Blood pressure simulator repeatability testing device based on pressure value curve

Abstract

The utility model relates to the technical field of pressure measurement, and discloses a blood pressure simulator repeatability testing device based on a pressure value curve, which comprises a machine body, a testing mechanism is arranged in the machine body, the testing mechanism comprises a pressure standard device P1, the pressure standard device P1 is arranged in the machine body, and one side of the machine body is connected with a pressure measuring valve through a pipeline. According to the blood pressure simulator repeatability testing device based on the pressure value curve, the testing mechanism is arranged, in the process that the blood pressure simulator repeatability testing device based on the pressure value curve conducts repeatability testing on a blood pressure simulator, the pressure value of a pressure standard P1 is directly read through upper computer software, and a pressure fluctuation curve is formed; the repeatability of the curve is analyzed, and finally the repeatability parameter index of the blood pressure simulator is represented, so that the pressure conversion part can be omitted, the pressure fluctuation curve can be directly seen, and the repeatability of the detected blood pressure simulator can be truly and accurately reflected.

Description

Technical Field

[0001] The utility model relates to the field of pressure measurement, in particular to a blood pressure simulator repeatability testing device based on a pressure value curve. Background Art

[0002] When performing repetitive measurements on a blood pressure simulator, the standard device is pressurized to a fixed point pressure as specified in the regulations. The blood pressure simulator being tested produces pressure fluctuations. The pressure value is converted into an electrical signal through a pressure converter and then captured by an oscilloscope to produce the pressure fluctuation waveform.

[0003] After searching, the existing patent (publication number: CN220708622U) discloses an intelligent calibration system for a blood pressure simulator, including: using a first control module to obtain the real blood pressure information of the human body, the indication information of the blood pressure simulator, and the measured information of the pressure converter, and calculating the indication error, accuracy error, and simulation error of the blood pressure simulator based on the above information to accurately evaluate the performance of the blood pressure simulator; presetting a parameter compensation module, generating pressure and pulse compensation parameters according to the error difference of the blood pressure simulator, starting the parameter compensation module to compensate for the working state of the blood pressure simulator so that the secondary test is qualified, and providing modification suggestions to the manufacturer based on the compensation parameters; detecting the temperature, humidity, and position information of the test environment, and compensating the test pressure based on the temperature, humidity, and position information of the test environment to improve the accuracy of the blood pressure simulator test results.

[0004] However, when the existing blood pressure simulator repeatability test device based on the pressure value curve performs repeatability testing on the blood pressure simulator and measures the repeatability parameters of the tested blood pressure simulator, it will be affected by factors such as the pressure value converting the pressure into an electrical signal, the accuracy of the oscilloscope itself, and the waveform fitting in the principle of the oscilloscope itself. This will amplify the uncertainty influence in the entire process and increase the repeatability deviation of the result from the actual tested blood pressure simulator.

[0005] Therefore, in order to solve the above problems, a blood pressure simulator repeatability test device based on pressure value curve is proposed. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the shortcomings of the prior art, the utility model provides a blood pressure simulator repeatability testing device based on a pressure value curve, which solves the problem mentioned in the above background technology that when the existing blood pressure simulator repeatability testing device based on a pressure value curve performs repeatability testing on the blood pressure simulator, when measuring the repeatability parameters of the tested blood pressure simulator, it will be affected by factors such as the pressure value converting the pressure into an electrical signal, the accuracy of the oscilloscope itself, and the waveform fitting in the principle of the oscilloscope itself, which will amplify the uncertainty influence in the whole process and cause the repeatability deviation of the obtained result from the actual tested blood pressure simulator to become larger.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blood pressure simulator repeatability test device based on a pressure value curve, comprising a body, a protective mechanism is arranged on one side of the body, a testing mechanism is arranged inside the body, the testing mechanism comprises a pressure standard P1, the pressure standard P1 is arranged inside the body, a pressure measuring valve is connected to a pipeline on one side of the body, and a ventilation mechanism is arranged on the surface of the body.

[0010] As a preferred solution, the protection mechanism includes a slide groove, which is opened on the inner wall surface of the body, a slider is arranged inside the slide groove, a support plate is arranged on the surface of the slider, and a threaded shaft a is arranged on the surface of the support plate.

[0011] As a preferred solution, a telescopic sleeve is provided on one side of the threaded shaft a, a telescopic rod is provided inside the telescopic sleeve, a threaded shaft b is provided on one side of the telescopic rod, a protective cover is provided on one side of the threaded shaft b, and a hinge is provided on one side of the protective cover.

