CN110946569B - Multichannel body surface electrocardiosignal synchronous real-time acquisition system - Google Patents
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Abstract
The invention discloses a multichannel body surface electrocardiosignal synchronous real-time acquisition system, which comprises a 64-lead body surface electrocardiogram acquisition integrated box and an electrocardio-lead patch; the 64-lead body surface electrocardiogram acquisition integrated box is formed by connecting 8 10-channel dynamic electrocardiogram recording boxes in parallel, and acquires 64-channel body surface electrocardiograms synchronously and in real time. The invention adopts 64 multi-lead body surface electrode positions optimized by clinical data to fully and completely reflect body surface electrocardio activity information under the limited number of leads; the mature dynamic electrocardiogram acquisition box is adopted, the synchronous acquisition purpose is achieved in a parallel connection mode, the method is innovative, and more channels can be further expanded according to clinical requirements; can be used for analyzing various clinically common arrhythmia (such as ventricular premature beat origin point positioning), myocardial infarction (such as acute myocardial infarction part judgment), cardiomyopathy (such as hypertrophic cardiomyopathy and the like) and the like, and has higher clinical transformation prospect and clinical diagnosis application value.
Description
Technical Field
The invention belongs to the field of electrocardiosignal acquisition and analysis technology and equipment, and particularly relates to a multichannel body surface electrocardiosignal synchronous real-time acquisition system.
Background
The conventional 12-lead body surface electrocardiogram is a traditional clinical judgment means and has been used for analyzing and diagnosing arrhythmia for over 100 years, such as being used for positioning the origin of ventricular premature beat, the origin of atrial premature beat and the like. However, the conventional 12-lead electrocardiogram has inherent defects, such as nonstandard lead placement positions, graphic inaccuracy caused by heart transposition, thoracic cavity anatomy and individual heterogeneity of patients, low mapping accuracy and the like, and the conventional 12-lead electrocardiogram has low accuracy in arrhythmia diagnosis and the like due to limited lead number, has large heterogeneity among different judgers, and particularly cannot capture body surface information reflected on the back of a human body in time, such as specific change of the back body surface electrocardiogram during acute posterior wall and inferior wall myocardial infarction. Therefore, how to more accurately, comprehensively and effectively reflect and record the body surface electrocardiosignals by using the limited body surface electrocardio lead number is always a hotspot of the study and application of the electrocardio.
Therefore, in the beginning of the 19 th century, a body surface potential mapping technology based on the conventional 12-lead body surface electrocardiogram comes into play. The technology obviously extends the application range of the standard 12-lead electrocardiogram, adopts more body surface electrodes, has wide body surface distribution range and relatively fine analysis, can obtain more, finer and more comprehensive heart electrical activity change rules than the conventional electrocardiogram, and has stronger scientific research and clinical application values. However, no mature product is available in the market at present for synchronously and real-timely acquiring multichannel and multi-lead electrocardiogram information of body surfaces and analyzing various arrhythmia. Some clinical research provides a scheme that body surface flexible electrode strips are adopted, each strip comprises 8-10 electrodes which are different, and multi-channel body surface electrocardio information is acquired in a mode of a plurality of electrode strips, but the scheme has the defects that if the device is used for scientific research, each electrode block on the strip is not actually clinically verified for acquiring weak body surface electrocardio signals, and a satisfactory scheme is not obtained for the problems of effective contact between the electrode block on the strip and a human body, effective and accurate extraction of the electrocardio signals, treatment of larger noise and clutter interference and the like. While other researches adopt a vest type scheme, a plurality of electrode blocks are arranged in the vest to collect multichannel body surface electrocardiosignals, and the problems of the electrode contact and collection accuracy, the collection point difference during the collection of different individuals and the like also exist. Meanwhile, the scheme does not adopt a well-known and effective acquisition scheme based on a Wilson electrocardiogram lead system when the body surface electrocardiogram is acquired, so that the accuracy, effectiveness and clinical application value of acquiring and obtaining signals are limited.
Disclosure of Invention
The invention aims to provide a multichannel body surface electrocardiosignal synchronous real-time acquisition system aiming at the defects of the prior art.
