阅读说明：本技术 三导贴片式l型长时程动态心电记录仪及三导联连接方法 (Three-lead patch type L-shaped long-time dynamic electrocardiograph recorder and three-lead connection method ) 是由 沈继斌 刘晓英 于 2021-10-12 设计创作，主要内容包括：提供一种三导贴片式L型长时程动态心电记录仪(20),包括从壳体(1)的底面露出的第1～4氯化银片(R1、R2、L1、Zo)。在检测时,第1～3氯化银片用于拾取第1～3信号拾取点位置的心电检测信号。在第1氯化银片(R1)与第3氯化银片(L1)之间构成胸部“－”字型导联B,用于记录左心房的P波特征电压。第1氯化银片(R1)与第2氯化银片(R2)之间构成胸部“∣”字型导联A,用于记录右心房的P波特征电压。第2氯化银片(R2)与第3氯化银片(L1)之间构成胸部“/”字型导联C,用于记录左右心房的混合P波特征电压。通过针对体表的三个非等电部位,有选择性地放大左右心房电活动,使P波显示得更加清楚和明显。(A three-lead patch type L-shaped long-time dynamic electrocardiograph (20) is provided, which comprises 1 st to 4 th silver chloride sheets (R1, R2, L1 and Zo) exposed from the bottom surface of a shell (1). During detection, the 1 st to 3 rd silver chloride sheets are used for picking up electrocardio detection signals at the 1 st to 3 rd signal picking-up point positions. A chest "-" shaped lead B is formed between the 1 st silver chloride sheet (R1) and the 3 rd silver chloride sheet (L1) and is used for recording P wave characteristic voltage of the left atrium. The 1 st silver chloride patch (R1) and the 2 nd silver chloride patch (R2) form a chest "|" type lead A which is used for recording P wave characteristic voltage of the right atrium. A chest "/" shaped lead C is formed between the 2 nd silver chloride sheet (R2) and the 3 rd silver chloride sheet (L1) and is used for recording the mixed P wave characteristic voltage of the left atrium and the right atrium. The left and right atrial electrical activities are selectively amplified by aiming at three non-isoelectric parts of the body surface, so that the P wave is displayed more clearly and obviously.)

1. A three-lead patch type long-term dynamic electrocardiograph recorder (20) comprises a shell (1) and an electrocardiograph lead device (2) integrally packaged in the shell (1),

the electrocardiogram lead device (2) comprises:

1 st to 4 th silver chloride sheets (R1, R2, L1, Zo) integrated in the housing (1) and exposed from the proximal bottom surface of the housing (1),

wherein the 1 st silver chloride sheet (R1) is used for detecting electrocardiosignals picked up from the 1 st signal pick-up point position (51) positioned between the second ribs at the right edge of the sternum,

the 2 nd silver chloride sheet (R2) is used for detecting electrocardiosignals picked up from the 2 nd signal pick-up point position (52) positioned between the fourth rib at the right edge of the sternum,

the 3 rd silver chloride sheet (L1) is used for detecting electrocardiosignals picked up from a 3 rd signal pick-up point position (53) positioned between the second ribs at the left edge of the sternum,

the 4 th silver chloride patch (Zo) is a common electrode for grounding, for connection to the 4 th signal pickup point location (54) located between the second rib of the sternum.

2. Recorder according to claim 1,

at least one of the following lead a, lead B and lead C, consisting of two of the 1 st silver chloride patch (R1), the 2 nd silver chloride patch (R2) and the 3 rd silver chloride patch (L1), respectively, for recording the P-wave characteristic voltage of the atrium at the time of detection:

the chest-shaped connection between the 1 st signal pickup point position (51) between the second ribs at the right edge of the sternum and the 3 rd signal pickup point position (53) between the second ribs at the left edge of the sternum between the 1 st silver chloride sheet (R1) and the 3 rd silver chloride sheet (L1) forms a lead B for recording the P wave characteristic voltage of the left atrium,

the thoracic | -shaped connection between the 1 st silver chloride patch (R1) and the 2 nd silver chloride patch (R2) between the 1 st signal pickup point location (51) between the second rib at the right border of the sternum and the 2 nd signal pickup point location (52) between the fourth rib at the right border of the sternum constitutes lead A for recording the P-wave characteristic voltage of the right atrium,

the chest '/' connection between the 2 nd signal pickup point position (52) between the fourth rib at the right edge of the sternum and the 3 rd signal pickup point position (53) between the second rib at the left edge of the sternum between the 2 nd silver chloride sheet (R2) and the 3 rd silver chloride sheet (L1) forms a lead C for recording the mixed P wave characteristic voltage of the left atrium and the right atrium.

