CN105411629A - Ultrasonic endoscope and transducer thereof - Google Patents
Ultrasonic endoscope and transducer thereof Download PDFInfo
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- CN105411629A CN105411629A CN201610014134.8A CN201610014134A CN105411629A CN 105411629 A CN105411629 A CN 105411629A CN 201610014134 A CN201610014134 A CN 201610014134A CN 105411629 A CN105411629 A CN 105411629A
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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
- A61B8/12—Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
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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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Abstract
The invention discloses a transducer of an ultrasonic endoscope. The transducer comprises a main body and a core support barrel; the main body comprises piezoelectric vibrators arranged evenly and circumferentially, a matching layer located on the outer layer of the piezoelectric vibrators, a lining material located on the inner layer of the piezoelectric vibrators and an acoustic lens arranged on the exterior of the matching layer in a covering mode; the main body is fixedly arranged on the exterior of the core support barrel in a sleeving mode, and the two ends of the core support barrel are each provided with a connection portion. According to the transducer of the ultrasonic endoscope, the interior of the transducer does not need to be filled with epoxy materials, the interior of a cavity of the core support barrel can be used for arranging parts such as a water injection channel, a forceps way pipe, an optical fiber and a cable, and therefore disassembly, maintenance and replacement are convenient; in addition, the core support barrel serves as a connecting part for connecting the front portion and the back portion of the transducer, the production and assembly technology can be effectively simplified, and therefore the production efficiency is improved. The invention further discloses the ultrasonic endoscope with the transducer.
Description
Technical field
The present invention relates to ultrasonic technique field, more particularly, relate to a kind of transducer of ultrasonic endoscope, also relate to a kind of ultrasonic endoscope comprising above-mentioned transducer.
Background technology
In clinical medicine, endoscope is more and more widely used in the middle of clinical diagnosis and treatment, along with the prosperity of state-of-the-art technology, design also more and more hommization, the modernization of endoscope, utilizes modern high-quality precision and sophisticated technology to make the design and manufaction of endoscope also more intelligent.Medical supersonic scope is on fujinon electronic video endoscope basis, utilize miniprobe sonography to probe in human body, and by scanning, the three-dimensional focus that display is three-dimensional, obtains the information of corresponding site, reach the object checking diagnosis.
Ultrasonic endoscope is the combination of a kind of ultrasound wave and endoscope, its principle is the duplication check utilizing endoscope and ultrasonic echo to realize Target organ tissue, to human body without any wound and electromagnetic radiation, the dynamic image that people's body section is provided that can be accurately lively.
The ultra sonic imaging of medical supersonic scope mainly relies on ultrasonic transducer to be sensing element, with the form of ultrasonic echo, is obtained the histologic characteristics of target site, thus reach clinic diagnosis object by echo-signal.The acquisition of ultrasonic echo is then rely on the back voltage effect of ultrasonic transduction material piezoquartz and positive voltage effect to realize.
Ultrasonic transducer common in prior art is generally at back lining materials external application wafer, and the inside of ring-type backing is filled epoxy material and strengthened.But, because back lining materials is epoxy material, hard and crisp, easily rupture.Probe needs to bear enough axial, radial pressure in testing process, and being strengthened by epoxy material increases production cost.And inner perfusion epoxy material makes later stage after-sales service inconvenience.
In sum, how effectively solving the problems such as the after-sales service of ultrasonic endoscope probe is inconvenient, cost is higher, is current those skilled in the art's urgent problem.
Summary of the invention
In view of this, first object of the present invention is the transducer providing a kind of ultrasonic endoscope, the structural design of the transducer of this ultrasonic endoscope can solve the problem that the after-sales service of ultrasonic endoscope probe is inconvenient, cost is higher effectively, and second object of the present invention is to provide a kind of ultrasonic endoscope comprising transducer.
In order to reach above-mentioned first object, the invention provides following technical scheme:
A kind of transducer of ultrasonic endoscope, comprise main part and core support tube, the acoustic lens that described main part comprises circumferentially evenly distributed piezoelectric vibrator, is positioned at the outer field matching layer of piezoelectric vibrator, is positioned at the back lining materials of piezoelectric vibrator internal layer and covers at outside described matching layer; Described main part fixed cover is located at outside described core support tube, and the two ends of described core support tube are respectively arranged with connecting portion.
Preferably, in above-mentioned transducer, described core support tube is stainless steel cylinder.
Preferably, in above-mentioned transducer, described core support tube comprises the steel disc of multiple ring-type, multiple described steel disc arranged in co-axial alignment composition tubular structure.