The purpose of the invention is realized by the following technical scheme: a multi-channel body surface electrocardiosignal synchronous real-time acquisition system comprises a 64-lead body surface electrocardiogram acquisition integrated box and an electrocardio-lead patch; the electrocardio-lead patch is connected with a 64-lead body surface electrocardiogram acquisition integrated box formed by connecting 8 10-channel dynamic electrocardio recording boxes in parallel, and synchronously acquires 64-channel body surface electrocardiograms in real time.
Further, the synchronous real-time acquisition of 64-channel body surface electrocardiograms specifically comprises: marking 8 10-channel dynamic electrocardiogram acquisition boxes as No. 1-8 dynamic acquisition boxes respectively; each dynamic acquisition box acquires 10 channels of body surface electrocardiogram data, wherein 2 channels are marked as RA and RL reference leads and respectively fixed at the far end of the right upper limb and the near end of the right lower limb, and the remaining 8 channels are marked as 8 leads and used for acquiring a body surface electrocardiogram; the reference lead channels of the No. 1 dynamic acquisition box are RA1 and RL1, and the acquisition lead marks of the body surface electrocardiogram are L1-L8 which are respectively fixed at the positions of the marks 1-8; the reference lead channels of the No. 2 dynamic acquisition box are RA2 and RL2, and the acquisition lead marks of the body surface electrocardiogram are L9-L16 which are respectively fixed at the positions of the marks 9-16; the reference lead channels of the No. 3 dynamic acquisition box are RA3 and RL3, the acquisition lead marks of the body surface electrocardiogram are L17-L24, and the acquisition lead marks are respectively fixed at the positions of the marks 17-24; the reference lead channels of the No. 4 dynamic acquisition box are RA4 and RL4, and the acquisition lead marks of the body surface electrocardiogram are L25-L32 which are respectively fixed at the positions of the marks 25-32; the reference lead channels of the No. 5 dynamic acquisition box are RA5 and RL5, the acquisition lead marks of the body surface electrocardiogram are L33-L40, and the acquisition lead marks are respectively fixed at the positions of the marks 33-40; the reference lead channels of the No. 6 dynamic acquisition box are RA6 and RL6, and the acquisition lead marks of the body surface electrocardiogram are L41-L48 which are respectively fixed at the positions of the marks 41-48; the No. 7 dynamic acquisition box has reference lead channels RA7 and RL7, and the acquisition lead marks of the body surface electrocardiogram are L49-L56 which are respectively fixed at the positions of the marks 49-56; the reference lead channels of the No. 8 dynamic acquisition box are RA8 and RL8, and the acquisition lead marks of the body surface electrocardiogram are L57-L64 which are respectively fixed at the positions of the reference marks 57-60.
Furthermore, the labels 1-49 are distributed on the front chest part of the body surface, and the labels 50-64 are distributed on the back part of the body surface; the labels 1-64 are distributed on the chest in front of the body surface, the upper bound is flat on the suprasternal fossa, the lower bound is positioned on the umbilical horizontal line, and the upper bound is divided into 7 rows and 11 columns; wherein, the labels 1-3 are distributed along the right axillary midline; the labels 4-6 and 7-9 are respectively distributed on two sides of the central line of the right clavicle, wherein the column of the label 4-6 is positioned on the middle parallel line position of the central line of the right clavicle and the right anterior axillary line, and the label 7-9 is positioned on the middle parallel line position of the central line of the right clavicle and the right lateral sternum; the reference numerals 10-16 and 17-23 are respectively distributed along the lateral sternum lines on the right side and the left side, the reference numerals 38-41 are distributed along the medial left clavicle line, the reference numerals 24-29, the reference numerals 30-31 and the reference numerals 32-37 are sequentially distributed between the lateral left sternum line and the medial left clavicle line at equal intervals, the reference numerals 42-45 are distributed along the anterior left