CN115844460A

Movatterモバイル変換

Info

Publication number: CN115844460A
Application number: CN202211488617.3A
Authority: CN
Inventors: 梁胜; 吴伟文; 陈浚; 白晓淞
Original assignee: Innermedical Co ltd
Current assignee: Innermedical Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-28

Abstract

The invention discloses an outer sheath tube, a manufacturing method thereof and an ultrasonic probe, wherein the outer sheath tube is used for the ultrasonic probe and comprises a three-layer braided tube and a transparent tube which are connected together, and a transmission spring for arranging the ultrasonic probe is arranged in the three-layer braided tube; a piezoelectric wafer for arranging the ultrasonic probe in the transparent tube; the three-layer braided tube comprises a polymer inner layer, a metal wire braided layer and a polymer outer layer, wherein the metal wire braided layer is wrapped outside the polymer inner layer; the outer polymer layer is wrapped outside the metal wire braided layer; the thickness of the metallic braid is gradually reduced in a direction toward the transparent tube. Through weaving the wire weaving layer that the pipe axis direction set up the gradual change along the three-layer for the external diameter and the hardness of sheath pipe change along the axis gradually, and then convenient nimble ultrasonic probe of controlling, and be favorable to reducing drive spring's shake, be convenient for obtain better formation of image effect.

Description

Translated fromChinese

一种外鞘管及其制作方法、超声探头A kind of outer sheath tube and its manufacturing method, ultrasonic probe

技术领域technical field

本发明涉及医疗器械技术领域，特别是涉及一种外鞘管及其制作方法、超声探头。The invention relates to the technical field of medical devices, in particular to an outer sheath tube, a manufacturing method thereof, and an ultrasonic probe.

背景技术Background technique

随着现代医学技术的发展，超声影像技术被广泛应用于消化道、呼吸道等多个领域的影像诊断，极大地提高了医疗检查的检查精度。传统的医学检查过程中，医生只能从病人的表征判断病情，而内窥镜检查的方式可以深入人体，直接在病灶位置成像。内窥镜的成像一般通过向人体内植入一个超声小探头进行超声成像。由于生物组织对超声的散射和衰减极小，也就是说超声波对生物组织具有极好的穿透能力，所以超声探头能够实现几毫米至几厘米的超大深度成像，以便获得生物组织或器官的整体结构图像信息。超声小探头在进入人体后，为了达到目标位置，需要医生手动操作进行移动，而且成像过程中还需要旋转和移动。With the development of modern medical technology, ultrasound imaging technology is widely used in the imaging diagnosis of digestive tract, respiratory tract and other fields, which greatly improves the inspection accuracy of medical examination. In the traditional medical examination process, doctors can only judge the condition from the patient's symptoms, but the endoscopic examination method can go deep into the human body and directly image the lesion. Endoscopic imaging is generally performed by implanting a small ultrasonic probe into the human body for ultrasonic imaging. Since the scattering and attenuation of ultrasound by biological tissue is extremely small, that is to say, ultrasound has excellent penetrating ability to biological tissue, so the ultrasonic probe can achieve ultra-large depth imaging of several millimeters to several centimeters, in order to obtain the whole body of biological tissues or organs Structural image information. After entering the human body, the small ultrasonic probe needs to be moved manually by the doctor in order to reach the target position, and it needs to be rotated and moved during the imaging process.

但是，现有的超声探头中外鞘管设计均为同种强度的编织管，且直径和硬度等均恒定，这种设计导致了在适配内窥镜时候的外鞘管的介入过程不够灵活弯曲或者移动过程中经常存在卡顿；另外，外鞘管内的传动弹簧在高速转动过程中容易产生抖动，影响超声探头成像时的稳定性，增加了超声图像畸变等不良情况发生的概率。However, the outer sheath tubes in the existing ultrasonic probes are all braided tubes of the same strength, and the diameter and hardness are constant. This design leads to the inflexibility and bending of the outer sheath tube when fitting the endoscope. Or there are often jams during the moving process; in addition, the transmission spring in the outer sheath is prone to vibration during high-speed rotation, which affects the stability of the ultrasound probe during imaging and increases the probability of adverse events such as ultrasound image distortion.