[0012] As a preferred embodiment, the testing mechanism includes a motor, which is arranged on the upper surface of the support plate, one side of the motor is connected to a pressure regulating cylinder, one side of the pressure regulating cylinder is connected to an inflation valve by a pipe, and one side of the inflation valve is connected to an air pump by a pipe.

[0013] As a preferred solution, the pipeline on the other side of the inflation valve is connected to an exhaust valve, the pipeline on one side of the exhaust valve is connected to a pressure standard device P1, and the pipeline on one side of the pressure standard device P1 is connected to a pressure measuring valve.

[0014] As a preferred solution, a pipeline on one side of the pressure measuring valve is connected to a pressure standard device P2, a pipeline on one side of the pressure standard device P1 is connected to a container valve, a pipeline on one side of the container valve is connected to a container, and the volume of the container is 500 ml.

[0015] As a preferred embodiment, the ventilation mechanism includes a vent, which is opened on the surface of the machine body, a movable groove is opened on the inner wall surface of the vent, a movable rod is arranged inside the movable groove, and a ventilation net is arranged on one side of the movable rod.

[0016] The utility model provides a blood pressure simulator repeatability test device based on a pressure value curve. It has the following beneficial effects:

[0017] (1) The repeatability test device of the blood pressure simulator based on the pressure value curve is provided with a test mechanism. When the repeatability test device of the blood pressure simulator based on the pressure value curve is performing repeatability test on the blood pressure simulator, the exhaust valve and the container valve are first closed, the pressure measuring valve and the inflation valve are opened, the air pump works to pre-press the pressure to about 18 kPa, and then the inflation valve is closed. The motor starts to push the pressure regulating cylinder to adjust the pressure in the pipeline to about 20 kPa fed back by the pressure standard P1. At this time, the blood pressure simulator will produce pressure fluctuations similar to human blood pressure in the blood pressure simulation state. The pressure value of the pressure standard P1 is directly read by the upper computer software, and a pressure fluctuation curve is formed. The repeatability of the curve is analyzed, and finally the repeatability parameter index of the blood pressure simulator is represented by this. Then, the pressure conversion part can be omitted, and the pressure fluctuation curve can be directly seen, which can more truly and accurately reflect the repeatability of the tested blood pressure simulator. Then, the pressure value signal output by the high-precision sensor is directly used to record the pressure value curve, thereby optimizing the process of first converting the pressure signal into an electrical signal by a converter, and then outputting the waveform by an oscilloscope to obtain the repeatability result in the specification.

[0018] (2) The repeatability test device of the blood pressure simulator based on the pressure value curve is provided with a protective mechanism. During the process of performing repeatability test on the blood pressure simulator, the protective cover can be pulled first, and the hinge can be used to drive the protective cover to rotate, and then the protective cover pulls the telescopic sleeve and the telescopic rod, and the telescopic sleeve and the telescopic rod drive the support plate to rise. At the same time, under the action of the slide groove and the slider, the moving position of the support plate can be conveniently limited, and the test mechanism can be lifted by the support plate to facilitate subsequent testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the side view of the appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the test mechanism of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the protection mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of the ventilation mechanism structure of the utility model.

[0023] Wherein: 1. Machine body; 2. Protective mechanism; 201. Slide groove; 202. Slider; 203. Support plate; 204. Threaded shaft a; 205. Telescopic sleeve; 206. Telescopic rod; 207. Threaded shaft b; 208. Protective cover; 209. Hinge; 3. Testing mechanism; 301. Motor; 302. Pressure regulating cylinder; 303. Inflating valve; 304. Air pump; 305. Exhaust valve; 306. Pressure standard device P1; 307. Pressure measuring valve; 308. Pressure standard device P2; 309. Container valve; 310. Container; 4. Ventilation mechanism; 401. Ventilation port; 402. Movable groove; 403. Movable rod; 404. Ventilation net. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 and Figure 4 The utility model provides a technical solution: a blood pressure simulator repeatability test device based on a pressure value curve, comprising a body 1, a protection mechanism 2 is arranged on one side of the body 1, a testing mechanism 3 is arranged inside the body 1, a pressure measuring valve 307 is connected to a pipeline on one side of the body 1, a ventilation mechanism 4 is arranged on the surface of the body 1, the ventilation mechanism 4 comprises a ventilation port 401, the ventilation port 401 is opened on the surface of the body 1, a movable groove 402 is opened on the inner wall surface of the ventilation port 401, a movable rod 403 is arranged on the inner side of the movable groove 402, and a ventilation net 404 is arranged on one side of the movable rod 403.

