CN211270847U - Ultrasonic endoscope system and ultrasonic transducer - Google Patents

Ultrasonic endoscope system and ultrasonic transducer Download PDF

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CN211270847U
CN211270847U CN201922208849.9U CN201922208849U CN211270847U CN 211270847 U CN211270847 U CN 211270847U CN 201922208849 U CN201922208849 U CN 201922208849U CN 211270847 U CN211270847 U CN 211270847U
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ultrasonic
electrode
electrode layer
ultrasonic transducer
wafer
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马腾
黄继卿
李永川
王丛知
刘佳妹
刘项力
杨晔
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Shenzhen Institute of Advanced Technology of CAS
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Abstract

The utility model provides an ultrasonic transducer, the back lining ring outer peripheral face that the supersound wafer arranged around the annular, the inner electrode layer is located the inner circle of supersound wafer, let in the internal surface of electric pulse excitation supersound wafer, outer electrode layer is located the outer peripheral face of supersound wafer, let in the surface of electric pulse excitation supersound wafer, the electrode direction of inner electrode layer is arranged perpendicularly with the electrode direction of outer electrode layer, change at the excitation position of supersound wafer through inner electrode layer and outer electrode layer, can adjust ultrasonic transducer at circumference and focus position, thereby make ultrasonic transducer in the even unanimity of formation of image in the sound field region. The utility model also provides an ultrasonic endoscope system.

Description

超声波内窥镜系统和超声换能器Ultrasound Endoscopy Systems and Ultrasound Transducers

技术领域technical field

本实用新型涉及内窥镜技术领域,更具体地说,涉及一种超声波内窥镜系统和超声换能器。The utility model relates to the technical field of endoscopes, in particular to an ultrasonic endoscope system and an ultrasonic transducer.

背景技术Background technique

超声波内窥镜(Endoscopic Ultrasonography System,EUS)是一种集超声波与内镜检查为一身的医疗设备。当内镜进入体腔后,在内镜直视下对内脏器官壁或邻近脏器进行断层扫描,获得内脏器官壁黏膜以下各层次和周围邻近脏器的超声图像,如纵膈、胰腺、胆管及淋巴结等,它在胃肠道肿瘤的分期及判断肠壁起源肿瘤的性质方面具有极大的优势。Endoscopic Ultrasonography System (EUS) is a medical device that integrates ultrasound and endoscopy. After the endoscope enters the body cavity, tomography scan is performed on the internal organ wall or adjacent organs under the direct vision of the endoscope to obtain ultrasound images of the layers below the mucosa of the internal organ wall and surrounding adjacent organs, such as the mediastinum, pancreas, bile duct and It has great advantages in staging of gastrointestinal tumors and judging the nature of tumors originating from the intestinal wall.

早期的超声波内窥镜系统主要采用机械扫描方式,利用微型电机驱动连接杆,带动内窥镜顶端的单超声换能器实现360°旋转,获得与轴垂直的环形断层图像;这种扫描方式的优点在于换能器设计简单,但需要高精度的机械连接与驱动,易于损坏,获得的图像也不够稳定,但由于新技术的出现较晚,现在仍然大量使用。The early ultrasonic endoscope system mainly used a mechanical scanning method, using a micro-motor to drive the connecting rod to drive the single ultrasonic transducer at the top of the endoscope to rotate 360°, and obtain annular tomographic images perpendicular to the axis; The advantage is that the transducer is simple in design, but requires high-precision mechanical connection and drive, is easy to damage, and the obtained image is not stable enough, but due to the late emergence of new technologies, it is still widely used.

21世纪,日本富士、奥林巴斯、宾得等公司先后研发出360°电子环形扫描超声探头,结合采用全数字化图像处理技术的彩色多普勒超声诊断设备,实现了新型全数字化超声内窥镜成像系统。In the 21st century, Japan's Fuji, Olympus, Pentax and other companies have successively developed 360° electronic annular scanning ultrasound probes, combined with color Doppler ultrasound diagnostic equipment using fully digital image processing technology, to achieve a new type of fully digital ultrasound endoscope. imaging system.

360°环形超声内镜所用换能器一般由几十个~上百个长条状阵元组成,沿径向呈柱面均匀排列成一个圆周,阵列的外径一般不超过13mm,中心频率为3~15MHz,每个阵元独立出线,可利用电脉冲分别激励,获得360°环形扫描图像。这种方式不需要使用直流电机驱动,避免了机械环扫超声内镜的缺点。电子环扫式超声内镜适合大范围扫查,整体评估和判断等。The transducers used in the 360° annular ultrasound endoscope are generally composed of dozens to hundreds of elongated array elements, which are uniformly arranged in a circle along the radial direction. The outer diameter of the array is generally not more than 13mm, and the center frequency is 3 ~ 15MHz, each array element has an independent outlet, which can be excited by electrical pulses to obtain a 360° ring scan image. This method does not need to be driven by a DC motor, which avoids the shortcomings of mechanical ring-sweeping endoscopic ultrasound. Electronic ring scanning endoscopic ultrasonography is suitable for large-scale scanning, overall evaluation and judgment.

