An isolated automatic verification device for mercury sphygmomanometer and a verification method thereof

Abstract

This invention relates to the field of sphygmomanometer calibration technology, specifically to an isolated automatic calibration device and method for mercury sphygmomanometers. The sphygmomanometer and accessories are placed in corresponding positions on a workbench. Electrical and piping connections are controlled via a sliding switch and a control knob to automatically calibrate the sphygmomanometer and its accessories. An external protective cover is designed to prevent the danger of mercury sphygmomanometer leakage. A mercury cleaning mechanism is also included; in the event of mercury leakage, a motor switch can be activated to automatically clean the mercury from the workbench surface, improving the safety and efficiency of mercury sphygmomanometer calibration.

Description

Technical Field

[0001] This invention relates to the field of metrological verification equipment technology, specifically to an isolated automatic verification device and verification method for mercury sphygmomanometers. Background Technology

[0002] A blood pressure monitor calibration device is used to verify whether a blood pressure monitor meets the legal technical requirements according to the calibration procedure. It is used for the initial calibration, in-use inspection, and subsequent calibration of the blood pressure monitor. The calibration determines whether each calibration item of the blood pressure monitor is within the range required by the calibration procedure, and the calibration results determine whether the blood pressure monitor meets the requirements for continued use. Furthermore, it promptly eliminates unqualified blood pressure monitors to prevent malfunctions in medical and health applications.

[0003] Existing blood pressure monitor calibration devices can only measure the mercury column of mercury sphygmomanometers. Accessories (including cuffs, tubing, and air bladders) can only be visually inspected, resulting in low accuracy and the possibility of false positives. Some existing workbenches have fixed supports that cannot be adjusted. Furthermore, during the testing of mercury sphygmomanometers, mercury leakage can occur due to dirt or air gaps in the mercury column glass tube. Mercury is toxic and difficult to clean, and existing devices lack necessary protective and cleaning mechanisms, posing a significant risk. Summary of the Invention

[0004] The purpose of this invention is to provide an isolated automatic calibration device for mercury sphygmomanometers, in order to solve the problems mentioned in the background art, such as the inability to calibrate accessories, low accuracy, high risk, and lack of necessary protection and mercury cleaning mechanisms.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an isolated automatic calibration device for a mercury sphygmomanometer, characterized in that it includes a workbench mechanism, the workbench mechanism including a support base and a workbench, a pressurizing mechanism mounted on the upper side of the workbench mechanism, the pressurizing mechanism including a pressurizing pump, a sliding switch and a shock-absorbing pad; the pressurizing mechanism is connected to a pressure conversion module through a first output pipeline, the pressure conversion module including a first output pipeline, a first conversion module, a second output pipeline, an instrument output conversion module, a third output pipeline, an intermediate conversion module, a fourth output pipeline, an accessory output conversion module and a fifth output pipeline; both the accessory output conversion module and the fifth output pipeline are designed with... Output ports; the first adapter module is equipped with a main precision pressure gauge, the instrument output adapter module is equipped with an instrument output control knob, the intermediate adapter module is equipped with an intermediate adapter control knob, and the accessory output adapter module is equipped with an accessory output control knob and an accessory precision pressure gauge; a protective cover and a display mechanism are installed on the worktable, the display mechanism includes a camera, a camera control switch, a switch and a display bracket and a camera display; a mercury cleaning mechanism is installed on the worktable, the mercury cleaning mechanism includes four supports, a screw, a cleaning frame, a motor, a slide rod, a through-hole bearing, a bearing, a round nut, a closed bearing and a coupling; the cleaning frame includes a sliding bracket, an adapter frame and a cleaning brush.

[0006] As a preferred embodiment, the support base is installed with the threaded holes at the four corners of the workbench, and the lower end of the support base is designed with a corrugated structure; the upper surface of the workbench is silkscreened with the words "Instrument Placement Area" and "Accessory Placement Area". The "Instrument Placement Area" is used to place a mercury sphygmomanometer, and the "Accessory Placement Area" is used to place accessories such as arm cuffs and airbags.

[0007] As a preferred embodiment, the sliding switch is mounted on the pressure pump, and a shock-absorbing pad is bonded to the bottom surface of the lower end of the pressure pump. The pressure pump and the shock-absorbing pad are then mounted on the workbench using bolts. The surface of the pressure pump is silkscreened with the words "Indication Value," "Airtight," and "Off." The sliding switch has a stamped arrow. When the sliding arrow points to "Off," the pressure pump does not output pressure externally, but it also does not release pressure. When the sliding arrow points to "Airtight," airtightness and sensitivity can be verified. When the sliding arrow points to "Indication Value," the indication error can be verified according to a pre-selected number of points.

[0008] As a preferred embodiment, the first output pipeline connects the first adapter module to the pressurization pump, the second output pipeline connects the first adapter module to the intermediate adapter module, the third output pipeline connects the intermediate adapter module to the instrument output adapter module, the instrument output adapter module outputs pressure to the output port through the fifth output pipeline, and the fourth output pipeline connects the intermediate adapter module to the accessory output adapter module. The connections of the above pipelines and modules all use existing automotive pipeline plug-in technology.

[0009] The first adapter module is connected to the main precision pressure gauge via a thread;

[0010] The instrument output adapter module is marked with "Open" and "Closed". The output state is controlled by rotating the instrument output control knob. The upper surface of the instrument output control knob is stamped with an arrow shape. When the arrow of the instrument output control knob points to "Open", the instrument output adapter module is in an open circuit state, and the output pressure can be transmitted to the output port through the fifth output pipeline. When the arrow of the instrument output control knob points to "Closed", the instrument output adapter module is in a state of communication with the atmosphere.

[0011] The intermediate transfer module is silkscreened with the words "Main Test," "Off," and "Auxiliary Test." The output state is controlled by an intermediate transfer control knob, the upper surface of which is stamped with an arrow shape. When the arrow points to "Main Test," the pressure provided by the pressurizing pump is output to the instrument output transfer module via the intermediate transfer module. When the arrow points to "Closed," the intermediate transfer module is in a state of communication with the atmosphere, and the output pressure provided by the pressurizing pump is no longer output to other modules. When the arrow points to "Auxiliary Test," the output pressure provided by the pressurizing pump is output to the accessory output transfer module via the intermediate transfer module.

[0012] The accessory output adapter module is threadedly connected to the precision pressure gauge and has an output port on one side. The output port can be connected to the tested accessory via the sphygmomanometer cuff rubber tubing. The tested accessory includes accessories such as the cuff and air bladder. The accessory output adapter module is marked with "Open" and "Pressure Holding". The output state is controlled by the accessory output control knob. The upper surface of the accessory output control knob is stamped with an arrow shape. When the arrow of the accessory output control knob points to "Open", the accessory output adapter module is in an open circuit state, and the output pressure can be transmitted to the output port of the accessory output adapter module. When the arrow of the accessory output control knob points to "Pressure Holding", the accessory output adapter module is in a closed state, not connected to other modules or to the atmosphere, and is in a sealed pressure holding state.

