Methods for determining pre-inflation pressure, blood pressure monitoring devices and storage media

Abstract

This application discloses a method for determining the pre-inflation pressure value, a blood pressure detection device, and a storage medium. The method for determining the pre-inflation pressure value includes: performing a current blood pressure measurement; determining the reliability of the current blood pressure measurement; and determining the pre-inflation pressure value for the next blood pressure measurement based on the measurement result and reliability of the current blood pressure measurement. Through the above method, this application can improve the accuracy of blood pressure detection.

Description

Technical Field

[0001] This application relates to the field of non-invasive blood pressure detection technology, and in particular to a method for determining the pre-inflation pressure value, a blood pressure detection device, and a storage medium. Background Technology

[0002] Non-invasive blood pressure measurement mostly uses the oscillation method. Currently, the oscillation method mainly uses a step deflation method. The basic process is as follows: first, the blood pressure is rapidly inflated to a preset inflation pressure to block blood flow (generally, the preset inflation pressure should be higher than the systolic pressure). Then, the blood pressure is deflated in steps according to a certain step size. The pulse wave information at each step is detected. Based on this pulse wave information, the required blood pressure parameter values, such as systolic pressure, diastolic pressure, and mean pressure, are determined.

[0003] Setting the preset inflation pressure is crucial. If it's set too high, it wastes measurement time and causes significant pressure on the subject's arm, resulting in poor comfort. Conversely, if it's set too low, air needs to be added during the measurement, which also prolongs the measurement time and leads to a poor subject experience. The current memory pre-inflation pressure mode has drawbacks. Summary of the Invention

[0004] This application mainly provides a method for determining the pre-inflation pressure value, a blood pressure detection device, and a computer-readable storage medium, which can solve the problem of inaccurate pre-inflation pressure value setting in the prior art.

[0005] To address the aforementioned technical problems, the first aspect of this application provides a method for determining a pre-inflation pressure value. The method includes: performing a current blood pressure measurement; determining the reliability of the current blood pressure measurement; and determining the pre-inflation pressure value for the next blood pressure measurement based on the measurement result of the current blood pressure measurement and the reliability.

[0006] The step of determining the reliability of the current blood pressure measurement includes: acquiring motion information during the current blood pressure measurement process; and determining the reliability of the current blood pressure measurement based on the motion information.

[0007] The step of obtaining exercise information during the current blood pressure measurement includes: obtaining the ratio of exercise time to total measurement time during the current blood pressure measurement; the step of determining the reliability of the current blood pressure measurement based on the exercise information includes: determining the reliability level of the current blood pressure measurement based on the ratio of exercise time to total measurement time.

[0008] The determination of the reliability level of the current blood pressure measurement includes: if the ratio of the exercise time to the total measurement time during the current blood pressure measurement is less than or equal to a first ratio threshold, the reliability level is determined to be level one; if the ratio of the exercise time to the total measurement time during the current blood pressure measurement is greater than the first ratio threshold and less than or equal to a second ratio threshold, the reliability level is determined to be level two; if the ratio of the exercise time to the total measurement time during the current blood pressure measurement is greater than the second ratio threshold, the reliability level is determined to be level three; wherein the first ratio threshold is less than the second ratio threshold.

[0009] The step of determining the reliability of the current blood pressure measurement includes: obtaining the test result of the current blood pressure measurement; and determining the reliability of the current blood pressure measurement based on the test result of the current blood pressure measurement.

[0010] The step of obtaining the detection result of the current blood pressure test includes: performing interference judgment on the detection results of each step of the current blood pressure test to determine the number of steps with interference in the current blood pressure test; the step of determining the reliability of the current blood pressure test based on the detection result of the current blood pressure test includes: determining the reliability level of the current blood pressure test based on the ratio of the number of steps with interference to the total number of steps.

[0011] The interference determination of the detection results of each step of the current blood pressure detection includes: determining whether the step meets at least one of the following conditions: the difference between the highest and lowest trough points of the waveform obtained by the step is greater than a preset threshold; the number of waveforms is greater than a preset number threshold, and the ratio of the maximum waveform amplitude to the minimum waveform amplitude is greater than a preset ratio threshold; the mean of the time axis spacing of adjacent pulse waveforms is not within a preset mean range; if at least one of the above conditions is met, it is determined that the step is interfered with.

