Airtightness detection device of sphygmomanometer, electronic sphygmomanometer and airtightness detection method

Abstract

The invention relates to the technical field of medical instruments, in particular to an air tightness detection device of a sphygmomanometer, an electronic sphygmomanometer and an air tightness detection method.The air tightness detection device of the sphygmomanometer comprises a base, an air cylinder and an auxiliary jig, and a containing groove at least capable of containing the bottom area of the sphygmomanometer to be detected is formed in the base; and a plurality of limiting grooves opposite to the foot pads of the sphygmomanometer to be detected are formed in the accommodating groove, so that errors are prevented from occurring during air tightness detection, and the factory quality of the whole sphygmomanometer to be detected is not influenced. The air cylinder is provided with an air supply pipe capable of being communicated with the sphygmomanometer to be detected and used for blowing air to the sphygmomanometer to be detected and providing air tightness detection environment conditions. The auxiliary jig is detachably arranged in the accommodating groove and is provided with the plug capable of plugging the air escape valve of the sphygmomanometer to be detected, so that the air escape valve with a smaller size can be plugged when the air tightness detection is performed on the sphygmomanometer to be detected, and the air tightness detection effect is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an airtightness detection device for a sphygmomanometer, an electronic sphygmomanometer, and an airtightness detection method. Background Art

[0002] An electronic sphygmomanometer is a medical device that uses electronic technology to measure blood pressure. Its appearance has greatly improved the convenience and accuracy of self-measuring blood pressure at home and blood pressure monitoring in medical settings. Before the electronic sphygmomanometer leaves the factory, it needs to be subjected to airtightness detection to ensure the stability and measurement accuracy of the device.

[0003] The existing electronic sphygmomanometers use a linear valve and a conventional circuit to jointly control the air release speed, thereby controlling the air pressure change of the entire sphygmomanometer. The airtightness of the self-test air circuit can be achieved by the self-closure of the linear valve. However, the manufacturing requirements and costs of the linear valve and the control circuit are relatively high. When using a low-cost ordinary solenoid valve, it needs to be used in conjunction with a relief valve. When airtightness detection is required, the relief valve needs to be blocked. However, the relief valve is small in size, and it is difficult to manually block it, which affects the detection efficiency. Summary of the Invention

[0004] The present invention is made to solve the above technical problems, and its purpose is to provide an airtightness detection device for a sphygmomanometer, which can ensure airtightness detection by blocking the sphygmomanometer to be tested for airtightness test through the setting of an auxiliary fixture.

[0005] To achieve the above purpose, the present invention provides an airtightness detection device for a sphygmomanometer, including: a base, which forms an accommodation groove capable of accommodating at least the bottom area of the sphygmomanometer to be tested, and a plurality of limiting grooves opposite to the foot pads of the sphygmomanometer to be tested are formed in the accommodation groove; a cylinder, having an air supply pipe capable of communicating with the sphygmomanometer to be tested; an auxiliary fixture, detachably arranged in the accommodation groove, and having a plug capable of blocking the relief valve of the sphygmomanometer to be tested.

[0006] Preferably, the shape of the accommodation groove is the same as at least the shape of the bottom area of the outer shell of the sphygmomanometer to be tested, and the shape of each limiting groove is the same as the shape of the foot pad of the sphygmomanometer to be tested; the auxiliary fixture is arranged in one of the limiting grooves.

[0007] Preferably, the plug is a silicone plug or a steel needle.

[0008] Preferably, the intermediate heat preservation structure includes a through hole for the first connecting frame to pass through, and the diameter of the through hole is larger than the width of the first connecting frame.

[0009] The present invention provides an electronic sphygmomanometer, which is applicable to the airtightness detection device for the sphygmomanometer described above, and includes: a housing with foot pads provided at the bottom of the outer side, and a jig through hole formed on the side wall opposite to the limiting groove; an air pump located inside the housing; a trachea, one end of which is connected to the air pump, and the other end forms an interface for supplying air externally; a solenoid valve connected to the trachea; a bleed valve provided on the trachea, arranged opposite to the jig through hole, and including capillary pores.

