storage tank
- hole
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- 230000017531 blood circulation Effects 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 108
- 239000000725 suspension Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000523 sample Substances 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 239000008280 blood Substances 0.000 claims description 6
- 210000004369 blood Anatomy 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 2
- 238000004088 simulation Methods 0.000 abstract description 5
- 229920002472 Starch Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000004 hemodynamic effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
A simulated small flow blood flow calibration apparatus comprising: a reservoir for storing the suspension; the constant pressure tank is arranged above the liquid storage tank and used for keeping a constant amount of suspension liquid, and a liquid inlet hole, an overflow hole and a liquid outlet hole are sequentially arranged on the constant pressure tank from top to bottom; a liquid inlet pipeline communicating the liquid storage tank and the liquid inlet hole; an overflow pipe for communicating the liquid storage tank and the overflow hole; a liquid outlet pipeline with a first end connected with the liquid outlet hole and a second end connected with a liquid storage tank or an external measuring cylinder; the water pump is arranged on the liquid inlet pipeline, so that the suspension liquid enters the constant-pressure tank from the liquid storage tank through the liquid inlet pipeline, the suspension liquid exceeding the height of the overflow hole flows back to the liquid storage tank from the overflow pipeline, the liquid level of the suspension liquid in the constant-pressure tank is equal to the height of the overflow hole, and the suspension liquid flows out at a constant speed through the liquid outlet pipeline. For the Doppler test die body among the prior art, the utility model discloses a little flow blood flow calibration device of simulation simple structure, compactness, consequently can reduce the volume, be convenient for remove and carry.
Description
Technical Field
The utility model relates to a flow calibration device especially relates to a simulation low discharge blood flow calibration device.
Background
The simulated blood flow calibration device is a calibration device for calibrating a blood flow velocity detector or an instrument (such as a hemodynamic detector) with a blood flow velocity detection function. In the prior art, a Doppler test die body is usually adopted to calibrate the blood flow velocity detector, but the Doppler test die body is complex in structure, large in size and inconvenient to move and carry.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a simulation low discharge blood flow calibration device to solve above-mentioned problem.
According to the utility model discloses an aspect provides a simulation low discharge blood flow calibration device, include:
A reservoir for storing the suspension;
The constant pressure tank is arranged above the liquid storage tank and used for keeping a constant amount of suspension liquid, and a liquid inlet hole, an overflow hole and a liquid outlet hole are sequentially arranged on the constant pressure tank from top to bottom;
A liquid inlet pipeline communicating the liquid storage tank and the liquid inlet hole;
An overflow pipe for communicating the liquid storage tank and the overflow hole;
a liquid outlet pipeline with a first end connected with the liquid outlet hole and a second end connected with a liquid storage tank or an external measuring cylinder;
the water pump is arranged on the liquid inlet pipeline, so that the suspension liquid enters the constant-pressure tank from the liquid storage tank through the liquid inlet pipeline, the suspension liquid exceeding the height of the overflow hole flows back to the liquid storage tank from the overflow pipeline, the liquid level of the suspension liquid in the constant-pressure tank is equal to the height of the overflow hole, and the suspension liquid flows out at a constant speed through the liquid outlet pipeline.
From this, realize that low discharge blood flow marks through simple structure and part, for the Doppler test die body among the prior art, the utility model discloses a simulation low discharge blood flow marks device simple structure, compactness, consequently can reduce the volume, is convenient for remove and carry.
in some embodiments, the liquid outlet pipeline has a plurality of liquid outlet pipelines with different pipe diameters, and each liquid outlet pipeline is provided with a switch for controlling the on-off of the liquid outlet pipeline.
Therefore, flow velocities of different grades can be set through liquid outlet pipelines with different pipe diameters.
in some embodiments, the switch is a flow regulating valve capable of regulating the flow of the liquid outlet pipeline.
Therefore, the flow of the liquid outlet pipeline can be changed through the flow regulating valve, so that the flow speed can be regulated as required.
In some embodiments, there are four exit pipes.
Therefore, the flow speed grade can be reasonably set.
in some embodiments, the diameter of the outlet pipe is 4mm to 8 mm.