[0012] The step of determining the credibility level based on the ratio of the number of interfering steps to the total number of steps includes: if the ratio of the number of interfering steps to the total number of steps is less than or equal to a third ratio threshold, then the credibility level is determined to be a first level; if the ratio of the number of interfering steps to the total number of steps is greater than the third ratio threshold and less than or equal to a fourth ratio threshold, then the credibility level is determined to be a second level; if the ratio of the number of interfering steps to the total number of steps is greater than the fourth ratio threshold, then the credibility level is determined to be a third level; wherein the third ratio threshold is less than the fourth ratio threshold.

[0013] The step of determining the pre-inflation pressure value for the next blood pressure measurement based on the current blood pressure measurement result and the reliability includes: if the reliability level is determined to be the first level, then the sum of the measurement result and the first preset adjustment value is used as the pre-inflation pressure value for the next blood pressure measurement; if the reliability level is determined to be the second level, then the sum of the measurement result and the first preset adjustment value minus the second preset adjustment value is used as the pre-inflation pressure value for the next blood pressure measurement; if the reliability level is determined to be the third level, then the default pre-inflation pressure value is used as the pre-inflation pressure value for the next blood pressure measurement.

[0014] To address the aforementioned technical problems, a second aspect of this application provides a blood pressure detection device, comprising a processor and a memory. The memory stores program data, and the processor executes the program data to implement the method for determining the pre-inflation pressure value as provided in the first aspect above.

[0015] To address the aforementioned technical problems, a third aspect of this application provides a computer-readable storage medium storing program data, which, when executed by a processor, is used to implement the method for determining the pre-inflation pressure value as provided in the first aspect above.

[0016] The beneficial effects of this application are as follows: Unlike the prior art, this application evaluates the reliability of the current blood pressure measurement and uses the test results and reliability of the current blood pressure measurement to determine the pre-inflation pressure value for the next blood pressure measurement. It can determine an adaptive pre-inflation pressure value based on the test results of the current blood pressure measurement, improve the accuracy of the pre-inflation pressure value, reduce the error in the test results caused by the deviation of the pre-inflation pressure value, and thus improve the accuracy of blood pressure measurement. Attached Figure Description

[0017] Figure 1 This is a flowchart illustrating an embodiment of the method for determining the pre-inflation pressure value of this application;

[0018] Figure 2 This is a schematic flowchart illustrating an embodiment of this application for determining the reliability of a current blood pressure measurement;

[0019] Figure 3 This is a flowchart illustrating another embodiment of the present application for determining the reliability of the current blood pressure measurement;

[0020] Figure 4 This is a flowchart illustrating an embodiment of this application for determining the pre-inflation pressure value for the next blood pressure measurement;

[0021] Figure 5This is a schematic block diagram of the circuit structure of an embodiment of the blood pressure detection device of this application;

[0022] Figure 6 This is a schematic block diagram of the circuit structure of another embodiment of the blood pressure detection device of this application;

[0023] Figure 7 This is a schematic block diagram of the circuit structure of an embodiment of the computer-readable storage medium of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] The terms "first" and "second" in this application are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features shown. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or apparatus.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] Please see Figure 1 , Figure 1 This is a schematic flowchart illustrating an embodiment of the method for determining the pre-inflation pressure value according to this application. The method for determining the pre-inflation pressure value in this embodiment includes:

[0028] S10, perform the current blood pressure test.

[0029] The current blood pressure measurement can be any blood pressure measurement during the non-invasive blood pressure measurement process, such as the first measurement or a subsequent measurement.

[0030] It is understood that when the current blood pressure measurement is the first measurement, the pre-inflation operation can be performed according to the default pre-inflation pressure value; when the current blood pressure measurement is not the first measurement, the pre-inflation operation can be performed according to the pre-inflation pressure value determined by this application based on the previous blood pressure measurement in order to obtain accurate measurement results.

[0031] The default pre-inflation pressure can be set according to different detection modes. For example, the default pre-inflation pressure is 150 mmHg for adult mode, 140 mmHg for pediatric mode, and 100 mmHg for neonatal mode. The pre-inflation pressure settings for the above detection modes are for illustrative purposes only, and other settings are also possible.

[0032] S20, determine the reliability of the current blood pressure measurement.

