CN105286800A - Mechanically rotating intravascular OCT (optical coherence tomography) imaging probe - Google Patents
Mechanically rotating intravascular OCT (optical coherence tomography) imaging probe Download PDFInfo
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- CN105286800A CN105286800A CN201510828852.4A CN201510828852A CN105286800A CN 105286800 A CN105286800 A CN 105286800A CN 201510828852 A CN201510828852 A CN 201510828852A CN 105286800 A CN105286800 A CN 105286800A
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Abstract
The invention provides a mechanically rotating intravascular OCT (optical coherence tomography) imaging probe and relates to a microsized mechanically rotating intravascular OCT imaging optical scanning probe, solving the technical problems of instability of the rotating speeds of probes and formed image rotational distortion caused due to instability of driving external forces and friction forces of inner walls of catheters when the catheters pass through high stenosis lesions or curved blood vessel segments. The probe comprises a probe catheter and a non-lighttight shell connected with the end of the probe catheter in a sleeving manner, wherein an electromagnetic motor is also arranged in the non-lighttight shell and comprises a motor stator and a motor rotor; the motor stator is fixed together with the inner wall of the non-lighttight shell; the motor stator is movably connected with the motor rotor in a sleeving manner; the motor rotor is a cylindrical magnet with a reflective bevel corresponding to a GRIN lens at the top end. The probe has the beneficial effects that by arranging the electromagnetic motor inside, not only can accurate control of the motor be completed but also the defects caused by connecting traditional outboard motors with guide wires to drive the probe to rotate can be avoided; the probe has the advantages of small volume, high image resolution, good imaging stability, and the like.
Description
Technical field
The present invention relates to Ink vessel transfusing imaging intervention diagnosis and therapy equipment technical field, the optics scanning probe of the particularly machinery rotating type Ink vessel transfusing OCT imaging that a kind of size is small.
Background technology
Optical coherence tomography (Opticalcoherencetomography, OCT) be the one of optical tomography technology, which utilizes interference of light principle, usual employing near infrared light is taken pictures, to optical scattering medium as biological tissue etc. is scanned, the high-resolution optical section image of three dimensional micron level can be obtained.OCT technology is measured by the time delay of time-of-flight method to the different reflecting layer of sample, its core is Michelson low coherence interferometer, it utilizes the interference between the signal pulse sequence of reference light and tissue, detect different depth layer tissue structure, then scanning is realized by probe in transverse section, and the signal machine process as calculated that will obtain, thus obtain the faultage image of sample.Commercial optical coherence tomography system has multiple application, especially can obtain amphiblestroid detail pictures in ophthalmology.Recently, this technology is also for the research of cardiology, and such as Ink vessel transfusing OCT, can diagnose coronary artery disease.Current Ink vessel transfusing OCT conduit is the same with single array element IVUS intravascular ultrasound catheter, also needs machinery to rotate.Usually, the rotation of probe is driven through seal wire connection by external motor.Machinery rotating detector utilizes external motor and driving shaft to rotate the plane mirror being installed on catheter tip, and rotary speed is generally 1800 revs/min, can with the velocity imaging of 100 frames per second.Conduit used at present all adopts monorail fashion, sends into the sections needing imaging through the guiding wire of 0.014 inch.Because seal wire hardness is larger, the single track part of catheter proximal end is shorter, conduit is also more soft, therefore relative with the ability of Serious Stenosis pathological changes poor by distortion, even if scrape the manipulation that also can affect seal wire because of the decline of moment of torsion transmission and support force, the distortion of image now can be produced because of the uneven rotation of conduit.
Summary of the invention
In sum, the object of the invention is to solve because conduit is by high degree stenosis pathological changes or curved blood vessel section, drive the unstability of external force and the frictional force of pipe inner wall, the rotary speed unstabilization of the probe caused is fixed, the technical problem of imaging figure rotation twist distortion, and a kind of machinery rotating type Ink vessel transfusing OCT imaging probe is proposed.
For solving technical problem proposed by the invention, the technical scheme adopted is: a kind of machinery rotating type Ink vessel transfusing OCT imaging probe, include probe catheter, the light transmitting shell be socketed with probe catheter end, be placed in the optical fiber in light transmitting shell through probe catheter, and be located at Green lens corresponding with optical fiber in light transmitting shell; It is characterized in that: in described light transmitting shell, be also provided with electromagnetic motor; Described electromagnetic motor includes motor stator and motor rotor; Motor stator and light transmitting shell inwall are fixed, motor stator and motor rotor pivot bush unit; Motor rotor is the cylindrical magnets that a top is provided with the reflective inclined-plane corresponding with Green lens.
Described motor stator includes the two-phase winding coil that one group of angle is 90 degree.
The reflective inclined-plane on described motor rotor top is the plane reflection deielectric-coating be plated in cylindrical magnets.
The reflective inclined-plane on described motor rotor top and the axial angle of motor rotor are 45 degree.
Described probe catheter diameter is at 1.5 ~ 2mm.