Therefore, the blood flow velocity can be simulated reasonably.
in some embodiments, further comprising: the probe fixing frame is arranged on the liquid outlet pipeline and used for placing the probe.
therefore, the flow velocity of the liquid in the liquid outlet pipeline can be conveniently detected by the probe.
drawings
Fig. 1 is a schematic structural view of the calibration device for simulating small flow blood flow of the present invention;
FIG. 2 is a block diagram of the device for calibrating a simulated small flow blood flow shown in FIG. 1;
Fig. 3 is a usage state diagram of the simulated small flow blood flow calibration device shown in fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1-2 schematically illustrate a simulated small flow blood calibration device according to an embodiment of the present invention. As shown in the figure, the device for calibrating the simulated small-flow blood flow comprises a liquid storage tank 1, a constant pressure tank 2, a liquid inlet pipeline 31, an overflow pipeline 32, a liquid outlet pipeline 33, a flow regulating valve 4, a water pump 6 and a probe fixing frame 5.
The reservoir 1 is used for storing the suspension.
The constant pressure tank 2 is used for keeping a constant amount of suspension, is arranged above the liquid storage tank 1, and is provided with a liquid inlet hole, an overflow hole and a liquid outlet hole from top to bottom on the side wall.
The liquid inlet pipe 31 connects the liquid storage tank 1 and the liquid inlet hole. The overflow conduit 32 communicates the reservoir 1 with the overflow aperture. The first end of the liquid outlet pipe 33 is connected with the liquid outlet hole, and the second end is provided with a hose which can be switched between the liquid storage tank 1 and an external measuring cylinder 8 or measuring cup. Or two branches can be arranged, a three-way valve is arranged at the junction of the branches, and the output end of the liquid outlet pipeline 33 is controlled to be the liquid storage tank 1 or the measuring cylinder 8. Preferably, there are four outlet pipes 33, each with a different pipe diameter, to form four flow stages. Each liquid outlet pipe 33 is provided with a switch, specifically a flow regulating valve 4, and the flow regulating valve 4 can be fully opened or fully closed to control the on-off of each liquid outlet pipe 33, and can also be adjusted to change the flow of the liquid outlet pipe 33, so that the flow rate can be adjusted as required, and is not limited to the four flow rate gears.
the water pump 6 is arranged on the liquid inlet pipeline 31 and used for pumping the suspension liquid from the liquid storage tank 1 into the constant-pressure tank 2 through the liquid inlet pipeline 31, and the overflow hole is arranged below the liquid inlet hole, so that the suspension liquid exceeding the height of the overflow hole can flow back to the liquid storage tank 1 from the overflow pipeline 32, the liquid level of the suspension liquid is equal to the height of the overflow hole, and the pressure in the constant-pressure tank 2 is kept constant. At the same time, the suspension will also flow out through the outlet pipe 33 with a constant flow rate, since the height of the outlet opening is below the overflow opening, i.e. below the liquid level.
The probe fixing frame 5 is arranged on the outlet pipe 33 and is used for placing a probe of a blood flow velocity detector (or a flow velocity probe of a hemodynamic detector) to be calibrated, so that the probe 9 can measure the flow velocity of the outlet pipe 33.
Before the device is used, suspension is prepared, and starch is added into water in a certain ratio of 100:1 so as to be close to the viscosity of human blood. The configuration method comprises the following steps: firstly, 30 g of starch is put into a measuring cup, about 50 ml of cold water is poured into the measuring cup and is uniformly stirred, then boiling water at 100 ℃ is poured into the measuring cup and is stirred at the same time until the volume reaches 1000 ml, and then the measuring cup and 2000 ml of cold water are mixed and cooled for use.
And then approves each file. The method is approved in that the hose of the second end of the corresponding outlet pipe 33 is connected to an external graduated cylinder 8, the flow regulating valve 4 of the outlet pipe 33 is opened (the others are kept closed), and the water pump 6 is started. The amount L of liquid flowing out of the outlet pipe 33 is measured during time T using the measuring cylinder 8 and the cross-sectional area S of the outlet pipe 33 is known. The flow rate is calculated by the formula v ═ L/ST. Three measurements were made at each gear and averaged as a standard flow rate value for each gear, which was marked on a trailer for calibration purposes.
when the blood flow velocity detector is used, as shown in fig. 3, the hose at the second end of the liquid outlet pipeline 33 is connected to the liquid storage tank 1, the water pump 6 is started, the ultrasonic coupling agent 7 is smeared on the liquid outlet pipeline 33, the probe 9 of the blood flow velocity detector to be calibrated is placed on the probe fixing frame 5, the probe 9 is used for detecting the flow velocity of the liquid outlet pipeline 33, and then the flow velocity is compared with the standard flow velocity value of the liquid outlet pipeline, so that the blood flow velocity detector is calibrated.