[0026] Among them: in the process of repeatability testing of the blood pressure simulator by the blood pressure simulator repeatability testing device based on the pressure value curve, by providing a ventilation mechanism 4, it can ensure the ventilation of the body 1 when the body 1 is not in use, and avoid corrosion or mold growth on the internal connections of the body 1.

[0027] See also Figure 2A blood pressure simulator repeatability test device based on a pressure value curve, A test mechanism 3 is arranged inside the body 1, and the test mechanism 3 includes a pressure standard P1306, and the pressure standard P1306 is arranged inside the body 1. The test mechanism 3 includes a motor 301, and the motor 301 is arranged on the upper surface of the support plate 203. A pressure regulating cylinder 302 is connected to one side of the motor 301, and a pipe is connected to an inflation valve 303 on one side of the pressure regulating cylinder 302, and an air pump 304 is connected to one side of the inflation valve 303. An exhaust valve 305 is connected to one side of the inflation valve 303, and a pressure standard P1306 is connected to one side of the pressure standard P1306. A pressure measuring valve 307 is connected to one side of the pressure measuring valve 307. A pressure standard P2308 is connected to one side of the pressure standard P1306. A container valve 309 is connected to one side of the container valve 309. A container 310 is connected to one side of the container valve 309. The volume of the container 310 is 500ml.

[0028] Among them: in the process of repeatability test of the blood pressure simulator by the repeatability test device based on the pressure value curve, when working, first close the exhaust valve 305 and the container valve 309, open the pressure measuring valve 307 and the inflation valve 303, the air pump 304 works to pre-press the pressure to about 18kPa, and then close the inflation valve 303, the motor 301 starts to push the pressure regulating cylinder 302, and adjusts the pressure in the pipeline to about 20kPa fed back by the pressure standard P1306. At this time, the blood pressure simulator will produce pressure fluctuations similar to human blood pressure in the blood pressure simulation state, directly through The upper computer software reads the pressure value of the pressure standard P1306, forms a pressure fluctuation curve, analyzes the repeatability of the curve, and finally uses it to represent the repeatability parameter index of the blood pressure simulator. Then, the pressure conversion part can be omitted, and the pressure fluctuation curve can be directly seen, which can reflect the repeatability of the tested blood pressure simulator more truly and accurately. Then, the pressure value curve is recorded by directly using the pressure value signal output by the high-precision sensor, which optimizes the process of first using a converter to convert the pressure signal into an electrical signal, and then using an oscilloscope to output the waveform to obtain the repeatability result.

[0029] See also Figure 3 A blood pressure simulator repeatability test device based on a pressure value curve, the protection mechanism 2 includes a slide groove 201, the slide groove 201 is opened on the inner wall surface of the body 1, a slider 202 is arranged on the inner side of the slide groove 201, a support plate 203 is arranged on the surface of the slider 202, a threaded shaft a204 is arranged on the surface of the support plate 203, a telescopic sleeve 205 is arranged on one side of the threaded shaft a204, a telescopic rod 206 is sleeved on the inner side of the telescopic sleeve 205, a threaded shaft b207 is arranged on one side of the telescopic rod 206, a protective cover 208 is arranged on one side of the threaded shaft b207, and a hinge 209 is arranged on one side of the protective cover 208.

[0030] Among them: in the process of repeatability testing of the blood pressure simulator by the blood pressure simulator repeatability testing device based on the pressure value curve, the protective cover 208 can be pulled first, and under the action of the hinge 209, the hinge 209 is used to drive the protective cover 208 to rotate, and then the protective cover 208 pulls the telescopic sleeve 205 and the telescopic rod 206, and the telescopic sleeve 205 and the telescopic rod 206 drive the support plate 203 to rise, and at the same time, under the action of the slide groove 201 and the slider 202, the moving position of the support plate 203 can be conveniently limited, and the support plate 203 can be used to lift the test mechanism 3, which is convenient for subsequent testing.