axillary line, and the reference numerals 46-49 are distributed along the medial left axillary line; the upper bound of the marks 1-64 distributed on the back of the body surface is parallel to the 4 th thoracic vertebra, the lower bound is parallel to the 10 th thoracic vertebra, and the total is 3 rows and 5 columns; wherein the reference numerals 50-52 are distributed along the left posterior axillary line, the reference numerals 53-55 and 62-64 are distributed along the left and right lower scapular lines, respectively, and the reference numerals 56-58 and 59-61 are distributed along the left and right lateral paraspinal lines, respectively; wherein, the reference numerals 10 and 17 are positioned on the same horizontal plane and are the 1 st layer; the reference numbers 4, 7, 11, 18, 24, 32, 50, 53, 56, 59 and 62 are distributed on the same horizontal plane and are layers 2; the reference numbers 12, 19, 25, 33, 38 are located at the same horizontal plane and are the 3 rd layer; the reference numbers 1, 5, 8, 13, 20, 26, 30, 34, 39, 42, 46, 51, 54, 57, 60 and 63 are distributed on the same horizontal plane, and are the 4 th layer and are positioned at the 4 th intercostal space level; reference numerals 2, 14, 21, 27, 31, 35, 40, 43, 47 are located at the same horizontal plane, and are the 5 th layer; the reference numbers 3, 6, 9, 15, 22, 28, 36, 41, 44, 48, 52, 55, 58, 61 and 64 are distributed on the same horizontal plane and are layers 6; the reference numerals 16, 23, 29, 37, 45, 49 are positioned on the same horizontal plane, and are the 7 th layer; wherein, the level of the labels of the 1 st to 3 rd layers is positioned above the level of the 4 th ribbed clearance and evenly distributed at intervals of 3 cm; the level of the layer 5-7 reference marks is below the level of the 4 th intercostal space, equally spaced 3cm apart.
Furthermore, the 64-lead body surface electrocardiogram acquisition integration box takes Wilson central electric terminals generated by RA1-RA8 and corresponding RL1-RL8 as voltage references, the sampling frequency is 1000Hz, each 2 bytes is provided with one channel, 15 bits of A/D conversion are carried out, the base line is 2^14, and the amplitude range is +/-5 mv.
Furthermore, the electrocardio-lead patch is connected with the 64-lead body surface electrocardiogram acquisition integrated box through a fully shielded cable and a lead.
The invention has the beneficial effects that:
1. the invention adopts 64 multi-lead body surface electrode positions optimized by clinical data, and fully and completely reflects body surface electrocardio-activity information under the limited number of leads;
2. according to the invention, the special body surface electrocardiogram patch and the connecting lead are adopted, and compared with the conventional methods of adopting an array electrode, a strip electrode, an electrocardiogram acquisition vest and the like, the accuracy of electrocardiogram signal acquisition and the integrity of electrocardiogram signal transmission are ensured;
3. the invention adopts a mature dynamic electrocardiogram acquisition box, achieves the aim of synchronous acquisition in a parallel connection mode, is innovative in method, and can further expand 64 channels to more channels according to clinical requirements;
4. the invention is used for analyzing various arrhythmia (such as ventricular premature beat origin point positioning), myocardial infarction (such as acute myocardial infarction part judgment), cardiomyopathy (such as hypertrophic cardiomyopathy and other diagnoses) and the like which are common in clinic, and has higher clinical transformation prospect and clinical diagnosis application value.
Drawings
FIG. 1 is a schematic diagram of a multichannel body surface electrocardiogram acquisition box and an acquisition and analysis method;
FIG. 2 is a schematic diagram of the positioning and placement of a 64-lead body surface electrocardiogram patch;
FIG. 3 is a 64-lead body surface electrocardiogram obtained by the body surface electrocardiogram processing and analyzing software;
FIG. 4 is a schematic diagram of 64-lead body surface electrocardio patch positioning and placing;
FIG. 5 is a schematic diagram of the operation of the multi-channel body surface electrocardiogram collecting box;
FIG. 6 is a 64-lead body surface electrocardiogram of an example ventricular premature patient.