[0033] The reliability of the current blood pressure measurement reflects its accuracy. Generally, in non-invasive blood pressure monitoring, the pre-inflation pressure for the next measurement is determined directly using the blood pressure parameters from the current measurement. If the reliability of the current measurement is low, the reliability of the pre-inflation pressure for the next measurement, determined from the parameters of the previous measurement, will also be low, meaning the accuracy of the pre-inflation pressure for the next measurement will be low. Specifically, if the pre-inflation pressure for the next measurement is too high, the pre-inflation process will be longer, wasting time and causing significant pressure on the patient's arm, resulting in poor comfort. If the pre-inflation pressure for the next measurement is too low, air needs to be added during the measurement, leading to a longer measurement time and a reduced user experience. The next blood pressure measurement is defined as the measurement immediately following and after the current measurement.

[0034] Therefore, this step assesses the reliability of the current blood pressure measurement, which helps determine the calculation method for the pre-inflation pressure value of the next blood pressure measurement based on the reliability of the current blood pressure measurement. This improves the accuracy of the pre-inflation pressure value for the next blood pressure measurement and avoids deviations in the pre-inflation pressure value of the next blood pressure measurement due to the use of the same algorithm to calculate the pre-inflation pressure value by ignoring the reliability of the current blood pressure measurement.

[0035] The reliability of the blood pressure measurement in this application is related to the degree of interference during the blood pressure measurement process. The greater the interference during the blood pressure measurement process, the lower the reliability of the blood pressure measurement results; the less interference during the blood pressure measurement process, the higher the reliability of the blood pressure measurement results. Since the subject needs to remain in a quiet, non-exercising state during blood pressure measurement, the collected blood pressure data results are referential and usable. Therefore, the degree of interference in this application mainly refers to the degree of motion interference.

[0036] In one embodiment, this step can be achieved by acquiring motion information during the current blood pressure measurement and determining the reliability of the current blood pressure measurement based on the motion information. Specifically, motion sensing devices, such as accelerometers and angle sensors, can be installed on the cuff. During the blood pressure measurement, the motion sensing devices can be used to determine the subject's movement or motion status and, based on this, the degree of interference experienced by the subject during the blood pressure measurement.

[0037] Specifically, the reliability level of the current blood pressure measurement can be determined by using the ratio of exercise time to the total measurement time during the current blood pressure measurement. For more details, please refer to [link to relevant documentation]. Figure 2 In this embodiment, determining the reliability of the current blood pressure measurement may include the following steps:

[0038] S210: Obtain motion information during the current blood pressure measurement process.

[0039] Motion information can be detected using motion sensor devices such as accelerometers and angle sensors.

[0040] S211: Determine the exercise time and total testing time during the current blood pressure measurement process.

[0041] Among them, motion time refers to the time the subject is in a non-stationary state, and total detection time refers to the time the subject is in the detection state.

[0042] This step utilizes motion sensor devices to assist in calculating the motion time t1 and the total detection time T during the current blood pressure measurement. Specifically, the blood pressure measurement process involves multiple steps. After the blood pressure measurement begins, the motion time and total duration of each step are calculated sequentially. After the measurement is completed, the motion time and total duration of all steps are summed to obtain the total motion time and total detection time.

[0043] S212: Calculate the ratio of exercise time to total measurement time during the current blood pressure measurement.

[0044] If the ratio of exercise time to total measurement time during the current blood pressure measurement is PCT, then...

[0045] S213: Determine the reliability level of the current blood pressure measurement.

[0046] This step determines the reliability level of the current blood pressure measurement by using the ratio of exercise time to the total measurement time. A smaller ratio indicates less interference during the measurement process, resulting in higher reliability of the obtained blood pressure parameters; conversely, a larger ratio indicates greater interference during the measurement process, leading to lower reliability of the obtained blood pressure parameters.

[0047] Specifically, the credibility level in this embodiment can be divided into three levels: Level 1, Level 2, and Level 3. Level 1 represents the highest credibility, and Level 3 represents the lowest credibility. The credibility level is determined as follows (1) to (3):

[0048] (1) If the ratio of exercise time to total test time during the previous blood pressure test is less than or equal to the first ratio threshold, the confidence level is determined to be the first level.

[0049] (2) If the ratio of exercise time to total detection time during the current blood pressure test is greater than the first ratio threshold and less than or equal to the second ratio threshold, then the confidence level is determined to be the second level.

[0050] (3) If the ratio of exercise time to total test time during the current blood pressure test is greater than the second ratio threshold, the confidence level is determined to be the third level.

