CN209490023U - Heart sound signal acquisition auscultation head - Google Patents
Heart sound signal acquisition auscultation head Download PDFInfo
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- CN209490023U CN209490023U CN201822190352.4U CN201822190352U CN209490023U CN 209490023 U CN209490023 U CN 209490023U CN 201822190352 U CN201822190352 U CN 201822190352U CN 209490023 U CN209490023 U CN 209490023U
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- heart sound
- piezo
- sound signal
- signal acquisition
- auscultation
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Abstract
The utility model is suitable for the field of medical instrument technology, provide a kind of heart sound signal acquisition auscultation head, including several sequentially connected auscultation units, each auscultation unit includes shell, clump weight, piezo and signal wire, the top of clump weight installation inside housings, the bottom end of piezo installation inside housings, resonator between piezo and clump weight for resonance can occur with piezo, one end of signal wire connects piezo, and the side that the other end of signal wire passes through shell connects heart sound signal acquisition instrument.Cardiechema signals can be precisely obtained using heart sound signal acquisition auscultation head, and by cardiechema signals display in wave shape, medical staff diagnoses by observing heart sound waveform, solve to listen to the phenomenon that heart sound causes mistaken diagnosis by ear due to medical staff.
Description
Technical field
The utility model belongs to the field of medical instrument technology more particularly to a kind of heart sound signal acquisition auscultation head.
Background technique
Heart sound is due to the diastole contraction of valvular switch, tendon and muscle, the impact of blood flow and the vibration of painstaking effort tube wall
A kind of dynamic and generation complex tone.It include about heart various pieces such as atrium, ventricle, big blood vessel, angiocarpy and each
A large amount of pathological informations of valvular function state are the most basic parameters of clinical assessment heart function state.When cardiovascular disease still
It does not develop to and was enough to generate clinical and pathological change (such as ECG Change) in the past, the noise and distortion occurred in heart sound is exactly weight
The diagnostic message wanted.Therefore, the important clinical Diagnostic Superiority that heart sound has electrocardio irreplaceable.
When tradition is diagnosed using heart sound, medical staff cardiechema signals are acquired and are listened to using stethoscope, root
It whether there is defect according to micro-judgment heart sound, the subjective experience that such method relies primarily on medical staff judges there is mistake
The phenomenon that sentencing.
Utility model content
In view of this, the utility model embodiment provides a kind of heart sound signal acquisition auscultation head, to solve the prior art
Middle medical staff listens to heart sound by ear, there are problems that erroneous judgement by micro-judgment.
In order to solve the above technical problems, technical solution adopted in the utility model is: a kind of heart sound signal acquisition auscultation
Head, including several sequentially connected auscultation units, each auscultation unit include shell, clump weight, piezo and signal wire, institute
The top that clump weight is mounted on the enclosure interior is stated, the piezo is mounted on the bottom end of the enclosure interior, the buzzing
It is the resonator that resonance can occur with the piezo between piece and the clump weight, one end of the signal wire connects the bee
Ring piece, and the side that the other end of the signal wire passes through the shell connects heart sound signal acquisition instrument.
Further, the weight of the clump weight is not less than ten grams.
Further, the heart sound signal acquisition auscultation head includes three auscultation units.
Further, the piezo is piezoelectric ceramics piezo.
Further, the diameter of the piezo is 27 millimeters, and resonance frequency is two kHz.
It is listened the beneficial effects of adopting the technical scheme are that the utility model designs a kind of heart sound signal acquisition
Head is examined, when being acquired to human heart sound signal, heart sound signal acquisition auscultation head is placed on the designated position of human body, due to matching
The setting of pouring weight can be such that heart sound signal acquisition auscultation head and human body is in close contact, and human body heart sound is passed in piezo and is converted into
Achieve the effect that increase acoustic pressure since with buzzer resonance can occur for resonator for electric signal, the electric signal warp being converted into
It crosses signal wire to be sent in heart sound signal acquisition instrument, completes the acquisition of human heart sound signal.Use heart sound signal acquisition auscultation head
It when to human heart sound signal acquisition, can capture faint cardiechema signals, can be increased by adjusting piezo and resonator
Acoustic pressure and the specific bandwidth of acquisition under specific frequency, and the cardiechema signals of acquisition are converted into electric signal and pass through signal wire transmission
It is analyzed to heart sound signal acquisition instrument, can precisely obtain cardiechema signals, and by cardiechema signals display in wave shape, medical staff
It is diagnosed by observing heart sound waveform, solves to listen to the phenomenon that heart sound causes mistaken diagnosis by ear due to medical staff.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of heart sound signal acquisition auscultation head provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of auscultation unit provided by the embodiment of the utility model.
In figure: 1, shell；2, clump weight；3, piezo；4, signal wire；5, resonator；6, unit is auscultated.
Specific embodiment
In being described below, for illustration and not for limitation, the tool of such as particular system structure, technology etc is proposed
Body details, to understand thoroughly the utility model embodiment.However, it will be clear to one skilled in the art that there is no these
The utility model also may be implemented in the other embodiments of detail.In other situations, omit to well-known system,
The detailed description of apparatus, circuit and method, in case unnecessary details interferes the description of the utility model.
In order to illustrate technical solution described in the utility model, the following is a description of specific embodiments.
As depicted in figs. 1 and 2, heart sound signal acquisition auscultation head includes several sequentially connected auscultation units 6, is each listened
Examining unit 6 includes shell 1, clump weight 2, piezo 3 and signal wire 4, and clump weight 2 is mounted on the top inside shell 1, piezo
3 are mounted on the bottom end inside shell 1, are the resonator 5 that resonance can occur with piezo 3, letter between piezo 3 and clump weight 2
One end of number line 4 connects piezo 3, and the side that the other end of signal wire 4 passes through shell 1 connects heart sound signal acquisition instrument.
