CN105286800A - Mechanically rotating intravascular OCT (optical coherence tomography) imaging probe - Google Patents

Mechanically rotating intravascular OCT (optical coherence tomography) imaging probe Download PDF

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CN105286800A
CN105286800A CN 201510828852 CN201510828852A CN105286800A CN 105286800 A CN105286800 A CN 105286800A CN 201510828852 CN201510828852 CN 201510828852 CN 201510828852 A CN201510828852 A CN 201510828852A CN 105286800 A CN105286800 A CN 105286800A
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motor
probe
mechanical
imaging probe
rotor
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CN 201510828852
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Chinese (zh)
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彭珏
陈思平
秦志飞
彭小健
唐浒
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深圳大学
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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

一种机械旋转式血管内OCT成像探头 Rotating the vessel to a mechanical OCT imaging probe

技术领域 FIELD

[0001] 本发明涉及到血管内成像介入诊断及治疗装置技术领域,特别涉及一种尺寸微小的机械旋转式血管内0CT成像的光学扫查探头。 [0001] The present invention relates to the intravascular interventional imaging diagnosis and treatment device technology, and particularly relates to an optical one size within the tiny mechanical rotary vessel 0CT scanning imaging probe.

背景技术 Background technique

[0002] 光学相干层析技术(Optical coherence tomography,0CT)是光学断层扫描技术的一种,它利用了光的干涉原理,通常采用近红外光进行拍照,可以对光学散射介质如生物组织等进行扫描,获得三维微米级高分辨率的光学断面图像。 [0002] Optical coherence tomography (Optical coherence tomography, 0CT) is an optical tomography, which uses the principle of interference of light, usually photographed near-infrared light, an optical scattering medium such as a can or the like biological tissue scan, to obtain a three-dimensional micron resolution optical cross-sectional image. 0CT技术通过飞行时间法来对样品不同反射层的时间延迟进行测量,其核心是迈克尔逊低相干干涉仪,它利用参考光和组织的信号光脉冲序列间的干涉现象,来探测不同深度层组织结构,然后通过探头在横断面实现扫描,并将得到的信号经计算机处理,从而得到样品的断层图像。 0CT samples of different techniques for the time delay of the reflective layer was measured by a time of flight method, the core is a low-coherence Michelson interferometer, which uses interference phenomenon between the signal light and the reference optical pulse train tissue layer of tissue at different depths to detect structure, then achieved by scanning the probe in the cross section, and the resulting signal processed by computer to obtain a tomographic image of the sample. 商用的光学相干断层扫描系统有多种应用,尤其在眼科中可以获取视网膜的细节图像。 Commercial optical coherence tomography system has a variety of applications, especially in the ophthalmology may obtain details of the image of the retina. 最近,这种技术也用于心脏病学的研究,例如血管内0CT,可以对冠状动脉疾病进行诊断。 Recently, this technique is also used to study cardiology, such as intravascular 0CT, can diagnose coronary artery disease. 目前的血管内0CT导管与单阵元IVUS血管内超声导管一样,也需要机械旋转。 Currently within the vascular conduit 0CT IVUS a single array element IVUS catheters, as also the need for mechanical rotation. 通常,探头的旋转是通过外置的马达经过导丝连接来驱动的。 Typically, the rotation of the probe by an external motor via a drive connection to the guide wire. 机械旋转探头利用外置的马达和驱动轴旋转安装于导管顶端的平面反射镜,旋转速度通常为1800转/分,可以以每秒100帧的速度成像。 Mechanical rotation of the probe using an external motor and a drive shaft rotatably mounted in the catheter tip plane mirror, the rotational speed is generally 1800 rev / min, it may be imaged at a speed of 100 frames per second. 目前所用的导管均采用单轨形式,经0.014英寸的导引导丝送入需要成像的节段。 Currently used catheters are used in the form of a monorail, the guidewire of 0.014 inches into segments to be imaged. 因为导丝硬度较大,导管前端的单轨部分较短,导管也较柔软,因此通过扭曲和严重狭窄病变的能力相对较差,即使勉强通过也会因为扭矩传递与支撑力的下降而影响导丝的操控,此时可因导管的不均匀旋转而产生图像的变形。 Because the guidewire larger hardness, short front end portion of the catheter monorail catheter are more flexible, and therefore by twisting severe stenosis relatively poor ability, even barely decreased also because the torque transmission by the support force affecting guidewire manipulation, then the image may be deformed due to uneven rotation of the catheter.