Detailed Description
The invention provides a working flow of a 64-channel body surface electrocardiogram synchronous real-time acquisition system for acquiring 64-channel body surface electrocardiograms and transmitting the 64-channel body surface electrocardiograms to analysis software, which is shown in figure 1 and mainly comprises the following steps:
1. a 64-lead body surface electrocardiogram acquisition integrated box based on a mature product-10 channel dynamic electrocardiogram recording box and a synchronous acquisition scheme;
multichannel body surface heart electrograph gathers box and synchronous acquisition scheme: the invention adopts 8 10-channel dynamic electrocardiogram acquisition boxes which are respectively marked as No. 1-8 dynamic acquisition boxes (acquisition boxes 1# -8 #). Each dynamic electrocardiogram acquisition box can acquire 10 channels of body surface electrocardiogram data, 2 channels of the dynamic electrocardiogram acquisition boxes are marked as RA (right arm) and RL (right leg) leads, the leads are respectively fixed at the far end of the right upper limb and the near end of the right lower limb so as to provide a Wilson central electric end and serve as a voltage reference of each dynamic electrocardiogram acquisition box; the remaining 8 channels are labeled as 8 leads for acquisition of a body surface electrocardiogram. Meanwhile, 8 dynamic acquisition boxes are connected in parallel to obtain a multi-channel electrocardio acquisition box which can be used for synchronously acquiring 64-channel body surface electrocardiograms in real time based on a Wilson central electric end as reference voltage, and a signal output module of the multi-channel electrocardio acquisition box is connected with a computer to transmit acquired multi-channel body surface electrocardio signal data in real time; and performing clock and baseline calibration to enable each dynamic acquisition box to start signal acquisition simultaneously. After the parallel arrangement, reference lead channels of the 1# acquisition box are RA1 and RL1 and are fixed on the right upper limb and the right lower limb, and acquisition lead marks of the electrocardiogram on the body surface are L1-L8 and are respectively fixed at the positions of the marks 1-8 in the upper figure 2; reference lead channels of the No. 2 acquisition box are RA2 and RL2 and are fixed on the right upper limb and the right lower limb, and the acquisition lead marks of the electrocardiogram on the body surface are L9-L16 and are respectively fixed at the positions of the marks 9-16 in the upper picture 2; reference lead channels of the 3# acquisition box are RA3 and RL3, and are fixed on the right upper limb and the right lower limb, and the acquisition lead marks of the electrocardiogram on the body surface are L17-L24 and are respectively fixed at the positions of the reference marks 17-24 in the upper picture 2; reference lead channels of the No. 4 acquisition box are RA4 and RL4 and are fixed on the right upper limb and the right lower limb, and the acquisition lead marks of the electrocardiogram on the body surface are L25-L32 and are respectively fixed at the positions of the reference marks 25-32 in the upper picture 2; reference lead channels of the No. 5 acquisition box are RA5 and RL5 and are fixed on the right upper limb and the right lower limb, and acquisition lead marks of the body surface electrocardiogram are L33-L40 and are respectively fixed at the positions of the marks 33-40 in the upper figure 2; reference lead channels of the No. 6 acquisition box are RA6 and RL6 and are fixed on the right upper limb and the right lower limb, and the acquisition lead marks of the electrocardiogram on the body surface are L41-L48 and are respectively fixed at the positions of the reference marks 41-48 in the upper picture 2; reference lead channels of the No. 7 acquisition box are RA7 and RL7 and are fixed on the right upper limb and the right lower limb, and acquisition lead marks of the electrocardiogram on the body surface are L49-L56 and are respectively fixed at the positions of the reference marks 49-56 in the upper picture 2; reference lead channels of the 8# acquisition box are RA8 and RL8 and are fixed on the right upper limb and the right lower limb, and the acquisition lead channels of the body surface electrocardiogram are marked as L57-L64 and are respectively fixed at the positions of the reference numbers 57-60 in the upper picture 2. The parameters of the parallel 64-channel body surface electrocardiogram acquisition equipment are as follows: a Wilson central electric terminal generated by RA1-8 and RL1-8 is used as a voltage reference, the sampling frequency is 1000Hz, one channel is formed in every 2 bytes, 15-bit A/D conversion is carried out, the baseline is 2^14, and the amplitude range is +/-5 mv.
