CN111345791A

CN111345791A - Pulse wave measuring device

Info

Publication number: CN111345791A
Application number: CN201811583842.9A
Authority: CN
Inventors: 孙白雷; 韩飞; 谢春柳; 张飞
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2020-06-30
Anticipated expiration: 2038-12-24
Also published as: CN111345791B

Abstract

A pulse wave measuring device comprising: the device comprises a signal acquisition module, a data processing module and a display module; the signal acquisition module is used for acquiring the pulse wave of at least one arterial pulsation point of the target object; the data processing module is used for extracting at least one pulse waveform feature of the pulse wave, wherein the pulse waveform feature comprises a time domain feature and/or a frequency domain feature; and the display module is used for displaying the characteristic value of the pulse waveform characteristic. Compared with the traditional scheme of only displaying the pulse wave waveform and depending on the subjective judgment of the user on the information represented by the pulse wave, the data processing module extracts the time domain characteristics and/or the frequency domain characteristics of the pulse wave and displays the characteristic value of the pulse wave characteristics, so that the user can intuitively know the information represented by the pulse of the target object, and an effective basis is provided for the following medical diagnosis, health screening and the like.

Description

Pulse wave measuring device

Technical Field

The embodiment of the invention relates to the technical field of medical electronics, in particular to a pulse wave measuring device.

Background

Congenital Heart Disease (CHD) is the most common congenital abnormality. It has been shown that CHD, whether a cardiac abnormality or an indirect lethal factor, is the most common cause of death due to congenital abnormalities and is also the leading cause of infantile death in developed countries. Especially, children with Critical congenital heart disease CCHD (CCHD) require early diagnosis and surgical intervention or cardiac catheter treatment in the first year of life to survive.

To effectively ameliorate this problem, most infants are screened for CCHD. The CCHD screening significance lies in realizing the early identification and early treatment of CCHD and assisting in improving the outcome. Based on that most of CCHD is accompanied by different degrees of hypoxia, the CCHD is screened by using a pulse oxygen saturation measurement (POX) method, the method has high specificity, but the CCHD screening is carried out by adopting the value of the oxygen saturation in a single dimension, the sensitivity is low, and the method means that part of CCHD patients can be missed to be detected. Therefore, how to provide better technical assistance for CCHD screening by means of the existing scientific and technical development is still of great interest.

Disclosure of Invention

The embodiment of the invention provides a pulse wave measuring device, which can intuitively provide pulse wave characteristic values for a user to check compared with the existing pulse wave measuring device, and particularly can solve the technical problem that CCHD screening is carried out by adopting a value of blood oxygen saturation as a basis in a single dimension way in the prior art when the pulse wave measuring device is applied to auxiliary CCHD screening, and provide more physiological data as diagnosis basic data for CCHD screening.

In a first aspect, an embodiment of the present invention provides a pulse wave measurement apparatus, including: the device comprises a signal acquisition module, a data processing module and a display module; wherein the content of the first and second substances,

the signal acquisition module is used for acquiring the pulse wave of at least one arterial pulsation point of the target object;

the data processing module is used for extracting at least one pulse waveform feature of the pulse wave, wherein the pulse waveform feature comprises a time domain feature and/or a frequency domain feature;

and the display module is used for displaying the characteristic value of the pulse waveform characteristic.

Further, the data processing module is further used for determining a cardiac function parameter of the target object according to the characteristic value of the pulse waveform characteristic;

the display module is further used for displaying the cardiac function parameters.

Optionally, the signal acquiring module is configured to acquire pulse waves of at least two arterial pulsation points of the target subject;

and the data processing module is used for respectively extracting at least one pulse waveform characteristic of each pulse wave and determining the heart function parameter of the target object according to the difference between the characteristic values of the pulse waveform characteristics corresponding to each pulse wave.

Optionally, the data processing module is further configured to acquire heart sound data of the target object when the cardiac function parameter does not satisfy a preset condition;

and the display module is used for displaying the heart sound data.

