CN117752313A

CN117752313A - Blood pressure measuring device, method for judging existence of atrial fibrillation, and readable storage medium

Info

Publication number: CN117752313A
Application number: CN202311868207.6A
Authority: CN
Inventors: 魏贺; 王成正; 刘运红
Original assignee: Jiangsu Yuyue Medical Equipment and Supply Co Ltd; Nanjing Yuyue Software Technology Co Ltd
Current assignee: Jiangsu Yuyue Medical Equipment and Supply Co Ltd; Nanjing Yuyue Software Technology Co Ltd
Priority date: 2023-12-31
Filing date: 2023-12-31
Publication date: 2024-03-26

Abstract

The invention discloses a blood pressure measuring device, a method for judging the existence of atrial fibrillation and a readable storage medium. The method comprises the following steps: pulse waveform detection and judgment, and continuously acquiring pulse interval sequences with enough quantity in a single decompression process; the difference value sequence judges that the atrial fibrillation exists, the small sequence judges that the atrial fibrillation exists, whether the variation of the pulse sequence is larger than the pulse variation threshold value or not is judged through the pulse interval difference value sequence, the pulse interval difference value sequence is evenly distributed into a plurality of small sequences, and the atrial fibrillation is judged when the sequence result sum value is larger than the result set value. According to the method, enough pulse interval sequence data can be acquired in the decompression process of single blood pressure measurement to judge whether the atrial fibrillation exists in a difference sequence manner or not, whether the atrial fibrillation exists in a small sequence manner or not is judged, multiple times of measurement is not needed, the accuracy and the referenceability of the acquired multiple pulse interval sequence data can be ensured, data guarantee is provided for the judgment result of the atrial fibrillation, and misjudgment is avoided.

Description

Blood pressure measuring device, method for judging existence of atrial fibrillation, and readable storage medium

Technical Field

The invention relates to the technical field of blood pressure measurement, in particular to a blood pressure measurement device with artificial intelligence auxiliary guidance in a full first-aid process, a method for judging the existence of atrial fibrillation and a readable storage medium.

Background

The statements in this section merely provide background information related to the present application and may not necessarily constitute prior art.

When the blood pressure measuring device adopted at present is used for measuring blood pressure, the blood pressure measured value can be obtained through pulse wave signals, and the pulse wave signals reflect the change condition of blood pressure, wherein the fluctuation is caused by heart contraction. In blood pressure measurement, an oscillometric method is generally used to detect pulse wave signals, which blocks arterial blood flow by inflating a pressurizing cuff, then gradually deflating and releasing pressure, and simultaneously detecting the gas pressure in the cuff and extracting weak pulse wave signals; when the cuff pressure is far higher than the systolic pressure, the pulse wave disappears; as the cuff pressure drops to systolic pressure, a pulse begins to appear; when the cuff pressure continues to decrease, the pulse wave amplitude gradually increases and reaches a maximum value when the pressure is equalized, and the measurement value of the blood pressure can be estimated from the relationship between the pulse wave amplitude and the cuff pressure.

By analyzing the pulse wave signal, the health of the cardiovascular system can also be assessed. For example, in the electronic blood pressure meter and the atrial fibrillation determination method in the electronic blood pressure meter disclosed in the patent of publication No. CN 116634947a, three or more measurement opportunities of the detector are aggregated to obtain an average value of pulse wave intervals, and whether atrial fibrillation is likely to occur is determined based on whether or not there is irregular pulse wave data exceeding a preset allowable range with respect to the average value in the aggregated data set. For another example, in the apparatus and method for measuring blood pressure and for indicating the presence of atrial fibrillation disclosed in the patent of publication number CN 113349751A, three separate sequences of pulse beats are employed to determine the presence of atrial fibrillation.

It is not difficult to find that in the prior art of using blood pressure measurement devices to determine the presence of atrial fibrillation, multiple independent sequences need to be acquired by way of multiple pressure measurements to determine the presence of atrial fibrillation, resulting in a poor experience for the user and a much longer measurement time.

Therefore, how to solve the problem that the existing technology needs to acquire a plurality of independent ways to determine the existence of atrial fibrillation by using a plurality of pressurization measurements and make the user experience bad is the subject to be studied and solved by the invention.

Disclosure of Invention

The invention aims to provide a blood pressure measuring device, a method for judging the existence of atrial fibrillation, and a readable storage medium, and provides a scheme for further judging the existence of atrial fibrillation according to pulse interval sequences acquired in a single blood pressure measuring process during blood pressure measurement.

