CN108236462A - Phono sensor integral type applies - Google Patents
Phono sensor integral type applies Download PDFInfo
- Publication number
- CN108236462A CN108236462A CN201810159285.1A CN201810159285A CN108236462A CN 108236462 A CN108236462 A CN 108236462A CN 201810159285 A CN201810159285 A CN 201810159285A CN 108236462 A CN108236462 A CN 108236462A
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- China
- Prior art keywords
- heart sound
- probe
- electrocardioelectrode
- electrocardioelectrodes
- heart
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 210000002216 heart Anatomy 0.000 claims abstract description 77
- 239000000523 sample Substances 0.000 claims abstract description 50
- 238000002555 auscultation Methods 0.000 claims description 9
- 239000012528 membrane Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 19
- 210000000709 aorta Anatomy 0.000 description 8
- 239000004020 conductor Substances 0.000 description 8
- 210000000591 tricuspid valve Anatomy 0.000 description 7
- 230000000747 cardiac effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 210000002837 heart atrium Anatomy 0.000 description 5
- 210000001562 sternum Anatomy 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 230000003601 intercostal effect Effects 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 210000004115 mitral valve Anatomy 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 210000005241 right ventricle Anatomy 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000017531 blood circulation Effects 0.000 description 3
- 210000005240 left ventricle Anatomy 0.000 description 3
- 230000002685 pulmonary effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 210000001147 pulmonary artery Anatomy 0.000 description 2
- 210000001013 sinoatrial node Anatomy 0.000 description 2
- 208000035211 Heart Murmurs Diseases 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000001746 atrial effect Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 210000004413 cardiac myocyte Anatomy 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000003709 heart valve Anatomy 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004088 pulmonary circulation Effects 0.000 description 1
- 210000003102 pulmonary valve Anatomy 0.000 description 1
- 230000002336 repolarization Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 230000002861 ventricular Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/251—Means for maintaining electrode contact with the body
- A61B5/257—Means for maintaining electrode contact with the body using adhesive means, e.g. adhesive pads or tapes
- A61B5/259—Means for maintaining electrode contact with the body using adhesive means, e.g. adhesive pads or tapes using conductive adhesive means, e.g. gels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/683—Means for maintaining contact with the body
- A61B5/6832—Means for maintaining contact with the body using adhesives
- A61B5/6833—Adhesive patches
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
- A61B5/6844—Monitoring or controlling distance between sensor and tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/02—Stethoscopes
- A61B7/04—Electric stethoscopes
Abstract
Phono sensor integral type applies, there are heart sound probe and multiple electrocardioelectrodes including the patch with mucigel, on patch, electrocardio probe and heart sound probe expose to mucigel, wherein three electrocardioelectrodes are arranged to three-legged structure, and three electrocardioelectrodes are respectively formed limb leads two-by-two.The present invention is integrated with electrocardioelectrode and heart sound probe simultaneously in an application, can obtain electrocardiogram and caardiophonogram simultaneously.
Description
Technical field
The present invention relates to wearable health of heart care medicine instrument fields, particularly a kind of to monitor phono simultaneously
Integral electrode application.
Background technology
In human heart, sinoatrial node automatically, generate electric current with having the rhythm and pace of moving things, electric current is transmitted to the heart by the sequence of conductive tissue
Dirty each position, so as to cause the contraction and diastole of cardiac muscle cell.The excitement sent out by sinoatrial node is by certain approach and mistake
Cheng Yici is transmitted to atrium and ventricle, causes the excitement of entire heart.Therefore, the electricity occurred in heart each section excited process becomes
Direction, approach, order and the time of change have rule.This biology Electrical change is anti-by the conductive resistance value around heart and body fluid
Body surface is reflected, makes parts of body that regular Electrical change occur in each cardiac cycle.Limb is placed in leading electrode
The cardiac electric change curve that the appointed part of body or body records out becomes electrocardiogram.