现有的超声波探头只是在扫描方向的1D线性阵列排布,因而只有在阵列方向上具有较好的电子聚焦能力,但在仰角方向(Elevation)上不能改变孔径尺寸,也不能实现聚焦,而1.5D相控阵列就可以改善这个问题。1.5D阵列在仰角方向上不仅能改变孔径尺寸,还能在仰角方向上实现声束聚焦,而能获得比1D线阵列较好的声学图像。分辨率也会比传统的1D线阵列探头更高。The existing ultrasonic probes are only arranged in a 1D linear array in the scanning direction, so they have good electronic focusing ability only in the array direction, but cannot change the aperture size in the elevation direction (Elevation), and cannot achieve focusing, while 1.5 D-phased arrays can improve this problem. The 1.5D array can not only change the aperture size in the elevation direction, but also realize the beam focusing in the elevation direction, and can obtain better acoustic images than the 1D line array. Resolution will also be higher than conventional 1D line array probes.

内窥镜超声换能器由于探测部位在人体内部,其客观因素上限制了换能器的尺寸不能做大,例如超声胃镜需要从口腔插入,穿过食道进入胃腔。一般情况下换能器及整个插入部分直径不能大于13mm,在做阵列式内窥镜检查时电缆线是需要连接换能器而一起进入人体内部的,而电缆线又有一定线径、当上百根电缆线拧成一股时、其整体尺寸及引线难度将是限值内窥镜往更多阵元数、更宽维度发展的重要因素。Because the detection part of the endoscopic ultrasonic transducer is inside the human body, the size of the transducer cannot be enlarged due to objective factors. For example, the ultrasonic gastroscope needs to be inserted from the mouth and through the esophagus into the stomach cavity. Under normal circumstances, the diameter of the transducer and the entire insertion part should not be greater than 13mm. When doing array endoscopy, the cable needs to be connected to the transducer and enter the human body together, and the cable has a certain wire diameter. When hundreds of cables are twisted together, their overall size and lead difficulty will be important factors limiting the development of endoscopes to more array elements and wider dimensions.

在医学超声领域中1.5D平面相控阵探头已得到了某些应用,但在超声内窥镜系统应用比较少,特别是360度环阵超声内窥系统是少之又少。其主要难点在于,在有限的空间内引出数量庞大的电缆线是一件非常困难的事情。In the field of medical ultrasound, 1.5D planar phased array probes have been used in some applications, but they are rarely used in ultrasound endoscopy systems, especially 360-degree annular array ultrasound endoscopy systems. The main difficulty is that it is very difficult to draw out a large number of cables in a limited space.

因此,如何提高超声换能器的成像效果,是目前本领域技术人员亟待解决的问题。Therefore, how to improve the imaging effect of the ultrasonic transducer is an urgent problem to be solved by those skilled in the art.

实用新型内容Utility model content

有鉴于此,本实用新型提供了一种超声换能器,以提高超声换能器的成像效果;本实用新型还提供了一种超声波内窥镜系统。In view of this, the utility model provides an ultrasonic transducer to improve the imaging effect of the ultrasonic transducer; the utility model also provides an ultrasonic endoscope system.

为了达到上述目的,本实用新型提供如下技术方案:In order to achieve the above object, the utility model provides the following technical solutions:

一种超声换能器,包括环形布置的背衬环和贴附于所述背衬环外圆周上的超声晶片,所述超声晶片的内圈布置有环绕所述背衬环的外圆周上的内电极层,所述超声晶片的外圈环绕其周向贴附有外电极层;An ultrasonic transducer includes an annularly arranged backing ring and an ultrasonic wafer attached to the outer circumference of the backing ring, the inner ring of the ultrasonic wafer is arranged with a ring around the outer circumference of the backing ring. an inner electrode layer, the outer ring of the ultrasonic wafer is attached with an outer electrode layer around its circumference;

所述内电极层的电极方向沿所述背衬环的轴向布置,所述外电极层的电极方向环绕所述背衬环的周向布置。The electrode direction of the inner electrode layer is arranged along the axial direction of the backing ring, and the electrode direction of the outer electrode layer is arranged around the circumference of the backing ring.

优选地,在上述超声换能器中,所述内电极层包括中心电极,和对称设置于所述中心电极两侧的多组侧电极;Preferably, in the above ultrasonic transducer, the inner electrode layer includes a central electrode, and multiple sets of side electrodes symmetrically arranged on both sides of the central electrode;

所述中心电极的宽度与每个所述侧电极的宽度比例布置。The width of the central electrode is arranged in proportion to the width of each of the side electrodes.

优选地,在上述超声换能器中,所述中心电极的宽度为每个所述侧电极的宽度的2倍。Preferably, in the above ultrasonic transducer, the width of the central electrode is twice the width of each of the side electrodes.

优选地,在上述超声换能器中,所述侧电极包括分别靠近所述中心电极内侧和外侧的第一侧电极和第二侧电极;Preferably, in the above ultrasonic transducer, the side electrodes include a first side electrode and a second side electrode that are close to the inner side and outer side of the central electrode, respectively;

所述内电极层包括由所述中心电极引出的中心引线,由所述第一侧电极引出的第一侧引线和由所述第二侧电极引出的第二侧引线。The internal electrode layer includes a center lead drawn from the center electrode, a first side lead drawn from the first side electrode, and a second side lead drawn from the second side electrode.