[0051] Wherein, the first proportional threshold is less than the second proportional threshold. In a specific embodiment, the first proportional threshold is 0.1 and the second proportional threshold is 0.3.

[0052] In another embodiment, the reliability of the current blood pressure measurement can be determined based on the measurement result of the current blood pressure measurement. Specifically, since blood pressure measurement involves multiple steps, interference can be assessed for the measurement results of each step in the current blood pressure measurement to determine the number of steps with interference in the current blood pressure measurement. It is understood that the fewer the number of steps with interference, the less interference the current blood pressure measurement is subject to, resulting in higher accuracy and reliability of the measurement result.

[0053] Please see Figure 3 , Figure 3 A schematic flowchart illustrating another embodiment for determining the reliability of the current blood pressure measurement in this application. The steps are as follows:

[0054] S220: Perform interference assessment on the results of each step of the current blood pressure measurement to determine the number of steps with interference in the current blood pressure measurement.

[0055] Each step is judged individually. If the detection result of a step meets at least one of the following conditions a to c, then the step is considered to have interference.

[0056] a: The difference between the highest and lowest valley points of the waveform obtained by the step is greater than the preset threshold.

[0057] The preset threshold can be any value within the range of 0.5 mmHg to 2 mmHg.

[0058] b: The number of waveforms is greater than the preset number threshold, and the ratio of the maximum waveform amplitude to the minimum waveform amplitude is greater than the preset ratio threshold.

[0059] The preset quantity threshold can be 6, and the preset ratio threshold can be any value in the range of 2.5 to 4.

[0060] c: The mean of the time axis spacing between adjacent pulse waveforms is not within the preset mean range.

[0061] The preset mean range can be 0.15s to 2s.

[0062] It is understood that the above values ​​and ranges are merely illustrative, and those skilled in the art can set specific values ​​and limit the ranges of each value based on the above description.

[0063] Optionally, before executing step S220, the pulse waveform obtained for each step is filtered to remove noise signals from the pulse waveform and retain waveforms with amplitudes greater than an amplitude threshold, thereby reducing the impact of noise signals on the difference calculation results. The amplitude threshold can be any value between 0.04 mmHg and 0.06 mmHg, for example, an amplitude threshold of 0.05 mmHg.

[0064] S221: The reliability level of the current blood pressure measurement is determined by using the ratio of the number of steps with interference to the total number of steps as the reliability criterion.

[0065] Step S220 determines whether interference exists in each step, and based on this, the number of steps with interference s1 in the current blood pressure measurement can be counted, and the ratio of the number of steps with interference s1 to the total number of steps S can be calculated. The reliability level of the current blood pressure measurement can be determined based on the ratio PT. A larger PT indicates a higher number of interfering steps (s1) in the current blood pressure measurement, resulting in lower reliability; conversely, a smaller PT indicates a lower number of interfering steps (s1) in the current blood pressure measurement, resulting in higher reliability.

[0066] Specifically, the credibility level in this embodiment can be divided into three levels: the first level, the second level, and the third level. The first level represents the highest credibility, and the third level represents the lowest credibility. The credibility level is determined in step S221 as follows (4) to (6):

[0067] (4) If the ratio of the number of interfering steps to the total number of steps is less than or equal to the third ratio threshold, the credibility level is determined to be the first level.

[0068] (5) If the ratio of the number of interfering steps to the total number of steps is greater than the third ratio threshold and less than or equal to the fourth ratio threshold, then the credibility level is determined to be the second level.

[0069] (6) If the ratio of the number of interfering steps to the total number of steps is greater than the fourth ratio threshold, the credibility level is determined to be the third level.

[0070] The third proportional threshold is less than the fourth proportional threshold. In a specific embodiment, the third proportional threshold is 0.1 and the fourth proportional threshold is 0.3.

[0071] S30, based on the results and reliability of the current blood pressure measurement, determine the pre-inflation pressure value for the next blood pressure measurement.

[0072] The confidence level of the current blood pressure measurement determined in step S20 is one of the first, second, or third levels. This step determines the pre-inflation pressure value for the next blood pressure measurement based on the measurement result and confidence level of the current blood pressure measurement.

[0073] Specifically, the pre-inflation pressure value for the next blood pressure measurement can be determined using the following methods (d to f):

[0074] d: If the confidence level is determined to be Level 1, then the sum of the current blood pressure test result and the first preset adjustment value shall be used as the pre-inflation pressure value for the next blood pressure test.

