CN106344069A - Ultrasonic probe and ultrasonic imaging aided diagnosis system - Google Patents
Ultrasonic probe and ultrasonic imaging aided diagnosis system Download PDFInfo
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- CN106344069A CN106344069A CN201610895413.XA CN201610895413A CN106344069A CN 106344069 A CN106344069 A CN 106344069A CN 201610895413 A CN201610895413 A CN 201610895413A CN 106344069 A CN106344069 A CN 106344069A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4411—Device being modular
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4483—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device characterised by features of the ultrasound transducer
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/52—Devices using data or image processing specially adapted for diagnosis using ultrasonic, sonic or infrasonic waves
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Abstract
The invention discloses an ultrasonic probe and an ultrasonic imaging aided diagnosis system. The ultrasonic probe comprises a body and a handle, wherein the body is elastic, the end part of the body is in contact with tissues, and a cable is arranged in the handle; an ultrasonic transducer, an impedance matching adjuster and an electroacoustic transducer are sequentially arranged in the body in the axial direction from the contact end of the body and the tissues, and the impedance matching adjuster is electrically connected with the ultrasonic transducer; the end part of the ultrasonic transducer extends out of the end part of the body and is in contact with the tissues, and the electroacoustic transducer and the impedance matching adjuster are respectively connected with an outer ultrasonic control system through the cable in the handle. The ultrasonic probe has the advantage that the conventional ultrasonic tissue reconstruction imaging function is realized, and the low-frequency mechanical vibration can be performed via the electroacoustic transducer, and be transferred to the tissues via the body, so that the shear wave is formed in the tissues, is received by the ultrasonic transducer, and is outputted to the ultrasonic control system to analyze tissue hardness, thereby identifying the lesion characteristic.
Description
Technical field
The present invention relates to medical instruments field, more particularly, to a kind of ultrasonic probe and ultra sonic imaging assistant diagnosis system.
Background technology
Ultra sonic imaging is to scan tissue using ultrasonic acoustic beam, by the reception of reflected signal, process, to obtain internal device
The image of official.Ultrasonic imaging method is commonly used to judge the position of internal organs, size, form, determines scope and the physical property of focus,
The internal anatomy of some gland tissues is provided, differentiates the normal and abnormal, in ophthalmology, department of obstetrics and gynecology and cardiovascular system, digestion of fetus
System, urinary system application quite varied.
Traditional ultrasonic imaging method is only capable of organizational structure being reconstructed with imaging it is impossible to differentiate to lesion nature,
The tissue characteristics such as viscosity, elasticity cannot be differentiated.In addition, conventional Ultrasound imaging cannot carry out precise positioning to focus, become
As depth is inadequate.
Content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, provide a kind of ultrasonic probe with
And ultra sonic imaging assistant diagnosis system.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of ultrasonic probe, certain including having
Elastic and end is used for the body and the logical handle being provided with cable with contact tissue, and described is connect from body with tissue in vivo
The impedance matching actuator being disposed with ultrasonic transducer vertically and electrically connecting with ultrasonic transducer, electroacoustic are played in tactile end
Transducer, the end of ultrasonic transducer extend described body end for contact tissue, described electroacoustic transducer, impedance
The cable that coupling actuator passes through in handle respectively is connected with outside ultrasonic control system；
Described electroacoustic transducer is used for receiving the mechanical vibratory excitation signal of ultrasonic control system output to carry out low frequency machine
Tool vibrates, and described low-frequency mechanical vibrations are delivered to tissue by described body；Described ultrasonic transducer is used for controlling system ultrasonic
Launch ultrasound wave under the control of system, and receive produced by ultrasound echo signal and the tissue medium and low frequency mechanical vibration in tissue
Shearing wave signal, and the signal of reception is exported by impedance matching actuator carry out tissue hardness to ultrasonic control system and divide
Analysis and reconstructed tissue imaging.
In ultrasonic probe of the present invention, described body is the solid wood structure of tubular, outside tight set one outside solid wood structure
Shell, described electroacoustic transducer be speaker, and speaker cone basin opening towards solid wood structure away from tissue one end, and
Cone basin is non-contactly worn successively by a connector with certain degree of hardness and solid wood structure or cage connection, described handle
If be fixedly connected with speaker housings or ultrasonic transducer shell after shell, solid wood structure, being connected with cone basin in speaker
The cable that voice coil loudspeaker voice coil passes through in handle is connected with ultrasonic control system.
