Electronic sphygmomanometer with multiple measurement automatic averaging prompting function

Abstract

The utility model provides a kind of electronic sphygmomanometer with multiple measurement results automatic average prompt function, solve the problem that existing electronic sphygmomanometer user is difficult to handle multiple measurement results according to medical guideline requirement.The electronic sphygmomanometer includes sphygmomanometer main part and cuff, there is pressure sensing system, microcontroller etc in main part, microcontroller is internally configured with continuous measurement detection circuit, data buffer circuit, differential pressure comparison circuit, average value auxiliary calculation circuit and measurement prompt control circuit, to detect in the preset time window and cuff keeps wearing state under continuous start multiple blood pressure measurement;At least the measurement result of first two times is stored;Difference comparison is carried out to systolic pressure and diastolic pressure of the measurement result of first two times, when comparison result exceeds preset threshold, trigger prompting sound unit to prompt user to measure third time, and control display unit to display final blood pressure value after measurement is completed;After measurement result is handled, it is output to display unit.

Description

Technical Field

[0001] This utility model relates to the field of electronic medical device technology, and in particular to an electronic blood pressure monitor that can automatically process and prompt the average value of multiple measurements according to medical guidelines. Background Technology

[0002] Electronic blood pressure monitors are widely used in hospitals and homes for blood pressure monitoring. However, blood pressure values ​​from a single measurement may fluctuate and are affected by various factors. To obtain more reliable blood pressure assessment results, the "Chinese Guidelines for the Prevention and Treatment of Hypertension (2024 Revised Edition)" clearly states: "Blood pressure should be measured using a standard-validated upper arm electronic blood pressure monitor. Specific models can be found on the relevant website (www.stridebp.org). When measuring blood pressure, the measurement should be repeated at 30-60 seconds intervals, and the average of the two readings should be recorded. If the difference between two systolic or diastolic blood pressure readings is more than 10 mmHg, the measurement should be repeated, and the average of the three readings should be recorded."

[0003] Many electronic blood pressure monitors on the market (including verified models listed on websites such as www.stridebp.org) can perform multiple measurements and may store historical data, but users usually need to manually interpret, calculate, and record the averages according to the guidelines mentioned above, or they may simply provide a list of past measurements. For ordinary users, especially the elderly or those unfamiliar with the guidelines, manually performing this process can be difficult, error-prone, or easily overlooked, leading to failure to follow the guidelines and affecting the accuracy and reliability of blood pressure monitoring.

[0004] Therefore, existing technologies lack an electronic blood pressure monitor structure that can automatically identify continuous measurement scenarios, intelligently execute the average calculation rules recommended by the guidelines, and directly prompt the user with the final effective average value, so as to simplify user operation and improve the standardization and reliability of measurement results.

[0005] This invention aims to overcome the shortcomings of the prior art and provide an improved structure for an electronic blood pressure monitor, enabling it to automatically recognize multiple consecutive measurements taken by the user with the cuff still in place, and to automatically calculate and display the effective average blood pressure according to the rules recommended by medical guidelines such as the "Guidelines for the Prevention and Treatment of Hypertension in China (2024 Revised Edition)," thereby simplifying user operation and improving the accuracy and compliance of blood pressure measurement. Utility Model Content

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An electronic blood pressure monitor with automatic averaging of multiple measurement results includes a blood pressure monitor body and a cuff connected to the body. The body is provided with a pressure sensing system, a microcontroller, a prompting unit, a display unit, and an air pump valve system for inflating and deflating the cuff. The microcontroller is electrically connected to the pressure sensing system, the prompting unit, the display unit, and the air pump valve system.

[0008] The microcontroller is a low-power processor with Flash, EEPROM, and multiple ADC channels, and is internally configured with the following circuit units:

[0009] A continuous measurement detection circuit, connected to the control button and the pressure sensing system, is used to detect multiple blood pressure measurements initiated continuously within a preset time window while the cuff remains worn.

[0010] A data buffer circuit is connected to the ADC acquisition output terminal and the internal memory of the microcontroller to store at least the first two measurement results.

[0011] The differential pressure comparison circuit, connected to the data buffer circuit, is used to compare the difference between the systolic and diastolic pressures of the first two measurements and output the comparison result to the measurement prompt control circuit.

[0012] An average value auxiliary calculation circuit, connected to the data buffer circuit and the display unit, is used to process the measurement results and output them to the display unit.