2. A 64-lead special electrocardio-lead paster positioning and placing method;
the multichannel body surface electrocardio lead positioning and placing scheme comprises the following steps: the special 64-lead body surface electrocardio patch body surface positioning and placing scheme adopted by the invention is shown in figure 2 below. Each black dot in the figure represents an electrocardiogram electrode patch position, numbered 1 through 64; wherein, the reference numerals 1-49 are distributed on the front chest part of the body surface, and the reference numerals 50-64 are distributed on the back part of the body surface. The 64 patches are arranged on the chest in front of the body surface, the upper bound of the patches is flat on the suprasternal fossa, the lower bound of the patches is positioned on the umbilical horizontal line, the patches are divided into 7 rows and 11 columns in total, and the number of the electrodes in each column is different. Wherein reference numeral 13 corresponds to the V1 position of a conventional 12-lead electrocardiogram, reference numeral 20 corresponds to the V2 position of a conventional 12-lead electrocardiogram, reference numeral 40 corresponds to the V4 position of a conventional 12-lead electrocardiogram, reference numeral 43 corresponds to the V5 position of a conventional 12-lead electrocardiogram, and reference numeral 47 corresponds to the V6 position of a conventional 12-lead electrocardiogram. The labels 1-3 are distributed along the right axillary midline; reference numerals 4-6 and 7-9 are respectively distributed on two sides of the midline of the right clavicle, wherein the row of the reference numeral 4-6 is positioned on the middle parallel line position of the midline of the right clavicle and the right anterior axillary line, and the reference numeral 7-9 is positioned on the middle parallel line position of the midline of the right clavicle and the right lateral sternum; reference numerals 10-16 and 17-23 are respectively distributed along the lateral lines of the right and left sternums, reference numerals 38-41 are distributed along the medial line of the left clavicle, reference numerals 24-29, reference numerals 30-31 and reference numerals 32-37 are sequentially distributed between the lateral line of the left sternum and the medial line of the left clavicle with equal intervals, reference numerals 42-45 are distributed along the anterior line of the left axilla, and reference numerals 46-49 are distributed along the medial line of the left axilla. The upper border of the 64 patches distributed on the back of the body surface is flat to the 4 th thoracic vertebral body, and the lower border is flat at the 10 th thoracic vertebral height, and the total is 3 rows and 5 columns. Reference numerals 50-52 are distributed along the left posterior axillary line, reference numerals 53-55 and 62-64 are distributed along the left and right lateral scapular lines, respectively, and reference numerals 56-58 and 59-61 are distributed along the left and right lateral paraspinal lines, respectively. Reference numerals 10 and 17 are located on the same horizontal plane and are layer 1; the reference numbers 4, 7, 11, 18, 24, 32, 50, 53, 56, 59 and 62 are distributed on the same horizontal plane and are layers 2; the reference numbers 12, 19, 25, 33, 38 are located at the same horizontal plane and are the 3 rd layer; the reference numbers 1, 5, 8, 13, 20, 26, 30, 34, 39, 42, 46, 51, 54, 57, 60 and 63 are distributed on the same horizontal plane, and are the 4 th layer and are positioned at the 4 th intercostal space level; the reference numbers 2, 14, 21, 27, 31, 35, 40, 43, 47 are on the same horizontal plane, and are the 5 th layer; the reference numbers 3, 6, 9, 15, 22, 28, 36, 41, 44, 48, 52, 55, 58, 61 and 64 are distributed on the same horizontal plane and are layers 6; the reference numbers 16, 23, 29, 37, 45 and 49 are positioned at the same horizontal plane and are the 7 th layer; wherein, the level of the label of the 1 st to 3 rd layers is positioned above the level of the 4 th ribbed clearance and is evenly distributed at intervals of 3 cm; the level of the layer 5-7 reference numbers is below the level of the 4 th intercostal space, with 3cm intervals.
The lead positions V1-V6 of the conventional 12-lead electrocardiogram are as follows: v1: the fourth intercostal space at the right sternal margin; v2: the fourth intercostal space at the left border of the sternum; v4: the intersection of the fifth left intercostal space and the midline of the left clavicle; v3: is positioned at the midpoint of the connecting line of V2 and V4; v5: the junction between the fifth left rib and the anterior axillary line; v6: the junction between the fifth left intercostal and the axillary midline.
