CN106361295A - Optical and acoustic mixed imaging conduit - Google Patents
Optical and acoustic mixed imaging conduit Download PDFInfo
- Publication number
- CN106361295A CN106361295A CN201611107642.7A CN201611107642A CN106361295A CN 106361295 A CN106361295 A CN 106361295A CN 201611107642 A CN201611107642 A CN 201611107642A CN 106361295 A CN106361295 A CN 106361295A
- Authority
- CN
- China
- Prior art keywords
- conduit
- layer
- mixed
- piezoelectric layer
- acoustics
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0084—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for introduction into the body, e.g. by catheters
-
- 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
-
- 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
Abstract
The invention discloses an optical and acoustic mixed imaging conduit. The optical and acoustic mixed imaging conduit comprises a conduit sheath, a near-end connecting unit and a far-end rapid switching head. The near-end connecting unit is connected to a photoelectric connector; a conduit cavity is formed in the conduit sheath, a mixed probe and a driving spiral pipe are arranged inside the conduit cavity, and the driving spiral pipe moves a far end horizontally and rotates the far end inside the conduit cavity under driving of a driving motor; the mixed probe comprises a probe shell, an electroacoustic transducer and an optical element are arranged inside the probe shell, and an optical fiber and a wire are arranged inside the driving spiral pipe; the optical element and the electroacoustic transducer are arrayed on the axis of the probe shell, and the probe shell is further filled with glue; the electroacoustic transducer comprises a piezoelectric layer, a matching layer and a back lining layer, wherein the piezoelectric layer is made from piezoelectric materials, the upper end face of the piezoelectric layer is wrapped by the matching layer, and the back lining layer makes contact with the lower end face of the piezoelectric layer. The imaging conduit carries out scanning at a time, then an acoustic image and an optical image can be obtained, and therefore imaging efficiency is high; the mixed probe is compact in structural design, easy and convenient to produce and manufacture according to a technology and reliable in performance.
Description
Technical field
The present invention relates to mixing imaging field, more particularly, to a kind of optics and acoustics mixing probe.
Background technology
Widely, rotation sweep such as disappears the application in medical science of optical imagery and acoustics imaging to some human bodies
Change road or blood vessel carries out imaging and has special benefits.By rotation sweep, the very little probe of volume can be made, by elongated
Conduit be imaged.There are a variety of imaging catheters on the market at present, the more commonly used has optical imagery conduit and acoustics imaging
Conduit, such as optical coherence tomography and blood vessel endoscope are ultrasonic.In general, optical imagery has fine definition and low penetration depth
Feature, and acoustics imaging has the feature of high-penetration depth and low definition, therefore has certain complementarity between the two.?
In some cases, in the diagnosis such as to complex lesions in some narrow lumens, more accurately diagnose to make, doctor both needed
With optical imagery it is also desirable to use acoustics imaging.
Both needing with optical imagery it is also desirable in the case of with acoustics imaging, optical imagery harmony can be carried out simultaneously
The mixing imaging probe studying picture has obvious advantage.But for similar coronary artery, biliary tract, fallopian tube etc. is tiny
During the imaging of tube chamber, what the diameter of mixing probe must do can not be more too many greatly than the probe of simple function, and manufacturing cost must
Must control within the acceptable range, this proposes special challenge to probe manufacturing process.In this case, sometimes even
The key factor that the choice of a piece wire all can become limit product performance indications and determine product whether easy to manufacture is therefore right
The improved demand of probe manufacturing process is never interrupted.
Content of the invention
It is an object of the invention to provide a kind of optics and acoustics are mixed into as conduit.
