CN102743192A - Annular three-dimensional ultrasonic probe for endoscopy and preparation method thereof - Google Patents
Annular three-dimensional ultrasonic probe for endoscopy and preparation method thereof Download PDFInfo
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- CN102743192A CN102743192A CN2012102298567A CN201210229856A CN102743192A CN 102743192 A CN102743192 A CN 102743192A CN 2012102298567 A CN2012102298567 A CN 2012102298567A CN 201210229856 A CN201210229856 A CN 201210229856A CN 102743192 A CN102743192 A CN 102743192A
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Abstract
The invention discloses a preparation method of an annular three-dimensional ultrasonic probe for an endoscopy. The preparation method comprises the steps of: (1) preparing a piezoelectric cylinder; (2) fixedly sleeving an insulating rod and an insulating cylinder on an inner hole and the periphery of the piezoelectric cylinder respectively, cutting out a plurality of axial grooves on the peripheries of the insulating rod and the insulating cylinder; (3) cutting the piezoelectric cylinder, namely cutting the insulating cylinder and the piezoelectric cylinder between the grooves along the circumference on the periphery of the insulating cylinder, cutting the piezoelectric cylinder into a plurality of piezoelectric units, wherein a gap exists between the piezoelectric units; finally encapsulating to obtain the three-dimensional ultrasonic probe. The invention also discloses the annular three-dimensional ultrasonic probe for the endoscopy. According to the invention, the problem that each array element cannot be concentrically and irregularly arranged at unequal intervals caused by a traditional method of fabricating all array elements and then encircling into a loop is solved. Meanwhile, the coaxial cable signal wires are arranged by the groove, and the problem of complicated operation in a traditional wiring process is solved.
Description
Technical field
The invention belongs to the medical ultrasound image apparatus field, be specifically related to a kind of ring-type three dimensional ultrasound probe through scope and preparation method thereof.
Background technology
Play an important role in clinical medicine is used through scope (gastroscope, peritoneoscope, colonoscope) ultrasonic technique always.Compare with external supersonic, can avoid subcutaneous fat, enteric cavity gas and skeleton etc. to hyperacoustic influence and interference through EUS.
In recent years, the growth momentum of three-D ultrasonic technology is swift and violent, and merging with three-D ultrasonic and through EUS has become developing direction.Both can improve the resolution and the third dimension of ultrasonoscopy through the scope three-D ultrasonic, but Enhanced Imaging real-time also can provide real-time navigation in operation for the doctor.
The preparation of two dimensional ultrasound array is that the important ring in scope three-D ultrasonic technology also is the difficult point place.The ring-type two-dimensional array of surveying forward; Not only can present real-time three-dimensional ultrasound pattern; And because its special hollow structure, also can organically incorporate optic probe or insert operating theater instruments and be convenient to therefore have a extensive future through the carrying out of endoscope minimally invasive operation.
At present, the method for preparing of existing two dimensional ultrasound array is generally and makes array element one by one earlier, then manual being arranged in the form of a ring on cylinder.The method trouble is consuming time, the difficult array element equal and opposite in direction of accomplishing made, and quality is uneven, is difficult to large-scale production and application, and is difficult to guarantee that each array element is concentric, neat, equidistantly arranges, and this will influence the performance of prepared probe.
Summary of the invention
One of the object of the invention is to provide a kind of method for preparing that is used for through the ring-type three dimensional ultrasound probe of scope; Adopt directly the mode that cuts out a plurality of piezoelectricity array elements from piezoelectric ceramics annulus or piezoelectric monocrystal annulus; Solved that traditional approach adopts make earlier all array elements again around each array element that method caused of lopping can't be with one heart, not neat, problem that unequal-interval is arranged; Simultaneously; Employing utilizes the gear-like grid coaxial cable holding wire of arranging, and cuts the mode that in the process of array element holding wire electricity is broken off subsequently, has solved in the traditional wired process problem that array element and holding wire are one by one gone the complex operations of spot welding.
Realize that the technical scheme that the object of the invention adopted is following:
A kind of method for preparing that is used for through the ring-type three dimensional ultrasound probe of scope is characterized in that, comprises the steps:
At first, preparation piezoelectricity cylinder: in cylindric piezoelectric surfaces externally and internally plated electrode and polarization, perfusion back lining materials and matching layer material and processing cutting boring on the piezoelectric after polarization is handled again forms the piezoelectricity cylinder.
Secondly, processing insulating bar and insulating concrete cylinder are fixed insulating bar, piezoelectricity cylinder and insulating concrete cylinder from inside to outside successively, cut out gear-like grid groove vertically and in groove, arrange the cable signal line in the insulating bar butt end outside and the insulating concrete cylinder outside.