Optionally, the data processing module is further configured to acquire an echocardiogram of the target object when the cardiac function parameter does not satisfy a preset condition;

the display module is used for displaying the echocardiogram.

Further, the data processing module is further configured to extract an image feature corresponding to the cardiac function parameter that does not satisfy the preset condition in the echocardiogram, and label the image feature;

the display module is further used for displaying the image characteristics.

Optionally, the pulse waveform characteristics include at least one of pulse waveform area, pulse wave curve slope, pulse wave interval, pulse wave amplitude, periodic variation of pulse amplitude, pulse wave transit time, and characteristics calculated from a combination of the above characteristics.

Optionally, the data processing module is specifically configured to perform at least one of the following operations:

calculating the pulse waveform area of the pulse wave;

calculating the slope of a pulse wave curve of the pulse wave;

calculating a pulse wave interval of the pulse waves;

calculating a pulse wave amplitude value of the pulse wave;

calculating a variation index of perfusion or amplitude variation of the pulse wave within the pulse wave period

Calculating a pulse wave transmission time of the pulse wave;

and calculating the pulse waveform combination characteristics.

Further, the data processing module is further configured to perform at least one of the following operations:

determining the cardiac ejection volume of the target object according to the pulse waveform area;

determining the myocardial contractility of the target object according to the maximum rising slope of the pulse wave curve;

and determining the heart blood volume of the target object according to the variation index of the pulse wave amplitude variation.

Optionally, the signal acquisition module is further configured to acquire an electrocardiogram of the target object;

the data processing module is specifically used for determining the pulse wave transmission time according to the pulse wave and the electrocardiogram.

Optionally, the data processing module is further configured to determine an arterial blood pressure and/or a blood vessel state of the target subject according to the pulse wave transmission time;

the display module is further used for displaying the arterial blood pressure and/or the blood vessel state of the target object.

Optionally, the signal acquisition module is configured to acquire blood oxygen saturation levels of at least two body parts of the target subject;

the data processing module is also used for calculating the difference value between the blood oxygen saturation of at least two arterial pulsation points;

the display module is further configured to display each difference value, or display a maximum value of each difference value.

Optionally, the characteristic values include a state value, a variance value, and a difference value.

According to the technical scheme of the embodiment of the invention, the pulse wave of at least one arterial pulsation point of the target object is acquired through the signal acquisition module to obtain the waveform characteristics of the pulse wave, the time domain characteristics and/or the frequency domain characteristics of the pulse wave are extracted through the data processing module, and the characteristic value of the pulse waveform characteristics is displayed through the display module. Compared with the traditional scheme that the pulse wave waveform is only displayed for the user to refer to and the information represented by the pulse wave is judged by the user subjectively, the data processing module further extracts the time domain characteristics and/or the frequency domain characteristics of the pulse wave to generate objective data, and displays the characteristic value of the pulse wave characteristics in the display module, so that the user can visually, conveniently and pertinently know the information represented by the pulse of the target object, and effective basis is provided for the following medical diagnosis, health screening and the like.

Drawings

In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, a brief description is given below of the drawings used in describing the embodiments. It should be clear that the described figures are only views of some of the embodiments of the invention to be described, not all, and that for a person skilled in the art, other figures can be derived from these figures without inventive effort.

Fig. 1 is a schematic structural diagram of a pulse measurement device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a pulse wave according to an embodiment of the present application;

FIG. 3 is a diagram illustrating a pulse wave time domain feature of a pulse wave according to an embodiment of the present application;

fig. 4a is a frequency diagram of a frequency spectrum diagram of two optical signals of a pulse wave according to an embodiment of the present application;

FIG. 4b is a graph showing the spectral area of the spectral graph of the two optical signals of the pulse wave in FIG. 4 a;

FIG. 5 is a schematic diagram of waveforms of an electrocardiogram and a pulse wave according to an embodiment of the present application;