3. Body surface electrocardiogram data processing and analyzing software.
The body surface electrocardiogram data processing and analyzing software is adopted to collect, store and derive 64-lead body surface electrocardiogram information (figure 3) in real time, and clinical application scenes of various arrhythmia and the like are analyzed. The electrocardiogram acquired at the position of the L1-L64 leads in the 64-channel electrocardiogram acquisition integrated box simultaneously covers the conventional 12-lead body surface electrocardiogram information, for example, L13 corresponds to V1 of the conventional 12-lead electrocardiogram, L20 corresponds to V2 of the conventional 12-lead electrocardiogram, L40 corresponds to V4 of the conventional 12-lead electrocardiogram, L43 corresponds to V5 of the conventional 12-lead electrocardiogram, and L47 corresponds to V6 of the conventional 12-lead electrocardiogram.
Examples
Step 1: cleaning the skin of the front and back collecting areas of the collected person, and fixing 64 special body surface electrocardiogram patches (disposable electrocardio-electrodes, model LT-301, shanghai excited drawing medical equipment Co., ltd., shanghai, china) (figure 4) according to the electrocardiogram lead positioning scheme provided by the invention;
step 2: respectively connecting each special body surface electrocardiogram patch to the L1-L64 positions of the multi-channel electrocardiogram acquisition box through a special electrocardiogram machine lead wire, simultaneously connecting RA1-8 to the far end of the right upper limb, and connecting RL1-8 to the near end of the right lower limb (figure 4);
the special electrocardiograph lead wire adopts a fully shielded cable and a lead wire, has strong anti-interference capability, and ensures the accuracy of electrocardiosignals and the completeness of electrocardiosignal data.
And step 3: opening 8 dynamic electrocardio acquisition boxes and connecting an electrocardio signal output lead to a computer host (figure 5);
and 4, step 4: and (3) starting body surface electrocardiogram processing and analyzing software to synchronously acquire real-time and synchronous 64-channel body surface electrocardiograms, analyzing various arrhythmia such as origin of ventricular premature beat and the like, and simultaneously finishing acquisition, storage, data derivation and the like of the electrocardiograms, wherein as shown in fig. 6, the origin of ventricular premature beat of the patient can be preliminarily judged to be positioned in the right ventricular outflow tract of the heart based on the 64-lead body surface electrocardiograms.
Claims (1)
1. A multichannel body surface electrocardiosignal synchronous real-time acquisition system is characterized by comprising a 64-lead body surface electrocardiogram acquisition integrated box and an electrocardio-lead patch; the electrocardio-lead patch is connected with a 64-lead body surface electrocardiogram acquisition integrated box which is formed by connecting 8 10-channel dynamic electrocardio recording boxes in parallel, and synchronously acquires 64-channel body surface electrocardiograms in real time;
the synchronous real-time acquisition of 64-channel body surface electrocardiograms specifically comprises the following steps: marking 8 10-channel dynamic electrocardiogram acquisition boxes as No. 1-8 dynamic acquisition boxes respectively; each dynamic acquisition box acquires 10 channels of body surface electrocardiogram data, 2 channels of the dynamic acquisition box are marked as RA reference leads and RL reference leads and are respectively fixed at the far end of the right upper limb and the near end of the right lower limb, and the remaining 8 channels are marked as 8 leads and are used for acquiring a body surface electrocardiogram; the reference lead channels of the No. 1 dynamic acquisition box are RA1 and RL1, and the acquisition lead marks of the body surface electrocardiogram are L1-L8 which are respectively fixed at the positions of the marks 1-8; the reference lead channels of the No. 2 dynamic acquisition box are RA2 and RL2, the acquisition lead marks of the body surface electrocardiogram are L9-L16, and the acquisition lead marks are respectively fixed at the positions of the marks 9-16; the reference lead channels of the No. 3 dynamic acquisition box are RA3 and RL3, the acquisition lead marks of the body surface electrocardiogram are L17-L24, and the acquisition lead marks are respectively fixed at the positions of the marks 17-24; the reference lead channels of the No. 4 dynamic acquisition box are RA4 and RL4, and the acquisition lead marks of the body surface electrocardiogram are L25-L32 which are respectively fixed at the positions of the marks 25-32; the reference lead