At last, insulating bar is fixed on the rotary apparatus, cuts out the ring-type two-dimensional array, insert the material of decoupling, evacuation solidifies, and bores aerial heart sticking plaster;
The encapsulation above-mentioned material can obtain through scope ring-type three dimensional ultrasound probe.
As further improvement of the present invention, when the processing insulating bar, make the thick end of insulating bar one end thin, make thin end external diameter consistent with cylindric piezoelectric internal diameter, butt end is convenient to be fixed on the rotary apparatus.During the processing insulating concrete cylinder, make the insulating concrete cylinder internal diameter consistent with cylindric piezoelectric external diameter.
Two of the object of the invention is to provide a kind of ring-type three dimensional ultrasound probe that is used for through scope, and it mainly comprises:
Some N of concentric and equidistant arrangement have conduction acoustic impedance matching layer piezoelectricity array element, and piezoelectricity array element can be selected various piezoelectric ceramics and monocrystalline piezoelectric material for use, and the number N of piezoelectricity array element can be 32,64,128 even more;
Each piezoelectricity array element all has the back lining materials of conduction, and back lining materials conducting and in order to absorb piezoelectricity array element ultrasonic waves transmitted backward each other improves the imaging resolution of probe;
The material of decoupling between each piezoelectricity array element is in order to reduce the string wave action between the piezoelectricity array element;
The coaxial cable holding wire that links to each other with each array element, heart yearn is communicated with matching layer, and ground wire links to each other with back lining materials, in order to transmit the driving voltage signal and to receive the echo voltage signal;
With coaxial cable holding wire and cutting localized axial notch during array element of arranging; Positioning action during in order to arrangement coaxial wire, the heart yearn of separating coaxial wire and ground wire and cutting array element; The number of its gear is equal to the number of piezoelectricity array element, and all gears are accomplished equidistant and concentric arrangement.
The present invention directly cuts out a plurality of piezoelectricity array elements from piezoelectric ceramics annulus or piezoelectric monocrystal annulus; Replace general at present adopt make all array elements again around the method for lopping, each array element of having avoided being caused in the process that a plurality of piezoelectricity array element manual arrangement are cylindrical problem such as can't concentric, neat, equidistantly arrange.Utilize the gear-like ring-type grid coaxial cable holding wire of arranging; Concentric and each array element of equally spaced alignment of all holding wires is arranged; Only need whole holding wires are connected piezoelectric and each holding wire electricity is broken off, save that array element and holding wire are gone spot weld operation one by one.Rotary apparatus combines with the ingenious of joint line cutting machine, can obtain same each array element uniformly-spaced of equal size through rotating accurate Cutting Control.Therefore, this kind method has been optimized technical process, has improved development efficient, practiced thrift time cost, and is effectively simple.
Description of drawings
Fig. 1 is of the present invention through scope ring-type three dimensional ultrasound probe structural representation.
Fig. 2 is the sectional view through scope ring-type three dimensional ultrasound probe of the present invention.
Fig. 3 is in order to device (use of joint line cutting machine) fixing and rotation ring-type three-dimensional ultrasonic probe body and ring-type grid main body.
Fig. 4 is in order to coaxial cable holding wire and cutting localized gear-like ring-type grid sketch map during array element of arranging.
Fig. 5 is through the flow chart of the method for preparing of scope ring-type three dimensional ultrasound probe.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further explain, but the foregoing description only is exemplary, does not constitute qualification of the present invention.
A kind of method of production through scope ring-type three dimensional ultrasound probe of present embodiment comprises following concrete steps:
(1) Design and Machining and attenuate piezoelectric, the lower surface plated electrode and the processing that polarizes above that, selected piezoelectric can be piezoelectric ceramics and piezoelectric monocrystal etc.
(2) perfusion back lining materials and matching layer material and processing are thinned to desired thickness on the piezoelectric end face after polarization is handled, and process the cutting burr hole then and form cylindric piezoelectric (piezoelectricity cylinder).
(3) processing insulating bar and insulating concrete cylinder, and the three is fixing successively.Preferably the thick end of an end is thin for the insulating bar of being processed, and a thin end size is consistent with the internal diameter of cylindric piezoelectric, and a thick end is used for fixing on rotary apparatus.The internal diameter of the insulating concrete cylinder of being processed is consistent with the external diameter of cylindric piezoelectric, and the end consistent size that the external diameter of insulating cylinder and insulating bar are thick is like Fig. 4; Wherein 401 is insulating concrete cylinder; 402 and 403 is insulating bar, and wherein 402 is the butt end of insulating bar, and 403 is the thin end of insulating bar.