3. Recorder according to claim 1,

the electrocardiographic lead device (2) further comprises: a memory (21), an amplifier (22), a processor (23), a battery (25), a USB communication port (26) and a PCB (27) built in an intermediate package (29) formed on the housing (1),

the amplifier (22) is used for amplifying electrocardiosignals picked up by the 1 st to 4 th silver chloride sheets (R1, R2, L1 and Zo),

the memory (21) is used for receiving the electrocardiogram data processed by the processor (23) and storing the electrocardiogram data,

the battery (25) serves as a power supply for the recorder (20).

4. Recorder according to claim 1,

the 1 st to 4 th silver chloride sheets (R1, R2, L1 and Zo) are depolarized disc-shaped silver chloride electrode sheets.

5. Recorder according to claim 3,

the USB communication ports (26) are 4 ports formed on the shell (1) and formed by 4 silver chloride sheets.

6. Recorder according to claim 1,

the straight line distance between the center positions of the 1 st and 2 nd silver chloride sheets (R1 and R2) is 6.6 +/-0.5 cm;

the straight line distance between the center positions of the 1 st and 3 rd silver chloride sheets (R1 and L1) is 3.3 +/-0.5 cm;

the straight line distance between the center positions of the 2 nd and 3 rd silver chloride sheets (R2 and L1) is 7.4 +/-0.5 cm.

7. Recorder according to claim 3,

the 1 st to 4 th silver chloride sheets (R1, R2, L1, Zo), the memory (21), the amplifier (22), the processor (23), the battery (25) and the PCB (27) are integrally packaged in a middle packaging part (29) of the shell (1) by silica gel.

8. The recorder according to claim 1 to 7,

the housing (1) is L-shaped.

9. An electrocardiographic monitoring and diagnostic system comprising:

a recorder according to any one of claims 1 to 8; and

and an external device for data communication connected to the USB communication port (26) by a conductor or wire.

10. A three-lead connection method of a recorder according to any of claims 1 to 7, comprising the steps of:

connecting 1 st to 4 th silver chloride strips (R1, R2, L1, Zo) of the recorder (20) to four detection electrodes (R1, R2, L1, Zo) respectively to form 1 st to 3 rd leads A to C; or

The 1 st to 4 th silver chloride strips (R1, R2, L1, Zo) of the recorder (20) are connected to four electrodes (R1, R2, L1, Zo) provided on the distal surface of a double-sided adhesive type electrode sheet (30) to form 1 st to 3 rd leads A to C, respectively, wherein the housing (1) is formed in an L shape and is used for being connected to the double-sided adhesive type electrode sheet (30) formed in an L shape.

Technical Field

The invention relates to a medical instrument for dynamic electrocardiogram acquisition and detection, in particular to a three-lead patch type L-shaped long-time dynamic electrocardiogram recorder and a three-lead connection method.

Background

An electrocardiograph is configured to record an electrical change activity curve in which a bioelectrical change of a heart itself is reflected on a surface of a skin of a subject by placing a measuring electrode at a predetermined position on the surface, thereby obtaining an Electrocardiogram (ECG) which is generally used in clinical practice. The dynamic electrocardiographic recording means that a large amount of ECG data is obtained by continuously recording a plurality of channels on a human body for 24-72 hours so as to diagnose a transient electrocardiographic abnormal event such as arrhythmia, myocardial ischemia and the like.

The electrocardiogram recording circuit connecting method is called electrocardiogram lead by placing electrodes at different parts of human body and connecting the electrodes with the positive and negative electrodes of the electrocardiograph current meter through lead wires.

The international universal lead system widely adopted at present is called a conventional 12-lead system, and comprises a limb lead connected with a limb and a chest lead connected with a chest. The limb leads include standard limb leads and pressurized unipolar limb leads which are bipolar leads, the chest leads adopt unipolar leads, a positive electrode is placed at a specified position of the chest wall during detection, and 3 limb leads are respectively connected with a negative electrode through resistors to form a central electric end.