To achieve the above object, a first aspect of the present invention provides a method for determining the presence of atrial fibrillation by blood pressure measurement, the method comprising:

s100, pulse waveform detection and judgment, wherein in the pressure reduction process of blood pressure measurement, a plurality of target pressure sequences and pulse amplitude signal sequences corresponding to the target pressure are obtained, pulse interval sequences are calculated, whether the irregular pulse number in the pulse interval sequences is larger than an irregular pulse threshold value is judged, if not, no atrial fibrillation exists, if yes, a sufficient number of pulse interval sequences are continuously obtained in the single pressure reduction process, and step S200 is carried out;

s200, judging that atrial fibrillation exists according to the difference value sequences, calculating pulse interval difference value sequences according to the acquired pulse interval sequences, judging whether the variation of the pulse sequences is larger than a pulse variation threshold value or not according to the pulse interval difference value sequences, if not, judging that the atrial fibrillation does not exist, and if so, judging that the atrial fibrillation exists and performing step S300;

S300, judging that atrial fibrillation exists by small sequences, evenly distributing pulse interval difference value sequences into a plurality of small sequences, respectively calculating and judging whether the variation of each small sequence is larger than a pulse variation threshold value, counting the small sequences larger than the pulse variation threshold value and obtaining sequence results and values, judging that atrial fibrillation exists when the sequence results and values are larger than the result set values, and otherwise, judging that atrial fibrillation does not exist.

A second aspect of the present invention proposes a blood pressure measurement device for determining the presence of atrial fibrillation in the blood pressure measurement in the method of the first aspect, the device comprising a main control unit, a display unit, a pressurizing portion, a depressurizing portion, a pressure pulse detecting unit, and an atrial fibrillation determining unit;

the pressure pulse detection unit is used for acquiring a plurality of target pressure sequences and pulse amplitude signal sequences corresponding to the target pressure in the decompression process, and transmitting the pulse amplitude signal sequences to the main control unit for operation and processing;

the main control unit is electrically connected with the display unit, the pressure pulse detection unit, the atrial fibrillation judgment unit, the pressurizing part and the decompression part, the main control unit controls the pressurizing part to pressurize to a preset pressure, then the main control unit controls the decompression part to slowly decompress, and a pulse interval sequence with enough quantity is obtained in a single decompression process of slow decompression;

The atrial fibrillation judging unit judges the existence of atrial fibrillation by using a pulse interval sequence with a sufficient number, and judges the existence of atrial fibrillation by using a small sequence so as to finally judge whether the atrial fibrillation exists or not;

the pressurizing part is used for controlling the pressurizing of the cuff air bag and pressurizing the cuff air bag to a preset pressurizing value;

the pressure reducing part is used for slowly deflating the cuff air bag in the pressure reducing process, and keeping the current pressure to continuously acquire a pulse interval sequence or quickly deflate when the measurement is finished;

the display unit is used for displaying the blood pressure result calculated by the main control unit, the atrial fibrillation result judged by the atrial fibrillation judgment unit and the state information of the measuring process.

A third aspect of the present invention proposes a readable storage medium having stored thereon a control program which, when executed by a main control unit, causes the main control unit to execute the steps of the method of determining the presence of atrial fibrillation as described in the first aspect of the blood pressure measurement.

The content of the present invention is explained as follows:

1. the implementation of the technical scheme of the invention aims at the problems of poor user experience and long measurement time caused by the fact that a plurality of independent sequences are needed to be acquired through a plurality of pressurized measurement modes to determine the existence of atrial fibrillation in the prior art, and provides a scheme for further judging the existence of atrial fibrillation according to pulse interval sequences acquired in a single blood pressure measurement process during blood pressure measurement. In the scheme, in order to acquire a pulse interval sequence with sufficient and correct quantity, a pulse amplitude signal sequence is acquired in the decompression process of blood pressure measurement, the pulse interval sequence is calculated, the quantity of irregular pulse waves exceeding a threshold value in the blood pressure measurement process is enough by judging whether the quantity of the irregular pulse waves in the pulse interval sequence is larger than the irregular pulse threshold value, the judgment of whether the quantity of the pulse waves is enough to perform atrial fibrillation is further judged, and the decompression part is controlled to keep the current pressure to continuously detect under the condition that the quantity of the pulse waves is insufficient until the quantity of the pulse waves is enough to enable enough data to be acquired in the decompression process of single blood pressure measurement to perform atrial fibrillation judgment, a user does not need to go through the compression and decompression processes of carrying out the blood pressure measurement for many times, discomfort of the user is avoided, and atrial fibrillation judgment duration is reduced; in the step of judging the existence of atrial fibrillation in the difference sequence, calculating a pulse interval difference sequence according to the acquired multiple pulse interval sequences, judging whether the variation of the pulse sequence is larger than a pulse variation threshold value or not according to the pulse interval difference sequence, so as to further ensure the accuracy and the referenceability of the acquired multiple pulse interval sequence data, further provide data guarantee for subsequent judgment, and avoid the occurrence of erroneous judgment; in the step of judging the existence of atrial fibrillation in small sequences, pulse interval difference value sequences are evenly distributed into a plurality of small sequences, then each small sequence is judged and counted, so that the purpose of judging the existence of atrial fibrillation by using data acquired in the decompression process of single blood pressure measurement is further achieved, and the process judges the digital information presented in the pulse amplitude signal sequence corresponding to atrial fibrillation more precisely and finely, so that the erroneous judgment of atrial fibrillation is further avoided. By the application of the method and the device for judging the existence of the atrial fibrillation through the blood pressure measurement, enough pulse interval sequence data can be acquired in the decompression process of single blood pressure measurement to judge the existence of the atrial fibrillation in a difference sequence mode, and the existence of the atrial fibrillation in a small sequence mode, so that multiple measurements are not needed, the accuracy and the referenceability of the acquired pulse interval sequence data can be ensured, data guarantee is provided for the judgment result of the atrial fibrillation, and erroneous judgment is avoided.