[0075] Specifically, the systolic pressure or mean pressure from the current blood pressure measurement can be summed with a first preset adjustment value to serve as the pre-inflation pressure value for the next blood pressure measurement.

[0076] For example, the sum of the systolic blood pressure obtained from the current blood pressure measurement and the first preset adjustment value can be used as the pre-inflation pressure value for the next blood pressure measurement. The pre-inflation pressure value for the next blood pressure measurement can be calculated using the following formula:

[0077] NPIP = CS + ΔP1

[0078] Wherein, NPIP represents the pre-inflate pressure value for the next blood pressure measurement, CS represents the systolic pressure of the current blood pressure measurement, and ΔP1 represents the first preset adjustment value.

[0079] The first preset adjustment value ΔP1 ranges from 20 mmHg to 40 mmHg. In adult mode, the first preset adjustment value ΔP1 can be set to a higher value, such as any value within the range of 35 mmHg to 40 mmHg, specifically 40 mmHg. When measuring blood pressure in infants and young children, the first preset adjustment value ΔP1 can be set to a lower value. For example, in pediatric mode, the first preset adjustment value ΔP1 can be set to any value within the range of 25 mmHg to 35 mmHg, specifically 30 mmHg; in neonatal mode, the first preset adjustment value ΔP1 can be set to any value within the range of 20 mmHg to 25 mmHg, specifically 20 mmHg.

[0080] e: If the confidence level is determined to be the second level, then the sum of the test result and the first preset adjustment value, minus the second preset adjustment value, is used as the pre-inflation pressure value for the next blood pressure test.

[0081] Specifically, the systolic pressure or mean pressure from the current blood pressure measurement can be summed with a first preset adjustment value to serve as the pre-inflation pressure value for the next blood pressure measurement.

[0082] For example, the pre-inflation pressure value for the next blood pressure measurement can be obtained by subtracting the second preset adjustment value from the sum of the systolic pressure obtained from the current blood pressure measurement and the first preset adjustment value. The pre-inflation pressure value for the next blood pressure measurement can be calculated using the following formula:

[0083] NPIP = CS + ΔP1 - ΔP2

[0084] Wherein, NPIP represents the pre-inflate pressure value for the next blood pressure measurement, CS represents the systolic blood pressure value for the current blood pressure measurement, ΔP1 represents the first preset adjustment value, and ΔP2 represents the second preset adjustment value.

[0085] The second preset adjustment value ΔP2 ranges from 5 mmHg to 15 mmHg. In adult mode, the second preset adjustment value ΔP2 can be set to a higher value, such as any value within the range of 12 mmHg to 15 mmHg, specifically 15 mmHg. When measuring blood pressure in infants and young children, the second preset adjustment value ΔP2 can be set to a lower value. For example, in pediatric mode, the second preset adjustment value ΔP2 can be set to any value within the range of 8 mmHg to 12 mmHg, specifically 10 mmHg; in neonatal mode, the second preset adjustment value ΔP2 can be set to any value within the range of 5 mmHg to 8 mmHg, specifically 5 mmHg.

[0086] Furthermore, when the difference between the default pre-inflation pressure value and the systolic pressure obtained from the current blood pressure measurement is greater than a preset difference, the second preset adjustment value ΔP2 takes a negative value. That is, the pre-inflation pressure value for the next blood pressure measurement is: NPIP = CS + ΔP1 + ΔP2. In a specific embodiment, the preset difference is 40 mmHg.

[0087] f: If the confidence level is determined to be level three, then the default pre-inflation pressure value will be used as the pre-inflation pressure value for the next blood pressure measurement.

[0088] If the reliability level of the current blood pressure measurement is level three, it indicates that the reliability of the current blood pressure measurement is low. The accuracy of calculating the pre-inflation pressure value for the next blood pressure measurement based on the result of the current blood pressure measurement is low. Therefore, the default pre-inflation pressure value is directly used as the pre-inflation pressure value for the next blood pressure measurement.