FIG. 6 is a schematic illustration of a display of an integrated feature provided in an embodiment of the present application.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Fig. 1 is a schematic structural diagram of a pulse wave measurement device according to an embodiment of the present application. As shown in fig. 1, the apparatus includes: a signal acquisition module 110, a data processing module 120 and a display module 130; the signal acquisition module 110 is configured to acquire a pulse wave of at least one arterial pulsation point of the target object; a data processing module 120 for extracting at least one pulse waveform feature of the pulse wave; and the display module 30 is used for displaying the characteristic value of the pulse waveform characteristic. Wherein the pulse waveform features include time domain features and/or frequency domain features, that is, the data processing module 120 may only extract the time domain features or the frequency domain features of the pulse waveform features; or extracting the time domain characteristics of the pulse waveform characteristics and the frequency domain characteristics of the pulse waveform characteristics.

The target object may include all living beings having pulse signals, such as human beings, animals, etc.

Illustratively, the signal acquisition module 110 includes a pulse sensor for acquiring a pulse wave signal, such as a piezoelectric pulse sensor, a piezoresistive pulse sensor, a photoelectric pulse sensor, and the like.

The signal collecting module 110 can be used to collect pulse waves of one, two or more arterial pulsation points of the target object. Alternatively, the arterial fluctuation points may include radial, subclavian, common carotid, facial, superficial temporal, brachial, femoral, dorsalis pedis, and the like.

Fig. 2 is a schematic diagram of a pulse wave according to an embodiment of the present application. For example, as shown in fig. 2, the pulse wave of the arterial pulsation point of at least one of the right finger, the right foot, the left finger (not shown), the left foot (not shown), and the earlobe (not shown) may be acquired based on the signal acquisition module.

Optionally, before extracting at least one pulse waveform feature of the pulse wave, the data processing module 120 may further be configured to perform preprocessing on the pulse wave, and remove noise and the like of the pulse wave based on a filtering algorithm, for example, high-frequency noise and/or low-frequency noise and the like of the pulse wave signal may be filtered, and further perform smooth filtering on the filtered pulse wave signal and the like.

It should be noted that the temporal features of the pulse waveform features may include, but are not limited to, single features such as pulse waveform area, pulse wave curve slope, pulse wave interval, pulse wave amplitude, perfusion or amplitude variation within a pulse wave period, pulse wave transmission time, and a combination feature calculated by combining at least two of the above features. The frequency domain features of the pulse waveform features may include, but are not limited to, spectral characteristics of the pulse wave, and the like.

Fig. 3 is a schematic diagram of a pulse wave temporal domain feature of a pulse wave according to an embodiment of the present application, and as shown in fig. 3, the temporal domain feature of the pulse wave feature may include a dominant wave amplitude H1, a central isthmus amplitude H2, a rapid ejection period, a systolic period T2, a diastolic period T3, a systolic area S1, a diastolic area S2, a rising branch slope r, and the like. Fig. 4a is a frequency diagram of a spectrogram of two optical signals of a pulse wave according to an embodiment of the present application, and fig. 4b is a spectral area diagram of the spectrogram of the two optical signals of the pulse wave in fig. 4 a. The frequency domain characteristics can be calculated by using the frequency spectrum peak frequency and the corresponding area of the frequency spectrum peak, as shown in fig. 4a, the frequency spectrum peak frequency includes f _1 and f _ 2; as shown in fig. 4b, the area a corresponding to the spectral peak includes a red light spectrum area a _ r and an infrared spectrum area a _ ir, i.e., the frequency domain characteristics can be calculated according to the area difference and ratio under the two wavelengths.

Optionally, the pulse waveform characteristics include pulse waveform singles, which may include at least one of pulse waveform area, pulse wave curve slope, pulse wave interval, pulse wave amplitude, perfusion or amplitude variation within a pulse wave period, and pulse wave transit time.

The pulse waveform area may include a systolic area, a diastolic area, and/or a whole pulse wave area. The pulse wave curve may optionally include an ascending branch slope and/or a descending branch slope, etc. The pulse wave interval may be, for example, a systolic interval, a diastolic interval, or a pulse wave ensemble interval, etc. The perfusion or amplitude variation within the pulse wave period may be a perfusion or amplitude variation within a respiratory period. The pulse waveform amplitudes may include, for example, systolic amplitude, diastolic amplitude, and dicrotic amplitude, among others.

