Metering verification equipment of sphygmomanometer and correction verification method of metering verification equipment

Abstract

The invention discloses a sphygmomanometer metering verification device which comprises a flow control module, the flow control module comprises a display panel and a computer control unit, the flow control module is electrically connected with a peristaltic pump, the peristaltic pump is connected with a simulation blood vessel through a pipeline, the simulation blood vessel is wrapped with a simulation arm, and the tail end of the simulation blood vessel is provided with a metering container. A pressure sensor is installed on the simulation arm. The metering container comprises a transparent measuring cup, and different flow outputs are set; the flow control module is used for controlling the rotating speed of the peristaltic pump so as to control the fluid output pressure, and output in various pressure ranges is facilitated; the heart pulse periodicity is simulated through the pulse formed when the peristaltic pump works, the similarity of liquid and blood pulses in the simulated blood vessel is improved, the arm is simulated through the simulated arm, the simulated blood vessel is configured to pass through, various needed information in the simulated blood vessel can be simply and conveniently measured, and the simulation trueness is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical equipment, and in particular relates to a measurement verification device for a sphygmomanometer and a calibration and inspection method thereof. Background Art

[0002] Blood pressure can reflect many aspects of a person's health and disease, so monitoring it is necessary in many situations. The accuracy of blood pressure measurements is crucial to both personal health and medical safety, so regular testing and calibration of blood pressure measuring equipment are essential. Furthermore, sphygmomanometer medical metrology is a crucial component of healthcare quality management and a crucial means of ensuring the accuracy of medical instrument measurements.

[0003] Blood pressure monitors are responsible for blood pressure detection and disease prevention, but their accuracy has always been tested. The results measured by most brands and models of blood pressure monitors are lower than those of mercury blood pressure monitors, and there is a huge difference between the simulated blood pressure and human blood pressure, resulting in a lack of equipment that is close to the actual blood pressure monitor.

[0004] To this end, we propose a measurement verification device for a sphygmomanometer and a calibration inspection method thereof to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem of lack of verification equipment close to the real blood pressure meter, and to propose a measurement verification equipment for the blood pressure meter and a calibration and inspection method thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A measurement verification device for a sphygmomanometer includes a flow control module, the flow control module including a display panel and a computer control unit, the flow control module being electrically connected to a peristaltic pump, the peristaltic pump pipeline being connected to a simulated blood vessel, the simulated blood vessel being wrapped with a simulated arm, a metering container being provided at the end of the simulated blood vessel, and a pressure sensor being installed on the simulated arm. The flow control module is used to control the number of revolutions of the peristaltic pump to achieve the purpose of controlling the flow rate, and different flow outputs can be set according to the requirements of the regulations; the flow control module is used to control the rotation speed of the peristaltic pump to control the fluid output pressure, facilitating the output of various pressure ranges; the pulses generated by the peristaltic pump during operation are used to simulate the periodicity of heart pulses, thereby improving the similarity between the fluid in the simulated blood vessel and the blood pulses; the simulated arm is simulated by the simulated arm, and the simulated blood vessel is configured to pass through, so that various required information in the simulated blood vessel can be easily measured, thereby improving the simulation realism.

[0008] Preferably, the measuring container includes a transparent measuring cup, wherein a buoyancy frame is slidably mounted inside the transparent measuring cup, the upper portion of the buoyancy frame is fixedly connected to a connecting frame, one end of the connecting frame is fixedly connected to a movable frame, and the lower portion of the movable frame is fixedly connected to a magnifying glass. The transparent measuring cup is used to collect liquid discharged from the simulated blood vessel, and the liquid is used to float the buoyancy frame upward, which acts upward on the connecting frame through the buoyancy frame, which acts upward on the movable frame through the movable frame, so that the magnifying glass and the liquid level in the transparent measuring cup are synchronously raised, and the magnifying glass is used to magnify the water level and scale, making it convenient for the user to observe the scale in detail.

[0009] Preferably, the transparent measuring cup includes a transparent cup body, a guide post is provided inside the transparent cup body, the lower end of the guide post is fixedly connected to the transparent cup body, and a transparent strip is fixedly connected to the outside of the transparent cup body, and the transparent strip is provided with a scale. The transparent cup body is used to collect liquid, and the liquid level is observed through the transparent strip, which facilitates collection and observation of the liquid level.

[0010] Preferably, a guide groove is provided on the side of the transparent strip to facilitate the lifting and lowering of the movable frame.