优选地,在上述超声换能器中,所述内电极层上引出有对所述超声晶片施加激励电场的地电极引线,所述外电极层上引出有对所述超声晶片施加激励电场的正电极引线。Preferably, in the above ultrasonic transducer, a ground electrode lead for applying an excitation electric field to the ultrasonic wafer is drawn from the inner electrode layer, and a positive electrode for applying an excitation electric field to the ultrasonic wafer is drawn from the outer electrode layer. electrode lead.

优选地,在上述超声换能器中,所述外电极层上并行布置有多个电极阵元,每个所述电极阵元上均引出有电极引线。Preferably, in the above ultrasonic transducer, a plurality of electrode array elements are arranged in parallel on the outer electrode layer, and electrode leads are drawn from each of the electrode array elements.

优选地,在上述超声换能器中,所述超声晶片包括多个长度方向沿所述背衬环轴向布置的长条状超声阵元,多个所述超声阵元环绕所述背衬环的周向均匀排列;Preferably, in the above ultrasonic transducer, the ultrasonic wafer includes a plurality of elongated ultrasonic array elements whose length directions are axially arranged along the backing ring, and a plurality of the ultrasonic array elements surround the backing ring Circumferentially evenly arranged;

所述超声晶片的外径不大于13mm,所述超声晶片的中心频率为3~15MHz。The outer diameter of the ultrasonic wafer is not greater than 13 mm, and the center frequency of the ultrasonic wafer is 3-15 MHz.

优选地,在上述超声换能器中,所述外电极层的外周还依次堆层布置有第一匹配层、第二匹配层和声透镜。Preferably, in the above ultrasonic transducer, a first matching layer, a second matching layer and an acoustic lens are further stacked and arranged on the outer periphery of the outer electrode layer in sequence.

一种超声波内窥镜系统,包括内窥镜超声激励系统、光学成像系统、显示器和穿刺针系统,所述穿刺针系统包括能够插入被检体内的插入部,设置于所述所述插入部前端的前段硬质部、折弯部和挠管部,所述前端硬质部内设置有环阵列超声波换能器,其特征在于,所述环阵列超声波换能器内设置有如上任意一项所述的超声换能器。An ultrasonic endoscope system includes an endoscopic ultrasonic excitation system, an optical imaging system, a display, and a puncture needle system, wherein the puncture needle system includes an insertion part that can be inserted into a subject, and is arranged at the front end of the insertion part The front hard part, the bending part and the flexible tube part are arranged in the front hard part, and the ring array ultrasonic transducer is arranged in the front hard part. of ultrasonic transducers.

优选地,在上述超声波内窥镜系统中,所述内窥镜超声激励系统包括分别对所述内电极层和所述外电极层进行激励的二级激励系统。Preferably, in the above ultrasonic endoscope system, the endoscope ultrasonic excitation system includes a secondary excitation system that excites the inner electrode layer and the outer electrode layer respectively.

本实用新型提供的超声换能器,包括环形布置的背衬环和贴附于背衬环外圆周上的超声晶片,超声晶片的内圈布置有环绕背衬环的外圆周上的内电极层,超声晶片的外圈环绕其周向贴附有外电极层;内电极层的电极方向沿背衬环的轴向布置,外电极层的电极方向环绕背衬环的周向布置。超声晶片环绕环形布置的背衬环外周面,内电极层位于超声晶片的内圈,通入电脉冲激励超声晶片的内表面,外电极层位于超声晶片的外周面,通入电脉冲激励超声晶片的外表面,内电极层的电极方向与外电极层的电极方向垂直布置,通过将内电极层和外电极层在超声晶片的激励位置变化,可对超声换能器在周向和聚焦位置进行调节,从而使得超声换能器在声场区域的成像均匀一致。The ultrasonic transducer provided by the utility model comprises a ring-shaped backing ring and an ultrasonic wafer attached to the outer circumference of the backing ring. The inner ring of the ultrasonic wafer is arranged with an inner electrode layer surrounding the outer circumference of the backing ring. , the outer ring of the ultrasonic wafer is attached with an outer electrode layer around its circumference; the electrode direction of the inner electrode layer is arranged along the axial direction of the backing ring, and the electrode direction of the outer electrode layer is arranged around the circumference of the backing ring. The ultrasonic wafer surrounds the outer peripheral surface of the annularly arranged backing ring, the inner electrode layer is located on the inner circle of the ultrasonic wafer, and the inner surface of the ultrasonic wafer is excited by the electric pulse, and the outer electrode layer is located on the outer peripheral surface of the ultrasonic wafer, and the ultrasonic wafer is excited by the electric pulse The outer surface of the inner electrode layer is arranged perpendicular to the electrode direction of the outer electrode layer. By changing the excitation position of the inner electrode layer and the outer electrode layer in the ultrasonic wafer, the ultrasonic transducer can be adjusted in the circumferential direction and the focusing position. Adjustment, so that the imaging of the ultrasonic transducer in the sound field area is uniform and consistent.