因此，现有技术还有待于改进和发展。Therefore, the prior art still needs to be improved and developed.

发明内容Contents of the invention

鉴于上述现有技术的不足，本发明的目的在于提供一种外鞘管及其制作方法、超声探头，旨在解决现有的超声探头操作不灵活，而且成像过程中稳定性不足的问题。In view of the deficiencies in the prior art above, the purpose of the present invention is to provide an outer sheath and its manufacturing method, and an ultrasonic probe, aiming at solving the problems of inflexible operation and insufficient stability in the imaging process of the existing ultrasonic probe.

本发明的技术方案如下：Technical scheme of the present invention is as follows:

一种外鞘管，用于超声探头；其中，包括连接在一起的三层编织管和透明管，所述三层编织管内用于设置所述超声探头的传动弹簧；所述透明管内用于设置所述超声探头的压电晶片；所述三层编织管包括高分子内层、金属丝编织层和高分子外层，所述金属丝编织层包裹在所述高分子内层的外部；所述高分子外层包裹在所述金属丝编织层的外部；所述金属丝编织层的厚度沿朝向所述透明管的方向逐渐减小。An outer sheath tube for an ultrasonic probe; wherein, it includes a three-layer braided tube and a transparent tube connected together, the three-layer braided tube is used to set the transmission spring of the ultrasonic probe; the transparent tube is used to set the The piezoelectric wafer of the ultrasonic probe; the three-layer braided tube includes a polymer inner layer, a wire braided layer and a polymer outer layer, and the metal wire braided layer is wrapped outside the polymer inner layer; the The polymer outer layer is wrapped on the outside of the metal wire braiding layer; the thickness of the metal wire braiding layer gradually decreases along the direction toward the transparent tube.

所述的外鞘管，其中，所述金属丝编织层包括沿朝向所述透明管的方向依次设置的第一编织段、第二编织段、……、第N编织段；所述第一编织段由多条第一金属丝编织而成；所述第二编织段由多条第二金属丝编织而成；所述第N编织段由多条第N金属丝编织而成；所述第一金属丝的半径、所述第二金属丝的半径、所述第N金属丝的半径依次减小；N为大于2的正整数。The outer sheath tube, wherein, the wire braiding layer includes a first braiding segment, a second braiding segment, ..., the Nth braiding segment sequentially arranged along the direction toward the transparent tube; the first braiding The segment is braided by a plurality of first metal wires; the second braided segment is braided by a plurality of second metal wires; the Nth braided segment is braided by a plurality of Nth metal wires; the first The radius of the metal wire, the radius of the second metal wire, and the radius of the Nth metal wire decrease in sequence; N is a positive integer greater than 2.

所述的外鞘管，其中，所述第一金属丝、所述第二金属丝、……、所述第N金属丝均为不锈钢金属丝。The outer sheath tube, wherein, the first metal wire, the second metal wire, ..., the Nth metal wire are all stainless steel wires.

所述的外鞘管，其中，所述高分子内层包括三硝基苯酚层、聚四氟乙烯层、热塑性聚氨酯弹性体层、聚丙烯层、聚乙烯层中的一种或多种；所述高分子外层包括三硝基苯酚层、聚四氟乙烯层、热塑性聚氨酯弹性体层、聚丙烯层、聚乙烯层中的一种或多种。The outer sheath tube, wherein the polymer inner layer includes one or more of a trinitrophenol layer, a polytetrafluoroethylene layer, a thermoplastic polyurethane elastomer layer, a polypropylene layer, and a polyethylene layer; The polymer outer layer includes one or more of a trinitrophenol layer, a polytetrafluoroethylene layer, a thermoplastic polyurethane elastomer layer, a polypropylene layer, and a polyethylene layer.

所述的外鞘管，其中，所述透明管包括热塑性聚氨酯弹性体管材、透明三硝基苯酚管材、聚丙烯管材、聚四氟乙烯管材中的至少一种。The outer sheath tube, wherein the transparent tube includes at least one of thermoplastic polyurethane elastomer tubes, transparent trinitrophenol tubes, polypropylene tubes, and polytetrafluoroethylene tubes.