[0011] Preferably, the buoyancy frame includes a slide tube, a buoyancy block is fixedly connected to the lower portion of the transparent cup, and the slide tube passes through the buoyancy block. The buoyancy block is lifted upward by the liquid, and acts upward on the connecting frame through the buoyancy block, so that the movable frame is lifted synchronously by the connecting frame.

[0012] Preferably, the buoyancy frame further comprises an indicator plate, the base of which is fixedly connected to the buoyancy block. The indicator plate is used to point to the transparent strip to increase the visibility of the liquid surface, thereby increasing the clarity of observation.

[0013] Preferably, the connecting frame comprises an L-shaped frame, and a balancing block is fixedly connected to the lower end of the L-shaped frame. The gravity of the balancing block acts downward on the lower part of the L-shaped frame 51, and acts on the movable frame through the L-shaped frame 51, thereby increasing the balance of the connecting frame and the movable frame.

[0014] Preferably, the movable frame includes a frame body, the lower portion of which is fixedly connected to a mounting frame, which is fixedly connected to the lower portion of the frame body. When the connecting frame rises, the L-shaped frame 51 acts on the frame body to move the frame body upward, and the mounting frame drives the magnifying glass to rise, so that the magnifying glass can be synchronized with the liquid level.

[0015] Preferably, the movable frame further comprises a roller, which is rotatably mounted on the lower portion of the frame body, so as to conveniently reduce the lifting resistance of the movable frame.

[0016] A method for measuring, verifying, and correcting a sphygmomanometer is developed. Different flow rates and cycles are set in the laboratory. The basic envelope of a simulated blood vessel in a simulated arm at different flow rates and peristaltic cycles is obtained and converted into information such as diastolic and systolic blood pressure and pulse, which serves as standard parameters for subsequent calibration.

[0017] The pressure and cycle information of the system's self-test under various setting conditions in the superior laboratory are coupled and matched with the calibration results for later self-test;

[0018] The actual pressure and pulse values ​​obtained under different flow and cycle conditions are collected by the superior laboratory and input into the computer control unit as the reference values. When used as a calibration device, different pressures and pulses are set to perform corresponding flow and cycle control. In actual testing, the test conditions must be consistent with those in the superior laboratory.

[0019] The experiment uses a pulse encoder electrical appliance as the driving power to precisely control the output of the flow control unit and the rotation cycle of the peristaltic pump;

[0020] The pulse encoder device can achieve 0.1mm precision control of motor movement under the condition of finding a suitable servo control precursor;

[0021] Use distilled water as the fluid medium, adopt computer automatic control and storage, and use database technology to manage test information;

[0022] The iNIBP fully simulates cardiac flow. In reality, the heart's blood flow is 4.5-6 liters per minute. Under normal conditions, the fastest and most timely iNIBP measurement method takes an average of 15 seconds, or 1-1.5 liters. Other methods take more than twice as long and require multiple calibrations under different conditions. Under simple operation, the flow control and liquid injection methods are repeatedly adjusted and controlled. This repeated adjustment of control data makes the pulse flow closer to reality, thereby improving test accuracy.

[0023] In summary, the technical effects and advantages of the present invention are as follows:

[0024] 1. Use the flow control module to control the number of revolutions of the peristaltic pump to achieve the purpose of controlling the flow rate. Set different flow outputs according to the requirements of the regulations. Use the flow control module to control the speed of the peristaltic pump to control the fluid output pressure, which is convenient for output in various pressure ranges. Through the pulses formed when the peristaltic pump is working, the periodicity of the heart pulse is simulated to improve the similarity between the liquid and blood pulses in the simulated blood vessels. By simulating the arm through the simulated arm and configuring the simulated blood vessels, various required information in the simulated blood vessels can be easily measured to improve the simulation realism.

[0025] 2. Use a transparent measuring cup to collect the liquid discharged from the simulated blood vessel, and use the liquid to float the buoyancy frame upward. The buoyancy frame acts upward on the connecting frame, which acts upward on the movable frame, and then acts upward on the magnifying glass through the movable frame, so that the magnifying glass and the liquid level in the transparent measuring cup rise synchronously. Use the magnifying glass to magnify the water level and scale, making it easier for the user to observe the scale in detail.

[0026] 3. Use the liquid to float the buoyancy block upward, and use the buoyancy block to act on the connecting frame upward, so that the movable frame can be driven to rise synchronously through the connecting frame.