Electrocardiogram is typically to be recorded by cardiac diagnosis lead.Cardiac diagnosis lead refers to when recording ECG signal, input lead
The specific test position of matrix (positive input terminal), reference position (negative input end) and the connection side for being grounded position are placed on electrode
Formula.Wherein, if one or two electrode is connected with heart, referred to as direct lead；If electrode (is more than that heart is straight far from heart
Diameter 2 times or more) then it is known as indirect lead；When one or two electrode is close to heart, but is not connected directly with heart, then it is known as
Semidirect lead.Clinically most commonly used at present is 12 lead system of standard, wherein, standard I, II, III lead is indirect
Bipolar lead, V1~V6 unipolar chest leads are semi-direct unipolar leads；AVR, aVL, aVF monopole augmented limb lead are indirect
Unipolar lead.
Caardiophonogram shows heart sound and heart adventitious sound, noise figure.Caardiophonogram is to the form and frequency of judgement heart murmur
Composition has great role, more can determine that the time of heart sound and noise, clearly distinguishes the sequence that certain heart sound occur, differentiates week aroused in interest
Interim coherent continuous murmur.Caardiophonogram has 4 waveforms, right atrial wall wave pattern A, ventricular systolic wave SW, rapid filling wave RFW and
Slow filling wave SFW.For first heart sound S1 usually by tetra- waveforms of A, SW, RFW, SFW, second heart sound S2 has two waveforms of A, P.It is right
There is tricuspid valve between atrium and right ventricle, have bicuspid valve between atrium sinistrum and left ventricle, there is lung to move between right ventricle and pulmonary artery
Arteries and veins valve, there is aorta petal between left ventricle and aorta.Atrium dextrum is excited, and tricuspid valve is opened, and blood flow enters right ventricle, tricuspid valve
It closes, right ventricle is excited, blood flow input pulmonary artery.Blood after pulmonary circulation enters atrium sinistrum, and bicuspid valve opens blood and enters a left side
Ventricle, mitral valve closure, left ventricle is excited, blood flow input aorta.S1's results from bicuspid valve (T1) and tricuspid valve (M1)
It is closed related, the generation of S2 is that the closure of aorta petal (A2) and pulmonary valve (P2) causes.
The initiating agent of heart variation, shows, first heart sound S1 lags behind the R of electrocardiogram at first when heart potential changes
Wave, second heart sound S2 is after electrocardio repolarization wave (T waves).
Heart valve area of auscultation is usually there are five area, 1. mitral area M:Positioned at apex beat point of maximum intensity, also known as apical region of heart；
2. pulmonary area P:In the 2nd intercostal of left border of sternum；3. aortic area A:Heart bottom right, positioned at the 2nd intercostal of right border of sternum；
4. the second area of auscultation of aorta petal E:Heart bottom left in the 3rd intercostal of left border of sternum, also known as Erb areas, is conducive to diagnose aorta
Valve incompetence；5. tricuspid valve area T:In breastbone lower end left border, i.e. left border of sternum the 4th, 5 intercostals.Cardiophony sequence be：1. two
Cusp area M starts-the 2. tricuspid valve area of the second area of auscultation of the aorta petal E of the aortic area A of pulmonary area P -3. -4. -5.
T.Either：5. tricuspid valve area starts -4. two point of the pulmonary area of the aortic area of the second area of auscultation of aorta petal -3. -2. -1.
Valve area.Normal heart, first heart sound is most clear in apex, and portion is most clear deep down for second heart sound.
Multiple electrocardioelectrodes are pasted on human skin surface, electrocardio by existing electrocardio or heart sound monitoring instrument needs respectively
After electrode and human contact are good, then heart sound is popped one's head in and is placed on cardiac auscultation area, be easy to cause between each electrocardio pole piece and be bonded
It mismatches, and having for electrocardio pole piece position patch will influence the correct in place of heart sound probe during deviation, using trouble, efficiency is low
Under.
Invention content
The purpose of the present invention is to provide a kind of hearts for being integrated with electrocardioelectrode and heart sound probe simultaneously in an application
Electric heart sound transducer integral type application.
Phono sensor integral type applies, including the patch with mucigel, it is characterised in that：There is the heart on patch
Sound is popped one's head in and multiple electrocardioelectrodes, and electrocardioelectrode and heart sound probe expose to mucigel, wherein three electrocardioelectrodes are arranged to
Three-legged structure, three electrocardioelectrodes are respectively formed limb leads two-by-two.