In ultrasonic probe of the present invention, described ultrasonic probe also includes one and is used for adjusting magnetic induction in speaker
Intensity and then the magnetic induction actuator of auxiliary adjustment low-frequency mechanical vibrations amplitude, described magnetic induction actuator passes through handss
Cable in handle is connected with outside ultrasonic control system.
In ultrasonic probe of the present invention, described magnetic induction actuator is in a magnet being wound on speaker
T ferrum on coil, ultrasonic control system passes through the size and Orientation of electric current in control coil and adjusts magnetic induction in speaker
Intensity.
In ultrasonic probe of the present invention, described probe also includes a magnet being arranged on speaker and impedance
Join the elastic component for reducing remained shock between actuator.
The invention also discloses a kind of ultra sonic imaging assistant diagnosis system, including described ultrasonic probe and ultrasonic control system
System, described ultrasonic control system includes:
Main control module；
Mechanical vibratory excitation signal drive module, connects described main control module and electroacoustic transducer, for by main control module
The mechanical vibratory excitation signal of output exports to electroacoustic transducer after being amplified；
Ultrasonic excitation signals produce and first control module of shaking, and connect described main control module and impedance matching actuator, use
After the ultrasonic excitation signals that main control module exports are processed, triggering ultrasonic transducer transmitting ultrasound wave is to tissue；
Signal processing module, connects described main control module and impedance matching actuator, for receive to ultrasonic transducer
Signal is delivered to main control module and carries out tissue hardness analysis and reconstructed tissue imaging after being processed.
In ultra sonic imaging assistant diagnosis system of the present invention, described mechanical vibratory excitation signal drive module includes
It is sequentially connected: the power amplification that the D/A converter module that is connected with main control module, band filter are connected with electroacoustic transducer
Module, the digital signal that D/A converter module is used for exporting main control module is converted to and is transformed into friendship after analog voltage signal again
Time-dependent current signal, band filter exports to work(after being used for carrying out the AC signal of reception the Filtering Processing of 5hz-1khz
Rate amplification module, power amplifier module is used for carrying out exporting to electroacoustic transduction after power amplification by filtered AC signal
Device.
In ultra sonic imaging assistant diagnosis system of the present invention, described electroacoustic transducer is speaker, described auxiliary
Diagnostic system also includes D/A converter module, and described ultrasonic probe also includes one for adjusting speaker intrinsic inductance
Magnetic induction actuator, described D/A converter module connects main control module and magnetic induction actuator, for by master control mould
The digital signal of block output is transformed into AC signal again and exports to magnetic induction tune after being converted to analog voltage signal
Section device, described magnetic induction actuator is used for adjusting speaker intrinsic inductance and then auxiliary adjustment low-frequency mechanical vibrations width
Degree.
In ultra sonic imaging assistant diagnosis system of the present invention, described ultrasonic transducer using multilamellar shake unit scanning knot
Structure, described main control module makes ultrasound beamformer focus on in-house certain point by the time delay controlling every Lu Zhenyuan transmitting, and
Main control module is compressed to ultrasonic excitation signals encoding using barker and golay encoding mechanism.
In ultra sonic imaging assistant diagnosis system of the present invention, it is pre- that described signal processing module includes being sequentially connected
Process circuit, magnifier, filter circuit, demodulator circuit, ad Acquisition Circuit, described pretreatment circuit is also connected with impedance
Join actuator, described ad Acquisition Circuit connects main control module.