[0013] The measurement prompt control circuit is connected to the differential pressure comparison circuit, the prompt sound unit and the display unit. It is used to trigger the prompt sound unit to prompt the user to perform a third measurement when the comparison result exceeds a preset threshold, and to control the display unit to display the final blood pressure value after the measurement is completed.

[0014] Preferably, the differential pressure comparison circuit is also used to determine whether there is a preset residual pressure in the cuff before each measurement by reading the real-time pressure signal of the pressure sensing system, so as to determine whether to maintain the wearing state.

[0015] Preferably, the measurement prompt control circuit is also used to control the prompt sound unit to provide auditory prompts, and / or control the display unit to provide visual prompts.

[0016] Preferably, the microcontroller is connected to an external non-volatile memory chip, which is connected to the microcontroller via a communication bus to extend the storage of multiple sets of measurement results and time information.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] Improved compliance and accuracy: The built-in microcontroller automatically executes the rules for calculating the average of multiple measurements recommended by medical guidelines, ensuring the standardization and reliability of measurement results and avoiding errors caused by users' lack of understanding or forgetting of the rules.

[0019] Simplified user operation: Users only need to take several measurements as usual (with prompts), without having to manually calculate the average. The system automatically provides the most effective average result, making the operation simpler and especially suitable for elderly users.

[0020] High degree of structural integration: Based on the interconnected hardware structure of the electronic blood pressure monitors in this application, the main improvement is made to the functional configuration of the core components of existing electronic blood pressure monitors (especially the microcontroller). New functions can be achieved without adding too much complex hardware (or only by using existing sensor signals to make more intelligent judgments). It is easy to implement on existing mature electronic blood pressure monitor platforms (such as the model structure verified by www.stridebp.org).

[0021] Enhanced user experience: Automated processing and clear result prompts reduce user confusion and burden, and improve user satisfaction. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural block diagram of one embodiment of the electronic blood pressure monitor of this utility model.

[0024] Figure 2 This is a flowchart illustrating the logic of the microcontroller of this invention executing the average value of multiple measurements.

[0025] In the diagram: 1-Blood pressure monitor body; 2-Cuff; 3-Pressure sensing system; 4-Control button; 5-Microcontroller; 6a-Alarm unit; 6b-Display unit; 7-Air pump valve system. Detailed Implementation

[0026] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings and specific model examples.

[0027] Reference Figure 1This utility model provides an electronic blood pressure monitor with an automatic averaging function for multiple measurements. Its basic structure can be referenced from commercially validated models, such as an upper arm electronic blood pressure monitor conforming to the validation standards of www.stridebp.org. The blood pressure monitor includes a main body 1 and a cuff 2 connected to it.

[0028] The main body 1 of the blood pressure monitor integrates core components, including: a pressure sensing system 3 (typically containing a pressure sensor and its signal conditioning circuit) for detecting pressure within the cuff 2; a microcontroller unit (MCU) 5; a display unit 6b (such as an LCD or OLED screen) for displaying blood pressure, heart rate, status information, etc.; a prompting unit 6a (such as a speaker) for voice prompts; control buttons 4 for user operation (such as start / stop buttons, memory query buttons, etc.); and an air pump valve system 7 for inflating and deflating the cuff 2. The microcontroller 5 is electrically connected to and controls the pressure sensing system 3, the display unit 6b, the prompting unit 6a, the control buttons 4, and the air pump valve system 7.

[0029] The microcontroller 5 is a low-power processor with Flash (Flash Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), and multiple ADC (Analog-to-Digital Converter) channels, and internally configured with the following circuit units:

[0030] A continuous measurement detection circuit is connected to the control button 4 and the pressure sensing system 3, and is used to detect multiple blood pressure measurements that are continuously initiated within a preset time window while the cuff 2 is worn.

[0031] The data buffer circuit connects the ADC acquisition output terminal to the internal memory of the microcontroller 5 to store at least the first two measurement results.

[0032] The differential pressure comparison circuit, connected to the data buffer circuit, is used to compare the difference between the systolic and diastolic pressures of the previous two measurements and output the comparison result to the measurement prompt control circuit.

[0033] The average value auxiliary calculation circuit is connected to the data buffer circuit and the display unit 6b, and is used to process the measurement results and output them to the display unit 6b.

[0034] The measurement prompt control circuit connects the differential pressure comparison circuit, the prompt sound unit 6a, and the display unit 6b. It is used to trigger the prompt sound unit 6a to prompt the user to perform a third measurement when the comparison result exceeds a preset threshold, and to control the display unit 6b to display the final blood pressure value after the measurement is completed.