[0013] As a preferred embodiment, four guide posts are welded to the upper left surface of the workbench, and their positions correspond to the protective cover; the protective cover is formed by sheet metal forming and then completed by welding, electrophoresis and other processes, and sealing foam is pasted on the side in contact with the workbench.

[0014] As a preferred embodiment, after the protective cover is installed, the camera is located within the sealed space formed by the protective cover and the workbench; the camera control switch and the camera display are installed on the outside of the protective cover; the camera control switch is designed with three buttons "1", "2" and "3", button "1" adjusts the camera shooting angle upward, button "2" adjusts the camera shooting angle downward, and button "3" is used for taking and storing photos; the control and data transmission between the camera, camera control switch and camera display are realized through Bluetooth.

[0015] As a preferred embodiment, the four bearings of the mercury cleaning mechanism are respectively placed in the corresponding round holes of the four supports, the slide rod is installed through the two supports on the left, the screw rod is installed through the two supports on the right, and round nuts are threaded on the upper ends of the slide rod and the screw rod.

[0016] The upper end of the mercury cleaning mechanism has two supports with two through-hole bearings threaded on them, which axially fix the outer and inner rings of the bearing, respectively. The lower left end has a support with a closed bearing threaded on it, which axially fixes the outer and inner rings of the bearing, respectively. One end of the screw at the lower right end is connected to the output end of the motor via a coupling, and the axial fixation of the bearing is achieved by the screw's shoulder and the support.

[0017] The mercury cleaning mechanism has a cleaning frame installed through two through holes of a sliding bracket. One end of the sliding bracket is connected to a sliding rod, and the other end has a thread designed to mate with a screw rod for installation. The sliding bracket and the adapter are connected by a snap-fit, and the adapter and the cleaning brush are bonded together with structural adhesive.

[0018] An automatic calibration method for a mercury sphygmomanometer, based on the aforementioned isolated automatic calibration device for a mercury sphygmomanometer, is characterized by including zero-point error and sensitivity calibration.

[0019] The zero-position error verification steps are as follows:

[0020] Place the mercury sphygmomanometer in the instrument placement area of ​​the workbench, and connect the mercury bottle of the mercury sphygmomanometer and the output port of the fifth output line through a rubber tube;

[0021] Slide the slide switch of the booster pump to the position where the arrow points to "off", and rotate the instrument output control knob on the instrument output adapter module to make its arrow point to "closed". At this time, the mercury sphygmomanometer is connected to the atmosphere.

[0022] Press button "2" on the camera to adjust the camera angle downwards, and observe the blood pressure monitor's zero reading on the camera display. Press button "3" to take a picture and record it.

[0023] Through formula The zero-point error of the sphygmomanometer was calculated. According to the verification procedure, the zero-point error is passed. Determine whether the zero-point error calibration result of the blood pressure monitor is qualified;

[0024] The sensitivity testing steps are as follows:

[0025] Keep the blood pressure monitor in the same position as in the above steps, and keep the protective cover installed as before;

[0026] Press button "1" on the camera to adjust the camera's shooting angle upwards, adjusting it to the range of 26kPa to 32kPa.

[0027] Rotate the intermediate transfer control knob on the intermediate transfer module so that its arrow points to "Main Measurement", and rotate the instrument output control knob on the instrument output transfer module so that its arrow points to "On".

[0028] Slide the slide switch on the pressure pump until the arrow points to "airtight". At this time, the pressure pump will output pressure up to 38 kPa according to the set pressure. While pressurizing, observe the value of the main precision pressure gauge. When the main precision pressure gauge shows that the pressure has reached 38 kPa, slide the slide switch until the arrow points to "off" to maintain the pressure.

[0029] Rotate the instrument's output control knob until its arrow points to "Off". The overall pressure will begin to release at the instrument's output adapter module. Simultaneously observe the camera display. When the mercury column in the sphygmomanometer is between 26 kPa and 32 kPa, quickly rotate the instrument's output control knob until its arrow points to "On". Observe the fluctuation of the mercury column in the sphygmomanometer on the camera display after the arrow on the output control knob points to "On". ;

[0030] Then rotate the instrument output control knob so that its arrow points to "off", and the overall pressure begins to release to zero at the instrument output adapter module;

[0031] According to the verification procedure requirements, the fluctuation value is used. Determine whether the sensitivity test results of the blood pressure monitor are qualified.

[0032] An automatic calibration method for a mercury sphygmomanometer, based on the aforementioned isolated automatic calibration device for a mercury sphygmomanometer, is characterized by further including an airtightness test, wherein the airtightness test includes the following steps:

[0033] Keep the instrument in the above-mentioned position and adjustment state unchanged, and at the same time place the blood pressure monitor accessories, including the air bag and arm cuff, in the "accessory placement area" on the workbench. At the same time, use the rubber hose that comes with the arm cuff or an optional rubber hose to connect the output port of the accessory output adapter module to the arm cuff.

[0034] Rotate the intermediate transfer control knob on the intermediate transfer module so that its arrow points to "attachment"; rotate the accessory output control knob on the accessory output transfer module so that its arrow points to "on".

[0035] Slide the slider switch until the arrow points to "airtight". At this time, the pressurizing pump will output pressure up to 38 kPa according to the set pressure. While pressurizing, observe the value of the main precision pressure gauge. When the main precision pressure gauge shows that the pressure has reached 38 kPa, slide the slider switch until the arrow points to "off" to maintain pressure.

[0036] To accurately measure the airtightness of the accessory, rotate the accessory output control knob until its arrow points to "Pressure Holding," observe the pressure drop on the precision pressure gauge, and record the drop value. ;

[0037] Then rotate the intermediate transfer control knob so that its arrow points to "off", and rotate the accessory output control knob so that its arrow points to "on". The overall pressure is released to zero at the intermediate transfer module.

[0038] According to the verification procedure requirements, the value was decreased. Determine whether the airtightness test results of the blood pressure monitor accessories are qualified;

[0039] Rotate the intermediate transfer control knob on the intermediate transfer module so that its arrow points to "Main Measurement", and rotate the instrument output control knob on the instrument output transfer module so that its arrow points to "On".

[0040] Press button "1" on the camera to adjust the camera's shooting angle upwards, adjusting it to the range of 26kPa to 32kPa.

[0041] Slide the sliding switch on the pressurizing pump until the arrow points to "airtight". At this time, the pressurizing pump will output pressure up to 38 kPa according to the set pressure. While pressurizing, observe the value of the main precision pressure gauge. When the main precision pressure gauge shows that the pressure has reached 38 kPa, slide the sliding switch until the arrow points to "off" to maintain the pressure for 2 minutes.