[0010] Preferably, the jig through hole is arranged opposite to the foot pad.

[0011] Preferably, the sphygmomanometer to be tested further includes a sensor, and the sensor is connected to the trachea.

[0012] Preferably, a trachea adapter is connected to the trachea; the trachea includes a first bronchus, a second bronchus and a third bronchus, the first bronchus is connected to the air pump, the second bronchus is connected to the sensor, and the third bronchus is connected to the solenoid valve; the bleed valve is arranged on the first bronchus.

[0013] The present invention provides a method for detecting the airtightness of a sphygmomanometer, which is characterized in that the above-mentioned airtightness detection device is adopted, and includes the following implementation steps: when the bleed valve of the sphygmomanometer to be tested is not blocked by the auxiliary jig, using a cylinder to pressurize the sphygmomanometer to be tested to a first preset pressure, and record the required pressurization duration; in response to the pressurization duration being within the first preset range, depressurize the sphygmomanometer to be tested to a second preset pressure, and record the required depressurization duration; in response to the depressurization duration being within the second preset range, after the auxiliary jig blocks the bleed valve of the sphygmomanometer to be tested, use a cylinder to pressurize the sphygmomanometer to be tested to a third preset pressure, and then record the first air leakage value of the sphygmomanometer to be tested within the first preset duration; after using the cylinder to depressurize the sphygmomanometer to be tested to a fourth preset pressure, record the second air leakage value of the sphygmomanometer to be tested within the second preset duration; in response to both the first air leakage value and the second air leakage value being within the third preset range, stop the airtightness detection.

[0014] Preferably, the first preset range is 3 - 8 seconds; the second preset range is 18 - 28 seconds.

[0015] Preferably, the first preset duration is equal to the second preset duration, and the first preset duration and the second preset duration are 1 minute.

[0016] According to the above description and practice, the airtightness detection device of the sphygmomanometer described in the present invention includes a base, a cylinder and an auxiliary jig. An accommodation groove capable of accommodating at least the bottom area of the sphygmomanometer to be tested is formed in the base. A plurality of limit grooves opposite to the feet of the sphygmomanometer to be tested are formed in the accommodation groove, which are used to accommodate the sphygmomanometer to be tested and ensure that the sphygmomanometer to be tested and the base can be stably fixed, so as to avoid errors in airtightness detection caused by the unstable installation of the sphygmomanometer to be tested on the base during airtightness detection, thereby affecting the ex-factory quality of the entire sphygmomanometer to be tested. The cylinder has an air supply pipe that can be connected to the sphygmomanometer to be tested, which is used to inflate the sphygmomanometer to be tested and provide the environmental conditions for airtightness detection. The auxiliary jig is detachably arranged in the accommodation groove and has a plug that can block the air release valve of the sphygmomanometer to be tested, so that when the airtightness of the sphygmomanometer to be tested is detected, the relatively small air release valve can be blocked, ensuring the effect of airtightness detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the airtightness detection device of the sphygmomanometer involved in an embodiment of the present invention.

[0018] Figure 2 It is a schematic structural diagram of the airtightness detection device of the sphygmomanometer involved in another embodiment of the present invention.

[0019] Figure 3 It is a schematic internal structure diagram of the electronic sphygmomanometer involved in an embodiment of the present invention.

[0020] Figure 4 It is a schematic bottom structure diagram of the electronic sphygmomanometer involved in an embodiment of the present invention.

[0021] Figure 5 It is a partial sectional view of the air release valve of the electronic sphygmomanometer involved in an embodiment of the present invention.

[0022] Figure 6 It is a sectional view of the airtightness detection device of the sphygmomanometer involved in an embodiment of the present invention.

[0023] Figure 7 It is a sectional view of the airtightness detection device of the sphygmomanometer involved in another embodiment of the present invention.

[0024] Figure 8 It is a flowchart of the airtightness detection method of the sphygmomanometer involved in an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The features, structures, or characteristics described may be combined in any suitable manner in one or more embodiments.