[0035] It should be noted and understood that, in this application, "measurement result" refers to the complete output of a blood pressure measurement, including systolic pressure (high pressure) and diastolic pressure (low pressure), as well as any accompanying data (such as heart rate, measurement time, device information, etc.); "blood pressure value" is a specific numerical expression, referring to the combined value of systolic and diastolic pressure, which is a quantitative representation of the blood pressure measurement result; furthermore, in this application, "final blood pressure value" specifically refers to the final average value obtained through calculation, including average systolic pressure and average diastolic pressure.

[0036] Furthermore, the differential pressure comparison circuit is also used to determine whether there is a preset residual pressure in the cuff 2 before each measurement by reading the real-time pressure signal of the pressure sensing system 3, so as to determine whether to maintain the wearing state.

[0037] Furthermore, the measurement prompt control circuit is also used to control the prompt tone unit 6a to provide auditory prompts, and / or control the display unit 6b to provide visual prompts.

[0038] Furthermore, the microcontroller 5 is connected to an external non-volatile memory chip, which is connected to the microcontroller 5 via a communication bus to extend the storage of multiple sets of measurement results and time information.

[0039] The key improvement of this invention lies in the interconnected hardware structure within the microcontroller 5, enabling the aforementioned automatic averaging and alerting functions through the coordinated operation of the structural units and related components. (See the detailed workflow for reference.) Figure 2 (Illustration) is as follows:

[0040] Step 1: Start-up and Initial Measurement (T10)

[0041] The user puts on the cuff 2 and presses the start button 8. The microcontroller 5 controls the air pump valve system 7 to inflate the cuff 2 and monitors the pressure through the pressure sensing system 3. A standard oscillometric or auscultatory measurement procedure (if applicable) is executed to obtain the first measurement results of systolic blood pressure (SYS1) and diastolic blood pressure (DIA1). The microcontroller 5 temporarily stores this result in internal RAM (Random Access Memory) or Flash memory and displays it on the display unit 6b.

[0042] Step 2: Detect the intention to perform continuous measurements (T20)

[0043] Microcontroller 5 starts an internal timer (e.g., set to 3 minutes). If the user presses control button 4 again during the validity period of this timer, microcontroller 5 enters a continuous measurement sequence judgment.

[0044] Meanwhile, before initiating the second measurement procedure, the microcontroller 5 performs a rapid initial pressure detection via the pressure sensing system 3. If a small but clearly present pressure is detected (e.g., greater than 2-5 mmHg but far below the inflation pressure), the microcontroller 5 determines that the cuff 2 is still in the wearing state (not fully unfastened).

[0045] Only when both conditions are met—"restart within the time window" and "cuff remains worn"—does the microcontroller 5 recognize it as a valid continuous measurement sequence and prepare for a second measurement. Otherwise, it is treated as a new, independent measurement, and the process restarts from step one (T10).

[0046] Step 3: Perform the second measurement (T30)

[0047] If the measurement sequence is determined to be continuous, the microcontroller 5 may display "Measurement 2 / 2" or a similar prompt on the display unit 6b, and then perform a second measurement to obtain the results SYS2 and DIA2, which are then stored.

[0048] Step 4: Compare the differences (T40)

[0049] Microcontroller 5 calculates the difference: ΔSYS = |SYS1 - SYS2| and ΔDIA = |DIA1 - DIA2|.

[0050] Step 5: Determine if a third measurement is needed (T50)

[0051] Microcontroller 5 determines whether ΔSYS≤10mmHg and ΔDIA≤10mmHg.

[0052] If so: No third measurement is needed, proceed directly to step seven.

[0053] If not: At least one difference is greater than 10 mmHg. The microcontroller 5 prompts the user to perform a third measurement via the display unit 6b (displaying "Difference > 10 mmHg, please measure for the third time") and / or the prompt tone unit 6a (emitting a prompt tone or voice "Please measure again").

[0054] Step Six: Perform the third measurement (T60)

[0055] After receiving a prompt from the user to press the button again (which also requires the cuff 2 to remain in the wearing state for a short period of time), the microcontroller 5 performs a third measurement, obtains the results SYS3 and DIA3, and stores them.

[0056] Step 7: Calculate the average value (T70)

[0057] If step T70 (only two measurements) is performed, microcontroller 5 calculates: ASYS = (SYS1 + SYS2) / 2; ADIA = (DIA1 + DIA2) / 2.