In addition, in order to comprehensively consider information which can be characterized by pulse waveforms, the pulse waveform characteristics can also comprise pulse waveform combination characteristics, wherein the pulse waveform combination characteristics can be combination characteristics which are obtained by combining at least two pulse waveform single characteristics and then calculating.

Optionally, the data processing module is specifically configured to perform at least one of the following operations: calculating the pulse waveform area of the pulse wave; calculating the slope of the curve of the pulse wave; calculating a pulse wave amplitude of the pulse wave; calculating a variability index of perfusion or amplitude variability within the pulse wave period; identifying and labeling pulse wave intervals of the pulse waves; calculating a pulse wave transmission time of the pulse wave.

Specifically, the pulse wave transmission time of the pulse wave is calculated by synchronously acquiring the electrocardiographic signal and the pulse wave signal, taking an R-wave peak point of the electrocardiographic signal as a starting point of the pulse wave transmission time, and taking a maximum point of the pulse wave signal as an ending point of the pulse wave transmission time.

Considering that different pulse wave characteristics reflect one or more different physiological information and the individual requirements of the user, optionally, the data processing device may be further configured to receive an edit instruction input by the user, and determine the currently displayed pulse wave waveform characteristics according to the edit instruction of the user.

It is understood that the display module 130 can be used to display the quantified feature value for measuring the pulse waveform feature, and can also be used to display the graphical identifier and the parameter label marked on the pulse wave waveform to characterize the pulse waveform feature. The display module 130 can be used for displaying one pulse waveform, and can also be used for simultaneously displaying two or more pulse waveform.

When the display module 130 is used to display two or more pulse waveforms simultaneously, the characteristic value of one pulse waveform may be displayed, or the characteristic values of two or more pulse waveforms may be displayed simultaneously. For example, the pulse wave of the characteristic value of the pulse waveform to be displayed may be determined according to the selection operation of the user, and the characteristic value of the pulse waveform may be displayed according to the processing result of the data processing module 120.

Optionally, the characteristic values include a state value, a variance value, and a difference value. The state value can be understood as a value corresponding to a certain point in a certain pulse wave at a certain time point; the variation value can be understood as the variation value between different time points in the same pulse wave; the difference value can be understood as the difference between the corresponding values of the pulse waves at different points at the same time.

The heart is an engine on which all life activities of the human body depend, and is a basic guarantee for orderly and orderly physiological activities. Pulse waves are physiological signals generated by the propagation of heart pulses along arterial blood vessels and blood flow to the periphery. In view of the close correlation between the pulse wave and the heart function, the waveform characteristics of the pulse wave can be extracted and displayed as a reference index for evaluating the heart function to assist the heart function evaluation. Optionally, the data processing module may be further configured to determine a cardiac function parameter of the target subject according to the feature value of the pulse waveform feature; the display module is further used for displaying the cardiac function parameters. The cardiac function parameter may be a parameter representing cardiac function corresponding to the waveform characteristic of the pulse wave, such as cardiac contractility, cardiac ejection volume, cardiac blood volume, and the like.

It should be noted that the cardiac function parameters may include parameter identifiers expressed in the form of characters, letters, icons, and the like, so that a corresponding relationship may be established between each pulse waveform characteristic and the cardiac function, which is convenient for a user to refer to; parameter data such as values or variation ranges estimated through the waveform characteristics of the pulse waves can also be included, and more directly related parameter data are provided for the user. Of course a combination of parameter identification and reference data is also possible. Because there is often individual difference between different target objects, it is possible that the pulse waves at the same position are different. This may also lead to situations where pulse wave characteristics relying only on one arterial pulse point cannot be used as a strong reference for cardiac function assessment.