When being acquired to human heart sound signal, heart sound signal acquisition auscultation head is placed on the designated position of human body, by
In the setting of clump weight 2, heart sound signal acquisition auscultation head and human body can be made to be in close contact, human body heart sound passes in piezo 3
It is converted into electric signal, since with buzzer resonance can occur for resonator 5, achievees the effect that increase acoustic pressure, be converted into
Electric signal is sent in heart sound signal acquisition instrument by signal wire 4, completes the acquisition of human heart sound signal.It is adopted using cardiechema signals
When collecting auscultation head to human heart sound signal acquisition, it can capture faint cardiechema signals, pass through and adjust piezo 3 and resonator
5 can increase the acoustic pressure under specific frequency and obtain specific bandwidth, and the cardiechema signals of acquisition are converted into electric signal and are passed through
Signal wire 4 is sent to heart sound signal acquisition instrument and is analyzed, and can precisely obtain cardiechema signals, and cardiechema signals are in wave shape aobvious
Show, medical staff is diagnosed by observing heart sound waveform, solves to cause mistaken diagnosis since medical staff listens to heart sound by ear
The phenomenon that.
In one embodiment of the utility model, the weight of clump weight 2 is not less than ten grams.This design can guarantee clump weight
2 can play the quality for increasing heart sound signal acquisition auscultation head entirety, guarantee heart sound signal acquisition auscultation head being placed in human body
When upper, heart sound signal acquisition auscultation head can be in close contact with human body, guarantee the good acquisition to human heart sound signal.
In one embodiment of the utility model, heart sound signal acquisition auscultation head includes three auscultation units 6.Human heart
Volume is little, and each heart sound signal acquisition auscultation head includes that three auscultation units 6 make when carrying out human heart sound signal acquisition
It is individually positioned in the two sides of heart with two heart sound signal acquisition auscultation heads, heart can be surrounded completely, realizes and heart sound is believed
Number acquisition.The auscultation unit 6 of different numbers can be set as needed simultaneously, such as be set as two or four.
In one embodiment of the utility model, piezo 3 is piezoelectric ceramics piezo 3.Piezoelectric ceramics piezo 3 includes
One piece of perfecting is brushed with the piezoelectric ceramic plate and one piece of metal plate of electrode, using adhesive, piezoelectric ceramic plate and metal plate bonding
Together, heart sound sound wave passes to pack of ceramic piezoelectric plates and so that pack of ceramic piezoelectric plates is generated electric signal and be sent to heart sound letter by signal wire 4
Number Acquisition Instrument, carries out the analysis of cardiechema signals.
Cardiechema signals band bandwidth can be obtained by the size of piezoelectricity singing piece 3 and resonator 5, i.e., is filtered from structure
Wave.Principle: piezo 3 is mounted in resonator Room 5, to generate high sound pressure.Utilize formula (helmholtz formula), Ke Yiji
Calculate the resonance frequency (f of resonator Room 5cav).Since piezo 3 and resonator Room 5 have resonance frequency appropriate, respectively
(f0) and (fcav), therefore, the acoustic pressure under specific frequency can be increased by the position of both control and obtain specific band
It is wide.
In one embodiment of the utility model, the diameter of piezo 3 is 27 millimeters, and resonance frequency is two kHz.
Usual resonance frequency is lower, and the diameter of piezo 3 is bigger, and thickness is thinner, but due to the cardiac size of human body
Limitation, is detected using 6 groups of probes, so the diameter of buzzer cannot be too big, two side of synthetical resonance frequency and diameter
Face factor, selecting diameter is 27 millimeters, and resonance frequency is the model of two kHz.
Embodiment described above is only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to before
Embodiment is stated the utility model is described in detail, those skilled in the art should understand that: it still can be with
It modifies the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit for various embodiments of the utility model technical solution that it does not separate the essence of the corresponding technical solution
And range, it should be included within the scope of protection of this utility model.
Claims (5)
1. a kind of heart sound signal acquisition auscultation head, which is characterized in that including several sequentially connected auscultation units, each auscultation
Unit includes shell, clump weight, piezo and signal wire, and the clump weight is mounted on the top of the enclosure interior, the bee
Ring piece is mounted on the bottom end of the enclosure interior, can occur with the piezo between the piezo and the clump weight humorous
The resonator of vibration, one end of the signal wire connect the piezo, and the other end of the signal wire passes through the side of the shell
Portion connects heart sound signal acquisition instrument.
2. heart sound signal acquisition auscultation head according to claim 1, which is characterized in that the weight of the clump weight is not less than
Ten grams.
3. heart sound signal acquisition auscultation head according to claim 1, which is characterized in that the heart sound signal acquisition auscultation head
Including three auscultation units.
4. heart sound signal acquisition auscultation head according to claim 1, which is characterized in that the piezo is piezoelectric ceramics bee
Ring piece.
5. heart sound signal acquisition auscultation head according to claim 1, which is characterized in that the diameter of the piezo is 27 millis
Rice, resonance frequency are two kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822190352.4U CN209490023U (en) | 2018-12-25 | 2018-12-25 | Heart sound signal acquisition auscultation head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822190352.4U CN209490023U (en) | 2018-12-25 | 2018-12-25 | Heart sound signal acquisition auscultation head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209490023U true CN209490023U (en) | 2019-10-15 |
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ID=68153781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822190352.4U Active CN209490023U (en) | 2018-12-25 | 2018-12-25 | Heart sound signal acquisition auscultation head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209490023U (en) |
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2018
- 2018-12-25 CN CN201822190352.4U patent/CN209490023U/en active Active
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