Implement ultrasonic probe and the ultra sonic imaging assistant diagnosis system of the present invention, have the advantages that the present invention
Probe not only possess the ultrasonic tissue reconstruct imaging function of routine, and Low-Frequency Mechanical can be carried out by electroacoustic transducer and shake
Dynamic, low-frequency mechanical vibrations are delivered to tissue by body, thus forming shearing wave in tissue, shearing wave can be by ultrasonic transduction
Device receives and then exports to ultrasonic control system to carry out tissue hardness analysis, so realizes lesion nature is differentiated；
Further, in the probe of the present invention, by setting up coil on the t ferrum of speaker, by control coil
Size of current and direction are realized adjusting speaker intrinsic inductance, and then auxiliary adjustment low-frequency mechanical vibrations amplitude；Raising one's voice
Between the magnet of device and impedance matching actuator, setting elastic component, to reduce the impact to ultrasonic transducer for the remained shock, improves to tissue
The certainty of measurement of hardness；
Further, in the present invention, ultrasonic transducer is shaken first Scan Architecture using multilamellar, the time delay of every Lu Zhenyuan transmitting
Make ultrasound beamformer focus on in-house certain point, realize the precise positioning to focus；And main control module adopt barker and
Golay encoding mechanism is compressed to ultrasonic excitation signals encoding, so that the ultrasound wave of ultra sonic imaging assistant diagnosis system
Penetrance is higher, realizes the ultra sonic imaging to deeper tissue.
Brief description
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the preferred embodiment of ultrasonic probe of the present invention；
Fig. 2 is the structural representation of electroacoustic transducer in Fig. 1；
Fig. 3 be ultrasonic probe of the present invention preferred embodiment in ultrasonic transducer first distribution schematic diagram that shakes；
Fig. 4 is the structural representation of ultra sonic imaging assistant diagnosis system of the present invention.
Specific embodiment
In order to be more clearly understood to the technical characteristic of the present invention, purpose and effect, now comparison accompanying drawing describes in detail
The specific embodiment of the present invention.
The ultrasonic probe of the present invention includes having necessarily elasticity and end is used for body with contact tissue and logical sets
Have a handle of cable, be disposed with vertically the described internal end with contact tissue from body ultrasonic transducer and
The impedance matching actuator of ultrasonic transducer electrical connection, electroacoustic transducer, described body end is extended in the end of ultrasonic transducer
Portion for contact tissue, described electroacoustic transducer, impedance matching actuator pass through respectively cable in handle with outside
Ultrasonic control system connects；
Described electroacoustic transducer is used for receiving the mechanical vibratory excitation signal of ultrasonic control system output to carry out low frequency machine
Tool vibrates, and described low-frequency mechanical vibrations are delivered to tissue by described body；Described ultrasonic transducer is used for controlling system ultrasonic
Launch ultrasound wave under the control of system, and receive produced by ultrasound echo signal and the tissue medium and low frequency mechanical vibration in tissue
Shearing wave signal, and the signal of reception is exported by impedance matching actuator carry out tissue hardness to ultrasonic control system and divide
Analysis and reconstructed tissue imaging.
The probe of the present invention not only possesses the ultrasonic tissue reconstruct imaging function of routine, and can pass through electroacoustic transducer
Carry out low-frequency mechanical vibrations, low-frequency mechanical vibrations are delivered to tissue by body, thus forming shearing wave, shearing wave in tissue
Can be received by ultrasonic transducer and then export to ultrasonic control system to carry out tissue hardness analysis, so realize to neuropathic
Matter is differentiated.
It is the structural representation of the preferred embodiment of ultrasonic probe of the present invention with reference to Fig. 1.Fig. 2 is electroacoustic transducer in Fig. 1
Structural representation.
In preferred embodiment, described electroacoustic transducer is speaker, speaker, impedance matching actuator, ultrasonic transducer
Form a whole, for example, pass through an inner shell by this three thin consolidation together, handle is interspersed in after passing through solid wood structure 1 again
On inner shell, cable is entered in inner shell and is connected with speaker, impedance matching actuator.Described body is preferably the solid wood structure of tubular
1, solid wood structure 1 outer tight set one shell 2, shell 2 is mainly attractive in appearance and dust-proof.In Fig. 1,4 expression handles, the 3 expression communications cables.
In conjunction with Fig. 2, speaker includes train wheel bridge 10, positioned at the frame 11 of train wheel bridge 10 top, below train wheel bridge 10
Antimagnetic hood 12, fix a magnet 13 in Antimagnetic hood 12, in magnet 13, be provided with the t ferrum for enhancing magnet 13 magnetic
14, it is provided with cone basin 15, voice coil loudspeaker voice coil 16, dust cap 17 in frame 11.During speaker operation, voice coil loudspeaker voice coil 16 vibration drives connected
Cone basin 15, community's motion of dust cap 17, frame 11, magnet 13, t ferrum 14, Antimagnetic hood 12 are static part.