发明内容 SUMMARY

[0003] 综上所述,本发明的目的是为了解决由于导管通过高度狭窄病变或弯曲血管段,驱动外力的不稳定性以及导管内壁的摩擦力,导致的探头的转速不稳定,成像图形旋转扭曲变形的技术问题,而提出一种机械旋转式血管内0CT成像探头。 [0003] As described above, an object of the present invention is to solve the speed instability due catheter through stenotic lesion or highly curved vessel segment, the driving force and the frictional force instability catheter wall, caused by the probe, rotating the imaging pattern twisting deformation of the technical problem, proposed 0CT imaging probe within a mechanical rotary vessel.

[0004] 为解决本发明所提出的技术问题,采用的技术方案为:一种机械旋转式血管内0CT成像探头,包括有探头导管,与探头导管端部套接的透光外壳,经探头导管置于透光外壳内的光纤,及设于透光外壳内与光纤对应的格林透镜;其特征在于:所述的透光外壳内还设有电磁马达;所述的电磁马达包括有马达定子和马达转子;马达定子与透光外壳内壁固定,马达定子与马达转子活动套接;马达转子为一个顶端设有与格林透镜对应的反光斜面的圆柱型磁体。 [0004] The technical problem solved by the present invention, the technical solutions used are: a mechanical rotary inner vessel 0CT imaging probe, the probe comprises a catheter, the probe end of the catheter is sleeved light-transmitting housing, after the catheter probe disposed in the light transmitting optical fiber housing, and the housing provided in the light transmitting optical fiber corresponding to GRIN lens; characterized in that: said housing further has a light-transmitting electromagnetic motor; the electromagnetic motor comprises a stator and a motor a motor rotor; motor stator fixed to an inner wall of the housing and the transparent, the motor stator and the motor rotor socket activity; the motor rotor is provided with a cylindrical reflecting inclined plane type magnet with a GRIN lens corresponding to the top.

[0005] 所述的马达定子包括有一组夹角为90度的双相绕组线圈。 The motor stator according to [0005] includes a set angle of 90 degrees bipolar winding coil.

[0006] 所述的马达转子顶端的反光斜面为镀于圆柱型磁体上的平面反射介质膜。 Reflecting inclined plane to the top rotor motor [0006] to the plane of the reflector is plated on the dielectric film cylindrical magnet.

[0007] 所述的马达转子顶端的反光斜面与马达转子轴向夹角为45度。 Axial reflecting inclined plane and the angle of the rotor of the motor [0007] the top of a motor rotor of 45 degrees.

[0008] 所述的探头导管直径在1.5 ~ 2 mm。 [0008] In the probe conduit diameter 1.5 ~ 2 mm.

[0009] 所述探头导管与格林透镜之间通过套于光纤上的聚四氟乙烯管相套接固定。 [0009] The sheathing is fixed with respect to the optical fiber through the sleeve between the polytetrafluoroethylene tube and the GRIN lens catheter probe.

[0010] 所述光纤为单模光纤。 [0010] The optical fiber is a single mode optical fiber.

[0011] 本发明的有益效果为:样品光从单模光纤射出并经格林透镜聚焦,最后被马达转子顶端反光斜面反射,垂直入射到血管壁,在电磁马达的驱动下使入射光实现对血管壁的360度旋转扫描。 [0011] Advantageous effects of the present invention are: the light emitted from the sample via a single mode fiber and the focusing GRIN lens, and finally the motor rotor to the top reflector reflecting inclined plane, perpendicularly incident on the blood vessel wall, vascular incident light to realize the electromagnetic motor is driven 360 degree rotation scanning wall. 可以搭建成一个闭环控制系统,引入微型的转速传感器植入微型转子的下端,实时测量转子的转动位置和转速,结合闭环控制系统,实现对转子转速的精确控制,并与成像系统实现同步。 Can be built into a closed loop control system, the introduction of the micro-miniature rotational speed sensor is implanted lower end of the rotor measured in real time the position and rotation speed of the rotor, in conjunction with closed-loop control system, accurate control of the rotor speed, and synchronization with the imaging system. 本发明将电磁马达内置,既能够完成对马达的精确控制,又可以避免传统外置马达连接导丝驱动探头转动带来的弊端,具有体积小、图像分辨率高、成像稳定性好等优点。 The present invention is an electromagnetic motor built, both to complete the precise control of the motor, and also avoid the conventional outboard motors connected to the probe driving rotation of the guidewire evils, small size, high image resolution, good image stability.

