A kind of bowl-shape flexible 3 D array ultrasonic probeTechnical field
The present invention relates to medical lesion detection field, and in particular to a kind of bowl-shape three-dimensional battle array of many composite crystals of flexible utilizationThe probe apparatus of row ultrasonic technology auxiliary detection superficial (internal) lesion.
Background technology
Lesion, which is accurately positioned, typically uses preoperative imaging localization method, such as ultrasound B imagings, X-ray detection, DopplerTechnology etc., they are utilized always as preoperative important medical diagnostic method, and its major function is to determine diseased region and propertyMatter etc..Doctor designs operative incision, excision disease with the experience of oneself generally according only to the lesion information shown in iconographyBecome.Preoperative and often to need to do big otch because that specify the accurate location of focus and sometimes inaccurate because positioning, having in art needsProlonged incison adds cortex to detect the possibility of number of times again.
With the application of the continuous progress, particularly fujinon electronic video endoscope of technology, solve being accurately positioned for lesions position and askTopic.It can enter natural hole of the ultra-fine microscope through human body, or the small otch that underwent operative is done in human body, most ZhongdaoUp to body lesion locations, the cause of disease can be quickly found out, and lesion locations are accurately positioned.But the technology has 2 points of deficienciesPlace：
First：Need small otch to enter endoscope in human body to check, although be minimally invasive, but can not realize to lesion positionThe lossless decomposition put；
Second：For superficial foci, the technology seems that checking process and equipment excessively complicated, cost are high；
3rd：Human body surface is uneven, and conventional detection apparatus can not fit well detects surface.
Exploitation is a kind of simple to operate, for detecting that the apparatus and method of superficial (internal) lesion are just particularly important.
The content of the invention
It is an object of the invention to provide a kind of bowl-shape flexible 3 D array probe for breast cancer diagnosis imaging, haveSoft shell, the advantage such as positioning and quantitative is accurate, equipment is simple.
In order to solve the problems existing in background technology, the present invention is to use following technical scheme：One kind bowl-shape flexible threeArray probe is tieed up, available for breast cancer diagnosis etc., it includes bowl-shape flexible shell, pliability composite piezoelectric chip, couplant noteEnter the composition such as device and connecting line, the flexible body that can more fit detection surface.It is soft detection with reference to phase array focusing ruleBody provides a kind of probe of the quantitative three-dimensional imaging of high accuracy positioning.
As a further improvement on the present invention；Ultrasonic transducer using Pei's Fibonacci helical row, much answer by array element arraySynthetic chip architecture, is conducive to carrying out imaging to the signal received.
As a further improvement on the present invention；Described ultrasonic transducer is made up of 3-tier architecture, is topmost backing resistanceBuddhist nun, is a kind of flexible material；Intermediate layer is had the composite crystal 2 of pliability by even numbernComposition, it has deformable, pliableBent the features such as；Orlop is the coupling layer with direct skin contact, it may have flexible characteristics, while requiring that its acoustic impedance values isThe geometrical mean of composite crystal acoustic impedance and raw body acoustic impedance.
As a further improvement on the present invention；Each array element uses independent backing and matching layer, it is to avoid lateral cross talk, purificationVibrating mode, improves signal to noise ratio.
As a further improvement on the present invention；Described composite crystal is 1-3 type composite wafers, in well cuttingInjection injection rubber resin, makes 1-3 composite crystals not only have pliability in PZT grooves, also can absorb oscillation crosswise, purificationVibration mode, with higher sensitivity and signal to noise ratio.
As a further improvement on the present invention；Described a kind of bowl-shape flexible 3 D array probe, it is characterised in that eachArray element backing is all embedded with optical fiber, in favor of phase array focusing rule computing when provide array element accurate location.
As a further improvement on the present invention；Described a kind of bowl-shape flexible 3 D array probe, it is characterised in that both may be usedUltrasonic wave can be received with independent transmission for phased array supersonic diagnosis three-dimensional imaging, i.e. each array element；Light ultrasound is can also be used for examineDisconnected three-dimensional imaging, i.e. infrared emitting laser give detection body, by each array element individual reception ultrasonic wave.