Electrocardioelectrode and heart sound probe are not covered by mucigel, therefore heart sound probe can be with human skin with electrocardioelectrode
It is in direct contact, therefore heart sound probe measurement is to the biological Electrical change of human body surface, what heart sound probe measurement to heart movement generated
Sound wave.Region in application in addition to electrocardioelectrode is popped one's head in heart sound is covered by mucigel, so as to apply reliable patch
In human skin.
Form the scheme of six lead of electrocardio：Heart sound probe position membrane type auscultation probe, the film of heart sound probe have contre electrode, in
Centre electrode is located at the center of three-legged structure, and three electrocardioelectrodes form lead with contre electrode respectively.In this way, four electrocardioelectrodes
Form six leads.
Preferred scheme：Contre electrode fixes the center with film, and contre electrode protrudes from film.
Form the scheme of additional leads：There is additional electrocardioelectrode, each additional electrocardioelectrode is electric with center in application
Pole forms lead.Therefore, N number of additional electrocardioelectrode forms the N leads except six leads.
About electrocardioelectrode and the scheme of heart sound probe wire：The conducting wire of conducting wire and the heart sound probe of all electrocardioelectrodes converges
Collection pops one's head in form bundle conductor with heart sound, and bundle conductor is connect by rat tail with Signal connector, has on Signal connector and conducting wire
One-to-one signal terminal.Signal connector will apply and electrocardioelectrode thereon, heart sound pop one's head in and be connected with host.
Setting detector judge apply electrocardioelectrode whether the scheme with skin contact：Electrocardio applies detector, including
Housing, weak mains, probe, detection terminal and signal lamp, it is logical to form detection for indicating lights connected in series between probe and each detection terminal
Road, all detection paths are in parallel, and weak mains are powered for detection path.The signal terminal one of detection terminal and Signal connector is a pair of
Should, probe is can be with the conductor of skin contact.
The detection terminal of detector and signal terminal are conductor, detection terminal with after signal terminal good contact, probe
With user's skin contact, when only electrocardioelectrode is with user's skin contact, the indicator light of corresponding detection path can just light.
The indicator light of certain one or several detection path is not bright, then illustrate corresponding electrocardioelectrode not with skin contact.After the completion of test
Detector is removed, the Signal connector of application is connect to the electrocardiogram and caardiophonogram that can be monitored and obtain user with host.
As a preferred option, when Signal connector is raised pin end, detector is the female connector for having slot or pothole；
Or Signal connector is pin end of the detector for protrusion when having the female connector of slot or pothole.
As a preferred option, weak mains are detachable battery or are built in the lithium battery of detector, and detector has lithium
The charge port of battery.
The advantage of the invention is that：
1st, integrated electrocardioelectrode and heart sound are popped one's head in simultaneously in disposable application, and use can be obtained simultaneously using an application
The electrocardiogram and caardiophonogram of person.
2nd, multi-lead Simultaneous Monitoring user's electrocardio of more than six leads is integrated in an application.
3rd, the conducting wire needed for all leads is unified draws, and is conducive to host be connected using standard signal connector.
4th, application is disposable, and a people one pastes, clean hygiene.
5th, after detector and Signal connector connection, can detect each electrocardioelectrode whether with skin good contact, and give
Do well instruction, i.e., when electrocardioelectrode is with skin attachement, indicator light is bright；When electrocardioelectrode is not with skin contact, indicator light goes out.
Description of the drawings
Fig. 1 is the schematic diagram of the first application.
Fig. 2 is the schematic diagram for second of application that electrocardioelectrode is integrated on heart sound probe.
Fig. 3 is the schematic diagram of the third application with additional electrocardioelectrode.
Fig. 4 is the schematic diagram that heart sound probe is integrated with electrocardioelectrode.
Fig. 5 is the schematic diagram of detector.