[0027] 4. Use the indicator plate to point to the transparent strip to increase the visibility of the liquid surface, thereby increasing the clarity of observation.

[0028] 5. The gravity of the balance block is used to act downward on the lower part of the L-shaped frame 51, and acts on the movable frame through the L-shaped frame 51 to increase the balance of the connecting frame and the movable frame.

[0029] 6. When the connecting frame rises, the L-shaped frame 51 acts on the frame, causing the frame to move upward, and the magnifying glass is driven to rise through the mounting frame, so that the magnifying glass and the liquid level can be kept synchronized. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the module of the present invention;

[0031] Figure 2 This is a schematic structural diagram of the metering container of the present invention;

[0032] Figure 3 This is a schematic structural diagram of a transparent measuring cup according to the present invention;

[0033] Figure 4 This is a schematic diagram of the buoyancy frame structure of the present invention;

[0034] Figure 5 This is a structural schematic diagram of the connecting frame of the present invention;

[0035] Figure 6 It is a schematic diagram of the movable frame structure of the present invention;

[0036] Figure 7 It is a two-dimensional coordinate diagram of the present invention.

[0037] In the figure: 2. Measuring container; 3. Transparent measuring cup; 4. Buoyancy frame; 5. Connecting frame; 6. Movable frame; 7. Simulated arm; 8. Simulated blood vessel; 9. Peristaltic pump; 10. Flow control module; 11. Magnifying glass; 12. Pressure sensor; 31. Transparent cup body; 32. Transparent strip; 33. Guide column; 34. Guide groove; 41. Slide tube; 42. Buoyancy block; 43. Indicator board; 51. L-shaped frame; 52. Balance block; 61. Frame; 62. Mounting frame; 63. Roller. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the invention will be described clearly and completely below with reference to the drawings in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all the embodiments.

[0039] like Figure 1 and 2 As shown, a measurement verification device for a sphygmomanometer includes a flow control module 10, which includes a display panel and a computer control unit. The flow control module 10 is electrically connected to a peristaltic pump 9, and the peristaltic pump 9 is connected to a simulated blood vessel 8 through a pipeline. The simulated blood vessel 8 is wrapped with a simulated arm 7, and a metering container 2 is provided at the end of the simulated blood vessel 8. A pressure sensor 12 is installed on the simulated arm 7. The display panel is used to display the current fluid output flow rate, the peristaltic pump rotation cycle, and the fluid pressure cycle under the conditions, as well as the pressure and cycle information received by the auxiliary detection pressure sensor; the pressure sensor 12 is used to detect the pressure information of the current system. After the system is calibrated by the superior detection department, the pressure information under each design condition is coupled and matched to the superior detection results.

[0040] like Figure 2 As shown, measuring container 2 includes a transparent measuring cup 3, within which a buoyancy frame 4 is slidably mounted. A connecting frame 5 is fixedly connected to the upper portion of buoyancy frame 4, one end of which is fixedly connected to a movable frame 6, and a magnifying glass 11 is fixedly connected to the lower portion of movable frame 6. Liquid discharged from simulated blood vessel 8 is collected in transparent measuring cup 3, and the liquid is used to lift buoyancy frame 4 upward. This liquid acts on connecting frame 5, which in turn acts on movable frame 6, which in turn acts on magnifying glass 11, causing it to rise synchronously with the liquid level in transparent measuring cup 3. Magnifying glass 11 is then used to magnify the water level and scale.

[0041] like Figure 2 and 3 As shown, the transparent measuring cup 3 includes a transparent cup body 31, a guide post 33 is provided inside the transparent cup body 31, and the lower end of the guide post 33 is fixedly connected to the transparent cup body 31. A transparent strip 32 is fixedly connected to the outside of the transparent cup body 31, and a scale is provided on the transparent strip 32. The transparent cup body 31 is used to collect liquid, and the liquid level is observed through the transparent strip 32.

[0042] like Figure 3 As shown, the side of the transparent strip 32 is provided with a guide groove 34. The guide groove 34 is utilized to guide the movable frame 6 to rise and fall.

[0043] like Figure 2 and 4As shown, the buoyancy frame 4 includes a slide tube 41, which is slidably sleeved outside the guide column 33. The lower part of the transparent cup body 31 is fixedly connected to a buoyancy block 42, and the slide tube 41 passes through the buoyancy block 42. The buoyancy block 42 is floated upward by the liquid, and acts upward on the connecting frame 5 through the buoyancy block 42.