2. In the first aspect of the above technical solution, in the step of detecting and judging the S100 pulse waveform, the steps include:

s110, controlling a decompression part to decompress in the decompression process of blood pressure measurement;

s120, acquiring a plurality of target pressure sequences and pulse amplitude signal sequences corresponding to the target pressures;

s130, calculating a pulse interval sequence;

s140, calculating an average value of pulse interval sequences, and setting upper and lower limit thresholds;

s150, defining a pulse interval sequence with the average value exceeding an upper limit threshold and a lower limit threshold as irregular pulses, and judging whether the irregular pulse number is larger than the irregular pulse threshold;

s160, if not, atrial fibrillation is avoided, and if so, judging the interval number of the pulse interval sequence;

and S165, if the number of intervals of the pulse interval sequence is larger than the pulse number threshold, directly performing the step S200, and if the number of intervals of the pulse interval sequence is smaller than the pulse number threshold, keeping the current pressure to continue pulse detection until the number of intervals of the pulse interval sequence is larger than the pulse number threshold, and then performing the step S200.

Through the implementation of the step, the judgment of the existence of atrial fibrillation is carried out by acquiring a pulse interval sequence with enough and correct quantity, so that enough data can be acquired to carry out atrial fibrillation judgment in the decompression process of single blood pressure measurement, users do not need to go through the compression and decompression processes of carrying out blood pressure measurement for many times, discomfort of the users is avoided, and the atrial fibrillation judgment time is reduced.

3. In the first aspect of the above technical solution, in the step of detecting and judging the S100 pulse waveform, the steps include:

s120, acquiring a plurality of target pressure sequences and pulse amplitude signal sequences Ai and i corresponding to the target pressures, wherein i is a positive integer from 1 to n, and represents the positions of the waveform sequences on a time axis;

s130, calculating a pulse interval sequence delta Ai, and calculating pulse interval sequences delta Ai= (Ai+1) - (Ai) from 1 to n-1;

s140, calculating an average value Sa of the pulse interval sequence, and setting interval upper and lower limit thresholds, wherein the interval lower limit threshold sk1=k1×sa, k1 is 0.5-0.9, and the interval upper limit threshold sk2=k2×sa, k2 is 1.1-1.5;

s150, performing upper and lower limit judgment on elements in the pulse interval sequence delta Ai, defining the pulse interval sequence with the average value exceeding the upper and lower limit thresholds of the interval as irregular pulses, recording the irregular pulse number N exceeding the upper and lower limit thresholds of the interval, taking the irregular pulse threshold NK to be more than or equal to 2, and judging whether the irregular pulse number N is larger than the irregular pulse threshold NK;

s160, if N is less than NK, the atrial fibrillation is not shown, if N is more than or equal to Nk, the atrial fibrillation is possibly generated, and the number of intervals of the pulse interval sequence is judged;

S165, if the number of intervals of the pulse interval sequence is greater than the pulse number threshold value Nf, wherein Nf is greater than or equal to 5, the step S200 is directly performed, and if the number of intervals of the pulse interval sequence is less than the pulse number threshold value Nf, the current pressure is kept to continue pulse detection until the number of intervals of the pulse interval sequence is greater than the pulse number threshold value Nf, and then the step S200 is performed.

By implementing the steps, the numerical setting is reasonable and scientific, and the steps and the application can acquire a sufficient and correct pulse interval sequence.