Socket-connected by the polyfluortetraethylene pipe be placed on optical fiber between described probe catheter and Green lens fixing.
Described optical fiber is single-mode fiber.
Beneficial effect of the present invention is: sample light penetrates from single-mode fiber and focuses on through Green lens, finally by the reflective slant reflection in motor rotor top, impinge perpendicularly on blood vessel wall, under the driving of electromagnetic motor, make the 360 degree rotation sweeps of incident illumination realization to blood vessel wall.A closed-loop control system can be built into, introduce the lower end of miniature speed probe implantable miniature rotor, measure turned position and the rotating speed of rotor in real time, in conjunction with closed-loop control system, realize the accurate control to rotor speed, and realize synchronous with imaging system.The present invention is built-in by electromagnetic motor, can either complete the accurate control to motor, traditional outboard motor can be avoided again to connect seal wire and drive probe to rotate the drawback brought, have the advantages such as volume is little, image resolution ratio is high, Iimaging Stability is good.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present invention;
Fig. 2 is the three-dimensional structure for amplifying schematic diagram of electromagnetic motor of the present invention;
Fig. 3 is electromagnetic motor cross section structure for amplifying schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and the preferred specific embodiment of the present invention, the structure to invention is further described.
Shown in Fig. 3, machinery rotating type Ink vessel transfusing OCT imaging probe of the present invention includes probe catheter 1, the light transmitting shell 2 be socketed with probe catheter 1 end, the single-mode fiber 3 in light transmitting shell 2 is inserted in through probe catheter 1, be located at Green lens 4 corresponding with single-mode fiber in light transmitting shell 2, and be located at the electromagnetic motor 5 in light transmitting shell 2.
Socket-connect fixing by the polyfluortetraethylene pipe 6 be placed on single-mode fiber 3 between probe catheter 1 and Green lens 4.Described electromagnetic motor 5 includes motor stator 51 and motor rotor 52; Motor stator 51 and light transmitting shell 2 inwall are fixed, motor stator 51 and motor rotor 52 pivot bush unit; Motor rotor 52 is the cylindrical magnets that a top is provided with the reflective inclined-plane 53 corresponding with Green lens 4, and the reflective inclined-plane 53 on motor rotor 52 top can be the plane reflection deielectric-coating be plated in cylindrical magnets; The reflective inclined-plane 53 on motor rotor 52 top is preferably 45 degree with the axial angle of motor rotor; Motor stator 51 includes the two-phase winding coil 511,512 that one group of angle is 90 degree.The two-phase sinusoidal ac signal being 90 ° when a phase contrast is carried on two-phase winding coil 511,512, two coils 511,512 produce rotating excitation field under the effect of sinusoidal ac signal, motor rotor 52 under the effect of rotating excitation field along with the frequency of AC signal carries out synchronous axial system, sample light penetrates from single-mode fiber 3 and focuses on through Green lens 4, finally reflected by reflective inclined-plane 53, motor rotor 52 top, impinge perpendicularly on blood vessel wall, carry out in 360 degree of rotary courses at motor rotor 52, incident illumination realizes 360 degree of rotation sweeps to blood vessel wall.
The present invention drives built-in plane mirror to rotate without the need to external motor through seal wire connection, can either complete the accurate control to motor, can avoid again the drawback that traditional outboard motor connection seal wire drives probe rotation to bring.Probe catheter diameter is at 1.5 ~ 2mm, the electromagnetic motor 5 of OCT imaging probe front end of the present invention is thin neck micromotor, motor stator 51 is coiled into by certain arrangement by superfine wire, if technology and process conditions allow, volume will be accomplished less, can realize blood vessel wall side-looking 360 degree of OCT scanning imagings; Introduce the leading section that motor rotor 52 implanted by miniature speed probe, measure turned position and the rotating speed of motor rotor 52 in real time, in conjunction with closed-loop control system, realize the accurate control to rotor speed, and realize synchronous with imaging system.
Claims (7)
1. a machinery rotating type Ink vessel transfusing OCT imaging probe, includes probe catheter, and the light transmitting shell be socketed with probe catheter end is placed in the optical fiber in light transmitting shell through probe catheter, and is located at Green lens corresponding with optical fiber in light transmitting shell; It is characterized in that: in described light transmitting shell, be also provided with electromagnetic motor; Described electromagnetic motor includes motor stator and motor rotor; Motor stator and light transmitting shell inwall are fixed, motor stator and motor rotor pivot bush unit; Motor rotor is the cylindrical magnets that a top is provided with the reflective inclined-plane corresponding with Green lens.
2. a kind of machinery rotating type Ink vessel transfusing OCT imaging probe according to claim 1, is characterized in that: described motor stator includes the two-phase winding coil that one group of angle is 90 degree.
3. a kind of machinery rotating type Ink vessel transfusing OCT imaging probe according to claim 1, is characterized in that: the reflective inclined-plane on described motor rotor top is the plane reflection deielectric-coating be plated in cylindrical magnets.