[0089] In another embodiment, step S30 may determine the pre-inflation pressure value for the next blood pressure measurement without relying on the results and reliability of the current blood pressure measurement. For example, the results and reliability level information of each blood pressure measurement can be stored. If the number of stored results with a reliability level of first or second is greater than or equal to a second preset number (the second preset number can be, for example, 2), then the sum of the average systolic pressure of the results with a reliability level of first or second and a first preset adjustment value is used as the pre-inflation pressure value for the next blood pressure measurement. The pre-inflation pressure value for the next blood pressure measurement can then be expressed as follows:

[0090] NPIP = PreSYS + ΔP1

[0091] Wherein, NPIP represents the pre-inflate pressure value for the next blood pressure measurement, ΔP1 represents the first preset adjustment value, and PreSYS represents the mean systolic blood pressure in the test results with a confidence level of first or second level.

[0092] In one specific embodiment, please refer to Figure 4 The pre-inflation pressure for the next blood pressure measurement can be determined using the following steps:

[0093] S301: Determine whether the number of detection results stored in the storage area is greater than or equal to the first preset number.

[0094] If yes, proceed to step S302; otherwise, proceed to step S304.

[0095] S302: Determine whether the number of stored detection results with a confidence level of first level and / or second level is greater than or equal to a second preset number.

[0096] If yes, proceed to step S303; otherwise, proceed to step S304.

[0097] S303, the sum of the mean systolic blood pressure in the test results with a confidence level of first or second level and the first preset adjustment value is used as the pre-inflation pressure value for the next blood pressure test.

[0098] The pre-inflation pressure for the next blood pressure measurement can be expressed as follows:

[0099] NPIP = PreSYS + ΔP1

[0100] Wherein, NPIP represents the pre-inflate pressure value for the next blood pressure measurement, ΔP1 represents the first preset adjustment value, and PreSYS represents the mean systolic blood pressure in the test results with a confidence level of first or second level.

[0101] S304: Execute step S30.

[0102] If the number of test results stored in the storage area is less than the first preset number, or if the number of test results with a confidence level of first and / or second level is less than the second preset number, it indicates that the test results in the storage area are insufficient to serve as the basis for calculating the pre-inflation pressure value for the next blood pressure test. In this case, the pre-inflation pressure value for the next blood pressure test will still be calculated based on the test results and confidence level of the current blood pressure test. Please refer to step S30 above for details, which will not be repeated here.

[0103] The first preset quantity and the second preset quantity can be the same or different. For example, the first preset quantity and the second preset quantity can both be 2.

[0104] Unlike existing technologies, this application assesses the reliability of the current blood pressure measurement and determines the pre-inflation pressure value for the next blood pressure measurement based on the reliability assessment result and the current blood pressure measurement result. This reduces the impact of motion interference on the pre-inflation pressure value for the next blood pressure measurement and has a certain degree of adaptability, ensuring proper pre-inflation for the next blood pressure measurement. On the one hand, it avoids wasting time on supplementing air due to insufficient pre-inflation; on the other hand, it avoids excessive pre-inflation that compresses the measurement site, thus improving comfort.

[0105] Please see Figure 5 , Figure 5 This is a schematic block diagram of the circuit structure of an embodiment of the blood pressure detection device of this application. The blood pressure detection device 200 includes a processor 201 and a memory 202. The memory 202 is used to store program data, and the processor 201 is used to execute the program data to implement the following method:

[0106] Perform the current blood pressure measurement, determine the reliability of the current blood pressure measurement, and determine the pre-inflation pressure value for the next blood pressure measurement based on the measurement results and reliability of the current blood pressure measurement.

[0107] Understandably, the processor 201 in this embodiment is also used to implement the steps of the various embodiments of the method for determining the pre-inflation pressure value described above. For a description of each step of the processing, please refer to the description of each step in the embodiments of the method for determining the pre-inflation pressure value described above; it will not be repeated here.

[0108] Please see Figure 6 , Figure 6 This is a schematic block diagram of the circuit structure of another embodiment of the blood pressure measuring device of this application. The blood pressure measuring device 400 includes a blood pressure detection module 401, a reliability determination module 402, and a pre-inflation pressure determination module 403 connected in sequence.

[0109] The blood pressure detection module 401 is used to perform the current blood pressure detection; the credibility determination module 402 is used to determine the credibility of the current blood pressure detection; and the pre-inflation pressure determination module 403 is used to determine the pre-inflation pressure value for the next blood pressure detection based on the detection result and credibility of the current blood pressure detection.