4. In the first aspect of the foregoing technical solution, in the step of determining the presence of atrial fibrillation in the S200 difference sequence, the method includes the steps of:

s210, calculating a pulse interval difference value sequence;

s220, calculating the average interval variation and the average interval of the pulse interval sequence;

s230, calculating the average variation of the pulse interval sequence and the overall variation of the pulse interval sequence;

s240, judging whether the average variation of the pulse interval sequence is larger than the average threshold value and the overall variation of the pulse interval sequence is larger than the overall threshold value or not according to the fact that the set pulse variation threshold value comprises the average threshold value and the overall threshold value;

if not, it is determined that atrial fibrillation does not exist, and if yes, it is determined that atrial fibrillation exists, and step S300 is performed.

Through implementation of the step, a pulse interval difference value sequence is calculated according to the acquired multiple pulse interval sequences, whether the variation of the pulse sequence is larger than a pulse variation threshold value is judged through the pulse interval difference value sequence, so that the accuracy and the referenceability of the acquired multiple pulse interval sequence data are further ensured, data guarantee can be provided for subsequent judgment, and misjudgment is avoided.

5. In the first aspect of the foregoing technical solution, in the step of determining the presence of atrial fibrillation in the S200 difference sequence, the method includes the steps of:

s210, calculating a pulse interval difference sequence Ri, wherein Ri= (delta Ai+1) - (delta Ai);

s220, calculating the average interval variation St through the pulse interval difference value sequence Ri,wherein n is the number of pulse interval difference sequences Ri; calculating an average interval Sr by a pulse interval difference sequence Ri>

S230, calculating an average variation Δs of the pulse interval sequence, Δs=st/Sr; the overall variation deltad of the pulse interval sequence is calculated,

s240, the set pulse change threshold comprises an average threshold value delta Sk and an overall threshold value delta Dk, and whether the average change quantity delta S is larger than the average threshold value delta Sk or not is judged, and the overall change quantity delta D is larger than the overall threshold value delta Dk, wherein the delta Sk and the delta Dk are all numbers larger than 0;

If Δs > Δsk and Δd > Δdk cannot be satisfied at the same time, it is determined that atrial fibrillation is not present, and if Δs > Δsk and Δd > Δdk are satisfied at the same time, it is determined that atrial fibrillation is present, and the process proceeds to step S300.

Through implementation of the step, application setting of algorithms and parameters is reasonable and scientific, wherein the steps and the applications can provide data guarantee for subsequent judgment.

6. In the first aspect of the above technical solution, in the step of determining the presence of atrial fibrillation in the S300 small sequence, the steps include:

s310, uniformly distributing the pulse interval difference value sequences into a plurality of small sequences;

s320, calculating the average variation of each small sequence and the overall variation of each small sequence respectively;

s330, judging whether the average variation of the small sequence is larger than an average threshold value or not and the overall variation of the small sequence is larger than an overall threshold value or not;

s340, if the average variation of the small sequence is larger than the average threshold value and the overall variation of the small sequence is larger than the overall threshold value, counting the sequence result of the small sequence, and if not, not counting;

s350, calculating a sequence result and a value;

s360, judging whether the sequence result sum value is larger than a result set value;

and S370, judging whether atrial fibrillation exists if the sequence result sum is larger than the result set value, and judging whether atrial fibrillation exists if the sequence result sum is smaller than the result set value.

By implementing the step, the aim of judging the existence of atrial fibrillation by using the data acquired in the decompression process of single blood pressure measurement is further achieved, and the process judges the digital information presented in the pulse amplitude signal sequence corresponding to the atrial fibrillation more precisely and finely, so that the misjudgment of the atrial fibrillation is further avoided.

7. In the first aspect of the above technical solution, in the step of determining the presence of atrial fibrillation in the S300 small sequence, the steps include:

s310, evenly distributing the pulse interval difference value sequences into m small sequences;

s320, calculating the average change quantity delta Sj of each small sequence and the integral change quantity delta Dj of each small sequence respectively, wherein the value of j is from 1 to m;

s330, judging whether the average variation delta Sj of the small sequence is larger than an average threshold delta Sk and the overall variation delta Dj of the small sequence is larger than an overall threshold delta Dk;

s340, if the average variation delta Sj of the small sequence is larger than the average threshold delta Sk and the overall variation delta Dj of the small sequence is larger than the overall threshold delta Dk, counting the sequence result of the small sequence as 1, and if not, not counting;

s350, calculating a sequence result and a value;

S360, judging whether the sequence result sum value is larger than a result set value C, wherein the value of C is from 1 to m;

Through implementation of the step, the numerical value setting is reasonable and scientific, the pulse interval sequence obtained by single blood pressure measurement can be used for judging, and misjudgment can be avoided.

Due to the application of the scheme, compared with the prior art, the invention has the following advantages and effects:

1. by implementing the technical scheme of the invention, the method and the device solve the problems of poor user experience and long measurement time caused by the fact that a plurality of independent sequences are needed to be acquired through a plurality of pressurized measurement modes to determine the existence of atrial fibrillation in the prior art, and provide a scheme for further judging the existence of atrial fibrillation according to pulse interval sequences acquired in a single blood pressure measurement process during blood pressure measurement.