The structure of existing speaker is made full use of, by the opening of the cone basin 15 of speaker towards solid wood in preferred embodiment
One end away from tissue of structure 1, and bore basin 15 pass through a push rod (not shown) with certain degree of hardness and solid wood structure 1 or
Person's shell 2 connects, handle 4 non-contactly wear successively shell 2, after solid wood structure 1 with speaker housings (for example frame 11 or
Antimagnetic hood 12) or ultrasonic transducer shell be fixedly connected, in speaker with the cone voice coil loudspeaker voice coil 16 that is connected of basin 15 by handle 4
Cable 3 is connected with ultrasonic control system.
So, when voice coil loudspeaker voice coil 16 vibrates, the community with mantle basin 15, push rod, solid wood structure 1/ shell 2 carries out low frequency machine
Tool vibrates, and solid wood structure 1 passes to tissue low-frequency mechanical vibrations again, and then forms shearing wave in the tissue, according to shearing wave
Speed can obtain the hardness information of tissue, you can obtain the pathological characteristics of tissue.
It is understood that the transmission of vibration is not limited to this, as long as the low-frequency mechanical vibrations of speaker can be transmitted
To solid wood structure 1/ shell 2 community all within protection scope of the present invention.For example, it is also possible to dust cap 17 is replaced with
Pass through plastics push rod and cage connection after plastic material, can also be the connector of other shapes however it is not limited to push rod.
Preferably, described ultrasonic probe also includes one and is used for adjusting speaker intrinsic inductance and then auxiliary adjustment is low
The magnetic induction actuator of frequency mechanical vibration amplitude, described magnetic induction actuator passes through cable and outside in handle
Ultrasonic control system connects.
For example, in specific embodiment, described magnetic induction actuator is the t in a magnet 13 being wound on speaker
Coil (not shown) on ferrum 14, the size and Orientation that ultrasonic control system passes through electric current in control coil is adjusted in speaker
Magnetic induction.
Preferably, described probe also includes the use being arranged between the magnet 13 of speaker and impedance matching actuator
In the elastic component reducing remained shock.Elastic component passes through to reduce the impact to ultrasonic transducer for the remained shock, improves the measurement to tissue hardness
Precision.In specific embodiment, elastic component can select spring.
With reference to Fig. 3 be ultrasonic probe of the present invention preferred embodiment in ultrasonic transducer first distribution schematic diagram that shakes.Preferably
, described ultrasonic transducer is shaken first Scan Architecture using multilamellar, described main control module 400 pass through to control every Lu Zhenyuan transmitting when
Prolong and make ultrasound beamformer focus on in-house certain point.Every layer of unit of shaking forms planar circular structure.In preferred embodiment, first
1 unit of shaking of layer, 8 units of shaking of the second layer, 16 units of shaking of third layer, * 8 units of shaking of n-th layer (n-1), the like.Shaken by every road
Unit transmitting time delay make ultrasound beamformer focus on in-house certain point (this point be each Lu Zhenyuan signal reach simultaneously one
Point, signal is the strongest), you can realize the precise positioning to focus.
Accordingly, the invention also discloses a kind of ultra sonic imaging assistant diagnosis system.With reference to Fig. 4, it is the ultrasonic one-tenth of the present invention
Structural representation as assistant diagnosis system.The ultra sonic imaging assistant diagnosis system of the present invention, including described ultrasonic probe and
Ultrasonic control system.Wherein, described ultrasonic control system includes main control module 400, mechanical vibratory excitation signal drive module
100th, ultrasonic excitation signals produce and first control module 200 of shaking.Wherein:
Mechanical vibratory excitation signal drive module 100, connects described main control module 400 and electroacoustic transducer, for leading
The mechanical vibratory excitation signal of control module 400 output exports to electroacoustic transducer after being amplified；
Ultrasonic excitation signals produce and first control module 200 of shaking, and connect described main control module 400 and impedance matching is adjusted
Device, after the ultrasonic excitation signals for exporting to main control module 400 are processed, triggering ultrasonic transducer transmitting ultrasound wave arrives
Tissue.In specific embodiment, ultrasonic excitation signals produce and first control module 200 of shaking carries out power amplification using el7222,
Then impedance matching is realized by transformator.