附图说明 BRIEF DESCRIPTION

[0012] 图1为本发明的剖视结构示意图; [0012] Fig 1 a schematic cross-sectional view of the structure of the present invention;

图2为本发明的电磁马达立体放大结构示意图; FIG electromagnetic motor 2 a perspective enlarged view of the structure of the present invention;

图3为本发明的电磁马达横截面放大结构示意图。 Electromagnetic motor 3 cross-sectional view of an enlarged schematic structural view of the present disclosure.

具体实施方式 detailed description

[0013] 以下结合附图和本发明优选的具体实施例对发明的结构作进一步地说明。 [0013] The following Examples in conjunction with the accompanying drawings and specific embodiments of the present invention are preferably of the structure of the invention will be further explained.

[0014] 参照图1至图3中所示,本发明机械旋转式血管内0CT成像探头包括有探头导管1,与探头导管1端部套接的透光外壳2,经探头导管1插入在透光外壳2内的单模光纤3,设于透光外壳2内与单模光纤对应的格林透镜4,以及设于透光外壳2内的电磁马达5。 [0014] As shown in FIGS. 1 through 3, the present invention is a rotary mechanical 0CT vascular imaging probe comprising a probe catheter 1, the catheter 1 with the probe end portion of the socket housing 2 of the light-transmitting, via a probe inserted through the catheter single-mode optical fiber in the housing 23, disposed in the single mode fiber 2 and the GRIN lens corresponding to 4, 5 and the electromagnetic motor is provided in the housing 2 in the translucent light-transmissive housing.

[0015] 探头导管1与格林透镜4之间通过套于单模光纤3上的聚四氟乙烯管6相套接固定。 Teflon tube [0015] 1 and the GRIN lens catheter probe between a single-mode fiber 4 through the sleeve 3 to 6 are fixed to the socket. 所述的电磁马达5包括有马达定子51和马达转子52 ;马达定子51与透光外壳2内壁固定,马达定子51与马达转子52活动套接;马达转子52为一个顶端设有与格林透镜4对应的反光斜面53的圆柱型磁体,马达转子52顶端的反光斜面53可以是镀于圆柱型磁体上的平面反射介质膜;马达转子52顶端的反光斜面53与马达转子轴向夹角优选为45度;马达定子51包括有一组夹角为90度的双相绕组线圈511、512。 The electromagnetic motor 5 comprises a motor stator 51 and motor rotor 52; motor stator 51 and the inner wall of the housing is fixed transmissive, motor stator 51 and the rotor 52 of the motor activity socket; to the top of the motor rotor 52 is provided with a GRIN lens 4 reflecting inclined plane corresponding to the cylindrical magnet 53, the tip of the motor rotor 52 may be reflecting inclined plane 53 to the plane of the reflective coating on the dielectric film cylindrical magnet; reflecting inclined plane to the top of the motor rotor 52 of the motor rotor 53 and the axial angle of preferably 45 degrees; motor stator 51 comprises a set of two-phase angle of 90 degrees winding coil 511, 512. 当一个相位差为90°的双相正弦交流信号加载在双相绕组线圈511、512上,两线圈511、512在正弦交流信号的作用下产生旋转磁场,马达转子52在旋转磁场的作用下随着交流信号的频率进行同步转动,样品光从单模光纤3射出并经格林透镜4聚焦,最后被马达转子52顶端反光斜面53反射,垂直入射到血管壁,在马达转子52进行360度旋转过程中,入射光实现对血管壁的360度旋转扫描。 When the two-phase sinusoidal AC signal of a phase difference of 90 ° in the loading duplex winding coil 511, 512, two coils 511 and 512 under the influence of a rotating magnetic field generated sinusoidal AC signal, the motor rotor 52 with the rotating magnetic field under the effect of the frequency of the AC signal is synchronously rotated, light emitted from the sample 3 and a single mode fiber by focusing GRIN lens 4, and finally the motor rotor 52 to the top reflector 53 reflecting inclined plane, perpendicularly incident to the vessel wall, 360 degree rotation of the motor rotor 52 the incident light 360 degree rotation scanning of the vascular wall.