[0042] Starting from the 3rd minute, observe and record the decrease in the value displayed on the camera monitor. ;

[0043] Then rotate the instrument output control knob so that its arrow points to "off", and the overall pressure begins to release to zero at the instrument output adapter module;

[0044] According to the verification procedure requirements, the value was decreased. Determine whether the airtightness test results of the sphygmomanometer are qualified.

[0045] An automatic calibration method for a mercury sphygmomanometer, based on the aforementioned isolated automatic calibration device for a mercury sphygmomanometer, is characterized by further including indication error calibration, wherein the indication error calibration includes the following steps:

[0046] Keep the above-mentioned instruments in their original position and adjustment state unchanged;

[0047] First pressure reduction test procedure:

[0048] Rotate the intermediate transfer control knob on the intermediate transfer module so that its arrow points to "Main Measurement", and rotate the instrument output control knob on the instrument output transfer module so that its arrow points to "On".

[0049] Adjust the camera's shooting angle using buttons "1" and "2" on the camera to cover the five verification points for calibrating the pressure pump's setting;

[0050] When the slide switch on the sliding pressurization pump is set to the arrow indicating "indication value", the pressurization pump will pressurize to the highest calibration point according to the setting, and then perform pressure reduction calibration point by point, maintaining the pressure at each calibration point for 30 seconds, until the pressure reduction calibration of five calibration points is completed. At the same time, the pressurization pump will automatically reduce to zero, and the reading on the main precision pressure gauge will be recorded at each calibration point. Then, by observing and recording the values ​​displayed on the camera monitor. ;

[0051] After the first pressure reduction test is completed, the pressurization pump will automatically perform a second pressure reduction test after 1 minute, according to the settings.

[0052] Second pressure reduction verification procedure:

[0053] After the first pressure reduction test, the instrument remains in the same state. The pressurization pump will then perform a second pressure reduction test according to the settings. Following the same steps as the first test, the pressurization pump will pressurize to the highest test point and maintain that pressure for 1 minute. Then, pressure reduction tests will be performed point by point, maintaining pressure for 30 seconds at each point until all five test points are completed. The pressurization pump will then automatically reduce to zero, and the reading on the main precision pressure gauge will be recorded at each test point. Then, by observing and recording the values ​​displayed on the camera monitor. ;

[0054] Then slide the slider switch so that its arrow points to "off", rotate the instrument output control knob so that its arrow points to "off", rotate the intermediate adapter control knob so that its arrow points to "off", and the verification steps are completed;

[0055] According to the formula The indication error at each verification point is calculated, and the indication error is used according to the verification procedure requirements. Determine whether the reading error calibration result of the blood pressure monitor is qualified.

[0056] The beneficial effects of adopting the above structure in this invention are as follows:

[0057] 1. The workbench legs have been changed from fixed legs to four-point threaded support seats, which can be adjusted to be horizontal or workbench position, expanding the working application scenarios; clear markings have been added to the pressure pump sliding switch and other module knobs through a combination of silk screen printing and stamped arrows to reduce the risk of misoperation.

[0058] 2. A verification structure for accessories (including armbands, tubing, and airbags) was set up, and a direct comparison method was used to verify the standard instrument using a precision pressure gauge, which improved the verification accuracy of accessories;

[0059] 3. The design of the protective cover and display mechanism avoids direct contact with the sphygmomanometer during the calibration process, reducing the risk of mercury contamination. It is also equipped with a mercury cleaning mechanism, which can automatically clean up the mercury and store it in the mercury collection box in the event of a mercury leak, thereby improving the efficiency and automation of mercury cleaning. Attached Figure Description

[0060] Figure 1 This is a schematic diagram of the overall assembly structure of the present invention.

[0061] Figure 2 This is a schematic diagram of the front view of the present invention without the instrument under test placed.

[0062] Figure 3 This is a top view of the structure of the present invention without the instrument under test.

[0063] Figure 4 This is a schematic diagram of the structure of the present invention without the instrument under test, viewed from below.

[0064] Figure 5 This is a schematic diagram of the axial structure of the present invention without placing the instrument under test;

[0065] Figure 6 This is a schematic diagram of the exploded structure of the present invention without the instrument under test.

[0066] Figure 7 This is a schematic diagram of the axial structure of the mercury cleaning mechanism of the present invention;

[0067] Figure 8 This is an enlarged schematic diagram of a portion of the mercury cleaning mechanism of the present invention;

[0068] Figure 9 This is a cross-sectional view of the mercury cleaning mechanism of the present invention.

[0069] In the diagram: 1. Workbench mechanism; 11. Support base; 12. Workbench; 2. Blood pressure monitor accessory; 3. Pressurization mechanism; 31. Pressurization pump; 32. Slide switch; 33. Shock-absorbing pad; 4. Standard; 41. Main precision pressure gauge; 42. Auxiliary precision pressure gauge; 5. Protective cover; 6. Display mechanism; 61. Camera; 62. Camera control switch; 63. Switch and display bracket; 64. Camera display; 7. Pressure conversion module; 71. First output pipeline; 72. First conversion module; 73. Second output pipeline; 74. Instrument output conversion module; 75. Third output pipeline; 76. Intermediate conversion module; 77. Fourth output pipeline; 78. Accessory output conversion module; 791. Instrument output control knob; 792. Intermediate conversion control knob; 793. Accessory output control knob; 710. Fifth output pipeline; 8. Mercury collection box; 9. Mercury cleaning mechanism; 91. Support; 92. Screw; 93. Cleaning frame; 931. Sliding bracket; 932. Adapter frame; 933. Cleaning brush; 94. Motor; 95. Slide rod; 96. Through-hole bearing; 97. Bearing; 98. Round nut; 99. Enclosed bearing; 910. Coupling. Detailed Implementation

[0070] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0071] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, and back, are based on the directions shown in the figures of this invention, and are explained here together.