Optionally, the signal acquiring module is configured to acquire pulse waves of at least two arterial pulsation points of the target subject; and the data processing module is used for respectively extracting at least one pulse waveform characteristic of each pulse wave and determining the heart function parameter of the target object according to the difference between the characteristic values of the pulse waveform characteristics corresponding to each pulse wave. That is, the pulse waves of at least two arterial pulsation points can be compared, the heart function parameter of the target object can be determined by comparing the difference between the characteristic values of the same pulse waveform characteristic of different pulse waves of the same target object, and richer data can be provided as a reference by virtue of the correlation of physiological signals. The cardiac function parameters also include heart sounds. Heart sounds refer to sounds produced by vibrations caused by contraction of the heart muscle, closure of the heart valves, and impact of blood against the walls of the heart chambers, the walls of the aorta, etc. The heart sound stethoscope listens at a certain position of the chest wall, and instruments such as a transducer and the like can be used for recording the mechanical vibration of the heart sound to generate a heart sound picture. Heart sound data may also be added as an aid in assessing heart function. Optionally, the data processing module is further configured to acquire heart sound data of the target object when the cardiac function parameter does not satisfy a preset condition; and the display module is used for displaying the heart sound data.

Cardiac ultrasound, which utilizes the special physical properties of ultrasound to examine the anatomical and functional status of the heart and large blood vessels, is the first non-invasive technique. Echocardiography is often used as an aid in the diagnosis of heart disease. However, because most maternal and child care homes are not equipped with specialized cardiac ultrasound equipment and operators, and because cardiac ultrasound screening is expensive and labor intensive, cardiac ultrasound is often not suitable as a general screening tool. More importantly, if the cardiac ultrasound detection is used for the cardiac problems which are easy to heal naturally, the cardiac ultrasound detection not only has no clinical significance, but also can increase the economic and psychological burden of family members.

In this application, optionally, the data processing module is further configured to acquire an echocardiogram of the target object when the cardiac function parameter does not satisfy a preset condition; the display module is used for displaying the echocardiogram. When the basic screening means is used for determining that the cardiac function parameter does not meet the preset condition, namely health hidden dangers exist, the echocardiogram of the target object is obtained, and richer cardiac physiological information is obtained so as to be screened further.

The preset condition of the cardiac function parameter may be a normal range or an abnormal range of each cardiac function parameter counted based on the collected big data, and then the preset condition is determined according to the normal range or the abnormal range of each cardiac function parameter. Illustratively, an echocardiogram of the target subject is acquired if at least one of the cardiac function parameters is within the abnormal range or outside of a normal range. Of course, the preset condition of the cardiac function parameter may be set by a professional such as a doctor according to an empirical value.

Considering that echocardiograms generally show the heart more comprehensively, the user's attention is often only a part of it or some aspect. On this basis, optionally, the data processing module is further configured to extract an image feature corresponding to the cardiac function parameter that does not satisfy the preset condition in the echocardiogram, and label the image feature; the display module is further used for displaying the image characteristics.

Wherein the image features may include at least one of color features, texture features, shape features, and spatial relationship features.

Exemplarily, the data processing module may determine, according to prior data of cardiac tissue, a target region corresponding to the cardiac function parameter that does not satisfy the preset condition in the currently acquired echocardiogram, and mark the target region; furthermore, the target area is displayed through the display module, so that key information can be intuitively and effectively provided, and a user can check the key information in a targeted manner.

When the pulse wave is used as the basis for evaluating the cardiac function, the data processing module is further operable to perform at least one of the following operations: determining the cardiac ejection volume of the target object according to the pulse waveform area; determining the myocardial contractility of the target object according to the maximum rising slope in the slopes of the pulse wave curve; and determining the heart blood volume of the target object according to the variation index of the pulse wave amplitude variation. It can be understood that, since the living individuals have differences, the data processing module may convert the pulse wave characteristics into the cardiac function parameters according to the pulse wave characteristics and a preset data conversion rule, where the data conversion rule is established based on a physiological association relationship between the pulse wave characteristics and the cardiac function parameters.