Preferably, in above-mentioned transducer, described connecting portion comprises the connecting cylinder being fixedly connected on described core support tube one end, and the end opens of described connecting cylinder has multiple groove, the barrel of described connecting cylinder offers the through hole for being connected with described guiding joint.
Preferably, in above-mentioned transducer, described connecting portion also comprises the through hole being opened in and described core support tube deviating from one end of described connecting cylinder.
Preferably, in above-mentioned transducer, described acoustic lens and described core support tube are sealedly and fixedly connected, and described piezoelectric vibrator, back lining materials and matching layer are arranged in the confined space that described acoustic lens and described core support tube formed.
Preferably, in above-mentioned transducer, be provided with flexible PCB between described back lining materials and described piezoelectric vibrator, the part exceeded outside described piezoelectric vibrator of described flexible PCB is fixedly connected with described core support tube.
Preferably, in above-mentioned transducer, described back lining materials is epoxy cohesive material, and described epoxy cohesive material and described core support tube bond.
Preferably, in above-mentioned transducer, the outer wall of described core support tube is provided with annular recess, and described back lining materials is arranged in described annular recess.
The transducer of ultrasonic endoscope provided by the invention comprises main part and core support tube.Wherein, main part comprises the back lining materials, piezoelectric vibrator, matching layer and the acoustic lens that covers at outside matching layer that are set with successively from the inside to the outside.Piezoelectric vibrator is evenly distributed in circumference, namely 360 degree circumferentially evenly distributed, sweep to carry out ring.Core support tube is arranged at inside back lining materials, and the two is fixedly connected with, and namely back lining materials is fixedly connected on outside core support tube.Core support tube is namely in tubular structure, and inside has through hole.The two ends of core support tube are respectively arranged with connecting portion.
Apply the transducer of ultrasonic endoscope provided by the invention, by core support tube supportive body portion, improve the intensity of main part, so that axis, radial force demand can be met, core support tube, as the final load parts of transducer, fills epoxy material without the need to inside.Thus the cavity of core support tube inside, can be used for the layout of the parts such as waterflood path, pincers deferent, optical fiber, cable, and then is convenient to dismounting, maintenance and changes.And the two ends of core support tube are respectively arranged with connecting portion, by connecting portion easily with other anatomical connectivity of ultrasonic endoscope, namely using core support tube latter linked link before transducer, can effectively reduce production assembly technology, and then enhance productivity.Meanwhile, maintenance and the facility changed also make more feasible after sale, and the feasibility of maintenance improves, thus extends the service life of product, reduce product single use cost, improve social benefit.
In a preferred embodiment, the transducer of ultrasonic endoscope provided by the invention, is provided with flexible PCB between its back lining materials and piezoelectric vibrator, and the part be positioned at outside piezoelectric vibrator of flexible PCB is fixedly connected with core support tube.Namely the link position of flexible PCB and core support tube is positioned at beyond piezoelectric vibrator, and then the external force transmitted by cable in product regenerative ratio and use procedure can terminate in outside oscillator, to ensure that the conducting of circuit does not affect by external force.
In order to reach above-mentioned second object, present invention also offers a kind of ultrasonic endoscope, this ultrasonic endoscope comprises any one transducer above-mentioned.Because above-mentioned transducer has above-mentioned technique effect, the ultrasonic endoscope with this transducer also should have corresponding technique effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the three dimensional structure schematic diagram of the ultrasonic interior a kind of detailed description of the invention of transducer of mirror provided by the invention;
Fig. 2 is the longitudinal section sectional structure schematic diagram of Fig. 1;
Fig. 3 is the cross-sectional cut-away structural representation of Fig. 1;
Fig. 4 is the side-looking structural representation of Fig. 1.
In accompanying drawing, labelling is as follows:
Core support tube 1, back lining materials 2, flexible PCB 3, piezoelectric vibrator 4, acoustic lens 5, connecting cylinder 6.
Detailed description of the invention
The embodiment of the invention discloses a kind of transducer of ultrasonic endoscope so that ultrasonic endoscope probe after-sales service, reduce costs.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 4, Fig. 1 is the three dimensional structure schematic diagram of a kind of detailed description of the invention of transducer of ultrasonic endoscope provided by the invention; Fig. 2 is the longitudinal section sectional structure schematic diagram of Fig. 1; Fig. 3 is the cross-sectional cut-away structural representation of Fig. 1; Fig. 4 is the side-looking structural representation of Fig. 1.