4. a kind of machinery rotating type Ink vessel transfusing OCT imaging probe according to claim 1 or 3, is characterized in that: the reflective inclined-plane on described motor rotor top and the axial angle of motor rotor are 45 degree.
5. a kind of machinery rotating type Ink vessel transfusing OCT imaging probe according to claim 1, is characterized in that: described probe catheter diameter is at 1.5 ~ 2mm.
6. a kind of machinery rotating type Ink vessel transfusing OCT imaging probe according to claim 1, be is characterized in that: socket-connected by the polyfluortetraethylene pipe be placed on optical fiber between described probe catheter and Green lens fixing.
7. a kind of machinery rotating type Ink vessel transfusing OCT imaging probe according to claim 1, is characterized in that: described optical fiber is single-mode fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510828852.4A CN105286800A (en) | 2015-11-25 | 2015-11-25 | Mechanically rotating intravascular OCT (optical coherence tomography) imaging probe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510828852.4A CN105286800A (en) | 2015-11-25 | 2015-11-25 | Mechanically rotating intravascular OCT (optical coherence tomography) imaging probe |
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| CN105286800A true CN105286800A (en) | 2016-02-03 |
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| CN201510828852.4A Pending CN105286800A (en) | 2015-11-25 | 2015-11-25 | Mechanically rotating intravascular OCT (optical coherence tomography) imaging probe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017147845A1 (en) * | 2016-03-03 | 2017-09-08 | 深圳大学 | Opto-acoustic integrated self-rotating endovascular imaging probe of built-in miniature motor type |
| CN108378823A (en) * | 2018-02-13 | 2018-08-10 | 天津恒宇医疗科技有限公司 | A kind of optical coherence tomography miniature probe of machine driving rotation |
| CN113712595A (en) * | 2021-08-30 | 2021-11-30 | 深圳嘉瑞电子科技有限公司 | Ultrasonic probe's drive arrangement and ultrasonic detection device |
| CN115429215A (en) * | 2022-11-09 | 2022-12-06 | 北京犀燃科技有限公司 | Intraocular OCT optical fiber probe |
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| CN1586402A (en) * | 2004-09-29 | 2005-03-02 | 清华大学 | Endoscopic optical tomographic imaging scanning probe device based on micro motor |
| US8764666B2 (en) * | 2008-10-28 | 2014-07-01 | The Regents Of The University Of California | Ultrasound guided optical coherence tomography, photoacoustic probe for biomedical imaging |
| CN103892871A (en) * | 2014-04-17 | 2014-07-02 | 深圳大学 | Mechanical rotation type intravascular ultrasonic probe |
| CN104977298A (en) * | 2015-06-13 | 2015-10-14 | 李洋 | Rotary type optical-acoustic combined imaging probe and conduit |
| CN205306957U (en) * | 2015-11-25 | 2016-06-15 | 深圳大学 | OCT formation of image probe in machinery rotation type blood vessel |
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2015
- 2015-11-25 CN CN201510828852.4A patent/CN105286800A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1586402A (en) * | 2004-09-29 | 2005-03-02 | 清华大学 | Endoscopic optical tomographic imaging scanning probe device based on micro motor |
| US8764666B2 (en) * | 2008-10-28 | 2014-07-01 | The Regents Of The University Of California | Ultrasound guided optical coherence tomography, photoacoustic probe for biomedical imaging |
| CN103892871A (en) * | 2014-04-17 | 2014-07-02 | 深圳大学 | Mechanical rotation type intravascular ultrasonic probe |
| CN104977298A (en) * | 2015-06-13 | 2015-10-14 | 李洋 | Rotary type optical-acoustic combined imaging probe and conduit |
| CN205306957U (en) * | 2015-11-25 | 2016-06-15 | 深圳大学 | OCT formation of image probe in machinery rotation type blood vessel |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017147845A1 (en) * | 2016-03-03 | 2017-09-08 | 深圳大学 | Opto-acoustic integrated self-rotating endovascular imaging probe of built-in miniature motor type |
| CN108378823A (en) * | 2018-02-13 | 2018-08-10 | 天津恒宇医疗科技有限公司 | A kind of optical coherence tomography miniature probe of machine driving rotation |
| CN108378823B (en) * | 2018-02-13 | 2023-04-28 | 天津恒宇医疗科技有限公司 | Mechanical transmission rotary optical coherence tomography miniature probe |
| CN113712595A (en) * | 2021-08-30 | 2021-11-30 | 深圳嘉瑞电子科技有限公司 | Ultrasonic probe's drive arrangement and ultrasonic detection device |
| CN113712595B (en) * | 2021-08-30 | 2022-05-27 | 深圳嘉瑞电子科技有限公司 | Ultrasonic probe's drive arrangement and ultrasonic detection device |
| CN115429215A (en) * | 2022-11-09 | 2022-12-06 | 北京犀燃科技有限公司 | Intraocular OCT optical fiber probe |
| CN115429215B (en) * | 2022-11-09 | 2023-03-24 | 北京犀燃科技有限公司 | Intraocular OCT optical fiber probe |
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