[0031] The working principle of the utility model is: in the process of repeatability test of the blood pressure simulator by the repeatability test device of the pressure value curve based on the blood pressure simulator, when working, first close the exhaust valve 305 and the container valve 309, open the pressure measuring valve 307 and the inflation valve 303, the air pump 304 works to pre-press the pressure to about 18kPa, and then close the inflation valve 303, the motor 301 starts to push the pressure regulating cylinder 302, and adjusts the pressure in the pipeline to about 20kPa fed back by the pressure standard device P1306. At this time, the blood pressure simulator will produce pressure fluctuations similar to human blood pressure in the blood pressure simulation state, and directly read the pressure value of the pressure standard device P1306 through the upper computer software, and form a pressure fluctuation curve, analyze the repeatability of the curve, and finally use it to represent the repeatability parameter index of the blood pressure simulator, so that the pressure conversion part can be omitted, and the pressure fluctuation curve can be directly seen, which can reflect the pressure more realistically and accurately. The repeatability of the blood pressure simulator under test is reflected, and then the pressure value curve is recorded by directly using the pressure value signal output by the high-precision sensor, thereby optimizing the process in the specification of first using a converter to convert the pressure signal into an electrical signal, and then using an oscilloscope to output the waveform to obtain a repeatability result. Secondly, in the process of the repeatability test of the blood pressure simulator by the blood pressure simulator repeatability test device based on the pressure value curve, the protective cover 208 can be pulled first, and under the action of the hinge 209, the hinge 209 is used to drive the protective cover 208 to rotate, and then the protective cover 208 pulls the telescopic sleeve 205 and the telescopic rod 206, and the telescopic sleeve 205 and the telescopic rod 206 drive the support plate 203 to rise, and at the same time, under the action of the slide groove 201 and the slider 202, the moving position of the support plate 203 can be conveniently limited, and at the same time, the test mechanism 3 can be lifted by the support plate 203 to facilitate subsequent testing.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blood pressure simulator repeatability test device based on a pressure value curve, comprising a body (1), characterized in that: A protection mechanism (2) is provided on one side of the machine body (1); a testing mechanism (3) is provided inside the machine body (1); the testing mechanism (3) comprises a pressure standard device P1 (306); the pressure standard device P1 (306) is provided inside the machine body (1); a pressure measuring valve (307) is connected to a pipeline on one side of the machine body (1); and a ventilation mechanism (4) is provided on the surface of the machine body (1).

2. A blood pressure simulator repeatability test device based on a pressure value curve according to claim 1, characterized in that: The protection mechanism (2) comprises a slide groove (201), the slide groove (201) is provided on the inner wall surface of the body (1), a slider (202) is provided inside the slide groove (201), a support plate (203) is provided on the surface of the slider (202), and a threaded shaft a (204) is provided on the surface of the support plate (203).

3. A blood pressure simulator repeatability test device based on a pressure value curve according to claim 2, characterized in that: A telescopic sleeve (205) is provided on one side of the threaded shaft a (204), a telescopic rod (206) is sleeved on the inner side of the telescopic sleeve (205), a threaded shaft b (207) is provided on one side of the telescopic rod (206), a protective cover (208) is provided on one side of the threaded shaft b (207), and a hinge (209) is provided on one side of the protective cover (208).

4. The blood pressure simulator repeatability test device based on pressure value curve according to claim 1, characterized in that: The testing mechanism (3) comprises a motor (301), the motor (301) being arranged on the upper surface of the support plate (203), one side of the motor (301) being connected to a pressure regulating cylinder (302), one side of the pressure regulating cylinder (302) being connected to an air charging valve (303) through a pipeline, and one side of the air charging valve (303) being connected to an air pump (304) through a pipeline.

5. The blood pressure simulator repeatability test device based on pressure value curve according to claim 4, characterized in that: The pipeline on the other side of the inflation valve (303) is connected to an exhaust valve (305), the pipeline on one side of the exhaust valve (305) is connected to a pressure standard device P1 (306), and the pipeline on one side of the pressure standard device P1 (306) is connected to a pressure measuring valve (307).

6. The blood pressure simulator repeatability test device based on pressure value curve according to claim 5, characterized in that: A pipeline on one side of the pressure measuring valve (307) is connected to a pressure standard device P2 (308), a pipeline on one side of the pressure standard device P1 (306) is connected to a container valve (309), and a pipeline on one side of the container valve (309) is connected to a container (310), and the volume of the container (310) is 500 ml.

7. The blood pressure simulator repeatability test device based on pressure value curve according to claim 1, characterized in that: The ventilation mechanism (4) comprises a ventilation opening (401), the ventilation opening (401) being provided on the surface of the machine body (1), a movable groove (402) being provided on the inner wall surface of the ventilation opening (401), a movable rod (403) being provided inside the movable groove (402), and a ventilation net (404) being provided on one side of the movable rod (403).

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