It should be noted that the cardiac function parameters such as the cardiac ejection volume, the myocardial contractility, and the cardiac blood volume may be represented by a specific numerical value, a data range, an industry standard, and the like, and are not limited herein.

The heart is a three-dimensional structure, and in order to reflect the electrical activity of different surfaces of the heart, electrodes can be placed at different parts of a human body to record and reflect the electrical activity of the heart. Optionally, the signal acquisition module is further configured to acquire an electrocardiogram of the target object; the data processing module is specifically used for determining the pulse wave transmission time according to the pulse wave and the electrocardiogram. An electrocardiogram may be used, among other things, to record the changes in electrical activity produced by the heart each cardiac cycle.

Fig. 5 is a schematic diagram of waveforms of an electrocardiogram and a Pulse Wave according to an embodiment of the present application, and as shown in fig. 5, a Pulse Wave Transmission Time (PWTT) may be a time difference between a start point of an R-Wave peak in the electrocardiogram and a start point of the Pulse Wave.

FIG. 6 is a schematic illustration of a display of an integrated feature provided in an embodiment of the present application. The data processing module can be further used for generating comprehensive characteristics according to various characteristics of electrocardiograms and pulse waves; the display module is used for displaying the comprehensive characteristics. Wherein the comprehensive characteristics can be displayed in the form of a spider-web diagram. As shown in FIG. 6, each index has a corresponding axis and a corresponding value, 1 is a ratio of the value to be normal, and the other values are a ratio corresponding to normal values, so that the drawn spider-web graph can contain electrocardio-and pulse wave characteristics, and the differences of all points in the spider-web graph can be evaluated and show that the heart function is in a normal state or an abnormal state.

It is understood that the comprehensive characteristics of the physiological signals such as the electrocardiogram, the pulse wave and the blood oxygen saturation can be displayed simultaneously. For example, feature data representing the same tissue function can be displayed simultaneously in the same pattern diagram for comparison and comprehensive viewing. The pattern diagram is not limited to the spider-web diagram.

Optionally, the data processing module may be further configured to determine an arterial blood pressure and/or a blood vessel state of the target subject according to the pulse wave transmission time; the display module is further used for displaying the arterial blood pressure and/or the blood vessel state of the target object.

Illustratively, the vascular condition may be whether the functional parameter of the blood vessel is in a normal parameter range, or in an abnormal parameter range such as the occurrence of angiosclerosis, blood vessel occlusion, and other functional disorders.

Since there are many parameters for assisting in evaluating the blood vessel state, the display module may be configured to display various blood vessel function parameters of the blood vessel state within the abnormal parameter range for the convenience of the user to view.

Optionally, the data processing module may be further configured to generate a blood vessel status description according to each blood vessel function parameter and historical medical diagnosis data; the display module may be configured to display the vessel state description. Wherein, the description of the blood vessel state can be in the forms of words, pictures and/or animations.

The pulse oximetry signals are derived from the pulse waves generated by pumping blood in the heart cycle, so that the heart function condition can be evaluated by extracting proper pulse waveform characteristics. Therefore, the application also provides a mode of combining the blood oxygen saturation and the pulse waveform characteristics to increase the data dimension on which the evaluation of the cardiac function depends, and the purpose of improving the accuracy of the cardiac function evaluation is achieved by providing richer data.

Optionally, the signal acquisition module is configured to acquire blood oxygen saturation levels of at least two body parts of the target subject; the data processing module is also used for calculating the difference value between the blood oxygen saturation of at least two arterial pulsation points; the display module is further configured to display each difference value, or display a maximum value of each difference value. The blood oxygen saturation of the same part of different collection objects is not as same as possible, and the collection of the blood oxygen saturation of one body part without other characteristics is difficult to be used as an effective basis of physiological functions. In the application, the signal acquisition module is used for acquiring the blood oxygen saturation levels of two or more body parts of the target object, and then combining the blood oxygen saturation levels corresponding to the respective parts based on the data processing module, so that an effective data analysis basis can be provided for heart function assessment (e.g. CCHD screening) and assessment of other physiological tissue functions.