In a kind of detailed description of the invention, the transducer of ultrasonic endoscope provided by the invention comprises main part and core support tube 1.
Wherein, main part comprises the back lining materials 2, piezoelectric vibrator 4, matching layer and the acoustic lens 5 that covers at outside matching layer that are set with successively from the inside to the outside.It should be noted that, the side of nearly transducer axis is all depended in the inner side herein and hereafter mentioned.Piezoelectric vibrator 4 is evenly distributed in circumference, namely 360 degree circumferentially evenly distributed, sweep to carry out ring, 360 degree of circumference imagings.Namely piezoelectric vibrator 4 has the oscillator of piezoelectricity conversion, relies on the back voltage effect of piezoelectric vibrator 4 piezoquartz and positive voltage effect to obtain ultrasonic echo.Piezoelectric vibrator 4 is generally piezoelectric, as piezoelectric ceramics etc.Piezoelectric is generally hard and crisp, by the support of core support tube 1, makes it not impaired because of external force.The action principle of concrete piezoelectric vibrator 4 and structure etc. please refer to prior art, repeat no more herein.
Back lining materials 2 is for alleviating the vibration from wafer, and shorten wavelength and improve axial resolution, it is generally epoxy material, hard and crisp.Back lining materials 2 is fixedly connected on outside core support tube 1, and be the ground floor material outside core support tube 1, piezoelectric vibrator 4 is arranged at the skin of back lining materials 2.Piezoelectric vibrator 4 is outer be matching layer, and matching layer detects position skin etc. and the difference of acoustic impedance causes between popping one's head in multipath reflection for reducing.Because piezoelectric vibrator 4 is evenly distributed in circumference, all in the form of a ring, its concrete structure etc. please refer to prior art for corresponding back lining materials 2 and matching layer.
Be covered with acoustic lens 5 outside matching layer, acoustic lens 5 and core support tube 1 are generally and are tightly connected, and then form closed inner chamber between acoustic lens 5 and core support tube 1, and back lining materials 2, piezoelectric vibrator 4 are all arranged in closed inner chamber with matching layer.That is by the setting of acoustic lens 5, on the one hand piezoelectric vibrator 4 is closed fixing, make oscillator directly and extraneous contact, avoid it directly stressed and damage.Acoustic lens 5, as the direct force structure of external force, effectively protects piezoelectric vibrator 4, makes the conducting in its piezoelectricity loop unaffected.Meanwhile, acoustic lens 5 pairs of sound waves have focussing force, thus can from transverse axis and the enterprising line focusing of y direction.The materials of concrete acoustic lens 5 etc. are selected to please refer to prior art.And according to actual needs, acoustic lens 5 also can be set and cover at outside matching layer, and not seal with core support tube 1.But be generally set to be tightly connected and be more conducive to protecting piezoelectric vibrator 4, certainly, concrete also can seal acoustic lens 5 and core support tube 1 by arranging other hermetically-sealed constructions.
Core support tube 1 is arranged at inside back lining materials 2, and is fixedly connected with back lining materials 2.Core support tube 1 is namely in tubular structure, and inside has through hole, and namely its cross section is anchor ring.The two ends of core support tube 1 are respectively arranged with connecting portion, for other anatomical connectivity with ultrasonic endoscope, as one end is used for other anatomical connectivity with the scopes such as joint that lead; The other end is used for being fixedly connected with the first-class structure of the shooting of ultrasonic endoscope.The concrete ultrasonic endoscope parts be connected with connecting portion please refer to prior art.Connecting portion can be the connector be connected with core support tube 1, also can for being opened in the connecting portions such as through hole on core support tube 1.For ease of connecting, the length of core support tube 1 is generally greater than the length of acoustic lens 5.Core support tube 1 is main load-carrying construction, and therefore its intensity should meet certain requirement of strength, specifically arranges according to actual needs.
By core support tube 1 supportive body portion, improve the intensity of main part, can meet axis, radial force demand, core support tube 1, as the final load parts of transducer, fills epoxy material without the need to inside.Thus the cavity of core support tube 1 inside, can be used for the layout of the parts such as waterflood path, pincers deferent, optical fiber, cable, and then just dismantles, keeps in repair and change.And the two ends of core support tube 1 are respectively arranged with connecting portion.By connecting portion easily with other anatomical connectivity of ultrasonic endoscope, namely using core support tube 1 latter linked link before transducer.The setting of core support tube 1 can effectively reduce production assembly technology, and then enhances productivity.Meanwhile, maintenance and the facility changed also make more feasible after sale, and the feasibility of maintenance improves, thus extends the service life of product, reduce product single use cost, improve social benefit.