For achieving the above object, the technical scheme is that a kind of optics and acoustics are mixed into picture conduit, including
Catheter sheath, near-end connection unit, far-end quickly exchange head；Described near-end connection unit includes light electric connection, catheter sheath and near-end
Connection unit connects, and far-end quickly exchanges the end that head is located at catheter sheath；
It is catheter lumen inside described catheter sheath, conduit intracavity is provided with mixing probe, drives serpentine pipe, and mixing probe is arranged on driving
The end of serpentine pipe, drives serpentine pipe to drive mixing probe in the translation of conduit intracavity and to rotate；Mixing probe includes tubular type and visits
Head shell, probing shell side has aperture, and little in the hole is provided with electroacoustic transducer and the transmitting-receiving optical signalling of transmitting-receiving acoustic signal
Optical element, drive serpentine pipe in be provided with conducting optical signal optical fiber and conduction electrical signal electric wire；
Described optical element, electroacoustic transducer are sequentially arranged on the axis of probing shell along away from the direction driving serpentine pipe,
It is also filled with glue, fixing optical element and electroacoustic transducer in probing shell；
Described electroacoustic transducer includes piezoelectric layer, matching layer, backing layer, and piezoelectric layer is piezoelectric, and matching layer wraps up piezoelectric layer
Upper surface, backing layer is contacted with piezoelectric layer lower surface.
Further, the upper and lower end face of described piezoelectric layer is respectively equipped with electrode coating, and described electric wire is connected to two electrodes and applies
Layer.
Further, described matching layer, backing layer contain conducting medium, and described electric wire is connected to the matching layer of upper surface
And backing layer.
Further, described piezoelectric layer upper surface is provided with electrode coating, and backing layer contains conducting medium, and described electric wire connects respectively
Connect piezoelectric layer upper surface electrode coating and backing layer.
Further, in described probing shell, the glue of filling is conducting resinl, and backing layer, matching layer contain conducting medium, lead
Electric glue and matching layer do not make electrical contact with, and conducting resinl is made electrical contact with backing layer, and described electric wire is connected respectively to matching layer and conducting resinl.
Further, in described probing shell, the glue of filling is conducting resinl, and described piezoelectric layer upper surface is provided with electrode coating,
Backing layer contains conducting medium, and conducting resinl is not made electrical contact with piezoelectric layer upper surface electrode coating, and conducting resinl is connect with backing layer electricity
Touch, described electric wire is connected respectively to piezoelectric layer upper surface electrode coating and glue.
Further, the sonic propagation direction of the light wave propagation direction of the transmitting of described optical element and electroacoustic transducer transmitting
Between angle be less than 10 °.
Further, the light wave propagation direction of described optical element transmitting, the sonic propagation direction of electroacoustic transducer transmitting with
The angle of catheter shaft is respectively 2 ° -10 °.
Further, described backing layer contains and can adjust acoustic impedance scattered sound waves and tungsten powder and the silver changing electrical impedance
Powder.
The invention has the beneficial effects as follows:
The imaging catheter single pass that the present invention provides, you can obtain acoustic picture and optical imagery, imaging efficiency is high；Mixing is visited
The structure design of head is compact, and manufacturing process is simple and direct, dependable performance.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is to locate partial enlarged drawing in Fig. 1；
Fig. 3 is mixing sonde configuration schematic diagram.
Specific embodiment
Below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.
As shown in figure 1, a kind of optics and acoustics are mixed into as conduit, fast including catheter sheath 1, near-end connection unit 2, far-end
Speed exchange 3；Described near-end connection unit 2 includes light electric connection (not shown), and catheter sheath 1 is with near-end connection unit 2 even
Connect, the quick exchange 3 of far-end is located at the end of catheter sheath 1.
As shown in Fig. 2 described catheter sheath 1 inside is catheter lumen 101, inside the quick exchange 3 of far-end, it is provided with guidewire lumen
301, catheter lumen 101 and guidewire lumen 301 are not communicated with.
As shown in Figure 2,3, it is provided with mixing probe 4 in catheter lumen 101, drives serpentine pipe 6, mixing probe 4 is arranged on driving
The end of serpentine pipe 6, drives serpentine pipe 6 to drive mixing probe 4 to translate in catheter lumen 101 and rotate.
Mixing probe 4 includes tubular type probing shell 401, and probing shell 401 is usually metal, glass or organic polymer
Thing is made.Probing shell 401 side has aperture 402, is provided with electroacoustic transducer 403 He of transmitting-receiving acoustic signal in aperture 402
The optical element 404 of transmitting-receiving optical signalling, drives the optical fiber 601 being provided with conducting optical signal in serpentine pipe 6 and conduction electricity letter
Number electric wire 602.Electric wire can be twisted-pair feeder or coaxial cable, is placed on optical fiber side or wound fiber.Electric wire enters
After probing shell, be placed on side or beneath to avoid the light path of optical element.