Signal processing module 300, connects described main control module 400 and impedance matching actuator, for ultrasonic transducer
The signal receiving is delivered to main control module 400 and carries out tissue hardness analysis and reconstructed tissue imaging after being processed.
Main control module 400, including fpga, embedded system, display module, button, data memory module, peripheral interface,
Power management module.Produce pulse signal by fpga to vibrate come controlling loudspeaker, so that ultrasonic probe shell and solid wood knot
Structure vibrates and produces shearing wave；In addition, fpga carries out barker and golay coding to every road ultrasonic excitation signals, excite super
Sonic transducer industry is crossed ultrasonic coupling agent and is sent multiplex ultrasonic to biological tissue, fpga pass through to control every Lu Zhenyuan transmitting when
Prolong and make ultrasound beamformer focus on in-house certain point；The fpga multi-path echo signal that receives of unit that also multichannel shaken enters line number
Word synthesizes, and extracts shearing wave spread speed in the tissue, and then obtain the hardness information organized from echo-signal, this
Outward, ultra sonic imaging is realized by the multiple demodulation ultrasonic echo information that receives, and then reconstruct organization internal organizational structure, lead to simultaneously
Cross embedded system data to be stored and shows, for example, can be shown with different colors for different hardness.
The fpga of the present invention selects altera company of U.S. apex20k series epf20k300eqc240-1, gate array resource
Many, there are 152 i/o interfaces, and compatible multiple voltage input, it is programmed control using vhdl language.
Wherein, described mechanical vibratory excitation signal drive module 100 includes being sequentially connected: is connected with main control module 400
D/A converter module, the power amplifier module that is connected with electroacoustic transducer of band filter, D/A converter module is used for leading
The digital signal of control module 400 output is transformed into AC signal, band filter after being converted to analog voltage signal again
For the AC signal of reception being carried out export to power amplifier module, power amplification mould after the Filtering Processing of 5hz-1khz
Block is used for carrying out exporting to electroacoustic transducer after power amplification by filtered AC signal.
In one specific example, the dac908e that D/A converter module is selected, using the filter of the band logical with a width of 5hz-1khz
Ripple device filtering, the stk084 that power amplifier module adopts.By fpga inquire about sine table and using timing by way of control
Dac908e produces the low frequency signal of certain frequency as mechanical vibratory excitation signal, and detailed process is as follows: by fpga pair
Dac908e carries out digital-to-analogue conversion, produces the low frequency signal (be adjusted by fpga, frequency < 1khz) of a frequency-adjustable, then leads to
Cross a band filter and bandpass filtering is carried out to the low frequency signal producing, be then passed through a power amplifier low to produce
Frequency signal is amplified, the voice coil loudspeaker voice coil 16 of the low frequency signal drive the speaker after amplification, thus causing the cone basin 15 of speaker, voice coil loudspeaker voice coil
16th, dust cap 17 and the push rod connecting together, solid wood structure 1 and shell 2 make low-frequency vibration, and concrete frequency of vibration is entered by fpga
Row controls.
Wherein, described signal processing module 300 may be referred to the principle of existing ultrasonic image-forming system.For example, a tool
In body embodiment, pretreatment circuit that signal processing module 300 includes being sequentially connected, magnifier, filter circuit, demodulation
Circuit, ad Acquisition Circuit, described pretreatment circuit is also connected with impedance matching actuator, and described ad Acquisition Circuit connects main control module
400.Ad Acquisition Circuit of the present invention to be realized to ultrasound echo signal as 8 adc acquisition chips using adc10321civt
Analog digital conversion, each first corresponding passage that shakes adopts an adc chip, and the digital output end of Bing Jiang 25 road adc chip always passes through
Lane controller is attached with fpga.