However, conventional 12-lead based lead system electrocardiographic and dynamic electrocardiographic recording cannot meet the special requirements of clinical electrocardiographic detection. In particular, the cardiac atrial voltage P-wave signal cannot be detected with high quality.

However, high quality detection of P-waves is of particular interest for a variety of cardiovascular diseases. This is because normal electrical activation of the heart starts at the sinoatrial node and is first conducted to the right atrium and through the bundle of atria to the left atrium, forming a P-wave on the electrocardiogram. Thus, the P-wave represents the activation of the atrium, the first half represents the activation of the right atrium, and the second half represents the activation of the left atrium. It is the excitation of left and right atria to send blood to left and right ventricles, and then the excitation of left and right ventricles to send blood to lung and whole body for oxygen exchange, thus completing metabolism and continuation of life body.

Wherein, the analysis of P wave has important significance for the diagnosis and differential diagnosis of arrhythmia.

The occurrence of P-wave abnormality is clinically seen in various diseases. The high-quality P wave detection and the accurate judgment of the form and rhythm of the P wave have important significance for clinical electrocardio. Such as pulmonary heart disease, coronary heart disease, hypertension, congenital heart disease, electrolyte and endocrine disorders. Especially various serious arrhythmia such as atrioventricular block and atrial fibrillation, atrial flutter, tachycardia, intraventricular block, etc.

In addition, the conventional portable dynamic recorder adopts a manner in which the electrode sheet is separated from the pickup device, and a long wire is used as the electrode wire. However, the snap-fastener mode between the electrode and the electrode wire limits the normal activities of patients such as human bodies to a certain extent, affects the normal lives of the patients, the tested degree is not good, the swing of the lead also affects the quality of electrocardiosignal acquisition, longer-range recording is not suitable, and the detection rate of a transient abnormal electrocardio event cannot be clinically improved.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a bipolar chest lead method in an L-lead connection mode and a three-lead patch L-type long-time dynamic electrocardiograph.

According to one aspect of the present invention, a three-lead patch type long-term dynamic electrocardiograph recorder is provided, which comprises a housing and an electrocardiograph lead device integrally packaged in the housing, wherein the electrocardiograph lead device comprises: and the 1 st to 4 th silver chloride sheets are integrated in the shell and exposed from the bottom surface of the near side of the shell, wherein the 1 st silver chloride sheet is used for detecting electrocardiosignals picked up from the 1 st signal pickup point position between the second ribs at the right edge of the sternum, the 2 nd silver chloride sheet is used for detecting electrocardiosignals picked up from the 2 nd signal pickup point position between the fourth ribs at the right edge of the sternum, the 3 rd silver chloride sheet is used for detecting electrocardiosignals picked up from the 3 rd signal pickup point position between the second ribs at the left edge of the sternum, and the 4 th silver chloride sheet is a common electrode used for grounding and is used for connecting with the 4 th signal pickup point position between the second ribs of the sternum.

According to the three-lead structure and the connection method, the left and right atrial electrical activities can be selectively amplified aiming at three non-isoelectric parts on the body surface of the chest, so that the P wave can be displayed more clearly and obviously.

Preferably, at least one of the following leads a, B and C, which may be comprised of two of the 1 st, 2 nd and 3 rd silver chloride strips, respectively, is used to record the P wave characteristic voltage of the atrium at the time of detection: a lead B is formed by the chest "-" connection between the 1 st signal pickup point position between the second ribs at the right edge of the sternum and the 3 rd signal pickup point position between the second ribs at the left edge of the sternum, which is formed between the 1 st silver chloride sheet and the 3 rd silver chloride sheet, is used for recording the P wave characteristic voltage of the left atrium, a lead A is formed by the chest "|" connection between the 1 st signal pickup point position between the second ribs at the right edge of the sternum and the 2 nd signal pickup point position between the fourth ribs at the right edge of the sternum, which is formed between the 1 st silver chloride sheet and the 2 nd silver chloride sheet, is used for recording the P wave characteristic voltage of the atrium, a lead C is formed by the "/" connection between the 2 nd signal pickup point position between the fourth ribs at the right edge of the sternum and the 3 rd signal pickup point position between the second ribs at the left edge of the sternum, which is formed between the 2 nd silver chloride sheet and the 3 rd silver chloride sheet, for recording the mixed P-wave characteristic voltage of the left and right atria.