[0026] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures denote the same or similar parts, and thus their repeated description will be omitted. It should be noted that in the present disclosure, the terms "comprising", "configured with", and "provided with" are used to mean an open inclusion, and mean that there may be additional elements, components, etc. in addition to the listed elements / components / etc.; the terms "first", "second", etc. are only used as labels and are not limitations on the number or order of their objects; the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0027] Unless otherwise clearly defined and limited, the terms "installed", "connected", and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] An electronic sphygmomanometer is a medical device that uses electronic technology to measure blood pressure. Its appearance has greatly improved the convenience and accuracy of self-measuring blood pressure at home and blood pressure monitoring in medical settings. Existing electronic sphygmomanometers use a linear valve and a conventional circuit to jointly control the deflation speed, and thus control the air pressure change of the entire sphygmomanometer. However, the manufacturing requirements and costs of the linear valve and the control circuit are relatively high. However, when using a low-cost ordinary solenoid valve 43, it is relatively difficult to control a stable deflation speed during the airtightness detection thereof.

[0029] Therefore, the present disclosure discloses an electronic sphygmomanometer 10. Please refer to Figures 1 to 8, the electronic sphygmomanometer 10 includes a housing 4, an air pump 5, an air tube 6, a solenoid valve 43 and a deflation valve 7. Among them, a foot pad 41 is provided at the bottom outside of the housing 4, and a jig through hole 42 opposite to the limiting groove 12 is formed on the side wall. On the one hand, the foot pad 41 is provided to play a certain buffering role for the entire electronic sphygmomanometer 10; on the other hand, when the jig through hole 42 is no longer needed, the foot pad 41 is used to cover the jig through hole 42 to prevent external dust from entering the electronic sphygmomanometer 10 and affecting other parts inside the electronic sphygmomanometer 10. The air pump 5 is located inside the housing 4. One end of the air tube 6 is connected to the air pump 5, and the other end forms an interface 61 for supplying air externally, which can be used to inflate and increase pressure when using the electronic sphygmomanometer 10 to complete blood pressure measurement. The solenoid valve 43 is connected to the air tube 6 and is used to control the gas flow inside the entire electronic sphygmomanometer 10. The deflation valve 7 is provided on the air tube 6 and is disposed opposite to the jig through hole 42. After the measurement of the systolic blood pressure is completed, the deflation valve 7 is opened to gradually reduce the pressure in the cuff (not shown in the figure) to observe the trend of blood pressure decrease and accurately measure the diastolic blood pressure. In addition, the deflation valve 7 includes a capillary pore 71, and the capillary pore 71 is disposed opposite to the jig through hole 42. When performing an airtightness test on the electronic sphygmomanometer 10, the capillary pore 71 needs to be blocked to achieve the sealing of the entire air path; and when the electronic sphygmomanometer 10 is in normal use, the capillary pore 71 can normally discharge air and cooperate with the solenoid valve 43 to complete the measurement of the diastolic and systolic blood pressures.

[0030] In some embodiments, an installation hole 45 for accommodating the foot pad 41 is provided at the bottom outside of the housing 4, and the jig through hole 42 is disposed opposite to the foot pad 41. That is to say, at this time, the jig through hole 42 is provided in the installation hole 45, and the outlet of the deflation valve 7 is installed at the installation hole 45 of the foot pad 41. The foot pad 41 is used to block the jig through hole 42. Without changing the overall structure and stiffness of the electronic sphygmomanometer 10, by installing the foot pad 41 in the installation hole 45, the jig through hole 42 is blocked to prevent the gas in the air tube 6 from leaking through the capillary pore 71 and the jig through hole 42 on the deflation valve 7 during the operation of the electronic sphygmomanometer 10, thereby affecting the accuracy of the systolic and diastolic blood pressures measured by the electronic sphygmomanometer 10.

[0031] In some embodiments, the sphygmomanometer to be measured further includes a sensor 44. The sensor 44 is connected to the trachea 6. The sensor 44 in the electronic sphygmomanometer 10 is used to convert the pressure change in the cuff into an electrical signal, ensuring the accuracy of blood pressure measurement. On the one hand, it can detect the pressure rise in the cuff when the air pump 5 inflates, and convert these physical changes into electrical signals, which are transmitted into the electronic sphygmomanometer 10 for analysis. On the other hand, the sensor 44 can quickly respond to the instantaneous changes in blood pressure, and the high-precision sensor 44 further ensures the accuracy of the measurement results, thereby ensuring the reliability of long-term use. In addition, the sensor 44 can also adapt to different pressure ranges and is compatible with other electronic components of the electronic sphygmomanometer 10 to jointly complete the automatic measurement and display of blood pressure.