Preferably, described assistant diagnosis system also includes D/A converter module, and described D/A converter module connects master control mould
Block 400 and speaker intrinsic inductance actuator, the digital signal for exporting main control module 400 is converted to analog voltage
It is transformed into AC signal after signal again to export to magnetic induction actuator, magnetic induction actuator is adjusted again raises one's voice
Device intrinsic inductance and then auxiliary adjustment low-frequency mechanical vibrations amplitude.In one specific embodiment, magnetic induction is adjusted
Device adopts 8 dac908e as D/A converter module.
Further, in the present invention, ultrasonic transducer is shaken first Scan Architecture using multilamellar, the time delay of every Lu Zhenyuan transmitting
Make ultrasound beamformer focus on in-house certain point, realize the precise positioning to focus；And main control module 400 adopts barker
Ultrasonic excitation signals are compressed encode with golay encoding mechanism, so that ultra sonic imaging assistant diagnosis system is ultrasonic
Ripple penetrance is higher, realizes the ultra sonic imaging to deeper tissue.
In sum, implement ultrasonic probe and the ultra sonic imaging assistant diagnosis system of the present invention, there is following beneficial effect
Really: the probe of the present invention not only possesses the ultrasonic tissue reconstruct imaging function of routine, and can be carried out by electroacoustic transducer
Low-frequency mechanical vibrations, low-frequency mechanical vibrations are delivered to tissue by body, thus forming shearing wave in tissue, shearing wave is permissible
Received and then exported by ultrasonic transducer to ultrasonic control system to carry out tissue hardness analysis, so realize lesion nature is entered
Row differentiates；Further, in the probe of the present invention, by setting up coil on the t ferrum of speaker, by the electricity in control coil
Stream size and Orientation is realized adjusting speaker intrinsic inductance, and then auxiliary adjustment low-frequency mechanical vibrations amplitude；In speaker
Magnet and impedance matching actuator between setting elastic component to reduce the impact to ultrasonic transducer for the remained shock, improve hard to organizing
The certainty of measurement of degree；Further, in the present invention, ultrasonic transducer is shaken first Scan Architecture using multilamellar, every Lu Zhenyuan transmitting
Time delay makes ultrasound beamformer focus on in-house certain point, realizes the precise positioning to focus；And main control module adopts
Barker and golay encoding mechanism is compressed to ultrasonic excitation signals encoding, so that ultra sonic imaging assistant diagnosis system
Ultrasound wave penetrance higher, realize ultra sonic imaging to deeper tissue.
Above in conjunction with accompanying drawing, embodiments of the invention are described, but the invention is not limited in above-mentioned concrete
Embodiment, above-mentioned specific embodiment is only schematically, rather than restricted, those of ordinary skill in the art
Under the enlightenment of the present invention, in the case of without departing from present inventive concept and scope of the claimed protection, also can make a lot
Form, these belong within the protection of the present invention.
Claims (10)
1. a kind of ultrasonic probe it is characterised in that include there is necessarily elasticity and end be used for the body of contact tissue with
And lead to the handle being provided with cable, it is disposed with ultrasonic transduction vertically the described internal end from body and contact tissue
Impedance matching actuator that device is electrically connected with ultrasonic transducer, electroacoustic transducer, the end of ultrasonic transducer extends described
Body end portion for contact tissue, described electroacoustic transducer, impedance matching actuator pass through respectively cable in handle with outer
The ultrasonic control system in portion connects；
The mechanical vibratory excitation signal that described electroacoustic transducer is used for receiving ultrasonic control system output is shaken with carrying out Low-Frequency Mechanical
Dynamic, described low-frequency mechanical vibrations are delivered to tissue by described body；Described ultrasonic transducer is used in ultrasonic control system
Control lower transmitting ultrasound wave, and receive the ultrasound echo signal in tissue and shearing produced by tissue medium and low frequency mechanical vibration
Ripple signal, and by the signal of reception by impedance matching actuator export to ultrasonic control system carry out tissue hardness analysis and
Reconstructed tissue is imaged.
2. ultrasonic probe according to claim 1 it is characterised in that described body is the solid wood structure of tubular, tie by solid wood
Tight set one shell outside structure, described electroacoustic transducer is speaker, and the opening of the cone basin of speaker towards solid wood structure away from
One end of tissue, and bore basin by a connector with certain degree of hardness and solid wood structure or cage connection, described handle
Non-contactly wear shell successively, be fixedly connected with speaker housings or ultrasonic transducer shell, in speaker after solid wood structure
Be connected with ultrasonic control system by the cable in handle with the cone voice coil loudspeaker voice coil that is connected of basin.