2. According to the implementation of the technical scheme, in order to acquire the pulse interval sequence with sufficient and correct quantity, the pulse amplitude signal sequence is acquired in the decompression process of blood pressure measurement, the pulse interval sequence is calculated, the quantity of irregular pulse waves exceeding the threshold in the blood pressure measurement process is enough by judging whether the quantity of the irregular pulse waves in the pulse interval sequence is larger than the threshold value of the irregular pulse waves, the judgment of whether the quantity of the pulse waves is enough to perform atrial fibrillation is further judged, and the decompression part is controlled to keep the current pressure to continuously detect under the condition that the quantity of the pulse waves is insufficient until the quantity of the pulse waves is enough to enable enough data to be acquired in the decompression process of single blood pressure measurement to perform atrial fibrillation judgment, users do not need to go through the pressurization and decompression process of carrying out blood pressure measurement for many times, discomfort of the users is avoided, and the atrial fibrillation judgment duration is reduced.

3. Through implementation of the technical scheme, in the step of judging the existence of atrial fibrillation by the difference sequence, the pulse interval difference sequence is calculated according to the acquired multiple pulse interval sequences, and whether the variation of the pulse sequence is larger than the pulse variation threshold value is judged by the pulse interval difference sequence, so that the accuracy and the referenceability of the acquired multiple pulse interval sequence data are further ensured, and the data guarantee can be provided for subsequent judgment, so that the occurrence of erroneous judgment is avoided.

4. Through implementation of the technical scheme of the invention, in the step of judging the existence of atrial fibrillation by using the small sequences, the pulse interval difference value sequences are evenly distributed into a plurality of small sequences, and then each small sequence is judged and counted, so that the aim of judging the existence of atrial fibrillation by using the data acquired in the decompression process of single blood pressure measurement is further fulfilled, and the process judges the digital information presented in the pulse amplitude signal sequence corresponding to the atrial fibrillation more precisely and finely, so as to further avoid misjudgment of the atrial fibrillation.

5. In summary, by using the method and the device for determining the existence of atrial fibrillation in the blood pressure measurement, enough pulse interval sequence data can be obtained in the decompression process of single blood pressure measurement to perform difference sequence determination of the existence of atrial fibrillation, and small sequence determination of the existence of atrial fibrillation, multiple measurements are not needed, and the accuracy and the referenceability of the obtained pulse interval sequence data can be ensured, so that data guarantee is provided for the determination result of atrial fibrillation, and erroneous determination is avoided.

Drawings

FIG. 1 is a perspective view showing an appearance of a blood pressure measuring device according to an embodiment of the present invention;

FIG. 2 is a block diagram showing a blood pressure measuring apparatus according to an embodiment of the present invention;

FIG. 3 is a flow chart of pulse waveform detection and judgment according to an embodiment of the present invention;

FIG. 4 is a flow chart of a difference sequence for determining the presence of atrial fibrillation in accordance with an embodiment of the present invention;

FIG. 5 is a flow chart of a small sequence of determining the presence of atrial fibrillation in accordance with an embodiment of the present invention;

fig. 6 is a schematic diagram of a measurement process feature point.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. Singular forms such as "a," "an," "the," and "the" are intended to include the plural forms as well, as used herein.

The terms "first," "second," and the like, as used herein, do not denote a particular order or sequence, nor are they intended to be limiting, but rather are merely used to distinguish one element or operation from another in the same technical term.

As used herein, "connected" or "positioned" may refer to two or more components or devices in physical contact with each other, or indirectly, or in operation or action with each other.

As used herein, the terms "comprising," "including," "having," and the like are intended to be open-ended terms, meaning including, but not limited to.

The term (terms) as used herein generally has the ordinary meaning of each term as used in this field, in this disclosure, and in the special context, unless otherwise noted. Certain terms used to describe the present disclosure are discussed below, or elsewhere in this specification, to provide additional guidance to those skilled in the art in connection with the description herein.

The invention aims to provide a scheme for further judging the existence of atrial fibrillation according to a pulse interval sequence acquired in a single blood pressure measurement process in order to solve the problem that a plurality of independent ways for determining the existence of atrial fibrillation are required to be acquired through a plurality of pressurization measurement modes, so that the user experience is poor.