附图说明Description of drawings

为了更清楚地说明本实用新型实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本实用新型的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

图1为本实用新型提供的超声换能器的布置结构示意图;1 is a schematic diagram of the arrangement structure of an ultrasonic transducer provided by the utility model;

图2为图1中内电极层的展开结构示意图;Fig. 2 is the unfolded structure schematic diagram of the inner electrode layer in Fig. 1;

图3为图2中内电极层的电极线引出结构示意图;FIG. 3 is a schematic diagram of the electrode wire lead-out structure of the inner electrode layer in FIG. 2;

图4为图1中外电极层的展开结构示意图;FIG. 4 is a schematic view of the unfolded structure of the outer electrode layer in FIG. 1;

图5为本实用新型提供的超声波内窥镜系统的布置结构示意图;5 is a schematic diagram of the arrangement structure of the ultrasonic endoscope system provided by the present invention;

图6为图5中环阵列超声波换能器的端部结构示意图。FIG. 6 is a schematic diagram of the end structure of the ring array ultrasonic transducer in FIG. 5 .

具体实施方式Detailed ways

本实用新型公开了一种超声换能器,提高了超声换能器的成像效果;本实用新型还提供了一种超声波内窥镜系统。The utility model discloses an ultrasonic transducer, which improves the imaging effect of the ultrasonic transducer; the utility model also provides an ultrasonic endoscope system.

下面将结合本实用新型实施例中的附图,对本实用新型实施例中的技术方案进行清楚、完整的描述,显然,所描述的实施例仅仅是本实用新型一部分实施例,而不是全部的实施例。基于本实用新型的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本实用新型保护的范围。The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

如图1所示,图1为本实用新型提供的超声换能器的布置结构示意图。As shown in FIG. 1 , FIG. 1 is a schematic diagram of the arrangement structure of the ultrasonic transducer provided by the present invention.

本实施例提供了一种超声换能器,包括环形布置的背衬环1和贴附于背衬环1外圆周上的超声晶片2,超声晶片2的内圈布置有环绕背衬环1的外圆周上的内电极层3,超声晶片2的外圈环绕其周向贴附有外电极层4;内电极层3的电极方向沿背衬环1的轴向布置,外电极层4的电极方向环绕背衬环1的周向布置。超声晶片2环绕环形布置的背衬环1外周面,内电极层3位于超声晶片2的内圈,通入电脉冲激励超声晶片2的内表面,外电极层4位于超声晶片2的外周面,通入电脉冲激励超声晶片的外表面,内电极层3的电极方向与外电极层4的电极方向垂直布置,通过将内电极层3和外电极层4在超声晶片的激励位置变化,可对超声换能器在周向和聚焦位置进行调节,从而使得超声换能器在声场区域的成像均匀一致。This embodiment provides an ultrasonic transducer, which includes a backing ring 1 arranged in an annular shape and an ultrasonic wafer 2 attached to the outer circumference of the backing ring 1 . The inner electrode layer 3 on the outer circumference, the outer ring of the ultrasonic wafer 2 is attached with the outer electrode layer 4 around its circumference; the electrode direction of the inner electrode layer 3 is arranged along the axial direction of the backing ring 1, and the electrodes of the outer electrode layer 4 The directions are arranged around the circumference of the backing ring 1 . The ultrasonic wafer 2 surrounds the outer peripheral surface of the annularly arranged backing ring 1, the inner electrode layer 3 is located on the inner circle of the ultrasonic wafer 2, and the inner surface of the ultrasonic wafer 2 is excited by electric pulses, and the outer electrode layer 4 is located on the outer peripheral surface of the ultrasonic wafer 2, The outer surface of the ultrasonic wafer is excited by an electric pulse, and the electrode direction of the inner electrode layer 3 is arranged perpendicular to the electrode direction of the outer electrode layer 4. By changing the excitation position of the inner electrode layer 3 and the outer electrode layer 4 in the ultrasonic wafer, it can be The ultrasonic transducer is adjusted in the circumferential direction and the focus position, so that the imaging of the ultrasonic transducer in the sound field area is uniform and consistent.

如图2-图4所示,图2为图1中内电极层的展开结构示意图;图3为图2中内电极层的电极线引出结构示意图;图4为图1中外电极层的展开结构示意图。As shown in Fig. 2-Fig. 4, Fig. 2 is a schematic diagram of the unfolded structure of the inner electrode layer in Fig. 1; Fig. 3 is a schematic diagram of the electrode wire lead-out structure of the inner electrode layer in Fig. 2; Fig. 4 is the unfolded structure of the outer electrode layer in Fig. 1. Schematic.