[0032] In some embodiments, the electronic sphygmomanometer 10 further includes a tracheal adapter 8, which is connected to the trachea 6 and is used to transport the gas pressurized by the air pump 5 to the solenoid valve 43 and the sensor 44 to achieve other identifications and adjustments of the electronic sphygmomanometer 10. The trachea 6 includes a first bronchus 62, a second bronchus 63 and a third bronchus 64. The first bronchus 62 is connected to the air pump 5, the second bronchus 63 is connected to the sensor 44, and the third bronchus 64 is connected to the solenoid valve 43. The gas when the air pump 5 blows air is respectively transmitted to the sensor 44 and the solenoid valve 43 through the tracheal adapter. The air release valve 7 is arranged on the first bronchus 62. After the electronic sphygmomanometer 10 completes the measurement of the systolic blood pressure, the gas in the trachea 6 is discharged through the air release valve 7 to reduce the air pressure in the trachea 6, and the air release valve 7 is arranged on the side close to the air pump 5, which can discharge the gas from the electronic sphygmomanometer 10 faster, realizing rapid air release and measuring the diastolic blood pressure.

[0033] Furthermore, in some embodiments, the electronic sphygmomanometer further includes a control circuit board 46, which is used to install and carry the solenoid valve 43 and the sensor 44, realize the processing of the data obtained by the sensor 44, and control the opening and closing of the solenoid valve 43 according to the data transmitted by the sensor 44 to control the normal operation of the entire electronic sphygmomanometer.

[0034] It can be understood that when using the electronic sphygmomanometer 10, in order to ensure that the user can easily read the measured blood pressure value data for subsequent situation judgment, in some embodiments, the housing 4 further includes a display screen 13. The display screen 13 is electrically connected to the control circuit board 46, and the value processed by the control circuit board 46 is displayed on the display screen 13, ensuring the convenience of the electronic sphygmomanometer 10.

[0035] The present invention discloses an airtightness detection device for a sphygmomanometer, which is applicable to the above-mentioned electronic sphygmomanometer 10. The airtightness detection device for the sphygmomanometer includes a base 1, a cylinder 2 and an auxiliary jig 3. An accommodation groove 11 capable of accommodating at least the bottom area of the sphygmomanometer to be tested is formed in the base 1. A plurality of limiting grooves 12 opposite to the feet 41 of the sphygmomanometer to be tested are formed in the accommodation groove 11, which is used to accommodate the electronic sphygmomanometer 10 to be tested and ensure that the electronic sphygmomanometer 10 to be tested and the base 1 can be stably fixed, so as to avoid errors in the airtightness detection due to the unstable installation of the electronic sphygmomanometer 10 to be tested on the base 1, thereby affecting the ex-factory quality of the electronic sphygmomanometer 10. The cylinder 2 has an air supply pipe 20 capable of communicating with the electronic sphygmomanometer 10 to be tested, which is used to inflate the electronic sphygmomanometer 10 to be tested and provide the environmental conditions for airtightness detection. The auxiliary jig 3 is detachably arranged in the accommodation groove 11 and has a plug 31 capable of blocking the air release valve 7 of the sphygmomanometer to be tested, so that when the airtightness of the electronic sphygmomanometer 10 to be tested is detected, the relatively small air release valve 7 can be blocked, ensuring the effectiveness and accuracy of the airtightness detection.