Described optical element 404, electroacoustic transducer 403 are outer along being sequentially arranged in probe away from the direction driving serpentine pipe 6
On the axis of shell 401, in probing shell 401, it is also filled with glue 405 fixing optical element 404 and electroacoustic transducer 403.
Because mixing probe 4 is located in catheter sheath 1, and the refractive index of catheter sheath 1 inwall and acoustic impedance are impossible
Identical with surrounding medium, therefore catheter sheath 1 inwall itself often produces reflection, in order to reduce catheter sheath 1 inwall itself
Reflection, by the surface of emission of the light wave direction of the reflective surface of optical element 404 and electroacoustic transducer 403 and probing shell 401
Axis be intersecting, and there is certain angle so that leaving the light beam of mixing probe 4 and acoustic beam and probing shell axis
Vertical is misaligned, so can effectively reduce itself reflection.Preferably angular range is 2-10 °, so both can effectively drop
Itself reflection low, can prevent drift angle excessive again and measurement error and later stage be processed and causes trouble.It is aligned for convenience simultaneously
Optical imagery and acoustic picture, the light wave direction of the reflective surface of optical element 404 and the surface of emission of electroacoustic transducer 403 are sent out
The sound wave direction penetrated should point to same target location as far as possible.When target from probe distant when, both should be several
Parallel.
Described electroacoustic transducer 403 includes piezoelectric layer 4031, matching layer 4032, backing layer 4033, and piezoelectric layer 4031 is pressure
Electric material, piezoelectric be under pressure effect can between both ends of the surface, voltage occur, and both ends of the surface be subject to voltage act on when can
To produce pressure.Because piezoelectric itself is often and non-conductor, in order to reach best Electric Field Distribution, piezoelectric two ends
Generally require plus electrode.
Matching layer 4032 wraps up piezoelectric layer 4031 upper surface, and backing layer 4033 is contacted with piezoelectric layer 4031 lower surface.
Because the specific use of hybrid catheter is it is sometimes desirable to that does popping one's head in is less, such as probing shell size only 0.5mm,
At this moment the processing and fabricating popped one's head in is just extremely difficult, the bonding especially to the electric wire of electroacoustic transducer.Optimize electroacoustic transducer electricity
The adhesive bonding method of line, carries out the optimization of following three kinds of forms to electroacoustic transducer structure.
Electric wire connected mode 1: the upper and lower end face of described piezoelectric layer 4031 is respectively equipped with electrode coating (not shown), electricity
Pole coating can be evaporation a thin layer metal or the conducting resinl coating thin layer, and described electric wire 602 is connected to
The electrode coating of the upper and lower end face of piezoelectric layer 4031, constitutes the electrical return of electrode coating-piezoelectric layer-electrode coating.
Electric wire connected mode 2: described matching layer 4032, with conducting resinl as raw material, adds in backing layer 4033 and can adjust acoustic resistance
Anti- simultaneously scattered sound waves and the tungsten powder and the argentum powder that change electrical impedance, so that matching layer 4032, backing layer 4033 possess conductive specially good effect,
Described electric wire 602 is connected to piezoelectric layer 4031 upper surface matching layer 4032 and backing layer 4033, constitutes matching layer-piezoelectricity
The electrical return of layer-backing layer.
Electric wire needs not directly connect to electrode coating, and the processed complex degree of electroacoustic transducer substantially reduces.
Because the major function of backing layer is the sound wave of the opposite direction transmitting to the direction of the launch for the dissipation piezoelectric layer, adjust transducing
The q value of device, in order to avoid forming artifact and hangover and adjusting electroacoustic transformation efficiency, its thickness is larger with respect to electrode coating, and electric wire exists
Difficulty during bonding is less.
Electric wire connected mode 3: the glue 405 of described probing shell 401 filling directly adopts conducting resinl, backing layer 4033,
Matching layer 4032 contains conducting medium, and conducting resinl is not contacted with piezoelectric layer, and conducting resinl is made electrical contact with backing layer, described electric wire 602
It is connected to matching layer 4032 and the glue 405 of piezoelectric layer upper surface, constitute the electricity of glue-backing layer-piezoelectric layer-matching layer
Learn loop.