Concrete, core support tube 1 can be stainless steel cylinder.The intensity of stainless steel cylinder is high, when its thickness is machined to a smaller value, still has higher intensity.Thus can effectively reduce the thickness of core support tube 1, its wall thickness is less, and inner through-hole aperture is larger, and then more sufficient space can be provided to arrange other parts.And the high strength of stainless steel material itself, can meet the clinical requirement of whole transducer to intensity, fill reinforcing material without the need to inside, the parts thus in interior bone are convenient to detachable maintaining etc.According to concrete intensity needs, the thin wall cylinder that can meet requirement of strength of other materials also can be adopted, as fiberglass thin wall cylinder etc.But general, adopt the reinforced effects of metal thin-walled cylinder to main part with high strength better.
It should be noted that, above address the core support tube 1 hereafter mentioned, both comprised one tubular structure, also not exclusively closed, overall tubular structure is comprised, cross section as core support tube 1 is tool circle jaggy, and namely it is not exclusively closed, leaves space.Moreover core support tube 1 can be split-type structural, comprise the support annulus of multiple arranged in co-axial alignment, multiple support annulus rearranges tubular structure.Concrete, supporting annulus can be steel disc, multiple steel disc arranged in co-axial alignment composition tubular structure.By multiple steel disc composition tubular structure, enough intensity can be provided on the one hand, interval suitable between multiple steel disc can be set according to strength demand simultaneously, thus reduce the weight of core support tube 1, and then make ultrasonic transducer more light.
Further, connecting portion can comprise the connecting cylinder 6 being fixedly connected on core support tube 1 one end, and the end opens of connecting cylinder 6 has multiple groove, and the barrel of connecting cylinder 6 offers through hole, by through hole can with other anatomical connectivity of ultrasonic endoscopes such as guiding joint etc.Connecting portion is set to tubular, makes on the one hand its easy to connect with core support tube 1, other anatomical connectivity of its other end and the ultrasonic endoscopes such as joint that lead also more simultaneously.And the end opens of connecting cylinder 6 has multiple groove, also just make the end of connecting cylinder 6 have laminated structure, and then laminated structure can have certain displacement diametrically, be convenient to be connected with the suit of other structures of ultrasonic endoscope.The barrel of connecting cylinder 6 can offer through hole, and concrete connected mode can with reference to prior art.Connecting cylinder 6 specifically can be fixedly connected with core support tube 1 is dismountable, as being threaded connection, or the locking such as snap close, and then be convenient to dismounting and maintenance.
Further, connecting portion can also comprise the through hole being opened in one end core support tube 1 deviating from connecting cylinder 6.One end that namely core support tube 1 deviates from connecting cylinder 6 offers for the through hole that be connected first-class in the shooting of ultrasonic endoscope.General, one end of transducer is connected with the first-class parts of the shooting of ultrasonic endoscope, and the other end is connected with guiding joint etc.The two ends of core support tube 1 arrange connecting portion, and one end is specifically as follows connecting cylinder 6, and the other end can for being opened in the through hole on core support tube 1.Namely core support tube 1 is latter linked critical piece before whole transducer, is arranged so that producing assembly technology requirement reduces, and then improves productivity ratio by it.
On the basis of the various embodiments described above, can arrange flexible PCB 3 between back lining materials 2 and piezoelectric vibrator 4, the part exceeded outside piezoelectric vibrator 4 of flexible PCB 3 is fixedly connected with core support tube 1.Namely the length of flexible PCB 3 is greater than the length of piezoelectric vibrator 4, and its part is positioned at the inner side of piezoelectric vibrator 4, and another part exceeds piezoelectric vibrator 4.Flexible PCB 3 is positioned at beyond piezoelectric vibrator 4 with the link position of core support tube 1, namely be fixedly connected with core support tube 1 by the part exceeding piezoelectric vibrator 4 of flexible PCB 3, and then the external force transmitted by cable in product regenerative ratio and use procedure can terminate in outside oscillator, to ensure that the conducting of circuit does not affect by external force.Concrete flexible PCB 3 can for bond with the annexation of core support tube 1.Certainly, as required, also flexible PCB 3 can be arranged at one end of piezoelectric vibrator 4, and be connected with flexible PCB 3 by piezoelectric vibrator 4 by lead-in wire, but it is comparatively complicated so to arrange structure, production cost is higher.