Preferably, the electrocardiographic lead device may be configured to further include: the memory, the amplifier, the processor, the battery, the USB communication port and the PCB are arranged in a middle packaging part formed on the shell, the amplifier is used for amplifying electrocardiosignals picked up by the 1 st to 4 th silver chloride electrode plates, the memory is used for receiving electrocardiogram data obtained by the processing of the processor and storing the electrocardiosignals, and the battery is used for supplying power to the recorder.

Preferably, the 1 st to 4 th silver chloride electrode plates can be depolarized disc-shaped silver chloride electrode plates.

Preferably, the USB communication port may be 4 ports formed on the housing by 4 silver chloride plates.

Preferably, the straight line distance between the center positions of the 1 st and 2 nd silver chloride sheets can be 6.6 +/-0.5 cm; the straight line distance between the center positions of the 1 st and 3 rd silver chloride sheets can be 3.3 +/-0.5 cm; the straight distance between the center positions of the 2 nd and 3 rd silver chloride sheets can be 7.4 +/-0.5 cm.

Preferably, the 1 st to 4 th silver chloride electrode plates, the memory, the amplifier, the processor, the battery and the PCB can be integrally packaged in the middle packaging part of the shell by silica gel.

Preferably, the housing can be L-shaped.

According to another aspect of the present invention, there is provided a system for monitoring and diagnosing cardiac electricity, comprising: the above-mentioned recorder; and an external device for data communication connected to the USB communication port through a conductor or a wire.

According to another aspect of the present invention there is provided a three lead connection method for a recorder according to the above, comprising the steps of: respectively connecting the 1 st to 4 th silver chloride sheets of the recorder to four detection electrodes to form 1 st to 3 rd leads A to C; or connecting the 1 st to 4 th silver chloride strips of the recorder to the four electrodes arranged on the far side surfaces of the double-faced adhesive tape type electrode plates respectively to form 1 st to 3 rd leads A to C, wherein the shell is formed in an L shape and is used for being connected with the double-faced adhesive tape type electrode plates formed in the L shape.

Therefore, according to the patch type electrocardiograph recorder provided by the invention, the electrocardiograph electrodes are placed at three non-isoelectric parts on the surface of the chest body, bipolar leads are adopted, and patterns of electrocardiograph changes of 3 channels can be recorded by only arranging four electrode plates R1, R2, L1 and Zo, so that the long-time continuous electrocardiograph recording monitoring can be carried out on a human body.

Therefore, the recorder provided by the invention has good portability, can continuously detect the electrocardio or the electroencephalogram of a human body for a long time, and can quickly, simply and conveniently make timely, quick, simple and accurate judgment on the electrocardiosignals of injured patients in the occasions with limited medical conditions such as the field, wartime, home furnishing and the like.

Drawings

FIG. 1 schematically illustrates a bottom view of a dynamic electrocardiograph in accordance with an embodiment of the present invention, wherein four electrocardiograph electrodes and USB communications ports are shown.

Figure 2 schematically shows a side view of the recorder.

Fig. 3 schematically shows a top view of the recorder and a partial sectional view thereof in relation to the signal processing module and a sectional view along section V-V of fig. 2.

Figure 4 schematically illustrates the placement of the four electrocardio-electrodes of the electrocardiograph.

Figure 5 schematically illustrates the lead connection relationship of the dynamic electrocardiograph.

Fig. 6 schematically shows a circuit structure of the electrocardio-amplification collector.

Fig. 7 schematically shows a layout of electrode pads adapted to the recorder.

Detailed Description

Exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings. The exemplary embodiments described below and illustrated in the figures are intended to teach the principles of the present invention and enable one skilled in the art to implement and use the invention in several different environments and for several different applications. The scope of the invention is, therefore, indicated by the appended claims, and the exemplary embodiments are not intended to, and should not be considered as, limiting the scope of the invention. And the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present disclosure.

< three lead Structure and connection method >

In fig. 1 to 3, 5 and 6, a three-lead patch type L-shaped long-time dynamic electrocardiograph recorder 20 according to the present invention is schematically shown, which is hereinafter referred to as a recorder 20.

The recorder 20 includes a casing 1 formed in a substantially L-shape in appearance and an electrocardiographic lead device 2 disposed in the casing 1.