Specific embodiment
In some embodiments, as shown in Figure 1, phono sensor integral type applies, including the patch with mucigel
Piece 2 has heart sound probe 1 and multiple electrocardioelectrodes on patch 2, and electrocardioelectrode and heart sound probe 1 expose to mucigel, wherein
Three electrocardioelectrodes D1, D2, D3 are arranged to three-legged structure, and three electrocardioelectrodes D1, D2, D3 form limb leads two-by-two.
Electrocardioelectrode and heart sound probe 1 are not covered by mucigel, therefore heart sound probe 1 can be with human body skin with electrocardioelectrode
Skin is in direct contact, therefore heart sound probe 1 measures the biological Electrical change of human body surface, and heart sound probe 1 measures heart movement production
Raw sound wave.Region in application in addition to electrocardioelectrode is with heart sound probe 1 is covered by mucigel, reliable so as to apply
Be attached to human skin.In this disposable application while electrocardioelectrode and heart sound probe 1 are integrated, it can be simultaneously using an application
Obtain the electrocardiogram and caardiophonogram of user.
In some embodiments, the application structure of six lead of electrocardio is formed：1 membrane type auscultation as shown in Fig. 2, heart sound is popped one's head in
Probe, the film 11 of heart sound probe 1 have contre electrode DC, contre electrode DC to be located at the center of three-legged structure, three electrocardioelectrode D1,
D2, D3 form lead with contre electrode DC respectively.In this way, three electrocardioelectrodes D1, D2, D3 form three leads, center electricity two-by-two
Pole DC and three electrocardioelectrode D1, D2, D3 are respectively formed three leads, six leads are had altogether in application.
Preferred scheme：As shown in figure 4, contre electrode DC fixes the center with film 11, and contre electrode DC protrudes from film
11.Heart sound probe 1 is adjacent to skin, contre electrode DC is tensioned film 11, and the minim gap between film 11 and skin forms level-one
Humorous chamber, the chamber of heart sound 1 script of probe form the humorous chamber of two level, and the humorous chamber of two-stage amplifies heart sound twice.
In some embodiments, the scheme of additional leads is formed：As shown in figure 3, there is additional electrocardioelectrode DF in application,
Each additional electrocardioelectrode DF forms lead with contre electrode DC.Therefore, N number of additional electrocardioelectrode DF is formed except six leads
N leads.Multi-lead Simultaneous Monitoring user's electrocardio of more than six leads is integrated in an application.
In some embodiments, about electrocardioelectrode and the scheme of heart sound 1 conducting wire of probe：The conducting wire of all electrocardioelectrodes and
The conducting wire of heart sound probe 1 comes together in heart sound probe 1 and forms bundle conductor, and bundle conductor connect with Signal connector, has on Signal connector
With the one-to-one signal terminal of conducting wire.Signal connector will apply and electrocardioelectrode thereon, heart sound probe 1 are connected with host.
The unified extraction of conducting wire needed for all leads, is conducive to host be connected using standard signal connector.
In some embodiments, setting detector judge apply electrocardioelectrode whether the scheme with skin contact：Such as Fig. 5
It is shown, electrocardio application detector, including housing, weak mains, probe 3, detection terminal and signal lamp 4, probe 3 and each test side
Indicating lights connected in series forms detection path between son, and all detection paths are in parallel, and weak mains are powered for detection path.Detection terminal with
The signal terminal of Signal connector corresponds, and probe 3 is can be with the conductor of skin contact.
The detection terminal of detector and signal terminal are conductor, detection terminal with after signal terminal good contact, probe 3
With user's skin contact, when only electrocardioelectrode is with user's skin contact, the indicator light of corresponding detection path can just light.
The indicator light of certain one or several detection path is not bright, then illustrate corresponding electrocardioelectrode not with skin contact.After the completion of test
Detector is removed, the Signal connector of application is connect to the electrocardiogram and caardiophonogram that can be monitored and obtain user with host.
As a preferred option, when Signal connector is raised pin end, detector is the female connector for having slot or pothole；
Or Signal connector is pin end of the detector for protrusion when having the female connector of slot or pothole.
As a preferred option, weak mains are detachable battery or are built in the lithium battery of detector, and detector has lithium
The charge port of battery.