[0072] like Figure 1-9The illustrated isolated automatic calibration device for a mercury sphygmomanometer includes a workbench mechanism 1, which comprises a support base 11 and a workbench 12. A pressurizing mechanism 3 is mounted on the upper side of the workbench mechanism 1. The pressurizing mechanism 3 includes a pressurizing pump 31, a sliding switch 32, and a shock-absorbing pad 33. The pressurizing mechanism 3 is connected to a pressure conversion module 7 via a first output pipe 71. The pressure conversion module 7 includes a first output pipe 71, a first conversion module 72, a second output pipe 73, an instrument output conversion module 74, a third output pipe 75, an intermediate conversion module 76, a fourth output pipe 77, an accessory output conversion module 78, and a fifth output pipe 710. Both the accessory output conversion module 78 and the fifth output pipe 710 are designed with output ports. A main precision pressure gauge 41 is mounted on the first conversion module 72. The instrument output adapter module 74 is equipped with an instrument output control knob 791, the intermediate adapter module 76 is equipped with an intermediate adapter control knob 792, and the accessory output adapter module 78 is equipped with an accessory output control knob 793 and an accessory precision pressure gauge 42. The workbench 12 is equipped with a protective cover 5 and a display mechanism 6. The display mechanism 6 includes a camera 61, a camera control switch 62, a switch and display bracket 63, and a camera display 64. The workbench 12 is equipped with a mercury cleaning mechanism 9. The mercury cleaning mechanism 9 includes four supports 91, a screw 92, a cleaning frame 93, a motor 94, a slide rod 95, a through-hole bearing 96, a bearing 97, a round nut 98, a closed bearing 99, and a coupling 910. The cleaning frame 93 includes a sliding bracket 931, an adapter frame 932, and a cleaning brush 933.

[0073] In this embodiment of the invention, the support base 11 is installed with the threaded holes at the four corners of the workbench 12. The lower end of the support base 11 is designed with a corrugated structure, which makes it easy to tighten or loosen by hand. The horizontal state of the workbench 12 can be adjusted by the support base 11 installed at each corner. The horizontal state of the workbench 12 can be determined by visual inspection or by using the horizontal display device on an existing electronic scale. The upper surface of the workbench 12 is silkscreened with the words "Instrument Placement Area" and "Accessory Placement Area". The "Instrument Placement Area" is used to place a mercury sphygmomanometer, and the "Accessory Placement Area" is used to place accessories such as arm cuffs and air bags. The use of text markings is conducive to intuitive observation and avoids confusion in the placement of instruments and accessories.

[0074] In this embodiment of the invention, the sliding switch 32 is mounted on the pressure pump 31. A shock-absorbing pad 33 is bonded to the bottom surface of the lower end of the pressure pump 31, and the pressure pump 31 and the shock-absorbing pad 33 are mounted on the workbench 12 by bolts. Adding the shock-absorbing pad 33 between the pressure pump 31 and the workbench 12 can alleviate the impact of the vibration of the pressure pump 31 during pressurization on the standard 4 and the instrument under test. The pressure pump 31 is silkscreened with the words "indication value", "airtight", and "off". The sliding switch 32 is printed with a stamped arrow. When the sliding arrow points to "off", the pressure pump 31 does not output pressure to the outside, but it will not depressurize either. When the sliding arrow points to "airtight", airtightness and sensitivity can be checked. When the sliding arrow points to "indication value", the indication error can be checked according to the pre-selected number of points. All the above silkscreened words can also be given by pasting labels or directly stamping on the structure for easy observation by the operator.

[0075] In this embodiment of the invention, the first output pipeline 71 connects the first adapter module 72 to the pressurizing pump 31; the second output pipeline 73 connects the first adapter module 72 to the intermediate adapter module 76; the third output pipeline 75 connects the intermediate adapter module 76 to the instrument output adapter module 74; the instrument output adapter module 74 outputs pressure to the output port through the fifth output pipeline 710; and the fourth output pipeline 77 connects the intermediate adapter module 76 to the accessory output adapter module 78. All of the above pipelines are integrally formed from PA66 material or are flexible pipelines made of aluminum alloy, and the pipeline joints adopt a rotary thread connection structure; the pipeline joints can also adopt the plug-in connector type commonly used in thermal management systems in the automotive industry; both of the above pipeline connection methods are existing technologies and can achieve good sealing and testing under harsh environments such as vibration.

[0076] The first adapter module 72 is connected to the main precision pressure gauge 41 via a thread;

[0077] The instrument output adapter module 74 is marked with "Open" and "Closed". The output state is controlled by rotating the instrument output control knob 791. The upper surface of the instrument output control knob 791 is marked with an arrow. When the arrow of the instrument output control knob 791 points to "Open", the instrument output adapter module 74 is in an open circuit state, and the output pressure can be transmitted to the output port through the fifth output pipeline 710. When the arrow of the instrument output control knob 791 points to "Closed", the instrument output adapter module 74 is in a state of communication with the atmosphere.

[0078] The intermediate transfer module 76 is silkscreened with the words "Main Test", "Off", and "Auxiliary Test". The output state is controlled by the intermediate transfer control knob 792. The upper surface of the intermediate transfer control knob 792 is stamped with an arrow shape. When the arrow of the intermediate transfer control knob 792 points to "Main Test", the pressure pump 31 provides output pressure and outputs it to the instrument output transfer module 74 through the intermediate transfer module 76. When the arrow of the intermediate transfer control knob 792 points to "Closed", the intermediate transfer module 76 is in a state of communication with the atmosphere, and the output pressure provided by the pressure pump 31 is no longer output to other modules. When the arrow of the intermediate transfer control knob 792 points to "Auxiliary Test", the output pressure provided by the pressure pump 31 is output to the accessory output transfer module 78 through the intermediate transfer module 76.

[0079] The accessory output adapter module 78 is connected to the precision pressure gauge 42 via a thread, and has an output port on one side. The output port can be connected to the tested accessory via the sphygmomanometer cuff rubber tubing. The tested accessory includes accessories such as the cuff and air bladder. The accessory output adapter module 78 is silkscreened with the words "Open" and "Pressure Holding". The output state is controlled by the accessory output control knob 793. The upper surface of the accessory output control knob 793 is stamped with an arrow shape. When the arrow of the accessory output control knob 793 points to "Open", the accessory output adapter module 78 is in an open circuit state, and the output pressure can be transmitted to the output port of the accessory output adapter module 78. When the arrow of the accessory output control knob 793 points to "Pressure Holding", the accessory output adapter module 78 is in a closed state, not connected to other modules or to the atmosphere, and is in a sealed pressure holding state.

[0080] In this embodiment of the invention, four guide posts are welded to the upper left surface of the workbench 12. The guide posts can also be installed by riveting or bonding. Their positions correspond to the four through holes designed in the protective cover 5. The protective cover 5 is made of sheet metal and then completed by welding, electrophoresis and other processes. Sealing foam is pasted on the side in contact with the workbench 12. The protective cover 5 and the workbench 12 are not installed by bolt tightening, which helps to quickly replace the blood pressure monitor being tested after the calibration is completed. Through the weight of the protective cover 5 itself and the thickness design of the sealing foam, the protective cover 5 forms an IP67 level sealed space after installation, which greatly reduces the risk of vapor leakage after mercury eruption.