The liquid outlet pipelines 33 with different pipe diameters can be selected by opening different flow regulating valves, and the flow regulating valves can also be regulated, so that the flow speed of the detected suspension is changed. The total number of the pipe diameters is 4 different for selection, the range of the pipe diameters (diameters) is between 4mm and 8mm, and the flow velocity is distributed between 0cm/s and 100 cm/s.
what has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept of the present invention, several modifications and improvements can be made, or the above technical solutions can be freely combined, which all belong to the protection scope of the present invention.
Claims (6)
1. A calibration device for simulating small flow blood flow is characterized by comprising:
a reservoir (1) for storing the suspension;
the constant pressure tank (2) is arranged above the liquid storage tank (1) and used for keeping a constant amount of suspension, and a liquid inlet hole, an overflow hole and a liquid outlet hole are sequentially arranged on the constant pressure tank (2) from top to bottom;
A liquid inlet pipeline (31) communicating the liquid storage tank (1) and the liquid inlet hole;
An overflow pipe (32) communicating the reservoir (1) and the overflow hole;
A liquid outlet pipeline (33) with a first end connected with the liquid outlet hole and a second end connected with the liquid storage tank (1) or an external measuring cylinder (8);
And a water pump (6) arranged on the liquid inlet pipeline (31) enables the suspension to enter the constant-pressure tank (2) from the liquid storage tank (1) through the liquid inlet pipeline (31), the suspension exceeding the height of the overflow hole flows back to the liquid storage tank (1) from the overflow pipeline (32), so that the liquid level of the suspension in the constant-pressure tank (2) is equal to the height of the overflow hole, and the suspension flows out at a constant speed through the liquid outlet pipeline (33).
2. The device for calibrating simulated small flow blood flow according to claim 1, wherein: the liquid outlet pipelines (33) are provided with a plurality of pipes with different pipe diameters, and each liquid outlet pipeline (33) is provided with a switch for controlling the on-off of the liquid outlet pipeline.
3. The simulated small flow blood calibration device of claim 2, wherein: the switch is a flow regulating valve (4) which can regulate the flow of the liquid outlet pipeline (33).
4. The simulated small flow blood calibration device of claim 2, wherein: the liquid outlet pipelines (33) are four.
5. The simulated small flow blood calibration device of claim 2, wherein: the diameter of the liquid outlet pipeline (33) is 4mm-8 mm.
6. The simulated small flow blood calibration device of any one of claims 1 to 5, further comprising: and the probe fixing frame (5) is arranged on the liquid outlet pipeline (33) and is used for placing the probe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920210146.7U CN209734012U (en) | 2019-02-14 | 2019-02-14 | calibration device for simulating small-flow blood flow |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920210146.7U CN209734012U (en) | 2019-02-14 | 2019-02-14 | calibration device for simulating small-flow blood flow |
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| Publication Number | Publication Date |
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| CN209734012U true CN209734012U (en) | 2019-12-06 |
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| CN201920210146.7U Active CN209734012U (en) | 2019-02-14 | 2019-02-14 | calibration device for simulating small-flow blood flow |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023071005A1 (en) * | 2021-10-30 | 2023-05-04 | 姜卫 | Structure capable of implementing continuous circulation function |
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2019
- 2019-02-14 CN CN201920210146.7U patent/CN209734012U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023071005A1 (en) * | 2021-10-30 | 2023-05-04 | 姜卫 | Structure capable of implementing continuous circulation function |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Building A, No. 29 Bishan Street, Huangpu District, Guangzhou City, Guangdong Province, 510000, 902 Patentee after: Huakeying Medical Technology (Guangzhou) Co.,Ltd. Country or region after: China Address before: 510000 Guangzhou 203-204 high tech Industrial Development Zone, Guangdong, Guangzhou, 3 Patentee before: GUANGZHOU HUAKEYING MEDICAL TECHNOLOGY CO.,LTD. Country or region before: China |
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| CP03 | Change of name, title or address |