As shown in the bottom view, the side view and the top view of fig. 1 to 3, the electrocardiographic lead device 2 includes four silver chloride strips R1, R2, L1 and Zo integrated in the housing 1 and exposed from the bottom surface of the housing 1 near the side for detecting electrocardiographic signals picked up by the chest electrodes.

That is, the four R1, R2, L1, Zo silver chloride sheets are used to be directly coupled with one surface of the hydrogel type conductive colloid of the disposable electrode sheet 30 such as shown in fig. 7, and the other surface of the disposable electrode sheet 30 is directly coupled with a living body such as a human body to pick up an electrocardiographic signal of the human body.

The four R1, R2, L1 and Zo silver chloride strips are also arranged in an L-shape with a space therebetween as a whole, and are attached to the electrodes R1, R2, L1 and Zo of the disposable electrode sheet 30 at the following attachment positions on the chest, namely, the signal pickup point positions 51, 52, 53 and 54, so as to form A, B, C three leads:

and (3) lead A: r1+, right sternum fourth intercostal; r2-, right sternum second intercostal;

b lead: l1+, left sternal second intercostal; r1-, right sternum second intercostal;

c lead: r2+, right sternum fourth intercostal; l1-, left sternum second intercostal.

Referring to the mounting positions shown in fig. 4, signal pickup point location 51 corresponds to the second intercostal space at the right edge of the sternum, signal pickup point location 52 corresponds to the fourth intercostal space at the right edge of the sternum, signal pickup point location 53 corresponds to the second intercostal space at the left edge of the sternum, and signal pickup point location 54 corresponds to the second intercostal space of the sternum.

As shown in fig. 5, preferably, the straight-line distance between the center positions of the R1, R2, and L1 silver chloride sheets constituting each lead is preferably set to the following value but not limited thereto:

and (3) lead A: r1+ -R2-distance: 6.6 plus or minus 0.5 cm;

b lead: l1+ -R1-distance: 3.3 plus or minus 0.5 cm;

c lead: r2+ -L1-distance: 7.4 + -0.5 cm.

Note that recording instruments 20 of different sizes may be designed according to the subject to be examined so that the straight-line distances between the center positions of the R1, R2, and L1 silver chloride strips constituting the leads of each recording instrument 20 are different from each other. For example, the above. + -. 0.5cm may be changed to. + -. 0.1cm,. + -. 0.2cm,. + -. 0.3cm,. + -. 0.4cm or even an appropriate value therebetween.

< Components and functional modules >

As shown in fig. 1, 2, and 3, the electrocardiographic lead device 2 further includes: a memory 21, an amplifier 22, a processor 23, a battery 25, a USB communication port 26, a PCB 27, and other components 24 are built in an intermediate packaging part 29 formed in the case 1.

More specifically, the amplifier 22 is used to amplify the electrocardiographic signals picked up by the silver chloride electrode pads R1, R2, L1, Zo.

Preferably, a depolarized disc-shaped silver chloride electrode plate is adopted to pick up electrocardiosignals of a human body. As illustrated in fig. 5, each electrode pad R1, R2, L1, Zo of the ecg silver chloride is connected to the amplifier 22 terminal on the PCB board 27, for example, the ADS1293 ecg amplifier pickup, by a flexible film printed cable.

In the circuit module of the collector, three channels of CH1, CH2 and CH3 are respectively formed, namely an A lead is formed by R1+ and R2-; the B lead is formed by L1+ and R1-; the C lead is composed of R2+ and L1-.

Zo is a standard common electrode, or ground.

The memory 21 is used for receiving the electrocardiogram data processed by the processor 23 (microprocessor) and storing the electrocardiogram data. Preferably, a mass data storage is used.

The processor 23 is used for controlling and coordinating all operations, such as the amplification analog-to-digital conversion of the electrocardiosignal, data storage and data transmission.

The other pieces 24 and components 28 refer to other electronic circuit adapting components.

The battery 25 serves as a power supply for the recorder 20.

The V +, V-, D +, D-ports arranged on the housing 1 shown in fig. 1 are preferably 4 ports of a USB consisting of 4 pieces of silver chloride, for data communication by connection with a USB port of a computer through a conductor or wire.