(4) cut out gear-like cloth line groove and wiring.Insulating concrete cylinder 401 is enclosed within outside the cylindric piezoelectric, insulating bar is inserted in the cylindric piezoelectrics, and the three is fixed; Guarantee three coaxial and piezoelectric matching layer and insulating bar and insulating concrete cylinder end face; Outside the insulating bar butt end outside and insulating concrete cylinder, with wire cutting machine vertically line cut out groove, each groove is seen on end face; Be and circumferentially be evenly distributed on the insulating bar butt end outside and the insulating concrete cylinder outer peripheral face similar gear-like grid.Its further groove preferably connects both ends of the surface, so that wiring.The groove number is with identical through the array element number of scope three dimensional ultrasound probe, in gear-like grid groove, arrange with through the identical cable signal line of the array element number of scope three dimensional ultrasound probe.
Adopt the wiring of gear-like groove that holding wire is linked to each other with the piezoelectricity cylinder; After the wiring through cutting such as not only can obtain at big or small equally spaced piezoelectricity array element to the line of cylindric piezoelectric; The electricity of nature between holding wire is broken off; Form the one-one relationship of array element and holding wire, this just saves one by one the spot weld operation of going to array element and lead.
Preferably use conducting resinl (or steaming gold) that the ground wire of coaxial cable holding wire is linked to each other with back lining materials, the coaxial signal line heart yearn is linked to each other with matching layer.The preferred especially method of steaming gold electrode of using makes the heart yearn of all coaxial cables be communicated with the piezoelectric matching layer in the present embodiment, and through cutting array element process afterwards, electricity is broken off between each heart yearn; The ground wire of all coaxial cables is communicated with on back lining materials with conducting resinl.
The insulating bar butt end is fixed on the rotary apparatus, cuts out the ring-type two-dimensional array with wire cutting machine, each coaxial signal line heart yearn breaks off naturally, inserts the material of decoupling, and evacuation removes bubble and solidifies, and bores the sticking plaster of the aerial heart, and encapsulation obtains three dimensional ultrasound probe.
Like Fig. 3,301 is the ring-type three dimensional ultrasound probe in the present embodiment, and 302 is the metal cylinder on the rotary apparatus, works to support the cutting main body.303 is swivel head, is designed with scale, can carry out the Spin Control of accurate angle in 360 degree.Swivel head is fixed on the bearing 304, and the outstanding metal cylinder in swivel head left side partly passes the circular hole at hold-down support 304 centers, links to each other with cutting main body 301.Need to prove, must guarantee that above each parts are in concentric position, the degree of accuracy in the time of just guaranteeing to cut.The bottom of hold-down support is slick plane, can be by vac sorb on the Cutting platform of wire cutting machine.
Fig. 4 shows is the localized groove when arranging coaxial cable holding wire and cutting array element in the present embodiment, and the device that can select the plastic material of easy cutting processing for use and combine Fig. 3 to design is prepared from wire cutting machine cutting.For example, at first process an insulating concrete cylinder 401 and one the one thin insulating bar of the thick end of end, as shown in Figure 4: butt end is 402, and thin end is 403.The insulating concrete cylinder internal diameter size is consistent with the outside dimension of cylindric piezoelectric, and insulating bar carefully holds size consistent with cylindric piezoelectric outside dimension, insulating concrete cylinder outside dimension and insulating bar butt end consistent size.Cylindric piezoelectric will be fixed between insulating concrete cylinder and the thin end of insulating bar, and the insulating bar butt end will be fixed on the rotary apparatus.According to the array element number N of ring-type two-dimensional array ultrasonic probe, N can be 32,64,128 even more, and the present invention does not limit; 360 °/N of every anglec of rotation; Carry out the primary line cutting, cutting groove depth and width are slightly larger than the diameter of coaxial cable holding wire, so that in grooving, arrange the coaxial cable holding wire; After accomplishing N line cutting of a circle, promptly obtain shape shown in Figure 4.
Be used for ring-type three dimensional ultrasound probe in the present embodiment, comprise ring-type piezoelectricity battle array 101 and insulation sleeve 105 through scope.
Wherein, ring-type piezoelectricity battle array 101 comprises a plurality of piezoelectric units, and each piezoelectric unit is arrayed and forms the concentric ring with central through hole, in order to send or to receive ultrasound wave, has the slit between each piezoelectric unit, is used for filling and solidifies the material 103 of decoupling.Insulation sleeve 105 is sleeved on said ring-type piezoelectricity battle array 101 peripheries, evenly is arranged at intervals with groove on it vertically, is used for the ccontaining signal cable of arranging;
Be socketed with insulating bar 402,403 in the central through hole of ring-type piezoelectricity battle array 101, an end diameter of this insulating bar 402,403 is less, and other end diameter is bigger, and wherein less end 402 is sleeved in the central through hole of piezoelectricity cylinder.The big end end 403 of insulating bar has been along circumferentially also having cut a plurality of axial notches, and it is corresponding one by one with groove on the insulation sleeve 105.
One end end face of ring-type piezoelectricity battle array 101 covers backing layer 102, and other end end face covers matching layer.