[0081] In this embodiment of the invention, after the protective cover 5 is installed, the camera 61 of the display mechanism 6 is located within the sealed space formed by the protective cover 5 and the worktable 12. The camera control switch 62 and the camera display 64 are installed on the outside of the protective cover 5. The switch and display bracket 63 is used to fix the camera control switch 62 and the camera display 64 to ensure display stability. The camera control switch 62 is designed with three buttons: "1", "2", and "3". Button "1" adjusts the shooting angle of the camera 61 to move upward, button "2" adjusts the shooting angle of the camera 61 to move downward, and button "3" is used for taking and storing photos. The control and data transmission between the camera 61, the camera control switch 62, and the camera display 64 are realized through Bluetooth. The installation of each component of the display mechanism 6 is achieved by bolting the corresponding brackets onto the worktable 12, or by using snap-fit ​​or welding.

[0082] In this embodiment of the invention, reference Figures 7-9 The four bearings 97 of the mercury cleaning mechanism 9 are respectively placed in the corresponding round holes of the four supports 91. The slide rod 95 is installed through the two supports 91 on the left side, and the screw rod 92 is installed through the two supports 91 on the right side. A round nut 98 is threaded on the upper end of both the slide rod 95 and the screw rod 92. The round nut 98 is used for axial installation and fixation of the slide rod 95 and the screw rod 92. Other forms of fixation such as elastic retaining rings can also be used.

[0083] Two supports 91 at the upper end of the mercury cleaning mechanism 9 are threadedly fitted with two through-hole bearing bushes 96, which axially fix the outer and inner rings of the bearing 97, respectively. A support 91 at the lower left end is threadedly fitted with a closed bearing bush 99, which axially fixes the outer and inner rings of the bearing 97, respectively. One end of the screw 92 at the lower right end is connected to the output end of the motor 94 through a coupling 910, and the axial fixation of the bearing 97 is achieved through the shoulder of the screw 92 and the support 91.

[0084] The mercury cleaning mechanism 9 has a cleaning frame 93 installed on it through two through holes in a sliding bracket 931. One end of the sliding bracket 931 is threaded through to a slide rod 95, while the other end has a threaded connection to a screw 92 for threaded installation. The sliding bracket 931 is connected to the adapter 932 via a snap-fit, and the adapter 932 is bonded to the cleaning brush 933 with structural adhesive. The snap-fit ​​connection can be as follows: Figure 9The design shown is a through-type buckle, which can also be changed to an intermittent buckle design; the cleaning brush 933 is a consumable part and can be replaced as a whole with the adapter 932; the above mercury cleaning mechanism 9 can automatically and quickly clean the mercury in the instrument placement area. The cleaning brush 933 is a bristle brush or a rubber brush that makes interference contact with the horizontal surface of the instrument placement area and can clean the leaked mercury in one direction to the mercury collection box 8 placed under the workbench 12; the mercury collection box 8 is a glass container and does not react chemically with mercury.

[0085] Working principle: An automatic calibration method for a mercury sphygmomanometer, using an isolated automatic calibration device for mercury sphygmomanometers according to this embodiment to calibrate zero-point error and sensitivity;

[0086] The zero-position error verification steps are as follows:

[0087] Place the mercury sphygmomanometer in the instrument placement area of ​​the workbench 12, and connect the mercury bottle of the mercury sphygmomanometer and the output port of the fifth output line 710 through a rubber tube.

[0088] Slide the slide switch 32 of the pressurization pump 31 to the position where the arrow points to "off", and rotate the instrument output control knob 791 on the instrument output adapter module 74 so that its arrow points to "closed". At this time, the mercury sphygmomanometer is connected to the atmosphere.

[0089] Press button "2" on camera 61 to adjust the camera 61's shooting angle downwards, and observe the blood pressure monitor's zero-point reading through the camera display 64. Press button "3" to take a picture and record it.

[0090] Through formula The zero-point error of the sphygmomanometer was calculated. According to the verification procedure, the zero-point error is passed. Determine whether the zero-point error calibration result of the blood pressure monitor is qualified;

[0091] The sensitivity testing steps are as follows:

[0092] Keep the blood pressure monitor in the same position as in the above steps, and keep the protective cover 5 installed as before;

[0093] Press button "1" on camera 61 to adjust the shooting angle of camera 61 upwards to the range of 26kPa to 32kPa.

[0094] Rotate the intermediate transfer control knob 792 on the intermediate transfer module 76 so that its arrow points to "Main Measurement", and rotate the instrument output control knob 791 on the instrument output transfer module 74 so that its arrow points to "On".

[0095] When the sliding switch 32 on the sliding pressurizing pump 31 is moved to the "airtight" position, the pressurizing pump 31 will output pressure up to 38 kPa according to the set pressure. While pressurizing, observe the reading of the main precision pressure gauge 41. When the main precision pressure gauge 41 shows that the pressure has reached 38 kPa, slide the sliding switch 32 to the "off" position to maintain the pressure.

[0096] Rotate the instrument output control knob 791 until its arrow points to "Off". The overall pressure will begin to release at the instrument output adapter module 74. Simultaneously observe the camera display 64. When the mercury column in the sphygmomanometer is between 26 kPa and 32 kPa, quickly rotate the instrument output control knob 791 until its arrow points to "On". Observe the fluctuation value of the mercury column in the sphygmomanometer on the camera display 64 after the arrow of the instrument output control knob 791 points to "On". ;

[0097] Then rotate the instrument output control knob 791 so that its arrow points to "off", and the overall pressure begins to release to zero at the instrument output adapter module 74.

[0098] According to the verification procedure requirements, the fluctuation value is used. Determine whether the sensitivity test results of the blood pressure monitor are qualified.

[0099] In addition, the airtightness test using an isolated automatic calibration device for a mercury sphygmomanometer according to this embodiment includes the following steps:

[0100] Keep the instrument in its current position and adjustment state, and place the blood pressure monitor accessories, including the air bag and cuff, in the "accessory placement area" on the workbench 12. At the same time, use the rubber hose that comes with the cuff or an optional rubber hose to connect the output port of the accessory output adapter module 78 to the cuff.

[0101] Rotate the intermediate transition control knob 792 on the intermediate transition module 76 so that its arrow points to "attachment"; rotate the accessory output control knob 793 on the accessory output transition module 78 so that its arrow points to "on".

[0102] Slide the sliding switch 32 until its arrow points to "airtight". At this time, the pressurizing pump 31 will output pressure to 38 kPa according to the set pressure. While pressurizing, observe the reading of the main precision pressure gauge 41. When the main precision pressure gauge 41 shows that the pressure has reached 38 kPa, slide the sliding switch 32 until its arrow points to "off" to maintain pressure.

[0103] To accurately measure the airtightness of the accessory, rotate the accessory output control knob 793 until its arrow points to "pressure holding," observe the pressure drop value on the precision pressure gauge 42, and record the drop value. ;

[0104] Then rotate the intermediate transfer control knob 792 so that its arrow points to "off", and rotate the accessory output control knob 793 so that its arrow points to "on". The overall pressure is released to zero at the intermediate transfer module 76.