Thus, the preferably disk-shaped silver chloride electrode pads R1, R2, L1, Zo are connected to the ecg signal amplifier 22 through wires (preferably, the amplifier 22 may adopt an ecg signal amplifying and data acquiring device AD1293, and the AD1293 is a chip integrated by the ecg acquisition, amplification, and a/D conversion of the company TI in usa), and the human ecg signals picked up by the silver chloride electrode pads R1, R2, L1, Zo are amplified, digitized by the micro-control chip of the processor 23, and stored in the memory 21.

The data transfer interface may then be used to transfer the data to a computer for analysis via the USB communication port 26.

The processed electrocardiosignals are transmitted in a storage mode, so that the portability and operability of monitoring can be improved.

< Integrated Package >

The recorder 21 according to the invention is preferably in an integrated package:

preferably, the electrocardiosignal pickup electrodes R1, R2, L1, Zo, the electrocardio lead connection, the electrocardiosignal amplifier 22, the data memory 21, the data transmission interface (USB communication port 26), the equipment power supply (battery 25), the power supply charging and other accessories are all packaged in the L-shaped device shell 1 by silica gel, for example, the total weight is about 15-20 g by material infusion and compression molding, all traditional long connecting wires for leads and snap-button separated electrocardio electrode plates are eliminated, and the normal activity of a human body is not influenced. Due to light weight and no lead, the non-inductive monitoring experience can be achieved, the daily life is not influenced, and the wireless monitoring device is easily accepted by the examinees.

Meanwhile, the recording quality of the electrocardiosignals is favorably improved due to the elimination of power line interference, and the requirement of continuously monitoring and recording the electrocardiosignals for more than 24-72 hours for picking up, recording and storing is met.

< Signal processing procedure >

After one surface of a hydrogel-type conductive gel, for example, a disposable electrode sheet 30, is attached to the signal pickup point positions 51, 52, 53, 54, which are four mounting positions shown in fig. 4, R1, R2, L1, Zo silver chloride electrode sheets of the recorder 20 according to the present invention are directly coupled to the electrodes R1, R2, L1, Zo on the front side of the electrode sheet, so that 3 leads A, B, C are formed by the R1, R2, L1, Zo silver chloride electrode sheets, as shown in fig. 5 and 6.

Thus, the electrocardiographic signals are picked up by the R1, R2, L1 and Zo silver chloride electrode plates, and the picked-up electrocardiographic signals are amplified by the amplifier 22 and sent to the processor 23.

The processor 23 samples the cardiac signal at regular time, performs AD conversion, and stores the result in the memory 21.

The electrocardiographic data in the memory 21 can be taken out by the processor 23 as needed and transmitted to an external device terminal such as a computer through the USB communication port 26 for computer analysis.

In this process, the power cord of the USB communication port 26 is connected to charge the battery of the recorder 20. The memory 21 may be cleared of ecg data by the processor 23 at appropriate times.

As shown in fig. 5 and 6, the recorder 21 according to the present invention adopts a bipolar lead connection method, and by adopting a three-lead bipolar chest lead consisting of four signal pickup points, the extraction, storage and processing of the electrocardiographic signals of the respective characteristics of the left and right atrial voltages can be performed with high quality, and can be used for connecting with an external electrocardiographic diagnosis reporting system.

< example 1>

The proximal side of an L-shaped cardiac electrode sheet 30 provided with four conductive hydrogel electrodes R1, R2, L1 and Zo, for example, is applied to the skin surface corresponding to the signal pickup point positions 51-54, and the four conductive hydrogel electrodes R1, R2, L1 and Zo exposed after the transparent film is removed at the far side form four signal pickup points, wherein one common electrode Zo and three signal electrodes R1, R2 and L1 are connected with silver chloride sheets R1, R2, L1 and Zo of the recorder 20 respectively through conductive hydrogel electrodes R1, R2, L1 and Zo, and can be used for detecting three-lead cardiac electric signals so as to monitor the cardiac electric activity.

Here, the proximal side corresponds to a side contacting the skin surface, and the distal side corresponds to a side away from the skin surface when applied for use.

Therefore, three leads consisting of the A lead, the B lead and the C lead are formed, wherein the A lead mainly reflects right atrial voltage of a heart, the B lead mainly reflects left atrial voltage of the heart, the C lead mainly reflects left atrial voltage and right atrial voltage of the heart in a comprehensive mode, and three-lead bipolar chest leads are formed corresponding to the positions 51-54 of the four signal pickup points in the electrocardio-lead connection mode and used for recording electrocardiograms of characteristics of the left atrium and the right atrium.