[0036] In order to ensure that the air path of the electronic sphygmomanometer 10 itself can be kept airtight when the airtightness of the electronic sphygmomanometer 10 is detected, in some embodiments, the shape of the accommodation groove 11 is the same as at least the shape of the bottom area of the outer shell of the electronic sphygmomanometer 10 to be tested, which is used to accommodate the electronic sphygmomanometer 10 to be tested and fix the electronic sphygmomanometer 10 to be tested in the base 1. The shape of each limiting groove 12 is the same as the shape of the feet 41 of the electronic sphygmomanometer 10 to be tested, further ensuring that the electronic sphygmomanometer 10 can be stably fixed to the base 1 when the airtightness of the electronic sphygmomanometer 10 is detected, and thus ensuring the detection accuracy of the airtightness detection device. The auxiliary jig 3 is arranged in one of the limiting grooves 12, corresponding to the jig through-hole 42 on the electronic sphygmomanometer 10 and blocking the air release valve 7, so as to ensure that the airtightness of the air path of the electronic sphygmomanometer 10 itself can be ensured when the airtightness of the electronic sphygmomanometer 10 is detected, thereby providing the basic conditions for realizing the airtightness detection of the electronic sphygmomanometer 20.

[0037] Since the air release valve 7 of the electronic sphygmomanometer 10 may be a hard rubber air release valve 7 or a soft rubber air release valve 7, in order to ensure its sealing effect, the material of the plug 31 used for blocking it is also different. In some embodiments, the plug 31 is a silica gel plug 31 or a steel needle. Among them, when the air release valve 7 is a hard rubber air release valve 7, the plug 31 is a silica gel plug 31, and when the air release valve 7 is a soft rubber air release valve 7, the plug 31 is a steel needle. By cooperating between the soft material and the hard material, the sealing of the air release valve 7 is realized.

[0038] The present invention discloses an airtightness detection method for a sphygmomanometer, which adopts the above airtightness detection device and includes the following implementation steps:

[0039] Step S1: When the auxiliary jig 3 does not block the air release valve 7 of the blood pressure monitor to be tested, use the air cylinder 2 to pressurize the blood pressure monitor to be tested to the first preset pressure, and record the required pressurization duration.

[0040] Among them, in some application scenarios, due to the capillary pores 71 in the air release valve 7, the electronic blood pressure monitor 10 is in an air release state during both the inflation and deflation processes. To ensure the accuracy of subsequent airtightness detection, it is necessary to determine that the air release rate of the air release valve 7 is normal in both the high and low pressure states, and to avoid large differences in the air release rate of the air release valve 7 due to the influence of air pressure, which affects the accuracy of airtightness detection. Therefore, before performing airtightness detection, keep the air release valve 7 unblocked and perform an air release rate detection on the air release valve 7 in this state. Among them, the range of the first preset pressure is 220 mmHg to 240 mmHg. Preferably, it can be 230 mmHg. An air cylinder 2 with an exhaust volume of 200 milliliters is used and connected to the blood pressure monitor to be tested through an air supply pipe 20. Use the air cylinder 2 to inflate and pressurize the blood pressure monitor to be tested to 230 mmHg, and record the pressurization duration required for pressurization.

[0041] Step S2: In response to the pressurization duration being within the first preset range, let the blood pressure monitor to be tested depressurize to the second preset pressure, and record the required depressurization duration.

[0042] Among them, in some application scenarios, when the time for the air cylinder 2 to pressurize the blood pressure monitor to be tested and reach 230 mmHg is within the first preset range, the air cylinder 2 stops working. Under the action of the capillary pores 71 in the pressure relief valve 7 of the blood pressure monitor to be tested, the blood pressure monitor to be tested depressurizes and records the depressurization duration to the second preset pressure. Among them, the range of the second preset pressure is 30 mmHg to 50 mmHg. Preferably, it can be 40 mmHg. That is to say, by recording the depressurization duration of the blood pressure monitor to be tested from 230 mmHg to 40 mmHg and using it together with the pressurization duration as a basis to judge the air release rate of the air release valve 7.

[0043] Specifically, in some application scenarios, the first preset range is 3 - 8 s. That is to say, when the time for the air cylinder 2 to pressurize the blood pressure monitor to be tested and reach 230 mmHg is within 3 - 8 s, at this time, the air release rate of the air release valve 7 under the pressurized state is qualified.

[0044] If the pressurization duration is not within the first preset range, there may be potential problems in the air circuit design of the blood pressure monitor to be tested or the air release valve 7, and it is necessary to rework and check.