Further, it is also possible to be designed to electrode coating-piezoelectric layer-backing layer, electrode coating-piezoelectric layer-backing layer-glue
The corresponding electroacoustic transducer structure of electrical return.
Described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the present invention
In embodiment, the every other enforcement that those of ordinary skill in the art are obtained under the premise of not making creative work
Example, broadly falls into the scope of protection of the invention.
Claims (9)
1. a kind of optics and acoustics are mixed into as conduit it is characterised in that to include catheter sheath, near-end connection unit, far-end quick
Exchange head；Described near-end connection unit includes light electric connection, and catheter sheath is connected with near-end connection unit, and far-end quickly exchanges head and sets
End in catheter sheath；
It is catheter lumen inside described catheter sheath, conduit intracavity is provided with mixing probe, drives serpentine pipe, and mixing probe is arranged on driving
The end of serpentine pipe, drives serpentine pipe to drive mixing probe in the translation of conduit intracavity and to rotate；Mixing probe includes tubular type and visits
Head shell, probing shell side has aperture, and little in the hole is provided with electroacoustic transducer and the transmitting-receiving optical signalling of transmitting-receiving acoustic signal
Optical element, drive serpentine pipe in be provided with conducting optical signal optical fiber and conduction electrical signal electric wire；
Described optical element, electroacoustic transducer are sequentially arranged on the axis of probing shell along away from the direction driving serpentine pipe,
It is also filled with glue, fixing optical element and electroacoustic transducer in probing shell；
Described electroacoustic transducer includes piezoelectric layer, matching layer, backing layer, and piezoelectric layer is piezoelectric, and matching layer wraps up piezoelectric layer
Upper surface, backing layer is contacted with piezoelectric layer lower surface.
2. optics according to claim 1 and acoustics are mixed into as conduit it is characterised in that described piezoelectric layer upper and lower end
Face is respectively equipped with electrode coating, and described electric wire is connected to two electrode coatings.
3. optics according to claim 1 and acoustics are mixed into as conduit it is characterised in that described matching layer, backing layer
Containing conducting medium, described electric wire matching connection layer and backing layer respectively.
4. optics according to claim 1 and acoustics is mixed into as conduit it is characterised in that described piezoelectric layer upper surface sets
There is electrode coating, backing layer contains conducting medium, described electric wire connects piezoelectric layer upper surface electrode coating and backing layer respectively.
5. optics according to claim 1 and acoustics are mixed into as conduit it is characterised in that filling in described probing shell
Glue be conducting resinl, backing layer, matching layer contain conducting medium, and conducting resinl is not made electrical contact with matching layer, conducting resinl and the back of the body
Lining makes electrical contact with, and described electric wire is connected respectively to matching layer and glue.
6. optics according to claim 1 and acoustics are mixed into as conduit it is characterised in that filling in described probing shell
Glue be conducting resinl, described piezoelectric layer upper surface is provided with electrode coating, and backing layer contains conducting medium, conducting resinl and piezoelectric layer
Upper surface electrode coating does not make electrical contact with, and conducting resinl is made electrical contact with backing layer, and described electric wire is connected respectively to piezoelectric layer upper surface
Electrode coating and conducting resinl.
7. it is mixed into as conduit is it is characterised in that described optics is first according to the arbitrary described optics of Claims 1-4 and acoustics
Angle between the sonic propagation direction of the light wave propagation direction of the transmitting of part and electroacoustic transducer transmitting is less than 10 °.
8. optics according to claim 5 and acoustics are mixed into as conduit it is characterised in that the transmitting of described optical element
The angle in light wave propagation direction, the sonic propagation direction of electroacoustic transducer transmitting and catheter shaft is respectively 2 ° -10 °.