Based on the pulse oximetry signal, the blood oxygen saturation obtained from the absorption difference of different hemoglobin under different spectra can only reflect the oxygen and condition of the heart pumping blood, and the comprehensive cardiac function assessment should also include dimensions such as the cardiac ejection volume, the myocardial contractility, the arterial blood pressure, and the afterload vascular resistance. In view of the convenience of blood oxygen saturation acquisition and data intuitiveness, another possible embodiment of the present application may be that the signal acquisition module is operable to acquire blood oxygen saturation of at least two body parts of the target subject before acquiring the pulse wave of at least one arterial pulsation point of the target subject. Further, the signal collecting module may be configured to collect a pulse wave of at least one arterial pulsation point of the target subject when a difference value between two blood oxygen saturation levels of the at least two arterial pulsation points satisfies a preset condition.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A pulse wave measuring device characterized by comprising: the device comprises a signal acquisition module, a data processing module and a display module; wherein the content of the first and second substances,

2. The pulse wave measurement device according to claim 1, characterized in that;

the data processing module is further used for determining the heart function parameter of the target object according to the characteristic value of the pulse waveform characteristic;

3. The pulse wave measurement device according to claim 2, characterized in that;

the signal acquisition module is used for acquiring pulse waves of at least two arterial pulsation points of the target object;

the data processing module is used for respectively extracting at least one pulse waveform characteristic of each pulse wave and determining the heart function parameter of the target object according to the difference between the characteristic values of the pulse waveform characteristics corresponding to each pulse wave.

4. The pulse wave measurement device according to claim 2, characterized in that;

the data processing module is further used for acquiring heart sound data of the target object when the heart function parameter does not meet a preset condition;

the display module is used for displaying the heart sound data.

5. The pulse wave measurement device according to claim 2, characterized in that;

the data processing module is further used for acquiring an echocardiogram of the target object when the heart function parameter does not meet a preset condition;

the display module is used for displaying the echocardiogram.

6. The pulse wave measurement device according to claim 5, characterized in that;

the data processing module is further configured to extract image features corresponding to the cardiac function parameters that do not meet the preset condition from the echocardiogram, and label the image features;

the display module is further used for displaying the image characteristics.

7. The pulse wave measurement device of claim 1, wherein the pulse wave characteristic comprises a pulse wave profile characteristic, wherein the pulse wave profile characteristic comprises at least one of a pulse wave profile area, a pulse wave curve slope, a pulse wave interval, a perfusion or amplitude variation within a pulse wave period, a pulse wave amplitude, a pulse wave transit time.

8. The pulse wave measurement device according to claim 7, wherein the pulse waveform characteristics further include a pulse waveform combination characteristic, wherein the pulse waveform combination characteristic includes a combination characteristic calculated by combining at least two pulse waveform singles.

9. The pulse wave measurement device according to claim 8, wherein the data processing module is specifically configured to perform at least one of the following operations:

calculating the pulse waveform area of the pulse wave;

calculating the slope of a pulse wave curve of the pulse wave;

calculating a pulse wave interval of the pulse waves;

calculating the pulse waveform amplitude of the pulse wave;

calculating a variability index of perfusion or amplitude variability of the pulse wave within the pulse wave period;

calculating a pulse wave transmission time of the pulse wave;

and calculating the pulse waveform combination characteristics.

10. The pulse wave measurement device of claim 9, wherein the data processing module is further configured to perform at least one of:

11. The pulse wave measurement device according to claim 7, characterized in that:

the signal acquisition module is further used for acquiring an electrocardiogram of the target object;

12. The pulse wave measurement device according to claim 11, characterized in that:

the data processing module is further used for determining the arterial blood pressure and/or the blood vessel state of the target object according to the pulse wave transmission time;

13. The pulse wave measurement device according to claim 1, characterized in that;

the signal acquisition module is used for acquiring the blood oxygen saturation of at least two body parts of the target object;

14. The pulse wave measurement device according to claim 1, wherein the characteristic values include a state value, a variance value, and a difference value.