[0045] Step S3: In response to the depressurization duration being within the second preset range, perform an airtightness detection on the blood pressure monitor to be tested.

[0046] In some application scenarios, after the air release rate of the air release valve 7 is detected and it is determined that the components inside the blood pressure monitor to be tested have no impact on the airtightness detection, the entire blood pressure monitor to be tested is installed on the airtightness detection device for airtightness detection to ensure the finished product effect of the entire blood pressure monitor to be tested. Specifically, in some application scenarios, the second preset range is 18 - 28 s. That is to say, after the cylinder 2 stops working, the time for the pressure inside the blood pressure monitor to be tested to drop from 230 mmHg to 40 mmHg is within 18 - 28 s. At this time, the air release rate of the air release valve 7 meets the specified standard, and the test of the air release rate of the air release valve 7 inside the blood pressure monitor to be tested is completed.

[0047] Moreover, since the air release valve 7 of the blood pressure monitor to be tested has capillary pores 71, before the airtightness detection, it is necessary to ensure the airtightness of the air path inside the blood pressure monitor to be tested. That is to say, it is necessary to install the blood pressure monitor to be tested on the base 1, and the auxiliary jig 3 on the base 1 extends into the jig through-hole 42 of the blood pressure monitor to be tested, and the plug 31 blocks the capillary pores 71 to complete the sealing of the air path inside the blood pressure monitor to be tested.

[0048] Step S31: After the auxiliary jig 3 blocks the air release valve 7 of the blood pressure monitor to be tested, use the cylinder 2 to pressurize the blood pressure monitor to be tested to the third preset pressure, and then record the first air leakage value of the blood pressure monitor to be tested within the first preset duration. Among them, in some application scenarios, a cylinder 2 with an exhaust volume of 100 milliliters is used, and the cylinder 2 is connected to the blood pressure monitor to be tested through the air supply pipe 20 for airtightness detection. In some application scenarios, the cylinder 2 pressurizes the blood pressure monitor to be tested to the third preset pressure, observes and measures the first air leakage value of the blood pressure monitor to be tested after the first preset duration in this state. Specifically, the first preset duration and the first air leakage value can be specifically set according to the specifications of the entire blood pressure monitor to be tested and requirements. In some specific application scenarios, the third preset pressure is the high-pressure value, which can be 230 mmHg, and the first preset duration can be 1 - 3 minutes. Record the first air leakage value within the first preset duration and wait for subsequent processing.

[0049] Step S4: After using the cylinder 2 to reduce the pressure of the blood pressure monitor to be tested to the fourth preset pressure, record the second air leakage value of the blood pressure monitor to be tested within the second preset duration.

[0050] In some application scenarios, since the air release valve 7 in the blood pressure monitor to be tested is blocked by the auxiliary fixture 3 at this time, the entire blood pressure monitor to be tested no longer has the ability to adjust the air pressure by itself. At this time, the air cylinder 2 works to reduce the pressure of the blood pressure monitor to be tested to the fourth preset pressure, and the second air leakage value of the blood pressure monitor to be tested in this state is observed and measured. It can be understood that the fourth preset pressure is a low-pressure state, which can be the atmospheric pressure. The second preset duration can be 1 - 3 minutes, and the second air leakage value within the second preset duration is recorded. Step S5: In response to both the first air leakage value and the second air leakage value being within the third preset range, stop the airtightness detection.

[0051] In some application scenarios, when the air leakage values of the blood pressure monitor to be tested in the third preset pressure state and the fourth preset pressure state are both within the third preset range, the airtightness detection of the blood pressure monitor to be tested is qualified. If any of the air leakage values of the blood pressure monitor to be tested in the third preset pressure state and the fourth preset pressure exceeds the third preset range, it needs to be sent back to the factory for repair and reconnected to the air cylinder 2 for detection.