[0110] The blood pressure measuring device 400 also includes a data acquisition module 404, which is connected to the blood pressure detection module 401 and the credibility determination module 402. The data acquisition module 404 is used to acquire motion information during the current blood pressure detection process, and the credibility determination module 402 is also used to determine the credibility of the current blood pressure detection based on the motion information.

[0111] The data acquisition module 404 is also used to obtain the ratio of exercise time to total detection time during the current blood pressure test, and the credibility determination module 402 is also used to determine the credibility level of the current blood pressure test based on the ratio of exercise time to total detection time.

[0112] The credibility determination module 402 is further used to determine the relationship between the ratio of exercise time to total detection time in the current blood pressure detection process and the first and second proportional thresholds. When the ratio of exercise time to total detection time in the current blood pressure detection process is less than or equal to the first proportional threshold, the credibility level is determined to be the first level; when the ratio of exercise time to total detection time in the current blood pressure detection process is greater than the first proportional threshold and less than or equal to the second proportional threshold, the credibility level is determined to be the second level; when the ratio of exercise time to total detection time in the current blood pressure detection process is greater than the second proportional threshold, the credibility level is determined to be the third level; wherein the first proportional threshold is less than the second proportional threshold.

[0113] The data acquisition module 404 is also used for the detection results of the current blood pressure test, and the credibility determination module 402 is also used to determine the credibility of the current blood pressure test based on the detection results of the current blood pressure test.

[0114] The credibility determination module 402 is also used to determine the interference of the detection results of each step of the current blood pressure test, so as to determine the number of steps with interference in the current blood pressure test; and to determine the credibility level of the current blood pressure test based on the ratio of the number of steps with interference to the total number of steps.

[0115] The credibility determination module 402 is also used to determine whether the step meets at least one of the following conditions: the difference between the highest and lowest valley points of the waveform obtained by the step is greater than a preset threshold; the number of waveforms is greater than a preset quantity threshold, and the ratio of the maximum waveform amplitude to the minimum waveform amplitude is greater than a preset ratio threshold; the average value of the time axis spacing between adjacent pulse waveforms is not within a preset average value range; if at least one of the above conditions is met, it is determined that there is interference in the step.

[0116] The credibility determination module 402 is further used to determine the relationship between the ratio of the number of interfering steps to the total number of steps and the third and fourth proportional thresholds. When the ratio of the number of interfering steps to the total number of steps is less than or equal to the third proportional threshold, the credibility level is determined to be the first level; when the ratio of the number of interfering steps to the total number of steps is greater than the third proportional threshold and less than or equal to the fourth proportional threshold, the credibility level is determined to be the second level; when the ratio of the number of interfering steps to the total number of steps is greater than the fourth proportional threshold, the credibility level is determined to be the third level; wherein the third proportional threshold is less than the fourth proportional threshold.

[0117] The pre-inflation pressure determination module 403 is further configured to: when the confidence level is at the first level, use the sum of the detection result and the first preset adjustment value as the pre-inflation pressure value for the next blood pressure detection; when the confidence level is at the second level, use the sum of the detection result and the first preset adjustment value minus the second preset adjustment value as the pre-inflation pressure value for the next blood pressure detection; and when the confidence level is at the third level, use the default pre-inflation pressure value as the pre-inflation pressure value for the next blood pressure detection.

[0118] The blood pressure measuring device 400 also includes a pre-inflation pressure acquisition module 405, which is connected to the blood pressure detection module 401 and the pre-inflation pressure determination module 403. The pre-inflation pressure acquisition module 405 is used to send the pre-inflation pressure value for the next blood pressure measurement determined by the pre-inflation pressure determination module 403 to the blood pressure detection module 401. The blood pressure detection module 401 is also used to pre-inflate the blood pressure according to the pre-inflation pressure value for the next blood pressure measurement in order to perform blood pressure measurement on the subject.

[0119] See Figure 7 , Figure 7 This is a schematic block diagram of a circuit structure of an embodiment of a computer-readable storage medium 300 of this application. The computer-readable storage medium 300 stores program data 301, which, when executed by a processor, is used to implement the following method:

[0120] Perform the current blood pressure measurement, determine the reliability of the current blood pressure measurement, and determine the pre-inflation pressure value for the next blood pressure measurement based on the measurement results and reliability of the current blood pressure measurement.

[0121] Understandably, the program data 301 in this embodiment is executed by the processor to also implement the steps of the various embodiments of the method for determining the pre-inflation pressure value of this application described above.