An embodiment of the present invention provides a method for controlling pressure and relief of blood pressure measurement, for determining whether atrial fibrillation exists during blood pressure measurement, the method comprising:

The step of detecting and judging the S100 pulse waveform includes the following steps:

s130, calculating a pulse interval sequence;

The step of determining the presence of atrial fibrillation in the difference sequence at S200 includes the steps of:

s210, calculating a pulse interval difference value sequence;

The step of determining the presence of atrial fibrillation in the small sequence S300 includes the steps of:

s350, calculating a sequence result and a value;

Through implementation of the first embodiment of the present invention, a solution is provided for further judging the existence of atrial fibrillation according to a pulse interval sequence acquired in a single blood pressure measurement process during blood pressure measurement, aiming at the problems of poor user experience and long measurement time caused by the need of acquiring a plurality of independent sequences to determine the existence of atrial fibrillation by a plurality of pressurization measurement methods in the prior art. In step S100 of the scheme, in order to obtain a pulse interval sequence with sufficient and correct number, a pulse amplitude signal sequence is obtained in a decompression process of blood pressure measurement, a pulse interval sequence is calculated, and by judging whether the irregular pulse number in the pulse interval sequence is greater than an irregular pulse threshold value, the number of irregular pulse waves exceeding the threshold value in the blood pressure measurement process is sufficient, and further judging whether the number of pulse waves is sufficient to judge that atrial fibrillation exists, and under the condition that the number of pulse waves is insufficient, controlling the decompression part to keep the current pressure to continue detection until the number of pulse waves is detected, so that sufficient data can be obtained in the decompression process of single blood pressure measurement to judge atrial fibrillation, users do not need to go through the compression and decompression processes of blood pressure measurement for many times, discomfort of the users is avoided, and atrial fibrillation judging time is reduced; in step S200 of the scheme, in the step of judging the existence of atrial fibrillation in the difference sequence, calculating a pulse interval difference sequence according to the acquired multiple pulse interval sequences, judging whether the variation of the pulse sequence is greater than a pulse variation threshold value or not through the pulse interval difference sequence, thereby further guaranteeing the accuracy and referenceability of the acquired multiple pulse interval sequence data, further providing data guarantee for subsequent judgment and avoiding the occurrence of erroneous judgment; in step S300 of this embodiment, in the step of determining the presence of atrial fibrillation in the small sequences, the pulse interval difference sequences are further equally distributed into a plurality of small sequences, and then each small sequence is determined and counted, so that the purpose of determining the presence of atrial fibrillation by using the data obtained in the decompression process of the single blood pressure measurement is further achieved, and the process determines the "digital information" presented in the pulse amplitude signal sequence corresponding to atrial fibrillation more precisely and finely, so as to further avoid erroneous determination of atrial fibrillation.

A further description of one preferred embodiment of the present invention will be provided below.

The method for determining the presence of atrial fibrillation by blood pressure measurement according to the preferred embodiment includes the following steps.

S100, pulse waveform detection and judgment, wherein in the pressure reduction process of blood pressure measurement, a plurality of target pressure sequences and pulse amplitude signal sequences corresponding to the target pressure are obtained, pulse interval sequences are calculated, whether the irregular pulse number in the pulse interval sequences is larger than an irregular pulse threshold value is judged, if not, no atrial fibrillation exists, if yes, a sufficient number of pulse interval sequences are continuously obtained in the single pressure reduction process, and step S200 is carried out; comprises the following steps:

S200, judging that atrial fibrillation exists according to the difference value sequences, calculating pulse interval difference value sequences according to the acquired pulse interval sequences, judging whether the variation of the pulse sequences is larger than a pulse variation threshold value or not according to the pulse interval difference value sequences, if not, judging that the atrial fibrillation does not exist, and if so, judging that the atrial fibrillation exists and performing step S300; comprises the following steps:

S300, judging that atrial fibrillation exists by small sequences, evenly distributing pulse interval difference value sequences into a plurality of small sequences, respectively calculating and judging whether the variation of each small sequence is larger than a pulse variation threshold value, counting the small sequences larger than the pulse variation threshold value and obtaining sequence results and values, judging that atrial fibrillation exists when the sequence results and values are larger than the result set values, and otherwise, judging that atrial fibrillation does not exist. Comprises the following steps:

s350, calculating a sequence result and a value;

In a second embodiment, as shown in fig. 1 and fig. 2, a blood pressure measuring device is provided in the second embodiment of the present invention, and the blood pressure measuring device is used for measuring blood pressure and judging atrial fibrillation in the method in the first embodiment of the present invention, where the device includes a main control unit, a display unit, a pressurizing unit, a depressurizing unit, a pressure pulse detecting unit and an atrial fibrillation judging unit;

In a third embodiment, the present invention further provides a readable storage medium, where a control program is stored in the readable storage medium, and when the control program is executed by a main control unit, the main control unit executes the steps of the method for controlling the pressure and the pressure of blood pressure measurement according to the first embodiment of the present invention.