Further, back lining materials 2 can be epoxy cohesive material, and epoxy cohesive material and core support tube 1 bond.Back lining materials 2 adopts epoxy cohesive material, in conjunction with the bonding characteristic of himself, can directly adhere on core support tube 1, is thus convenient to processing.
Further, the outer wall of core support tube 1 can arrange annular recess, back lining materials 2 is arranged in annular recess.Namely on the outer wall of core support tube 1, circumferentially offer one week groove, back lining materials 2 is arranged in annular recess, then at back lining materials 2 arranged outside piezoelectric vibrator 4.Concrete back lining materials 2 can direct pouring in annular recess, and be processed into the size and shape that meet technological requirement by follow-up machined.Therefore by above-mentioned setting, be convenient to the setting of back lining materials 2, ensure the bonding strength of itself and core support tube 1.
Based on the transducer of the ultrasonic endoscope provided in above-described embodiment, present invention also offers a kind of ultrasonic endoscope, this ultrasonic endoscope comprises any one transducer in above-described embodiment.The transducer in above-described embodiment is have employed, so the beneficial effect of this ultrasonic endoscope please refer to above-described embodiment due to this ultrasonic endoscope.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.And it is one or more all can to limit separately or increase wherein for the increase etc. of the restriction of the restriction of core support tube 1 structure, connecting-piece structure, flexible PCB 3 and the restriction of core support tube 1 link position, the restriction of back lining materials 2 and core support tube 1 upper annular groove, the new technical scheme formed thus also should in the scope of the application's protection.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. the transducer of a ultrasonic endoscope, it is characterized in that, comprise main part and core support tube (1), described main part comprises circumferentially evenly distributed piezoelectric vibrator (4), is positioned at piezoelectric vibrator (4) outer field matching layer, is positioned at the back lining materials (2) of piezoelectric vibrator (4) internal layer and covers at the acoustic lens (5) outside described matching layer; Described main part fixed cover is located at described core support tube (1) outward, and the two ends of described core support tube (1) are respectively arranged with connecting portion.
2. transducer according to claim 1, is characterized in that, described core support tube (1) is stainless steel cylinder.
3. transducer according to claim 1, is characterized in that, described core support tube (1) comprises the steel disc of multiple ring-type, multiple described steel disc arranged in co-axial alignment composition tubular structure.
4. transducer according to claim 1, it is characterized in that, described connecting portion comprises the connecting cylinder (6) being fixedly connected on described core support tube (1) one end, the end opens of described connecting cylinder (6) has multiple groove, and the barrel of described connecting cylinder (6) offers through hole.
5. transducer according to claim 4, is characterized in that, described connecting portion also comprises the through hole being opened in and described core support tube (1) being deviated from one end of described connecting cylinder (6).
6. transducer according to claim 1, it is characterized in that, described acoustic lens (5) and described core support tube (1) are sealedly and fixedly connected, and described piezoelectric vibrator (4), back lining materials (2) and matching layer are arranged in the confined space that described acoustic lens (5) and described core support tube (1) formed.
7. the transducer according to claim 1 to 6 any one, it is characterized in that, be provided with flexible PCB (3) between described back lining materials (2) and described piezoelectric vibrator (4), described piezoelectric vibrator (4) part outward that exceeds of described flexible PCB (3) is fixedly connected with described core support tube (1).
8. transducer according to claim 7, is characterized in that, described back lining materials (2) is epoxy cohesive material, and described epoxy cohesive material and described core support tube (1) bond.
9. transducer according to claim 8, is characterized in that, the outer wall of described core support tube (1) is provided with annular recess, and described back lining materials (2) is arranged in described annular recess.
10. a ultrasonic endoscope, is characterized in that, comprises the transducer as described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014134.8A CN105411629A (en) | 2016-01-11 | 2016-01-11 | Ultrasonic endoscope and transducer thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014134.8A CN105411629A (en) | 2016-01-11 | 2016-01-11 | Ultrasonic endoscope and transducer thereof |
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| CN105411629A true CN105411629A (en) | 2016-03-23 |
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| CN201610014134.8A Pending CN105411629A (en) | 2016-01-11 | 2016-01-11 | Ultrasonic endoscope and transducer thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109199453A (en) * | 2017-06-30 | 2019-01-15 | 深圳开立生物医疗科技股份有限公司 | A kind of endoscopic ultrasonography connector and a kind of endoscopic ultrasonography |
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Application publication date: 20160323 |