[0044] like Figure 2 and 4 As shown, the buoyancy frame 4 also includes an indicator plate 43, which points to the transparent strip 32. The root of the indicator plate 43 is fixedly connected to the buoyancy block 42. By using the indicator plate 43 to point to the transparent strip 32, the visibility of the liquid surface is increased, thereby increasing the clarity of observation.

[0045] like Figure 2 and 5 As shown, the connecting frame 5 includes an L-shaped frame 51, the lower end of which is fixedly connected to a balancing weight 52. The L-shaped frame 51 is fixedly mounted on the upper end of the slide tube 41. The gravity of the balancing weight 52 acts downward on the lower portion of the L-shaped frame 51, which in turn acts on the movable frame 6 through the L-shaped frame 51, thereby improving the balance of the connecting frame 5 and the movable frame 6.

[0046] like Figure 2 and 6 As shown, the movable frame 6 includes a frame body 61, a mounting frame 62 fixedly connected to the lower portion of the frame body 61, and the magnifying glass 11 fixedly mounted on the outside of the mounting frame 62. The upper portion of the frame body 61 is fixedly connected to one upper end of the L-shaped frame 51, and the mounting frame 62 is fixedly connected to the lower portion of the frame body 61. When the connecting frame 5 rises, the L-shaped frame 51 acts on the frame body 61, causing the frame body 61 to move upward, and the magnifying glass 11 is raised through the mounting frame 62.

[0047] like Figure 2 and 6 As shown, the movable frame 6 further includes a roller 63, which is rotatably mounted on the lower portion of the frame body 61. The roller 63 is rotatably embedded in the guide groove 34. The roller 63 is used to reduce the lifting resistance of the movable frame 6.

[0048] like Figure 7 As shown, a metrological verification and calibration test method for a sphygmomanometer is described. Different flow rates and cycles are set in the laboratory. The basic envelope of the simulated blood vessels in the simulated arm at different flow rates and peristaltic cycles is obtained and converted into information such as diastolic and systolic pressures and pulse, which are used as standard parameters in subsequent calibration.

[0049] The pressure and cycle information of the system's self-test under various setting conditions in the superior laboratory are coupled and matched with the calibration results for later self-test;

[0050] The actual pressure and pulse values ​​obtained under different flow and cycle conditions are collected by the superior laboratory and input into the computer control unit as the reference values. When used as a calibration device, different pressures and pulses are set to perform corresponding flow and cycle control. In actual testing, the test conditions must be consistent with those in the superior laboratory.

[0051] The experiment uses a pulse encoder electrical appliance as the driving power to precisely control the output of the flow control unit and the rotation cycle of the peristaltic pump;

[0052] The pulse encoder device can achieve 0.1mm precision control of motor movement under the condition of finding a suitable servo control precursor;

[0053] Use distilled water as the fluid medium, adopt computer automatic control and storage, and use database technology to manage test information;

[0054] The iNIBP fully simulates cardiac flow. In reality, the heart's blood flow is 4.5-6 liters per minute. The fastest and most timely iNIBP detection method takes an average of 15 seconds, or 1-1.5 liters, for normal measurements. Other methods take more than twice as long and require multiple calibrations under different conditions. With simple operation, the flow control and liquid injection methods are repeatedly debugged and controlled.

[0055] Working principle: Use the flow control module 10 to control the number of revolutions of the peristaltic pump 9 to achieve the purpose of controlling the flow rate, and set different flow outputs according to the requirements of the regulations; use the flow control module 10 to control the rotation speed of the peristaltic pump 9 to control the fluid output pressure, which is convenient for output in various pressure ranges; through the pulses formed when the peristaltic pump 9 is working, the periodicity of the heart pulse is simulated to improve the similarity between the liquid and blood pulses in the simulated blood vessel 8. By simulating the arm through the simulated arm 7 and configuring the simulated blood vessel to pass through, various required information in the simulated blood vessel can be easily measured to ensure the authenticity of the simulation.

[0056] The above is only a preferred specific embodiment of the invention, but the scope of protection of the invention is not limited to this. Any technician familiar with this technical field can make equivalent substitutions or changes within the technical scope disclosed by the invention based on the technical solution and inventive concept of the invention, which should be covered by the scope of protection of the invention.