[0105] According to the verification procedure requirements, the value was decreased. Determine whether the airtightness test results of the blood pressure monitor accessories are qualified;

[0106] Rotate the intermediate transfer control knob 792 on the intermediate transfer module 76 so that its arrow points to "Main Measurement", and rotate the instrument output control knob 791 on the instrument output transfer module 74 so that its arrow points to "On".

[0107] Press button "1" on camera 61 to adjust the shooting angle of camera 61 upwards to the range of 26kPa to 32kPa.

[0108] When the sliding switch 32 on the sliding pressurizing pump 31 is set to "airtight", the pressurizing pump 31 will output pressure to 38 kPa according to the set pressure. While pressurizing, observe the reading of the main precision pressure gauge 41. When the main precision pressure gauge 41 shows that the pressure has reached 38 kPa, slide the sliding switch 32 to "off" to maintain pressure for 2 minutes.

[0109] Starting from the 3rd minute, observe and record the decrease in the value displayed on camera monitor 64. ;

[0110] Then rotate the instrument output control knob 791 so that its arrow points to "off", and the overall pressure begins to release to zero at the instrument output adapter module 74.

[0111] According to the verification procedure requirements, the value was decreased. Determine whether the airtightness test results of the sphygmomanometer are qualified.

[0112] Specifically, the indication error is verified using an isolated automatic calibration device for a mercury sphygmomanometer according to this embodiment. The indication error verification includes the following steps:

[0113] Keep the instrument in its original position and adjustment state unchanged;

[0114] First pressure reduction test procedure:

[0115] Rotate the intermediate transfer control knob 792 on the intermediate transfer module 76 so that its arrow points to "Main Measurement", and rotate the instrument output control knob 791 on the instrument output transfer module 74 so that its arrow points to "On".

[0116] The shooting angle of the camera 61 can be adjusted by using buttons "1" and "2" on the camera 61, covering the five verification points for the indication verification set by the pressure pump 31;

[0117] When the slide switch 32 on the sliding pressurizing pump 31 is set to the arrow indicating "indication value", the pressurizing pump 31 will pressurize to the highest calibration point according to the setting, and then perform depressurization calibration point by point, maintaining the pressure for 30 seconds at each calibration point until the depressurization calibration of five calibration points is completed. At the same time, the pressurizing pump 31 will automatically reduce to zero, and record the indication on the main precision pressure gauge 41 at each calibration point. Then, by observing and recording the values ​​displayed on the camera monitor 64 ;

[0118] After the first pressure reduction test is completed, the pressurization pump 31 will automatically perform the second pressure reduction test after 1 minute, according to the settings.

[0119] Second pressure reduction verification procedure:

[0120] After the first pressure reduction test is completed, the instrument remains in the same state. The pressurizing pump 31 will perform a second pressure reduction test according to the settings. The same steps as the first pressure reduction test will be followed. The pressurizing pump 31 will pressurize to the highest test point and hold the pressure at the highest test point for 1 minute. Then, the pressure reduction test will be performed point by point, and the pressure will be held at each test point for 30 seconds until the pressure reduction test of five test points is completed. The pressurizing pump 31 will automatically reduce to zero and record the reading on the main precision pressure gauge 41 at each test point. Then, by observing and recording the values ​​displayed on the camera monitor 64 ;

[0121] Then slide the slide switch 32 until its arrow points to "off", rotate the instrument output control knob 791 until its arrow points to "off", rotate the intermediate transfer control knob 792 until its arrow points to "off", and the verification steps are completed;

[0122] According to the formula The indication error at each verification point is calculated, and the indication error is used according to the verification procedure requirements. Determine whether the reading error calibration result of the blood pressure monitor is qualified.

[0123] The national metrological verification procedure JJG270-2008 "Sphygmomanometers and sphygmomanometers" is the basis for the above verification items and result judgments.

[0124] As a preferred option, the first adapter module 72, the instrument output adapter module 74, the intermediate adapter module 76 and the accessory output adapter module 78 are all designed with internal piping structures that can be used with corresponding knobs. The connection between each of the above modules and the workbench 12 can be achieved by electric welding with welding adhesive or by direct structural adhesive bonding. Both of these methods must ensure that their sealing and pressure resistance meet the requirements of the verification procedure.

[0125] As a preferred option, the rubber tubing used in the above-mentioned testing method is made of the same material and has the same specifications as the rubber tubing used in existing mercury sphygmomanometers, which can ensure the sealing after connection.

[0126] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An isolated automatic verification device for mercury sphygmomanometers, characterized in that, The application relates to a blood pressure measuring device, which comprises a workbench mechanism (1), wherein the workbench mechanism (1) comprises a supporting base (11) and a workbench (12), the upper side of the workbench mechanism (1) is provided with a pressurizing mechanism (3), the pressurizing mechanism (3) comprises a pressurizing pump (31), a sliding switch (32) and a damping pad (33), the pressurizing mechanism (3) is connected with a pressure switching module (7) through a first output pipeline (71), the pressure switching module (7) comprises a first switching module (72), a second output pipeline (73), an instrument output switching module (74), a third output pipeline (75), an intermediate switching module (76), a fourth output pipeline (77), an accessory output switching module (78) and a fifth output pipeline (710), the accessory output switching module (78) and the fifth output pipeline (710) are provided with output ports, a main precision pressure gauge (41) is arranged on the first switching module (72), an instrument output control knob (791) is arranged on the instrument output switching module (74), an intermediate switching control knob (792) is arranged on the intermediate switching module (76), an accessory output control knob (793) and an auxiliary precision pressure gauge (42) are arranged on the accessory output switching module (78), and the accessory output switching module (78) is provided with an output port for connecting an arm band and an air bag accessory, a protective cover (5) and a display mechanism (6) are arranged on the workbench (12), the protective cover (5) is provided with sealing foam on the side in contact with the workbench (12) and is used for forming a sealed space with the workbench (12), the display mechanism (6) comprises a camera (61), a camera control switch (62), a switch and a display support (63) and a camera display (64), the camera (61) is arranged in the sealed space formed by the protective cover (5) and the workbench (12) after being arranged on the protective cover (5), the camera control switch (62) and the camera display (64) are arranged on the outside of the protective cover (5), a mercury cleaning mechanism (9) is arranged on the workbench (12), the mercury cleaning mechanism (9) comprises four supports (91), a screw rod (92), a cleaning frame (93), a motor (94), a sliding rod (95), a through-hole bearing bush (96), a bearing (97), a round nut (98), a closed bearing bush (99) and a shaft coupling (910), the cleaning frame (93) comprises a sliding support (931), a switching frame (932) and a cleaning brush (933), the cleaning brush (933) is a rubber brush in interference contact with the horizontal plane of the instrument placing area and is used for cleaning the leaked mercury to a mercury collecting box (8) arranged below the workbench (12) in one direction.