A kind of bowl-shape flexible 3 D array probe, the detailed process of work is as follows：
By bowl formula probe placement at sufferer, couplant is injected from couplant main-inlet, by transmitting and receiving module to againPiezoelectric chip transmitting excitation pulse is closed, so that piezoelectric chip produces ultrasonic wave and launched to organization internal, ultrasonic wave passes throughInterior tissue receive reflection after again by composite piezoelectric wafer receipt and change into electric signal transmission to transmitting and receiving module carry out afterThe data processing of phase.
After adopting the above technical scheme, the invention has the advantages that：
A) registration：Echo data is received using multi-wafer, can more add accurate lesion position；
B) advanced technology：Using many array element array composite crystal transducers, after being substantially increased based on synthetic aperture techniqueThe resolution ratio of phase composograph；
C) high, the longitudinal energy of sensitivity is big：Rubber resin material makes 1-3 composite crystals not only as condensate fillerWith pliability, oscillation crosswise is also can absorb, vibration mode is purified, with higher sensitivity and signal to noise ratio.
D) bandwidth is wider：Increase damping layer to absorb the vibration at the back side, and be used as acoustic matching layer to reduce by resinThe periodicity of ultrasonic wave, data processing is more accurate.
E) this scheme device is simple, practical, and treatment time is short etc., is provided simultaneously with real time monitoring function.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existingThere is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only thisSome embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be withOther accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the ultrasonic transducer of device provided by the present invention；
Fig. 2 is Fig. 1 flexible structure cross-sectional structure schematic diagram；
The device composite crystal structure schematic diagram that Fig. 3 is provided by invention；
Fig. 4 is that device composite crystal provided by the present invention receives waveform and bandwidth schematic diagram；
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing and specific implementationMode, the present invention will be described in further detail.It should be appreciated that embodiment described herein is only to explain thisInvention, is not intended to limit the present invention.
Referring to Fig. 1, present embodiment uses following technical scheme：A kind of bowl-shape flexible 3 D array probe, willComposite crystal 1 is installed between bowl-shape flexible structure 2 and substrate 7 according to Pei's Fibonacci helix, and flexible structure upper end is equipped with couplingMixture inlet 3, during work by bowl formula probe placement at sufferer, couplant 4, composite piezoelectric are injected from couplant inlet 3Chip 1 is excited generation ultrasonic wave and to the internal emission of tissue 5 by pulse current, and ultrasonic wave receives anti-by tissueAfter penetrating again by composite piezoelectric wafer receipt and change into electric signal transmission to transmitting and receiving module carry out the later stage data processing.IfThere are pathological tissues 6 in tissue, then it can be different with normal structure for the echo-signal of ultrasonic wave, utilizes thisPlanting change can aid in detecting superficial foci.
Referring to Fig. 2, described ultrasonic transducer ultrasonic transducer is made up of 3-tier architecture, it is topmost backing damping 8,It is a kind of flexible material；Intermediate layer is had the composite crystal 2 of pliability by even numbernComposition, it has deformable, flexible etc.Feature；Orlop is the coupling layer 9 with direct skin contact, it may have flexible characteristics, while each array element backing is embedded withOptical fiber 10, the imaging to diagnostic result provides the accurate location of array element.
Referring to Fig. 3, rubber resin material is injected in injection in PZT (rectangular piezoelectric ceramic post) 11 grooves of well cutting12 bondings, the features such as not only making it have deformable, flexible can also make 1-3 composite crystals have pliability, can absorb horizontal strokeTo vibration, vibration mode is purified, with higher sensitivity and signal to noise ratio
Referring to Fig. 4, the addition of coupling layer and damping layer can reduce the remained shock of ultrasonic echo signal, so as to improve spyThe bandwidth of head.
Multiple array elements of ultrasonic transducer are arranged by Pei's Fibonacci helix, and altogether 2nRoad array element composition supersonic arrayTransducer, according to order of delay, each array element launches a ultrasonic wave, and other array elements include transmitting array element will receive in itselfSignal, memory will record and store 2nRoad signal.Finally, using bore diameter synthesizing technology to extracting 2nRoad signal is carried out after dataPhase is handled, and reflects the image of the information such as pathological tissues accurate location and size.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er QieIn the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matterFrom the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended powerProfit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by fallingChange is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrappedContaining an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art shouldUsing specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the artIt may be appreciated other embodiment.