[0058] If step T60 (three measurements) is performed, microcontroller 5 calculates: ASYS = (SYS1 + SYS2 + SYS3) / 3; ADIA = (DIA1 + DIA2 + DIA3) / 3.

[0059] Step 8: Display the final average result (T80)

[0060] The microcontroller 5 controls the display unit 6b to clearly display the calculated ASYS and ADIA as the main results of this continuous measurement sequence, for example, displaying them as "Average Systolic Blood Pressure: XXX mmHg" and "Average Diastolic Blood Pressure: YYY mmHg". Simultaneously, it can stop displaying individual measurement values, or display them in smaller font or in other areas of the screen, or allow the user to access them via buttons. The tone unit 6a can also selectively announce the average value results. The measurement sequence ends.

[0061] In a preferred embodiment, when the microcontroller 5 detects that a second measurement has been initiated and meets the conditions, it displays "Second measurement in progress" or a similar prompt on the display unit 6b. When a third measurement is required, it displays "The reading difference is large, please perform a third measurement" or a similar prompt.

[0062] In a preferred embodiment, the display unit 6b may selectively display the single measurement reading on which the average value is based in a secondary manner (such as displaying it in small text at the bottom of the screen or switching the display via a button) while displaying the final average value.

[0063] In a preferred embodiment, the preset time window (used to determine whether it is a continuous measurement) and the difference comparison threshold (e.g., 10 mmHg) can be adjusted through a setting mode.

[0064] Through the interconnected hardware structure and built-in logic of this application, even ordinary users can easily obtain more reliable average blood pressure values ​​that conform to the recommendations of the "Chinese Guidelines for the Prevention and Treatment of Hypertension (2024 Revised Edition)". The technical solution of this utility model can be applied to various upper arm electronic blood pressure monitors based on oscillometric or other principles, especially those models designed for verification by institutions such as www.stridebp.org, to improve the standardization and accuracy of their clinical applications, automatically execute the averaging rules recommended by the guidelines, and are easy to operate.

[0065] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. For example, the method for detecting whether the cuff is being worn can also employ other sensors or logical judgment methods; the prompting method can be purely visual, purely auditory, or a combination thereof; details such as the calculation accuracy of the average value and the display format can be adjusted.

Claims

1. An electronic blood pressure monitor with automatic averaging and prompting function for multiple measurement results, comprising a blood pressure monitor body (1) and a cuff (2) connected to the body (1), wherein the body (1) is provided with a pressure sensing system (3), a microcontroller (5), a prompting unit (6a), a display unit (6b), and an air pump valve system (7) for inflating and deflating the cuff (2), wherein the microcontroller (5) is electrically connected to the pressure sensing system (3), the prompting unit (6a), the display unit (6b), and the air pump valve system (7), characterized in that: The microcontroller (5) is a low-power processor with Flash, EEPROM and multiple ADC channels, and is internally configured with the following circuit units: A continuous measurement detection circuit is connected to the control button (4) and the pressure sensing system (3) to detect multiple blood pressure measurements that are continuously initiated within a preset time window while the cuff (2) is still in the wearing state; A data caching circuit is connected to the ADC acquisition output terminal and the internal memory of the microcontroller (5) to store at least the first two measurement results; The differential pressure comparison circuit, connected to the data buffer circuit, is used to compare the difference between the systolic and diastolic pressures of the first two measurements and output the comparison result to the measurement prompt control circuit. An average value auxiliary calculation circuit is connected to the data buffer circuit and the display unit (6b) and is used to process the measurement results and output them to the display unit (6b). The measurement prompt control circuit is connected to the differential pressure comparison circuit, the prompt sound unit (6a), and the display unit (6b). It is used to trigger the prompt sound unit (6a) to prompt the user to perform a third measurement when the comparison result exceeds a preset threshold, and to control the display unit (6b) to display the final blood pressure value after the measurement is completed.

2. The electronic blood pressure monitor according to claim 1, characterized in that: The differential pressure comparison circuit is also used to determine whether there is a preset residual pressure in the cuff (2) before each measurement by reading the real-time pressure signal of the pressure sensing system (3), so as to determine whether to maintain the wearing state.

3. The electronic blood pressure monitor according to claim 1, characterized in that: The measurement prompt control circuit is also used to control the prompt sound unit (6a) to provide auditory prompts, and / or control the display unit (6b) to provide visual prompts.

4. The electronic blood pressure monitor according to claim 1, characterized in that: The microcontroller (5) is connected to an external non-volatile memory chip, which is connected to the microcontroller (5) via a communication bus to extend the storage of multiple sets of measurement results and time information.

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