Thus, when the cardiac electrode sheet 30 is attached to the skin surface of the detection object, the silver chloride electrode sheets R1, R2, L1 and Zo can collect cardiac signals and transmit the cardiac signals to the signal processing module connected with the electrode sheets to further process the cardiac signals, thereby completing the collection and processing of the cardiac signals.

This connection method can perform signal extraction of the left and right atrial voltages with high quality, and can also satisfy signal extraction of the voltage of the left and right ventricles of a test object such as a patient.

More specifically, as shown in figure 5,

the chest-shaped connection between the position 51 of the signal pickup point between the second costal on the right edge of the sternum (handle) and the position 53 of the signal pickup point between the second costal on the left edge of the sternum forms a lead B which can be used for recording the P wave characteristic voltage of the left atrium.

(ii) the thoracic "|" connection between the location 52 of the signal pickup point between the fourth intercostal position at the right edge of the sternum and the location 51 of the signal pickup point between the second intercostal position at the right edge of the sternum forms lead a, which can be used to record the P-wave characteristic voltage of the right atrium.

(III) the chest "/" shape connection between the signal pickup point position 52 between the fourth rib on the right edge of the sternum and the signal pickup point position 53 between the second rib on the left edge of the sternum forms a lead C which can be used for recording the mixed P wave characteristic voltage of the left atrium and the right atrium.

Thus, the LS lead system for recording the P-wave characteristic voltages of the left and right atria is formed from lead A, B, C.

< technical effects >

As described above, according to the recorder of the present invention, it is possible to realize:

1. the chest A, B, C lead, effectively recording the P-waves that reflect the characteristics of the left and right atria;

2. long-time electrocardio recording is realized, so that a passing electrocardio abnormal signal can be effectively captured;

3. the simplified electrical scheme of relative arrangement between the electrocardio-electrodes reduces the operation difficulty of placement, improves the comfort of users and reduces the recording noise.

The three-lead electrocardiogram patch provided by the embodiment of the invention is suitable for long-time forced observation of patients, and can meet the requirements of clinical common monitoring or scientific research by monitoring or recording heart rhythm by using three electrocardiogram leads.

Moreover, the L-shaped cardiac electrode sheet 30 adapted to the recorder according to the present invention reduces the contact area between the cardiac electrode sheet and the skin to the maximum extent, and in the case of women, the contact area between the cardiac electrode sheet and the breast can be avoided or reduced, thereby saving the base material required for processing the cardiac electrode sheet.

Compared with C, N, T, U, X, Z, I-shaped three-lead heart electrode slice in the prior art, the three-lead heart electrode slice matched with the embodiment of the invention can effectively record and distinguish the form and rhythm of P wave.

< three-lead ECG signal acquisition method >

By adopting the three-lead patch type L-shaped long-time dynamic electrocardiograph recording instrument, the invention can advantageously provide a three-lead electrocardiograph signal acquisition method which can be convenient for a general user to finish three-lead electrocardiograph signal acquisition in a self-help operation manner, and can finish signal extraction of left and right atrial voltages with high quality by the lead connection manner.

As a specific implementation method, the method can comprise the following steps:

s1: one side surface of the double-faced adhesive tape type disposable electrode sheet 30 is stuck to the mounting position so that the electrodes r1, r2, l1 and zo of the electrode sheet 30 correspond to the signal picking point positions 51, 52, 53 and 54, respectively;

s2: silver chloride strips R1, R2, L1 and Zo of the recorder 20 are connected to the electrode sheet 30 so as to correspond to the electrodes R1, R2, L1 and Zo of the electrode sheet 30, respectively;

s3: starting detection;

s4: finishing detection in due time according to a preset time period;

s5: data is transferred from the recorder 20 to an external device such as a computer through the USB communication port 26.

Alternatively or optionally, as a specific implementation method, the following steps can be included:

s1': connecting the distal surface of the double-faced adhesive tape type electrode sheet 30 to the recorder 20 in such a manner that the four electrodes R1, R2, L1 and Zo of the electrode sheet 30 correspond to the 1 st to 4 th silver chloride sheets R1, R2, L1 and Zo of the recorder 20, respectively;

s2': pasting the near side surface of the electrode sheet 30 on the installation position corresponding to the 1 st to 4 th signal pick-up point positions 51, 52, 53 and 54 respectively;

s3': starting detection;

s4': and finishing detection according to a preset time period.