[0052] Furthermore, in order to avoid the influence of air pressure on the air leakage situation in the entire blood pressure monitor to be tested, therefore, preferably, when performing the airtightness detection, the air leakage value is judged according to a unified standard. Specifically, it includes:

[0053] In some application scenarios, the first preset duration is equal to the second preset duration, and the first preset duration and the second preset duration are 1 minute. That is to say, when the air leakage values within 1 minute of the blood pressure monitor to be tested in the third preset pressure state and the fourth preset pressure state are both less than 6 mmHg, the airtightness detection of the blood pressure monitor to be tested is qualified. If any of the air leakage values within 1 minute of the blood pressure monitor to be tested in the third preset pressure state and the fourth preset pressure is greater than 6 mmHg, it needs to be sent back to the factory for repair and reconnected to the air cylinder 2 for detection.

[0054] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An air tightness detection device for a sphygmomanometer, characterized in that: include: A base, in which a receiving groove is formed that can at least receive the bottom area of ​​the blood pressure meter to be measured, and a plurality of limiting grooves are formed in the receiving groove that are opposite to the foot pads of the blood pressure meter to be measured; A cylinder having an air supply pipe capable of being connected to the blood pressure meter to be measured; The auxiliary fixture is detachably arranged in the accommodating groove and has a plug capable of sealing the air release valve of the blood pressure meter to be measured.

2. The airtightness detection device according to claim 1, characterized in that: The shape of the accommodating groove is the same as the shape of at least the bottom area of ​​the housing of the blood pressure meter to be measured, and the shape of each of the limiting grooves is the same as the shape of the foot pad of the blood pressure meter to be measured; The auxiliary fixture is arranged in one of the limiting grooves.

3. The airtightness detection device according to claim 1, characterized in that: The plug is a silicone plug or a steel needle.

4. An electronic sphygmomanometer, suitable for use as an airtightness detection device for a sphygmomanometer as claimed in any one of claims 1 to 3, characterized in that: include: The housing has a foot pad at the outer bottom and a fixture through hole opposite to the limiting groove formed on the side wall; an air pump, located in the housing; An air pipe, one end of which is connected to the air pump and the other end of which is provided with an interface for external air supply; A solenoid valve connected to the air pipe; The air release valve is arranged on the air pipe, is arranged opposite to the fixture through hole, and includes capillary pores.

5. The electronic sphygmomanometer according to claim 4, characterized in that: The fixture via hole is arranged opposite to the foot pad.

6. The electronic sphygmomanometer according to claim 4, characterized in that: The blood pressure meter to be measured also includes a sensor, and the sensor is connected to the trachea.

7. The electronic sphygmomanometer according to claim 6, characterized in that: Also includes: A trachea adapter, connected to the trachea; The trachea includes a first bronchus, a second bronchus and a third bronchus, the first bronchus is connected to the air pump, the second bronchus is connected to the sensor, and the third bronchus is connected to the solenoid valve; The air release valve is arranged on the first bronchus.

8. A method for detecting air tightness of a sphygmomanometer, characterized in that: The airtightness detection device according to any one of claims 1 to 3 above is adopted, comprising the following steps: When the auxiliary fixture does not block the air release valve of the sphygmomanometer to be tested, the sphygmomanometer to be tested is pressurized to a first preset pressure by using the cylinder, and the required pressurization time is recorded; In response to the pressurization time being within the first preset range, the blood pressure meter to be tested is depressurized to a second preset pressure, and the required depressurization time is recorded; In response to the depressurization time being within the second preset range, after the auxiliary fixture blocks the air release valve of the sphygmomanometer to be measured, the sphygmomanometer to be measured is pressurized to a third preset pressure by using a cylinder, and then a first air leakage value of the sphygmomanometer to be measured within the first preset time is recorded; After reducing the pressure of the blood pressure meter to be tested to a fourth preset pressure by using the cylinder, recording a second air leakage value of the blood pressure meter to be tested within a second preset time period; In response to the first leakage value and the second leakage value both being within a third preset range, the air tightness detection is stopped.

9. The airtightness detection method according to claim 8, characterized in that: The first preset range is 3-8 seconds; the second preset range is 18-28 seconds.

10. The airtightness detection method according to claim 8, characterized in that: The first preset time length is equal to the second preset time length, and the first preset time length and the second preset time length are 1 minute.

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