3. ultrasonic probe according to claim 2 is it is characterised in that described ultrasonic probe also includes one raises for regulation
Sound device intrinsic inductance and then the magnetic induction actuator of auxiliary adjustment low-frequency mechanical vibrations amplitude, described magnetic induction
The cable that actuator passes through in handle is connected with outside ultrasonic control system.
4. ultrasonic probe according to claim 3 is it is characterised in that described magnetic induction actuator is wound on for one raises
The coil on t ferrum in the magnet of sound device, ultrasonic control system is adjusted by the size and Orientation of electric current in control coil and raises
Sound device intrinsic inductance.
5. ultrasonic probe according to claim 2 is arranged on speaker it is characterised in that described probe also includes one
The elastic component for reducing remained shock between magnet and impedance matching actuator.
6. a kind of ultra sonic imaging assistant diagnosis system is it is characterised in that include ultrasonic probe as claimed in claim 1 and ultrasonic
Control system, described ultrasonic control system includes:
Main control module；
Mechanical vibratory excitation signal drive module, the mechanical vibratory excitation signal for exporting main control module is defeated after being amplified
Go out to electroacoustic transducer；
Ultrasonic excitation signals produce and first control module of shaking, at ultrasonic excitation signals that main control module is exported
After reason, triggering ultrasonic transducer transmitting ultrasound wave is to tissue；
Signal processing module, carries out tissue firmly for being delivered to main control module after the signal that ultrasonic transducer receives is processed
Degree analysis and reconstructed tissue imaging.
7. ultra sonic imaging assistant diagnosis system according to claim 6 is it is characterised in that described mechanical vibratory excitation signal
Drive module includes D/A converter module, band filter, power amplifier module, and D/A converter module is used for main control module is defeated
The digital signal going out is transformed into AC signal after being converted to analog voltage signal again, and band filter is used for reception
AC signal exports after carrying out the Filtering Processing of 5hz-1khz to power amplifier module, and power amplifier module is used for filtering
AC signal afterwards exports to electroacoustic transducer after carrying out power amplification.
8. ultra sonic imaging assistant diagnosis system according to claim 6 is it is characterised in that described electroacoustic transducer is to raise one's voice
Device, described assistant diagnosis system also includes D/A converter module, and described ultrasonic probe also includes one and is used for adjusting in speaker
The magnetic induction actuator of magnetic induction, the digital signal that described D/A converter module is used for exporting main control module is changed
Export to magnetic induction actuator for being transformed into AC signal after analog voltage signal again, described magnetic induction is adjusted
Section device is used for adjusting speaker intrinsic inductance and then auxiliary adjustment low-frequency mechanical vibrations amplitude.
9. ultra sonic imaging assistant diagnosis system according to claim 6 is it is characterised in that described ultrasonic transducer is using many
Layer shakes first Scan Architecture, and described main control module passes through to control the time delay of every Lu Zhenyuan transmitting to make ultrasound beamformer focus on tissue interior
Certain point, and main control module using barker and golay encoding mechanism ultrasonic excitation signals are compressed encode.
10. ultra sonic imaging assistant diagnosis system according to claim 6 is it is characterised in that described signal processing module bag
Include pretreatment circuit, magnifier, filter circuit, demodulator circuit, ad Acquisition Circuit.
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| CN108095763A (en) * | 2018-01-18 | 2018-06-01 | 北京索瑞特医学技术有限公司 | Combined probe and measuring system |
| CN109632970A (en) * | 2018-11-16 | 2019-04-16 | 中聚科技股份有限公司 | It is a kind of for encode ultrasound single channel ultrasound pulse transmission and echo amplification system |
| WO2019127117A1 (en) * | 2017-12-27 | 2019-07-04 | 深圳迈瑞生物医疗电子股份有限公司 | Ultrasonic probe |
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| CN112986399A (en) * | 2021-03-15 | 2021-06-18 | 南昌航空大学 | Electromagnetic ultrasonic SH (shear) guided wave transducer and online detection system and method |
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