After detector is connect with Signal connector, can detect each electrocardioelectrode whether with skin good contact, and provide
When state instruction, i.e. electrocardioelectrode are with skin attachement, indicator light is bright；When electrocardioelectrode is not with skin contact, indicator light goes out.
In some embodiments, using the method for cardiac monitoring unit, the heart sound disposably applied probe is attached to heart sound
Area of auscultation, the three-legged structure that three electrocardioelectrodes are formed in vertex under, base upper, mucigel is close to human skin；It will inspection
It surveys device and is connected to the Signal connector disposably applied, the probe of detector is close to skin, when all indicator lights on detector are equal
It lights, then removes detector, Signal connector is connected to phono instrument, opens phono instrument, obtains the electrocardio of user
Figure and caardiophonogram.The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill of the art
Personnel without departing from the inventive concept of the premise, can also make several improvements and modifications, these improvements and modifications should also regard
For in the scope of the present invention.
Claims (4)
1. phono sensor integral type applies, including the patch with mucigel, it is characterised in that：There is heart sound on patch
Probe and multiple electrocardioelectrodes, electrocardio probe and heart sound probe expose to mucigel, wherein three electrocardioelectrodes are arranged to three
Corner structure, three electrocardioelectrodes are respectively formed limb leads two-by-two.
2. phono sensor integral type application as described in claim 1, it is characterised in that：Heart sound probe position membrane type auscultation
Probe, the film of heart sound probe have a contre electrode, and contre electrode is located at the center of three-legged structure, three electrocardioelectrodes respectively with center
Electrode forms lead.
3. phono sensor integral type application as claimed in claim 2, it is characterised in that：Contre electrode is fixed and film
Center, and contre electrode protrudes from film.
4. the phono sensor integral type application as described in one of claim 1-3, it is characterised in that：Have in application attached
Add electrocardioelectrode, each additional electrocardioelectrode forms lead with contre electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159285.1A CN108236462A (en) | 2018-02-26 | 2018-02-26 | Phono sensor integral type applies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159285.1A CN108236462A (en) | 2018-02-26 | 2018-02-26 | Phono sensor integral type applies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108236462A true CN108236462A (en) | 2018-07-03 |
Family
ID=62698859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810159285.1A Pending CN108236462A (en) | 2018-02-26 | 2018-02-26 | Phono sensor integral type applies |
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| Country | Link |
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| CN (1) | CN108236462A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108852346A (en) * | 2018-08-17 | 2018-11-23 | 青岛光电医疗科技有限公司 | A kind of personal multi-parameter monitoring device fixed and connected by Integrated electrode/sensor |
| CN108926358A (en) * | 2018-08-02 | 2018-12-04 | 成都艾视美科技有限公司 | Cardiac auscultation system for the many-one consultation of doctors |
| CN109091135A (en) * | 2018-07-17 | 2018-12-28 | 中北大学 | The miniature in-situ synchronization detection sensor of heart sound electrocardio based on MEMS technology |
| CN110269607A (en) * | 2019-07-15 | 2019-09-24 | 刘阳 | A kind of combination electrode measuring electrocardio and heart sound |
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| CN109091135A (en) * | 2018-07-17 | 2018-12-28 | 中北大学 | The miniature in-situ synchronization detection sensor of heart sound electrocardio based on MEMS technology |
| CN109091135B (en) * | 2018-07-17 | 2021-09-14 | 中北大学 | MEMS technology-based miniature in-situ synchronous heart sound and electrocardiogram detection sensor |
| CN108926358A (en) * | 2018-08-02 | 2018-12-04 | 成都艾视美科技有限公司 | Cardiac auscultation system for the many-one consultation of doctors |
| CN108852346A (en) * | 2018-08-17 | 2018-11-23 | 青岛光电医疗科技有限公司 | A kind of personal multi-parameter monitoring device fixed and connected by Integrated electrode/sensor |
| CN110269607A (en) * | 2019-07-15 | 2019-09-24 | 刘阳 | A kind of combination electrode measuring electrocardio and heart sound |
| CN110269607B (en) * | 2019-07-15 | 2023-12-12 | 湖南可孚芯驰医疗科技有限公司 | Composite electrode for measuring electrocardio and heart sound |
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