[0057] The description briefly mentions the application direction of the invention for the existing technology that is known to and has not been changed by those skilled in the art, and combines it with the invention to form a complete technology; it avoids over-popularizing the technology familiar to those skilled in the art and is used to assist those skilled in the art to quickly understand the main content of the invention.

Claims

1. A measurement verification device for a sphygmomanometer, comprising a flow control module (10), wherein the flow control module (10) comprises a display panel and a computer control unit, and is characterized in that: The flow control module (10) is electrically connected to a peristaltic pump (9), a pipeline of the peristaltic pump (9) is connected to a simulated blood vessel (8), the simulated blood vessel (8) is wrapped with a simulated arm (7), a metering container (2) is provided at the end of the simulated blood vessel (8), and a pressure sensor (12) is installed on the simulated arm (7).

2. The measurement verification device of a sphygmomanometer according to claim 1, characterized in that: The measuring container (2) comprises a transparent measuring cup (3), a buoyancy frame (4) is slidably mounted inside the transparent measuring cup (3), a connecting frame (5) is fixedly connected to the upper portion of the buoyancy frame (4), a movable frame (6) is fixedly connected to one end of the connecting frame (5), and a magnifying glass (11) is fixedly connected to the lower portion of the movable frame (6).

3. The measurement verification device of a sphygmomanometer according to claim 2, characterized in that: The transparent measuring cup (3) comprises a transparent cup body (31), a guide post (33) is provided inside the transparent cup body (31), the lower end of the guide post (33) is fixedly connected to the transparent cup body (31), and a transparent strip (32) is fixedly connected to the outside of the transparent cup body (31), and a scale is provided on the transparent strip (32).

4. The measurement verification device of a sphygmomanometer according to claim 3, characterized in that: A guide groove (34) is provided on the side of the transparent strip (32).

5. The measurement verification device of a sphygmomanometer according to claim 3, characterized in that: The buoyancy frame (4) comprises a sliding tube (41), the lower portion of the transparent cup body (31) is fixedly connected with a buoyancy block (42), and the sliding tube (41) passes through the buoyancy block (42).

6. The measurement verification device of a sphygmomanometer according to claim 5, characterized in that: The buoyancy frame (4) further comprises an indicator plate (43), the root of which is fixedly connected to the buoyancy block (42).

7. The measurement verification device for a sphygmomanometer according to claim 2, characterized in that: The connecting frame (5) comprises an L-shaped frame (51), and a balancing block (52) is fixedly connected to the lower end of the L-shaped frame (51).

8. The measurement verification device for a sphygmomanometer according to claim 2, characterized in that: The movable frame (6) comprises a frame body (61), the lower portion of the frame body (61) is fixedly connected to a mounting frame (62), and the mounting frame (62) is fixedly connected to the lower portion of the frame body (61).

9. The measurement verification device of a sphygmomanometer according to claim 8, characterized in that: The movable frame (6) further comprises a roller (63), and the roller (63) is rotatably mounted on the lower part of the frame body (61).

10. A method for measuring, verifying, and correcting a sphygmomanometer, characterized by: Different flow rates and cycles are set in the laboratory to obtain the basic envelope of the simulated blood vessels in the simulated arm at different flow rates and peristaltic cycles, and convert it into information such as diastolic and systolic blood pressure and pulse, which will be used as standard parameters in the later calibration; The pressure and cycle information of the system's self-test under various setting conditions in the superior laboratory are coupled and matched with the calibration results for later self-test; The actual pressure and pulse values ​​obtained under different flow and cycle conditions are collected by the superior laboratory and input into the computer control unit as the reference values. When used as a calibration device, different pressures and pulses are set to perform corresponding flow and cycle control. In actual testing, the test conditions must be consistent with those in the superior laboratory. The experiment uses a pulse encoder electrical appliance as the driving power to precisely control the output of the flow control unit and the rotation cycle of the peristaltic pump; The pulse encoder device can achieve 0.1mm precision control of motor movement under the condition of finding a suitable servo control precursor; Use distilled water as the fluid medium, adopt computer automatic control and storage, and use database technology to manage test information; The iNIBP fully simulates cardiac flow. In reality, the heart's blood flow is 4.5-6 liters per minute. The fastest and most timely iNIBP detection method takes an average of 15 seconds, or 1-1.5 liters, for normal measurements. Other methods take more than twice as long and require multiple calibrations under different conditions. With simple operation, the flow control and liquid injection methods are repeatedly debugged and controlled.

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