Claims (10)
1. a method for preparing that is used for through the ring-type three dimensional ultrasound probe of scope is characterized in that, comprises the steps:
In cylindric piezoelectric both ends of the surface plated electrode and polarization, the end face after polarization covers backing layer again, and the other end covers matching layer, forms the piezoelectricity cylinder;
Fixedly suit insulating bar and insulating concrete cylinder respectively on the endoporus of said piezoelectricity cylinder and periphery; And on the outer peripheral face with respect to the outer peripheral face of the other end of this piezoelectricity cylinder one end of suit and said insulating concrete cylinder of said insulating bar, cut out a plurality of axial notches; Each axial notch is at the uniform distribution that makes progress in the week of corresponding outer peripheral face, to be used for the ccontaining signal cable of arranging;
Between each groove on the outer peripheral face of said insulating concrete cylinder, axially cut said insulating concrete cylinder and piezoelectricity cylinder, make said piezoelectricity cylinder be split into a plurality of piezoelectric units, and fill the material of decoupling in the slit between each piezoelectric unit;
Encapsulation can obtain the said ring-type three dimensional ultrasound probe that is used for through scope.
2. the method for preparing that is used for through the ring-type three dimensional ultrasound probe of scope according to claim 1; It is characterized in that; One end diameter of said insulating bar is less; Other end diameter is bigger, and wherein less end is sleeved in the endoporus of piezoelectricity cylinder, and bigger other end outer peripheral face has said axial notch.
3. the method for preparing that is used for through the ring-type three dimensional ultrasound probe of scope according to claim 1 and 2 is characterized in that said insulating bar has central through hole.
4. according to the described method for preparing that is used for through the ring-type three dimensional ultrasound probe of scope of one of claim 1-3, it is characterized in that said piezoelectricity cylinder can be piezoelectric ceramics or monocrystalline piezoelectric material.
5. according to the described method for preparing that is used for through the ring-type three dimensional ultrasound probe of scope of one of claim 1-4; It is characterized in that; The axial notch of the outer peripheral face of said insulating bar outer peripheral face and insulating concrete cylinder is corresponding one by one, and its quantity equates with the number of said piezoelectric unit.
6. according to the described method for preparing that is used for through the ring-type three dimensional ultrasound probe of scope of one of claim 1-5; It is characterized in that; The bigger end of said insulating bar diameter is installed on the wire cutting machine, through driving the insulating bar rotation, realizes the cutting to said axial notch and said piezoelectricity cylinder.
7. ring-type three dimensional ultrasound probe that is used for through scope comprises:
Ring-type piezoelectricity battle array (101), it comprises a plurality of piezoelectric units, each piezoelectric unit is arrayed and forms the concentric ring with central through hole, in order to send or to receive ultrasound wave;
Insulation sleeve (105), it is sleeved on said ring-type piezoelectricity battle array (101) periphery, evenly is arranged at intervals with axial notch on it vertically, is used for the ccontaining signal cable of arranging;
It is characterized in that, have the slit between said each piezoelectric unit, be used for filling and solidify the material (103) of decoupling.
8. the ring-type three dimensional ultrasound probe that is used for through scope according to claim 7; It is characterized in that; Be socketed with insulating bar (402,403) in the central through hole of described ring-type piezoelectricity battle array (101); The one end diameter of this insulating bar (402,403) is less, and other end diameter is bigger, and wherein less end (402) are sleeved in the said central through hole of piezoelectricity cylinder.
9. according to claim 7 or the 8 described ring-type three dimensional ultrasound probes that are used for through scope; It is characterized in that; One end end face of said ring-type piezoelectricity battle array (101) is coated with backing layer (102); Other end end face covers matching layer, be used for linking to each other with the ground wire of signal cable respectively with the heart yearn in the signal cable is linked to each other.
10. according to Claim 8 or the 9 described ring-type three dimensional ultrasound probes that are used for through scope; It is characterized in that; The big end end (403) of said insulating bar (402,403) is along circumferentially having cut a plurality of axial notches; It is corresponding one by one with axial notch on the insulation sleeve (105), is used for the ccontaining signal cable of arranging.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105640588A (en) * | 2014-12-03 | 2016-06-08 | 中国科学院深圳先进技术研究院 | Deep brain-stimulated and nerve-regulated large-scale area array ultrasonic probe and preparation method for same |
| CN105708491A (en) * | 2014-12-03 | 2016-06-29 | 中国科学院深圳先进技术研究院 | Ultrasound area array probe for deep brain stimulation and nerve regulation and control and preparation method of ultrasound area array probe |
| CN110215230A (en) * | 2019-06-27 | 2019-09-10 | 深圳市德力凯医疗设备股份有限公司 | A kind of preparation method and ring battle array probe of the ring battle array probe that bimodal focuses |
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