[0122] For a description of each step of the processing, please refer to the description of each step in the above embodiment of the method for determining the pre-inflation pressure value of this application, and it will not be repeated here.

[0123] The computer-readable storage medium 300 can be any medium capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0124] In the several embodiments provided in this application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0125] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0126] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0127] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for determining the pre-inflation pressure value, characterized in that, The method includes: Perform the current blood pressure measurement; Determine the reliability of the current blood pressure measurement; Based on the results of the current blood pressure measurement and the reliability, determine the pre-inflation pressure value for the next blood pressure measurement; The step of determining the pre-inflation pressure value for the next blood pressure measurement based on the current blood pressure measurement result and the reliability includes: If the confidence level is determined to be the first level, then the sum of the detection result and the first preset adjustment value shall be used as the pre-inflation pressure value for the next blood pressure detection. If the confidence level is determined to be the second level, then the sum of the detection result and the first preset adjustment value, minus the second preset adjustment value, is used as the pre-inflation pressure value for the next blood pressure test. If the confidence level is determined to be level three, then the default pre-inflation pressure value is used as the pre-inflation pressure value for the next blood pressure measurement.

2. The method according to claim 1, characterized in that, Determining the reliability of the current blood pressure measurement includes: Obtain motion information during the current blood pressure measurement process; The reliability of the current blood pressure measurement is determined based on the exercise information.

3. The method according to claim 2, characterized in that, The acquisition of motion information during the current blood pressure measurement process includes: Obtain the ratio of exercise time to total detection time during the current blood pressure measurement; Determining the reliability of the current blood pressure measurement based on the exercise information includes: The reliability level of the current blood pressure measurement is determined based on the ratio of the exercise time to the total detection time.

4. The method according to claim 3, characterized in that, Determining the reliability level of the current blood pressure measurement includes: If the ratio of the exercise time to the total detection time during the current blood pressure measurement is less than or equal to a first ratio threshold, then the confidence level is determined to be the first level. If the ratio of the exercise time to the total detection time during the current blood pressure measurement is greater than the first ratio threshold and less than or equal to the second ratio threshold, then the confidence level is determined to be the second level. If the ratio of the exercise time to the total detection time during the current blood pressure measurement is greater than the second ratio threshold, then the confidence level is determined to be the third level. Wherein, the first proportional threshold is less than the second proportional threshold.

5. The method according to claim 1, characterized in that, Determining the reliability of the current blood pressure measurement includes: Obtain the test result of the current blood pressure measurement; The reliability of the current blood pressure measurement is determined based on the measurement results.

6. The method according to claim 5, characterized in that, The step of determining the reliability of the current blood pressure measurement based on the measurement result includes: Interference is assessed on the test results of each step of the current blood pressure measurement to determine the number of steps in the current blood pressure measurement where interference exists. The reliability level of the current blood pressure measurement is determined based on the ratio of the number of interfering steps to the total number of steps.

7. The method according to claim 6, characterized in that, The interference judgment on the detection results of each step of the current blood pressure measurement includes: Determine whether the stairs satisfy at least one of the following conditions: The difference between the highest and lowest valley points of the waveform obtained by the step is greater than a preset threshold. The number of waveforms is greater than a preset number threshold, and the ratio of the maximum waveform amplitude to the minimum waveform amplitude is greater than a preset ratio threshold. The mean of the time axis spacing between adjacent pulses is not within the preset mean range; If at least one of the above conditions is met, then it is determined that there is interference in the staircase.

8. The method according to claim 6, characterized in that, Determining the confidence level based on the ratio of the number of steps with interference to the total number of steps includes: If the ratio of the number of steps with interference to the total number of steps is less than or equal to the third ratio threshold, then the confidence level is determined to be the first level. If the ratio of the number of steps with interference to the total number of steps is greater than the third ratio threshold and less than or equal to the fourth ratio threshold, then the confidence level is determined to be the second level. If the ratio of the number of steps with interference to the total number of steps is greater than the fourth ratio threshold, then the confidence level is determined to be the third level. Wherein, the third proportional threshold is less than the fourth proportional threshold.

9. A blood pressure detection device, characterized in that, The blood pressure detection device includes a processor and a memory, the memory being used to store program data, and the processor being used to execute the program data to implement the method as described in any one of claims 1-8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores program data, which, when executed by a processor, is used to implement the method as described in any one of claims 1-8.

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