在本案一具体实施例中,内电极层3包括中心电极33,和对称设置于中心电极两侧的多组侧电极;中心电极33的宽度与每个侧电极的宽度比例布置。内电极层3的电极方向沿背衬环1的轴向布置,将其内电极层设置中心电极33和对称位于中心电极33两侧的多组侧电极,每组侧电极包括分别对称位于中心电极33宽度方向两侧的两个侧电极,通过将中心电极33的宽度与每个侧电极的宽度按比例布置,可通过不同的电脉冲对沿超声换能器轴向方向不同深度的电极进行激励,对超声换能器的成像在其轴向进行调节,实现超声在不同深度上的聚焦。In a specific embodiment of the present case, the inner electrode layer 3 includes a central electrode 33 and multiple sets of side electrodes symmetrically arranged on both sides of the central electrode; the width of the central electrode 33 is arranged in proportion to the width of each side electrode. The electrode direction of the inner electrode layer 3 is arranged along the axial direction of the backing ring 1, and the inner electrode layer is provided with a central electrode 33 and a plurality of groups of side electrodes symmetrically located on both sides of the central electrode 33, and each group of side electrodes includes symmetrically located central electrodes. 33 The two side electrodes on both sides of the width direction, by arranging the width of the central electrode 33 in proportion to the width of each side electrode, the electrodes with different depths along the axial direction of the ultrasonic transducer can be excited by different electrical pulses , the imaging of the ultrasonic transducer is adjusted in its axial direction to realize the focusing of ultrasonic waves at different depths.

具体的,中心电极33的宽度为每个侧电极的宽度的2倍。适应1.5D超声波换能器径向成像要求,将中心电极33的宽度设置为侧电极的2倍,可利用同样尺寸的超声波换能器,实现1.5D替换1D的成像方案。Specifically, the width of the central electrode 33 is twice the width of each side electrode. To meet the radial imaging requirements of the 1.5D ultrasonic transducer, the width of the central electrode 33 is set to be twice that of the side electrodes, and an ultrasonic transducer of the same size can be used to realize the 1.5D to replace the 1D imaging scheme.

在本案一具体实施例中,侧电极包括分别靠近中心电极33内侧和外侧的第一侧电极32和第二侧电极31;内电极层3包括由中心电极33引出的中心引线Y3,由第一侧电极32引出的第一侧引线Y2和由第二侧电极31引出的第二侧引线Y1。适应超声换能器在医学上的成像要求,将中心电极33的两侧对称设置第一侧电极32和第二侧电极31,第一侧电极32包括对称位于中心电极33宽度方向两个,第二侧电极31同样包括对称位于中心电极的两个,并位于第一侧电极32的外侧。In a specific embodiment of this case, the side electrodes include a first side electrode 32 and a second side electrode 31 that are close to the inner and outer sides of the center electrode 33, respectively; the inner electrode layer 3 includes a center lead Y3 drawn from the center electrode 33, A first side lead Y2 drawn from the side electrode 32 and a second side lead Y1 drawn from the second side electrode 31 . To meet the medical imaging requirements of ultrasonic transducers, the first side electrodes 32 and the second side electrodes 31 are symmetrically arranged on both sides of the center electrode 33. The first side electrodes 32 include two symmetrically located in the width direction of the center electrode 33, The two side electrodes 31 also include two symmetrically located central electrodes and are located outside the first side electrodes 32 .

将内电极层3的电极引线,设置中心电极33单独引出中心引线Y3,第一侧电极32的两个引出电极线后合并为一根第一侧引线Y2,第二侧电极31的两个引出电极线后合并为一根第二侧引线Y1。The electrode leads of the inner electrode layer 3 and the center electrode 33 are set to lead out the center lead Y3 separately, the two lead-out electrode lines of the first side electrode 32 are combined into a first side lead Y2, and the two lead-out lines of the second side electrode 31 are combined into one first side lead Y2. The electrode lines are then merged into a second side lead Y1.

如图2和图3所示,内电极层33具有Y1、Y2和Y3三根电极引线,Y1为内电极层最外层第二侧电极31的第二侧引线,Y2为内电极层33的第一侧电极32的第一侧引线,Y3为中心电极33的中心引线,通过对Y1、Y2和Y3进行不同的电极激励,可在超声晶片在轴向上不同位置形成电场,实现对超声换能器的成像在轴向上进行深度调节。As shown in FIG. 2 and FIG. 3 , the internal electrode layer 33 has three electrode leads Y1 , Y2 and Y3 , Y1 is the second side lead of the second side electrode 31 of the outermost layer of the internal electrode layer, and Y2 is the second side lead of the second side electrode 31 of the outermost layer of the internal electrode layer 33 . The first side lead of one side electrode 32, Y3 is the center lead of the center electrode 33, by performing different electrode excitations on Y1, Y2 and Y3, an electric field can be formed at different positions of the ultrasonic wafer in the axial direction, and the ultrasonic transducer can be converted The imaging of the sensor is depth-adjusted in the axial direction.

在本案一具体实施例中,内电极层33上引出有对超声晶片施加激励电场的地电极引线,外电极层4上引出有对超声晶片施加激励电场的正电极引线。In a specific embodiment of the present case, the inner electrode layer 33 has a ground electrode lead that applies an excitation electric field to the ultrasonic wafer, and the outer electrode layer 4 has a positive electrode lead that applies an excitation electric field to the ultrasonic wafer.