9. optics according to claim 3 and acoustics are mixed into as conduit it is characterised in that described backing layer contains can adjust
Section acoustic impedance scattered sound waves and the tungsten powder and the argentum powder that change electrical impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107642.7A CN106361295A (en) | 2016-12-06 | 2016-12-06 | Optical and acoustic mixed imaging conduit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107642.7A CN106361295A (en) | 2016-12-06 | 2016-12-06 | Optical and acoustic mixed imaging conduit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106361295A true CN106361295A (en) | 2017-02-01 |
Family
ID=57891966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611107642.7A Pending CN106361295A (en) | 2016-12-06 | 2016-12-06 | Optical and acoustic mixed imaging conduit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106361295A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113812973A (en) * | 2021-09-06 | 2021-12-21 | 江苏霆升科技有限公司 | Miniature ultrasonic transducer based on thermosensitive backing |
| CN113876357A (en) * | 2020-11-04 | 2022-01-04 | 科特有限责任公司 | Imaging and pressure sensing device and probe with slidable sleeve |
| US11793462B2 (en) | 2008-06-02 | 2023-10-24 | Lightlab Imaging, Inc. | Intravascular measurement and data collection systems, apparatus and methods |
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| US20070038114A1 (en) * | 2003-07-31 | 2007-02-15 | Couvillon Lucien A Jr | Ultrasonic imaging catheter |
| CN101594819A (en) * | 2006-11-08 | 2009-12-02 | 光学实验室成像公司 | Opto-acoustic imaging devices and method |
| CN103202711A (en) * | 2012-01-16 | 2013-07-17 | 三星麦迪森株式会社 | Ultrasonic probe and manufacturing method thereof |
| CN103210665A (en) * | 2011-01-28 | 2013-07-17 | 株式会社东芝 | Ultrasonic transducer, ultrasonic probe, and method for producing ultrasonic transducer |
| CN104367300A (en) * | 2007-01-19 | 2015-02-25 | 桑尼布鲁克健康科学中心 | Imaging probe with combined ultrasound and optical means of imaging |
| CN103462644B (en) * | 2012-06-07 | 2015-07-29 | 中国科学院深圳先进技术研究院 | Photoacoustic endoscope |
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| CN105032749A (en) * | 2015-07-09 | 2015-11-11 | 深圳市理邦精密仪器股份有限公司 | Multi-layer lamination ultrasonic transducer and manufacturing method thereof |
| CN105596027A (en) * | 2014-11-05 | 2016-05-25 | 香港理工大学深圳研究院 | Two-dimensional array ultrasonic transducer based on three-dimensional ultrasonic imaging and preparation method for same |
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- 2016-12-06 CN CN201611107642.7A patent/CN106361295A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070038114A1 (en) * | 2003-07-31 | 2007-02-15 | Couvillon Lucien A Jr | Ultrasonic imaging catheter |
| CN101594819A (en) * | 2006-11-08 | 2009-12-02 | 光学实验室成像公司 | Opto-acoustic imaging devices and method |
| CN104367300A (en) * | 2007-01-19 | 2015-02-25 | 桑尼布鲁克健康科学中心 | Imaging probe with combined ultrasound and optical means of imaging |
| CN103210665A (en) * | 2011-01-28 | 2013-07-17 | 株式会社东芝 | Ultrasonic transducer, ultrasonic probe, and method for producing ultrasonic transducer |
| CN103202711A (en) * | 2012-01-16 | 2013-07-17 | 三星麦迪森株式会社 | Ultrasonic probe and manufacturing method thereof |
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| CN105011890A (en) * | 2015-06-15 | 2015-11-04 | 深圳先进技术研究院 | Photo-acoustic endoscopic apparatus based on graded-index optical fiber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11793462B2 (en) | 2008-06-02 | 2023-10-24 | Lightlab Imaging, Inc. | Intravascular measurement and data collection systems, apparatus and methods |
| CN113876357A (en) * | 2020-11-04 | 2022-01-04 | 科特有限责任公司 | Imaging and pressure sensing device and probe with slidable sleeve |
| CN113876357B (en) * | 2020-11-04 | 2024-01-26 | 科特有限责任公司 | Imaging and pressure sensing device and probe with slidable sleeve |
| CN113812973A (en) * | 2021-09-06 | 2021-12-21 | 江苏霆升科技有限公司 | Miniature ultrasonic transducer based on thermosensitive backing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170201 |