The fourth embodiment of the present invention further provides a blood pressure measuring device for measuring blood pressure and judging whether atrial fibrillation exists during blood pressure measurement, where the blood pressure measuring device includes a main control unit, a pressurizing unit, a depressurizing unit, a pressure pulse detecting unit and an atrial fibrillation judging unit;

the main control unit is electrically connected with the pressure pulse detection unit, the atrial fibrillation judgment unit, the pressurizing part and the decompression part, and controls the pressurizing part to pressurize to a preset pressure, then the main control unit controls the decompression part to slowly decompress, and a sufficient number of pulse interval sequences are obtained in a single decompression process of slow decompression;

the method comprises the following steps:

The constitution and operation of the present invention will be described with reference to fig. 1 to 6.

As shown in fig. 1, the blood pressure measuring device according to one embodiment has a blood pressure measuring cuff wound around a measurement site of a subject and a blood pressure meter main body connected to the cuff. The blood pressure measuring device comprises a main control unit, a display unit, a pressurizing part, a depressurizing part, an atrial fibrillation judging unit and a pressure pulse detecting unit.

Fig. 2 shows a schematic configuration of the measuring device, which includes a main control unit, a display unit, a pressurizing unit, a depressurizing unit, a pressure pulse detecting unit, and an atrial fibrillation judging unit. The main control unit is electrically connected to the display unit, the pressure pulse detection unit, the pressurizing part and the depressurizing part, the main control unit controls the pressurizing part to pressurize to preset pressure, then the main control unit controls the depressurizing part to slowly depressurize, the pressure pulse detection unit obtains pulse wave signals corresponding to a plurality of target pressures in the slow depressurization process, whether the irregular pulse wave quantity exceeding a threshold value exists or not is judged according to the interval characteristics of the pulse wave signal sequence, if the irregular pulse wave quantity exceeding the threshold value exists, whether the pulse wave quantity is enough to judge that atrial fibrillation exists or not is further judged, if the pulse wave quantity is enough, the atrial fibrillation detection unit is combined with the pulse wave characteristics of the measurement process to judge whether atrial fibrillation exists or not, otherwise, the main control unit controls the depressurizing part to keep detecting continuously until the enough pulse wave quantity is detected, and finally the atrial fibrillation judgment unit is used for judging whether the atrial fibrillation exists or not.

The pressurizing part is used for controlling the cuff air bag to be pressurized, and the cuff air bag is pressurized to a preset pressure by being matched with the pressure pulse detecting unit.

The pressure pulse detection unit is used for detecting the pressure in the cuff air bag in the pressurization and depressurization process, acquiring pulse wave signals corresponding to a plurality of target pressure positions at the same time, and transmitting the pulse wave signals to the main control unit for operation and processing.

The atrial fibrillation judging unit judges that atrial fibrillation exists by using a pulse interval sequence with a sufficient number, and judges that atrial fibrillation exists by using a small sequence to finally judge whether atrial fibrillation exists.

The decompression part is used for slowly deflating the cuff air bag in the depressurization measuring process and rapidly deflating the cuff air bag at the end of the measuring process.

The display unit is used for displaying the blood pressure result calculated by the main control unit, the atrial fibrillation result judged by the atrial fibrillation judgment unit and the state information of the measurement process.

The working principle of the scheme of the invention is explained below:

in the process of controlling the decompression part to decompress, the pressure pulse detection unit acquires a plurality of sequences Ai of pulse amplitude signals corresponding to target pressure, i is a positive integer from 1 to N, represents the position of a waveform sequence on a time axis, calculates pulse interval sequences Δai= (ai+1) - (Ai) from 1 to N-1, calculates an average value Sa of the Δai sequences, takes Sk1=k1×Sa (Sk 1 is a judgment threshold value of a selected interval lower limit, k1 takes 0.5 to 0.9), takes Sk2=k2×Sa (Sk 2 is a judgment threshold value of a selected interval upper limit, k2 takes 1.1 to 1.5), judges the upper limit and lower limit of elements in the pulse interval sequences Δai, records the number N exceeding the upper limit and lower limit threshold value, further judges whether the number of the heart intervals reaches the threshold value of the judgment (Nf) if N is not less than Nk (Nk is an irregular number threshold value, the value of the value N is not less than 2), and continues to judge whether the number of the heart intervals is greater than 3 if the number of the heart pulses reaches the threshold value of the vibration, and the pulse value of the current pulse value of the pulse value is not less than 3, and the pulse value of the pulse value is kept to be greater than 3, and the pulse value of the current pulse value is detected, and the pulse value is continuously detected.