[0016] 本发明无需外置的马达经过导丝连接来驱动内置的平面反射镜旋转,既能够完成对马达的精确控制,又可以避免传统外置马达连接导丝驱动探头转动带来的弊端。 [0016] The present invention does not require an external motor via a drive wire connected to the built-in rotating plane mirror, both to complete the precise control of the motor, and also avoid the drawbacks of the conventional outboard motors connected to the drive wire is rotated to bring the probe. 探头导管直径在1.5 ~ 2 _,本发明0CT成像探头前端的电磁马达5为细颈微型马达,马达定子51由极细的导线按一定排列绕成,如果技术及工艺条件允许,体积将做到更小,可实现对血管壁侧视360度0CT扫查成像;引入微型的转速传感器植入马达转子52的前端部,实时测量马达转子52的转动位置和转速,结合闭环控制系统,实现对转子转速的精确控制,并与成像系统实现同步。 Probe catheter diameter 1.5 ~ 2 _, 0CT imaging probe tip of the present invention is an electromagnetic motor 5 neck micro-motors, the motor stator 51 by a fine wire wound into a certain arrangement, and process technology if conditions permit, to achieve a volume less can be realized on a side wall of the vessel 360 0CT scan imaging; incorporated miniature implantable distal portion of the motor rotation speed sensor rotor 52, and real-time measurement of the rotational position of rotation of the motor rotor 52, in conjunction with closed-loop control system, rotor precise control of speed and synchronization with the imaging system.

Claims (7)

  1. 1.一种机械旋转式血管内OCT成像探头,包括有探头导管,与探头导管端部套接的透光外壳,经探头导管置于透光外壳内的光纤,及设于透光外壳内与光纤对应的格林透镜;其特征在于:所述的透光外壳内还设有电磁马达;所述的电磁马达包括有马达定子和马达转子;马达定子与透光外壳内壁固定,马达定子与马达转子活动套接;马达转子为一个顶端设有与格林透镜对应的反光斜面的圆柱型磁体。 A rotary mechanical Intravascular OCT imaging probe, the probe comprising a catheter, the catheter probe and the transparent housing end portion of the socket via the optical fiber probe placed inside the light-transmitting conduit housing, and housing and disposed in the light-transmissive GRIN lens corresponding to the optical fiber; wherein: said housing further has a light-transmitting electromagnetic motor; said electromagnetic motor includes a motor stator and a motor rotor; motor stator fixed to an inner wall of the housing and the transparent, the motor stator and the motor rotor activity socket; a motor rotor is provided with a cylindrical reflecting inclined plane type magnet with a GRIN lens corresponding to the top.
  2. 2.根据权利要求1所述的一种机械旋转式血管内OCT成像探头,其特征在于:所述的马达定子包括有一组夹角为90度的双相绕组线圈。 The rotary vessel within a mechanical OCT imaging probe according to claim 1, wherein: said motor comprises a stator having a winding coil set biphasic angle of 90 degrees.
  3. 3.根据权利要求1所述的一种机械旋转式血管内OCT成像探头,其特征在于:所述的马达转子顶端的反光斜面为镀于圆柱型磁体上的平面反射介质膜。 The rotary vessel within a mechanical OCT imaging probe according to claim 1, wherein: said motor rotor tip reflecting inclined plane to the plane of the reflective plated on the dielectric film cylindrical magnet.
  4. 4.根据权利要求1或3所述的一种机械旋转式血管内OCT成像探头,其特征在于:所述的马达转子顶端的反光斜面与马达转子轴向夹角为45度。 The rotary vessel within a mechanical or OCT imaging probe according to claim 13, wherein: the angle between the axial direction of the motor rotor of the motor top reflective inclined surface and the rotor is 45 degrees.
  5. 5.根据权利要求1所述的一种机械旋转式血管内OCT成像探头,其特征在于:所述的探头导管直径在1.5 ~ 2 mm。 The rotary vessel within a mechanical OCT imaging probe according to claim 1, wherein: said probe catheter diameter 1.5 ~ 2 mm.
  6. 6.根据权利要求1所述的一种机械旋转式血管内OCT成像探头,其特征在于:所述探头导管与格林透镜之间通过套于光纤上的聚四氟乙烯管相套接固定。 The rotary vessel within a mechanical OCT imaging probe according to claim 1, wherein: the conduit between the probe and the GRIN lens on the optical fiber through the sleeve with Teflon sheathing tube is fixed.
  7. 7.根据权利要求1所述的一种机械旋转式血管内OCT成像探头,其特征在于:所述光纤为单模光纤。 The rotary vessel within a mechanical OCT imaging probe according to claim 1, wherein: said optical fiber is a single mode optical fiber.
CN 201510828852 2015-11-25 2015-11-25 Mechanically rotating intravascular OCT (optical coherence tomography) imaging probe CN105286800A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
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

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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

Patent Citations (5)

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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 (1)

* Cited by examiner, † Cited by third party
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

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