在本案一具体实施例中,外电极层4上并行布置有多个电极阵元41,每个电极阵元41上均引出有电极引线。外电极层4的电极方向环绕背衬环1的周向,与内电极层3的轴向电极呈垂直布置结构,将外电极层4上设置并行布置的多个电极阵元41,每个电极阵元41上均设置电极引线,通过不同电极引线通入电脉冲,外电极层上环绕其周向不同位置的电极阵元受激励。In a specific embodiment of the present case, a plurality of electrode array elements 41 are arranged in parallel on the outer electrode layer 4 , and electrode leads are drawn from each electrode array element 41 . The electrode direction of the outer electrode layer 4 surrounds the circumferential direction of the backing ring 1, and is in a vertical arrangement with the axial electrodes of the inner electrode layer 3. A plurality of electrode array elements 41 arranged in parallel are arranged on the outer electrode layer 4. Each electrode Electrode leads are arranged on the array elements 41, and electrical pulses are passed through different electrode leads, and the electrode array elements on the outer electrode layer at different positions around its circumference are excited.

通过内电极层3上产生的激励电场在背衬块1的轴向进行位置调节,外电极层4上产生的激励电场在背衬块1的周向进行位置调节,二者对超声晶片共同激励位置产生超声波,即可实现超声波成像在深度方向聚焦和周向偏转,从而获得更好的图像质量。The position of the backing block 1 is adjusted by the excitation electric field generated on the inner electrode layer 3 in the axial direction of the backing block 1 , and the position of the excitation electric field generated on the outer electrode layer 4 is adjusted in the circumferential direction of the backing block 1 , and the two jointly excite the ultrasonic wafer. When ultrasonic waves are generated at the position, the ultrasonic imaging can be focused in the depth direction and deflected in the circumferential direction, so as to obtain better image quality.

在本案一具体实施例中,超声晶片2包括多个长度方向沿背衬环轴向布置的长条状超声阵元,多个超声阵元环绕所述背衬环的周向均匀排列;超声晶片的外径不大于13mm,超声晶片的中心频率为3~15MHz。In a specific embodiment of the present case, the ultrasonic wafer 2 includes a plurality of elongated ultrasonic array elements whose length directions are arranged in the axial direction of the backing ring, and the plurality of ultrasonic array elements are uniformly arranged around the circumference of the backing ring; the ultrasonic wafer The outer diameter of the ultrasonic chip is not more than 13mm, and the center frequency of the ultrasonic chip is 3-15MHz.

超声晶片采用长条状超声阵元,每个超声阵元的长度应与内电极层的宽度和外电极层的宽度一致,同时,适应超声换能器在超声波内窥镜系统上进行医学应用,超声晶片的外径设置不大于13mm,超声晶片的中心频率为3~15MHz,从而可用本实施例中具有内电极层和外电极层的超声换能器,替换现有的超声换能器,实现利用现有的超声波内窥镜系统实现1.5D相控阵列替换1D陈列的成像方案。The ultrasonic chip adopts long strip ultrasonic array elements, and the length of each ultrasonic array element should be consistent with the width of the inner electrode layer and the width of the outer electrode layer. The outer diameter of the ultrasonic wafer is set to be no greater than 13 mm, and the center frequency of the ultrasonic wafer is 3 to 15 MHz, so that the ultrasonic transducer with the inner electrode layer and the outer electrode layer in this embodiment can be used to replace the existing ultrasonic transducer to realize Using the existing ultrasonic endoscope system to realize the imaging scheme of replacing the 1D array with 1.5D phased array.

具体地,如图2-图4所示,内电极层3由中间电极、第一侧电极和第二侧电极组成,将内电极层的电极方向设置为Y向,其电极引出线包括内层中间引线Y3、内收的两行第一侧电极的第一侧引线Y2和最边上两行第二侧电极的第二侧引线Y1三根电极引线,将外电极层4的电极方向设置为X向,电极阵元41编号从左往右顺序为X1、X2、X3···Xn,Y向通入地电极脉冲,X向通入正电极脉冲,X向和Y向组合为卷绕在背衬块1周向的位置阵列,超声换能器具有N+3条电极引线,实际可编码的阵元数为3N,从而在通过正电极引线和地电极引线进行阵元操控时,可在由X向和Y向组成的行列上进行寻址式激励,实现Y向近场、中场、远场的深度聚焦和X向的焦点偏转,在医学上获得更高质量、更全的图像信息,通过行列寻址的引线方式又能很好的解决多阵元阵列引线上的问题。Specifically, as shown in FIG. 2-FIG. 4, the inner electrode layer 3 is composed of a middle electrode, a first side electrode and a second side electrode, the electrode direction of the inner electrode layer is set to the Y direction, and the electrode lead wires of the inner electrode layer include the inner layer The middle lead Y3, the first side lead Y2 of the first side electrodes in the two rows inward, and the second side lead Y1 of the two rows of the second side electrodes on the most edge are three electrode leads, and the electrode direction of the outer electrode layer 4 is set as X The numbers of the electrode array elements 41 from left to right are X1, X2, X3... The circumferential position array of pad 1, the ultrasonic transducer has N+3 electrode leads, and the actual number of coded array elements is 3N, so when the array element is controlled by the positive electrode lead and the ground electrode lead, it can be controlled by the positive electrode lead and the ground electrode lead. Addressed excitation is performed on the rows and columns formed by the X and Y directions to achieve deep focusing in the near field, mid field and far field of the Y direction and focus deflection in the X direction, and obtain higher quality and more complete image information in medicine. The routing method of row and column addressing can also solve the problem on the routing of the multi-array element array very well.