The double-sided tape of the electrode sheet 30 used in steps S2, S1', etc. is preferably of a hollow design so that one side (distal side) of the sheet-shaped hydrogel-type conductive gel may be directly coupled with the silver chloride sheet of the recorder and the other side (proximal side) may be directly coupled with the human body, whereby the connection of a tangible wire may be advantageously eliminated.

The conductive hydrogel adopts the sheet hydrogel type conductive colloid of the disposable electrocardio-electrode with excellent performance at present, so that the operability and the monitoring result are superior to those of the conventional drip conductive colloid of the disposable electrocardio-electrode needing Ultraviolet (UV) curing.

The term "contact" as used herein may refer to direct contact of an electrode with the exposed skin, or indirect contact between an electrode and the exposed skin with a conductive material (e.g., a conductive patch or conductive garment).

Unless expressly stated or indicated to the contrary, the numerical parameters set forth in this specification and attached claims are approximations that can vary depending upon the desired properties of the dimensions, such as the form, of the objects contemplated by the present disclosure or the specific application. In general, the expression is meant to encompass variations from the specified amount, in some embodiments, of ± 0.5 to 10%, and any numerical range recited herein is intended to include all sub-ranges subsumed therein.

As shown in FIG. 2, the bottom surface of the housing 1 is substantially horizontal to facilitate connection with the disposable electrode, and the bottom surface of the housing 1 may be covered with a film having four openings so that the 1 st to 4 th silver chloride sheets R1, R2, L1 and Zo are substantially flush and visually exposed from the openings.

Therefore, according to the invention, the three-lead patch type L-shaped long-time dynamic electrocardiograph recorder 20 is provided, and during detection, the 1 st to 3 rd silver chloride sheets are used for picking up electrocardiograph detection signals at the 1 st to 3 rd signal picking-up point positions. A chest "-" shaped lead B is formed between the 1 st silver chloride sheet R1 and the 3 rd silver chloride sheet L1 and is used for recording P wave characteristic voltage of the left atrium. The 1 st silver chloride slice R1 and the 2 nd silver chloride slice R2 form a breast | type lead A for recording P wave characteristic voltage of the right atrium. A chest "/" shaped lead C is formed between the 2 nd silver chloride sheet R2 and the 3 rd silver chloride sheet L1 and is used for recording the mixed P wave characteristic voltage of the left atrium and the right atrium. The left and right atrial electrical activities are selectively amplified by aiming at three non-isoelectric parts of the body surface, so that the P wave is displayed more clearly and obviously.

Further, the 1 st silver chloride flake R1 and the 3 rd silver chloride flake L1 may be disposed substantially symmetrically with respect to the 4 th silver chloride flake Zo but are not limited thereto. The outer shape of the case 1 does not exclude the shape other than the L-shape, and the 1 st to 4 th silver chloride strips R1, R2, L1 and Zo may be arranged in the L-shape. Further, the intermediate packing portion 29 is formed at a distal intermediate position of the housing opposite to the 4 th silver chloride sheet Zo, but is not limited thereto, and may be appropriately arranged according to the specific specification of each member. In the examples, the silver chloride electrode sheet was described as an example, but the invention is not limited thereto. In the embodiment, the double-sided adhesive type detection electrode sheet 30 formed in an L shape as the collecting electrode to be attached to the chest is exemplified, but the present invention is not limited thereto, and four detection electrodes R1, R2, L1, Zo provided individually may be connected to the silver chloride sheets R1, R2, L1, Zo of the recorder 20, respectively, as the collecting electrodes to form the 1 st to 3 rd leads a to C.

In addition, as an electrocardiographic monitoring and diagnosing system according to the present embodiment, the system may include not only the above-mentioned recorder but also an external device for performing data communication by being connected to the USB communication port 26 through a conductor or a wire; a server system using a communication module for wireless connection may be considered, and the server system may be respectively linked with the user APP terminal and the doctor APP terminal, and may also include a database for storing electrocardiographic data, a self-diagnosis system, a manual diagnosis system, a billing system, and the like.

While the invention has been described with reference to various specific embodiments, it should be understood that changes can be made within the spirit and scope of the inventive concepts described. Accordingly, it is intended that the invention not be limited to the described embodiments, but that it will have the full scope defined by the language of the following claims.