2. An isolated automatic verification device for mercury sphygmomanometer according to claim 1, characterized in that, The supporting base (11) is installed in threaded holes at four corners of the workbench (12), and the lower end of the supporting base (11) is designed as a corrugated structure; the upper surface of the workbench (12) is silk-screen printed with "instrument placing area" and "accessory placing area", the "instrument placing area" is used for placing a mercury sphygmomanometer, and the "accessory placing area" is used for placing an arm band or an air bag.

3. An isolated automatic verification device for mercury sphygmomanometer according to claim 1, characterized in that, The sliding switch (32) is installed on the pressurizing pump (31), the lower end bottom surface of the pressurizing pump (31) is bonded with a shock pad (33), and the pressurizing pump (31) and the shock pad (33) are installed on the workbench (12) through bolts; the surface of the pressurizing pump (31) is silk-screen printed with "indication", "airtightness" and "off" characters, the sliding switch (32) is stamped with an arrow, when the sliding arrow points to "off", the pressurizing pump (31) does not output pressure to the outside, but also does not leak; when the sliding arrow points to "airtightness", the air tightness and sensitivity can be detected, and when the sliding arrow points to "indication", the indication error is detected according to the preselected point.

4. An isolated automatic verification device for mercury sphygmomanometer according to claim 1, characterized in that, The first output pipeline (71) connects the first switching module (72) with the pressurizing pump (31), the second output pipeline (73) connects the first switching module (72) with the intermediate switching module (76), the third output pipeline (75) connects the intermediate switching module (76) with the instrument output switching module (74), the instrument output switching module (74) outputs pressure to the output port through the fifth output pipeline (710), and the fourth output pipeline (77) connects the intermediate switching module (76) with the accessory output switching module (78); the connection of the pipelines and the modules adopts the existing automobile pipeline plug-in technology; The first switching module (72) is connected with the main precision pressure gauge (41) through threads; The instrument output switching module (74) is silk-screen printed with "on" and "off" characters, and the output state is controlled by rotating the instrument output control knob (791); the upper surface of the instrument output control knob (791) is stamped with an arrow shape, when the arrow direction of the instrument output control knob (791) is rotated to "on", the instrument output switching module (74) is in an open circuit state, and the output pressure can be conducted to the output port through the fifth output pipeline (710); when the arrow direction of the instrument output control knob (791) is rotated to "off", the instrument output switching module (74) is in an atmospheric communication state; The intermediate switching module (76) is silk-screen printed with "main measurement", "off" and "accessory measurement" characters, and the output state is controlled by the intermediate switching control knob (792); the upper surface of the intermediate switching control knob (792) is stamped with an arrow shape, when the arrow direction of the intermediate switching control knob (792) is rotated to "main measurement", the pressurizing pump (31) provides output pressure and outputs the output pressure to the instrument output switching module (74) through the intermediate switching module (76); when the arrow direction of the intermediate switching control knob (792) is rotated to "off", the intermediate switching module is in an atmospheric communication state, and the output pressure provided by the pressurizing pump (31) is no longer output to other modules; when the arrow direction of the intermediate switching control knob (792) is rotated to "accessory measurement", the output pressure provided by the pressurizing pump (31) is output to the accessory output switching module (78) through the intermediate switching module (76); The accessory output switching module (78) is connected with the precision pressure gauge (42) through threads, the accessory output switching module (78) is silk-screen printed with "open" and "pressure maintaining" words, the output state is controlled through the accessory output control knob (793), the upper surface of the accessory output control knob (793) is steel-printed with an arrow shape, when the arrow direction of the accessory output control knob (793) is rotated to "open", the accessory output switching module (78) is in an open circuit state, and the output pressure can be conducted to the output port of the accessory output switching module (78); when the arrow direction of the accessory output control knob (793) is rotated to "pressure maintaining", the accessory output switching module (78) is in a closed state, is not connected with other modules, and is not connected with the atmosphere, and is in a sealed pressure maintaining state.

5. An isolated automatic verification device for mercury sphygmomanometer according to claim 1, characterized in that, Four guide columns are welded on the upper surface of the left side of the workbench (12) and correspond to the protective cover (5); the protective cover (5) is formed by sheet metal and is completed through a welding electrophoresis process.

6. An isolated automatic verification device for mercury sphygmomanometer according to claim 1, characterized in that, The camera control switch (62) is designed with three buttons, "1", "2" and "3", button "1" adjusts the upward movement of the shooting angle of the camera (61), button "2" adjusts the downward movement of the shooting angle of the camera (61), and button "3" is used for taking a picture and storing; the control and data transmission among the camera (61), the camera control switch (62) and the camera display (64) are realized through Bluetooth.

7. An isolated automatic verification device for mercury sphygmomanometer according to claim 1, characterized in that, The four bearings (97) of the mercury cleaning mechanism (9) are respectively arranged in the corresponding round holes of the four supports (91), the sliding rod (95) is penetratingly installed on the left two supports (91), and the screw rod (92) is penetratingly installed on the right two supports (91), and a round nut (98) is threadedly installed on the upper end of the sliding rod (95) and the screw rod (92); The two supports (91) at the upper end of the mercury cleaning mechanism (9) are threadedly installed with two through-hole bushings (96), the outer ring and the inner ring of the bearing (97) are axially fixed through the supports (91) and the through-hole bushings (96) respectively; one support (91) at the lower left side is threadedly installed with a closed bushing (99), the outer ring and the inner ring of the bearing (97) are axially fixed through the support (91) and the closed bushing (99) respectively; one end of the screw rod (92) at the lower right side is connected with the output end of the motor (94) through a shaft coupling (910), and the axial fixation of the bearing (97) is realized through the shaft shoulder of the screw rod (92) and the support (91); The cleaning frame (93) is installed on the mercury cleaning mechanism (9) through the two through holes of the sliding bracket (931), one end of the sliding bracket (931) is penetratingly installed with the sliding rod (95), and the other end is internally designed with threads matched with the screw rod (92) and is threadedly installed; the sliding bracket (931) is connected with the switching frame (932) through buckles, and the switching frame (932) is adhesively connected with the cleaning brush (933) through structural glue.