Further calculating pulse interval difference sequence ri= (Δai+1) - (Δai), and calculating average interval variation through Ri sequence(n is the number of Ri sequences) by ΔAi sequenceAverage interval amount->Average change in pulse sequence Δs=st/Sr, overall change in pulse sequence +.>Taking the threshold value DeltaSk of the average variation of the pulse sequence and the threshold value DeltaDk of the overall variation of the pulse sequence (DeltaSk, deltaDk are all numbers larger than 0), if DeltaS is satisfied at the same time>ΔSk，ΔD>ΔDk indicates the presence of atrial fibrillation. Fig. 4 shows a flowchart for determining the presence of atrial fibrillation, fig. 6 shows a description of characteristic points of the measurement process, fig. 6 shows that Nk is set to 3, nf is set to 38, 3 irregular pulses are detected, and if the number of intervals of the pulse interval sequence at the position of the current blood pressure measurement end point is 27 (a 28-1), the current pressure is maintained to continue pulse detection until the number of intervals of the pulse interval sequence is greater than 38 (a 39-1), and the blood pressure measurement is ended.

The pulse signal difference sequence is averagely distributed into m small sequences, the pulse average change rate delta Sj and the pulse overall change quantity delta Dj (the value of j is from 1 to m) of each small sequence are respectively calculated, if the small sequences simultaneously meet delta Sj > delta Sk and delta Dj > delta Dk, the result is marked as 1, otherwise, the result is marked as 0, if the sum value of the results of all the sequences is larger than C (the value of C is from 1 to m), the existence of atrial fibrillation is judged, and a flow chart for judging the existence of atrial fibrillation by the small sequences is shown in fig. 5.

By implementing the above embodiments, atrial fibrillation pre-judgment is performed in the blood pressure measurement process, and enough pulses are acquired after the blood pressure measurement is finished, so that atrial fibrillation judgment can be conveniently completed in a single measurement process, and discomfort caused by multiple pressurization is avoided; and carrying out small-sequence grouping on the pulse sequences, and comprehensively judging the existence of atrial fibrillation according to the judgment results of the small sequences. By the application of the method and the device for judging the existence of the atrial fibrillation through the blood pressure measurement, enough pulse interval sequence data can be acquired in the decompression process of single blood pressure measurement to judge the existence of the atrial fibrillation in a difference sequence mode, and the existence of the atrial fibrillation in a small sequence mode, so that multiple measurements are not needed, the accuracy and the referenceability of the acquired pulse interval sequence data can be ensured, data guarantee is provided for the judgment result of the atrial fibrillation, and erroneous judgment is avoided.

The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. A method for determining the presence of atrial fibrillation in a blood pressure measurement, the method comprising:

2. A method for judging the existence of atrial fibrillation by blood pressure measurement is characterized in that the method uses a blood pressure measuring device to measure blood pressure and judge whether atrial fibrillation exists during blood pressure measurement, and the blood pressure measuring device comprises a main control unit, a pressurizing part, a depressurizing part, a pressure pulse detecting unit and an atrial fibrillation judging unit;

the method comprises the following steps:

3. The method of determining the presence of atrial fibrillation according to claim 2, characterized in that the step of detecting and determining the pulse waveform of S100 comprises the steps of:

s130, calculating a pulse interval sequence;

4. The method of determining the presence of atrial fibrillation by blood pressure measurement according to claim 2, comprising: the step of detecting and judging the pulse waveform in S100 includes the steps of:

5. The method of determining the presence of atrial fibrillation by blood pressure measurement according to claim 2, comprising: the step of determining the presence of atrial fibrillation in the sequence of difference values S200 comprises the steps of:

s210, calculating a pulse interval difference value sequence;

6. The method according to claim 4, wherein the step of determining the presence of atrial fibrillation in the S200 difference sequence comprises the steps of:

s220, calculating the average interval variation St through the pulse interval difference value sequence Ri,wherein n is the number of pulse interval difference sequences Ri; calculating an average interval Sr by a pulse interval difference sequence Ri >

7. The method of determining the presence of atrial fibrillation by blood pressure measurement according to claim 2, comprising: the step of determining the presence of atrial fibrillation in the small sequence of S300 includes the steps of:

S350, calculating a sequence result and a value;

8. The method of determining the presence of atrial fibrillation by blood pressure measurement according to claim 6, comprising: the step of determining the presence of atrial fibrillation in the small sequence of S300 includes the steps of:

s350, calculating a sequence result and a value;

9. The blood pressure measuring device is characterized by comprising a main control unit, a display unit, a pressurizing part, a depressurizing part, a pressure pulse detecting unit and an atrial fibrillation judging unit; wherein,

10. A readable storage medium, characterized by: the readable storage medium has stored thereon a control program which, when executed by a master control unit, causes the master control unit to perform the steps of the method according to any one of claims 1 to 8.