在本案一具体实施例中,外电极层4的外周还依次堆层布置有第一匹配层、第二匹配层和声透镜6。适应超声波内窥镜系统的结构布置要求,可在外电极层4外圈环绕布置匹配层5和声透镜6,满足超声换能器的结构要求,当然,堆层结构可根据超声换能器的实际结构进行增减。In a specific embodiment of this case, a first matching layer, a second matching layer and an acoustic lens 6 are further stacked on the outer circumference of the outer electrode layer 4 in order. To meet the structural arrangement requirements of the ultrasonic endoscope system, the matching layer 5 and the acoustic lens 6 can be arranged around the outer ring of the outer electrode layer 4 to meet the structural requirements of the ultrasonic transducer. Of course, the stack structure can be based on the actual ultrasonic transducer. The structure is increased or decreased.

如图5和图6所示,图5为本实用新型提供的超声波内窥镜系统的布置结构示意图;图6为图5中环阵列超声波换能器的端部结构示意图。As shown in FIG. 5 and FIG. 6 , FIG. 5 is a schematic diagram of the arrangement structure of the ultrasonic endoscope system provided by the present invention; FIG. 6 is a schematic diagram of the end structure of the ring array ultrasonic transducer in FIG. 5 .

基于上述实施例中提供的超声换能器,本实用新型还提供了一种超声波内窥镜系统,包括内窥镜超声激励系统12、光学成像系统13、显示器51和穿刺针系统52,穿刺针系统52包括能够插入被检体内的插入部23,设置于插入部23前端的前段硬质部20、折弯部21和挠管部22,前端硬质部20内设置有环阵列超声波换能器201,该环阵列超声波换能器201内设有如上述实施例中提供的超声换能器。Based on the ultrasonic transducer provided in the above-mentioned embodiment, the present invention also provides an ultrasonic endoscope system, which includes an endoscopic ultrasonic excitation system 12, an optical imaging system 13, a display 51 and a puncture needle system 52. The puncture needle The system 52 includes an insertion part 23 that can be inserted into the subject, a front-end rigid part 20 , a bending part 21 and a flexible tube part 22 arranged at the front end of the insertion part 23 , and a ring array ultrasonic transducer is arranged in the front-end rigid part 20 . 201, the ring array ultrasonic transducer 201 is provided with the ultrasonic transducer provided in the above embodiment.

前端硬质部20的端部设置喷水孔202,喷气孔203,穿刺孔204,光源205为光学摄像机206提供照明,取样时,前端硬质部20进入被检体内,穿刺针30由穿刺孔204内伸出取活检样本。The end of the front end rigid part 20 is provided with a water spray hole 202, an air injection hole 203, and a puncture hole 204. The light source 205 provides illumination for the optical camera 206. When sampling, the front end hard part 20 enters the body of the subject, and the puncture needle 30 passes through the puncture hole. 204 is extended to take a biopsy sample.

由于该超声波内窥镜系统采用了上述实施例的超声换能器,所以该超声波内窥镜系统由超声换能器带来的有益效果请参考上述实施例。Since the ultrasonic endoscope system adopts the ultrasonic transducer of the above-mentioned embodiment, the beneficial effects brought by the ultrasonic endoscope system of the ultrasonic endoscope system can be referred to the above-mentioned embodiment.

在本案一具体实施例中,内窥镜超声激励系统包括分别对内电极层和外电极层进行激励的二级激励系统。通过将内窥镜超声激励系统设置地电极激励系统和正电极激励系统,满足内电机层和外电极层的寻址式激励要求,满足超声波内窥镜系统的1.5D工作需求。In a specific embodiment of the present application, the endoscopic ultrasonic excitation system includes a secondary excitation system that excites the inner electrode layer and the outer electrode layer respectively. By setting the endoscope ultrasonic excitation system with the ground electrode excitation system and the positive electrode excitation system, the addressable excitation requirements of the inner motor layer and the outer electrode layer are met, and the 1.5D work requirements of the ultrasonic endoscope system are met.