channels of the No. 5 dynamic acquisition box are RA5 and RL5, the acquisition lead marks of the body surface electrocardiogram are L33-L40, and the acquisition lead marks are respectively fixed at the positions of the marks 33-40; the No. 6 dynamic acquisition box has reference lead channels RA6 and RL6, and the acquisition lead marks of the body surface electrocardiogram are L41-L48 which are respectively fixed at the positions of the marks 41-48; reference lead channels of the No. 7 dynamic acquisition box are RA7 and RL7, and the acquisition lead marks of the body surface electrocardiogram are L49-L56 which are respectively fixed at the positions of the marks 49-56; the reference lead channels of the No. 8 dynamic acquisition box are RA8 and RL8, and the acquisition lead marks of the body surface electrocardiogram are L57-L64 which are respectively fixed at the positions of the marks 57-60;
the labels 1-49 are distributed on the front chest part of the body surface, and the labels 50-64 are distributed on the back part of the body surface; the labels 1-64 are distributed on the chest in front of the body surface, the upper bound is flat on the suprasternal fossa, the lower bound is positioned on the umbilical horizontal line, and the upper bound is divided into 7 rows and 11 columns; wherein, the labels 1-3 are distributed along the right axillary midline; reference numerals 4-6 and 7-9 are respectively distributed on two sides of the midline of the right clavicle, wherein the row of the reference numeral 4-6 is positioned on the middle parallel line position of the midline of the right clavicle and the right anterior axillary line, and the reference numeral 7-9 is positioned on the middle parallel line position of the midline of the right clavicle and the right lateral sternum; the reference numerals 10-16 and 17-23 are respectively distributed along the lateral sternum lines on the right side and the left side, the reference numerals 38-41 are distributed along the medial left clavicle line, the reference numerals 24-29, the reference numerals 30-31 and the reference numerals 32-37 are sequentially distributed between the lateral left sternum line and the medial left clavicle line at equal intervals, the reference numerals 42-45 are distributed along the anterior left axillary line, and the reference numerals 46-49 are distributed along the medial left axillary line; the upper bound of the markers 1-64 distributed on the back of the body surface is parallel to the 4 th thoracic vertebra, the lower bound is parallel to the 10 th thoracic vertebra, and the total height is 3 rows and 5 columns; wherein the reference numerals 50-52 are distributed along the left posterior axillary line, the reference numerals 53-55 and 62-64 are distributed along the left and right lower scapular lines, respectively, and the reference numerals 56-58 and 59-61 are distributed along the left and right lateral paraspinal lines, respectively; wherein, the reference numerals 10 and 17 are positioned on the same horizontal plane and are the 1 st layer; the reference numbers 4, 7, 11, 18, 24, 32, 50, 53, 56, 59 and 62 are distributed on the same horizontal plane and are layers 2; the reference numbers 12, 19, 25, 33, 38 are located at the same horizontal plane and are the 3 rd layer; the reference numbers 1, 5, 8, 13, 20, 26, 30, 34, 39, 42, 46, 51, 54, 57, 60 and 63 are distributed in the same horizontal plane, and are the 4 th layer and positioned at the 4 th intercostal space level; reference numerals 2, 14, 21, 27, 31, 35, 40, 43, 47 are located at the same horizontal plane, and are the 5 th layer; the reference numbers 3, 6, 9, 15, 22, 28, 36, 41, 44, 48, 52, 55, 58, 61 and 64 are distributed on the same horizontal plane and are layers 6; the reference numerals 16, 23, 29, 37, 45, 49 are positioned on the same horizontal plane, and are the 7 th layer; wherein, the level of the labels of the 1 st to 3 rd layers is positioned above the level of the 4 th ribbed clearance and evenly distributed at intervals of 3 cm; the horizontal planes of the labels of the 5 th layer to the 7 th layer are positioned below the level of the 4 th ribbed clearance and are evenly distributed at intervals of 3 cm;
the 64-lead body surface electrocardiogram acquisition integrated box takes a Wilson central electric end generated by RA1-RA8 and corresponding RL1-RL8 as a voltage reference, the sampling frequency is 1000Hz, each 2 bytes is provided with one channel, 15 bits of A/D conversion are carried out, the base line is 2^14, and the amplitude range is
5mv；
The electrocardio-lead patch is connected with the 64-lead body surface electrocardiogram acquisition integrated box through a fully shielded cable and a lead.
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