8. A method for automatic verification of a mercury sphygmomanometer based on the isolated automatic verification device of a mercury sphygmomanometer according to any one of claims 1 to 7, characterized in that, Zero error and sensitivity verification are included; The zero error verification steps are as follows: Place the mercury sphygmomanometer on the instrument placement area of the workbench (12), and connect the mercury bottle of the mercury sphygmomanometer and the output port of the fifth output pipeline (710) through a rubber pipeline; Slide the sliding switch (32) of the pressurizing pump (31) to the "off" direction of the arrow, and rotate the instrument output control knob (791) on the instrument output switching module (74) to the "close" direction of the arrow, so that the mercury sphygmomanometer is in communication with the atmosphere; Press the button "2" on the camera (61), adjust the camera (61) to move down the angle of view, and observe the value at the zero position of the sphygmomanometer through the camera display (64) and press the button "3" to take a picture and record The zero error of the sphygmomanometer is calculated by the formula The zero error of the sphygmomanometer is calculated by the formula The zero error of the sphygmomanometer is calculated by the formula The zero error of the sphygmomanometer is calculated by the formula The sensitivity verification step is as follows: Keep the placement position of the sphygmomanometer unchanged in the above steps, and keep the protective cover (5) unchanged; Press the button "1" on the camera (61), adjust the camera (61) to move upward, and adjust to the range of 26kPa to 32kPa; Rotate the intermediate switching control knob (792) on the intermediate switching module (76) to the "main measurement" direction of the arrow, and rotate the instrument output control knob (791) on the instrument output switching module (74) to the "on" direction of the arrow; Slide the sliding switch (32) on the pressurizing pump (31) to the "airtight" direction of the arrow, at this time the pressurizing pump (31) will be set to an output pressure of 38kPa, and the pressure will be observed at the same time, when the pressure reaches 38kPa, slide the sliding switch (32) to the "off" direction of the arrow, and keep the pressure constant; The instrument output control knob (791) is rotated so that its arrow points to "off", the overall pressure starts to be released at the instrument output switching module (74), and the camera display (64) is observed. When the mercury column of the sphygmomanometer is in the range of 26 kPa to 32 kPa, the instrument output control knob (791) is quickly rotated so that its arrow points to "on", and the fluctuation value of the mercury column of the sphygmomanometer in the camera display (64) after the arrow of the instrument output control knob (791) points to "on" is observed ; Then rotate the instrument output control knob (791) to the "off" direction of the arrow, and the overall pressure begins to decompress to zero at the instrument output switching module (74). Pass according to the test procedure requirements fluctuation value Determine whether the sphygmomanometer sensitivity test results are qualified.

9. A method for automatic verification of a mercury sphygmomanometer based on the isolated automatic verification device of a mercury sphygmomanometer according to any one of claims 1 to 7, characterized in that, It also includes an airtightness verification, which includes the following steps: Keep the instrument placement and adjustment state in claim 8 unchanged, and place the accessories of the sphygmomanometer including the air bag and the arm band and other accessories on the "accessory placement area" on the workbench (12), and connect the output port of the accessory output switching module (78) with the arm band using the rubber hose provided with the arm band or another rubber hose; Rotate the intermediate switching control knob (792) on the intermediate switching module (76) to the "accessory measurement" direction of the arrow, and rotate the accessory output control knob (793) on the accessory output switching module (78) to the "on" direction of the arrow; Slide the sliding switch (32) to the "airtight" direction of the arrow, at this time the pressurizing pump (31) will be set to an output pressure of 38kPa, and the pressure will be observed at the same time, when the pressure reaches 38kPa, slide the sliding switch (32) to the "off" direction of the arrow, and keep the pressure constant; To accurately measure the air tightness of the attachment, rotate the attachment output control knob (793) so that the arrow points to "hold pressure", observe the pressure drop on the precision pressure gauge (42) and record the drop ; Then rotate the intermediate switching control knob (792) to the "off" direction of the arrow, and rotate the accessory output control knob (793) to the "on" direction of the arrow, and the overall pressure begins to decompress to zero at the intermediate switching module (76). Passing value according to the verification regulation Determine whether the airtightness verification result of the sphygmomanometer accessory is qualified; Rotate the intermediate switching control knob (792) on the intermediate switching module (76) to the "main measurement" direction of the arrow, and rotate the instrument output control knob (791) on the instrument output switching module (74) to the "on" direction of the arrow; Press the button "1" on the camera (61), adjust the camera (61) to move up the shooting angle, adjust to 26kPa to 32kPa range; Slide the slide switch (32) on the pressurizing pump (31) to the arrow direction "airtight", at this time the pressurizing pump (31) will output pressure to 38kPa according to the setting, observe the main precision pressure gauge (41) at the same time, when the main precision pressure gauge (41) shows that the pressure reaches 38kPa, slide the slide switch (32) to the arrow direction "off", and keep pressure for 2min; From 3 min onwards, the decrease in the camera display (64) was observed and the decrease was recorded ; Then rotate the instrument output control knob (791) to make its arrow direction point to "off", and the overall pressure starts to decompress to zero at the instrument output adapter module (74); Passing value according to the verification regulation Determine whether the airtightness verification result of the sphygmomanometer is qualified.

10. A method for automatic verification of a mercury sphygmomanometer based on the isolated automatic verification device of a mercury sphygmomanometer according to any one of claims 1 to 7, characterized in that, Further comprising a value error calibration, the value error calibration comprising the following steps: Keep the instrument in the state of claim 9 unchanged; First pressure reduction calibration step: Rotate the intermediate adapter control knob (792) on the intermediate adapter module (76) to make its arrow direction point to "main test", and rotate the instrument output control knob (791) on the instrument output adapter module (74) to make its arrow direction point to "on"; Adjust the camera shooting angle through the button "1" and button "2" on the camera (61), cover the five calibration points of the value calibration set by the pressurizing pump (31); Slide the slide switch (32) on the pressure pump (31) to the arrow pointing "value", the pressure pump (31) will be set to the highest rated point, and gradually reduce the pressure test point by point, and keep pressure for 30s at each test point until the completion of five test points of pressure reduction test, the pressure pump (31) will automatically reduce to zero, while recording the value on the main precision pressure gauge (41) at each test point Then by observing and recording the value on the camera display (64) ; After the first pressure reduction calibration is completed, the pressurizing pump (31) automatically performs the second pressure reduction calibration after 1min according to the setting Second pressure reduction calibration step: The instrument state remains unchanged after the first pressure reduction test is completed, and the pressure pump (31) will perform a second pressure reduction test according to the settings. As in the first pressure reduction test, the pressure pump (31) will be pressurized to the highest test point, at which point it will be held for 1 min, and then gradually reduced to the test points, with each test point being held for 30 s, until the pressure reduction test of the five test points is completed. The pressure pump (31) will automatically drop to zero, and the value on the main precision pressure gauge (41) at each test point will be recorded Then, by observing and recording the value on the camera display (64) ; Then slide the slide switch (32) to make its arrow direction point to "off", rotate the instrument output control knob (791) to make its arrow direction point to "off", and rotate the intermediate adapter control knob (792) to make its arrow direction point to "off", and the calibration step is completed; According to the formula The indication error of each test point is calculated, and the indication error is passed according to the requirements of the test procedure Determine whether the indication error test result of the sphygmomanometer is qualified.

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