对所公开的实施例的上述说明,使本领域专业技术人员能够实现或使用本实用新型。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本实用新型的精神或范围的情况下,在其它实施例中实现。因此,本实用新型将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1.一种超声换能器,其特征在于,包括环形布置的背衬环和贴附于所述背衬环外圆周上的超声晶片,所述超声晶片的内圈布置有环绕所述背衬环的外圆周上的内电极层,所述超声晶片的外圈环绕其周向贴附有外电极层;1. An ultrasonic transducer, characterized in that it comprises an annularly arranged backing ring and an ultrasonic wafer attached to the outer circumference of the backing ring, wherein the inner ring of the ultrasonic wafer is arranged with a backing surrounding the backing. an inner electrode layer on the outer circumference of the ring, the outer ring of the ultrasonic wafer is attached with an outer electrode layer around its circumference; 所述内电极层的电极方向沿所述背衬环的轴向布置,所述外电极层的电极方向环绕所述背衬环的周向布置。The electrode direction of the inner electrode layer is arranged along the axial direction of the backing ring, and the electrode direction of the outer electrode layer is arranged around the circumference of the backing ring. 2.根据权利要求1所述的超声换能器,其特征在于,所述内电极层包括中心电极,和对称设置于所述中心电极两侧的多组侧电极;2. The ultrasonic transducer according to claim 1, wherein the inner electrode layer comprises a center electrode, and multiple groups of side electrodes symmetrically arranged on both sides of the center electrode; 所述中心电极的宽度与每个所述侧电极的宽度比例布置。The width of the central electrode is arranged in proportion to the width of each of the side electrodes. 3.根据权利要求2所述的超声换能器,其特征在于,所述中心电极的宽度为每个所述侧电极的宽度的2倍。3. The ultrasonic transducer of claim 2, wherein the width of the central electrode is twice the width of each of the side electrodes. 4.根据权利要求3所述的超声换能器,其特征在于,所述侧电极包括分别靠近所述中心电极内侧和外侧的第一侧电极和第二侧电极;4. The ultrasonic transducer according to claim 3, wherein the side electrode comprises a first side electrode and a second side electrode which are respectively close to the inner side and the outer side of the central electrode; 所述内电极层包括由所述中心电极引出的中心引线,由所述第一侧电极引出的第一侧引线和由所述第二侧电极引出的第二侧引线。The internal electrode layer includes a center lead drawn from the center electrode, a first side lead drawn from the first side electrode, and a second side lead drawn from the second side electrode. 5.根据权利要求1所述的超声换能器,其特征在于,所述内电极层上引出有对所述超声晶片施加激励电场的地电极引线,所述外电极层上引出有对所述超声晶片施加激励电场的正电极引线。5 . The ultrasonic transducer according to claim 1 , wherein a ground electrode lead for applying an excitation electric field to the ultrasonic wafer is drawn from the inner electrode layer, and a ground electrode lead is drawn from the outer electrode layer. 6 . The positive electrode lead of the ultrasonic wafer to apply the excitation electric field. 6.根据权利要求4所述的超声换能器,其特征在于,所述外电极层上并行布置有多个电极阵元,每个所述电极阵元上均引出有电极引线。6 . The ultrasonic transducer according to claim 4 , wherein a plurality of electrode array elements are arranged in parallel on the outer electrode layer, and electrode leads are drawn from each of the electrode array elements. 7 . 7.根据权利要求1所述的超声换能器,其特征在于,所述超声晶片包括多个长度方向沿所述背衬环轴向布置的长条状超声阵元,多个所述超声阵元环绕所述背衬环的周向均匀排列;7 . The ultrasonic transducer according to claim 1 , wherein the ultrasonic wafer comprises a plurality of elongated ultrasonic array elements whose length directions are axially arranged along the backing ring, and a plurality of the ultrasonic arrays. 8 . elements are evenly arranged around the circumference of the backing ring; 所述超声晶片的外径不大于13mm,所述超声晶片的中心频率为3~15MHz。The outer diameter of the ultrasonic wafer is not greater than 13 mm, and the center frequency of the ultrasonic wafer is 3-15 MHz. 8.根据权利要求1所述的超声换能器,其特征在于,所述外电极层的外周还依次堆层布置有第一匹配层、第二匹配层和声透镜。8 . The ultrasonic transducer according to claim 1 , wherein a first matching layer, a second matching layer and an acoustic lens are further stacked and arranged on the outer periphery of the outer electrode layer. 9 . 9.一种超声波内窥镜系统,包括内窥镜超声激励系统、光学成像系统、显示器和穿刺针系统,所述穿刺针系统包括能够插入被检体内的插入部,设置于所述插入部前端的前段硬质部、折弯部和挠管部,所述前端硬质部内设置有环阵列超声波换能器,其特征在于,所述环阵列超声波换能器内设置有如权利要求1-8中任意一项所述的超声换能器。9. An ultrasonic endoscope system, comprising an endoscopic ultrasonic excitation system, an optical imaging system, a display, and a puncture needle system, the puncture needle system comprising an insertion portion capable of being inserted into a subject, and disposed at the front end of the insertion portion The front hard part, the bending part and the flexible tube part are arranged in the front hard part, and the ring array ultrasonic transducer is arranged in the front hard part. The ultrasonic transducer of any one. 10.根据权利要求9所述的超声波内窥镜系统,其特征在于,所述内窥镜超声激励系统包括分别对所述内电极层和所述外电极层进行激励的二级激励系统。10 . The ultrasonic endoscope system according to claim 9 , wherein the endoscope ultrasonic excitation system comprises a secondary excitation system that excites the inner electrode layer and the outer electrode layer respectively. 11 .
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110772288A (en) * 2019-12-10 2020-02-11 深圳先进技术研究院 Ultrasonic endoscope system and ultrasonic transducer
CN115645013A (en) * 2022-12-29 2023-01-31 山东百多安医疗器械股份有限公司 Multi-mode tracheostomy device combined with electrocardio ultrasonic endoscope

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110772288A (en) * 2019-12-10 2020-02-11 深圳先进技术研究院 Ultrasonic endoscope system and ultrasonic transducer
CN115645013A (en) * 2022-12-29 2023-01-31 山东百多安医疗器械股份有限公司 Multi-mode tracheostomy device combined with electrocardio ultrasonic endoscope

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