本申请还公开了一种外鞘管的制作方法，用于制造如上任一所述的外鞘管，其中，包括：The present application also discloses a method for manufacturing an outer sheath, which is used to manufacture the outer sheath as described above, including:

提供一高分子材料薄壁管套在内芯轴上；Provide a polymer material thin-walled tube sleeve on the inner mandrel;

在所述高分子材料薄壁管的外表面上按丝径逐渐减小的方式分段编织金属丝，制成金属丝编织层；Braiding metal wires in segments on the outer surface of the thin-walled polymer material tube in such a manner that the wire diameter gradually decreases to form a wire braided layer;

在所述金属丝编织层的外部嵌套一高分子材料薄壁管套，并在所述高分子材料薄壁管套外套上保护热缩管进行热熔，冷却后取下所述保护热缩管，制成三层编织管；A thin-walled polymer material sleeve is nested outside the braided wire layer, and the heat-shrinkable tube is protected on the thin-walled polymer material sleeve for thermal fusion, and the protective heat-shrinkable tube is removed after cooling. Tube, made of three-layer braided tube;

将透明管热熔固定在所述三层编织管的端部；The transparent tube is thermally fixed on the end of the three-layer braided tube;

取下所述内芯轴，完成制作。Take off described inner mandrel, finish making.

所述的外鞘管，其中，所述在所述高分子材料薄壁管的外表面上按丝径逐渐减小的方式分段编织金属丝，制成金属丝编织层的步骤，具体包括：The outer sheath tube, wherein the step of segmentally braiding metal wires on the outer surface of the thin-walled polymer material tube in such a manner that the wire diameter gradually decreases to form a wire braiding layer specifically includes:

选择丝径为0.1-1毫米的不锈钢金属圆丝或者丝径为0.1×0.2-0.8×1毫米的扁丝，以每英寸交叉数为25-75，1×2或者1×1的编织方式沿着所述高分子材料薄壁管的长度方向编织。Select stainless steel round wire with a wire diameter of 0.1-1 mm or flat wire with a wire diameter of 0.1×0.2-0.8×1 mm, and weave along the wire with a cross number of 25-75 per inch, 1×2 or 1×1 Weaving along the length direction of the thin-walled polymer material tube.

沿长度方向将所述高分子材料薄壁管均分为三段，使用卧式编织机选择丝径为0.5-1毫米的金属圆丝编织第一段，选择丝径为0.2-0.4毫米的金属圆丝编织第二段；再选择丝径为0.1毫米的金属圆丝编织第三段。Divide the polymer material thin-walled tube into three sections along the length direction, use a horizontal braiding machine to select the metal round wire with a wire diameter of 0.5-1 mm to weave the first section, and select a metal wire with a wire diameter of 0.2-0.4 mm. Weave the second section with round wire; then select the metal round wire with a wire diameter of 0.1 mm to weave the third section.

所述的外鞘管，其中，所述将透明管热熔固定在所述三层编织管的端部的步骤，具体包括：The outer sheath tube, wherein the step of thermally fixing the transparent tube on the end of the three-layer braided tube specifically includes:

依据压电晶片的超声速率选择匹配的透明管；Select the matching transparent tube according to the ultrasonic rate of the piezoelectric chip;

将选择的所述透明管通过热熔焊接机或者激光焊接机熔接到所述三层编织管的端部位置。The selected transparent tube is welded to the end position of the three-layer braided tube by a hot-melt welding machine or a laser welding machine.

本申请还公开了一种超声探头，其中，包括如上任一所述的外鞘管。The present application also discloses an ultrasonic probe, which includes any one of the above outer sheath tubes.

与现有技术相比，本发明实施例具有以下优点：Compared with the prior art, the embodiment of the present invention has the following advantages:

本发明公开的外鞘管应用在超声探头中，用于包裹超声探头的传动弹簧和压电晶片。通过设置三层编织管保护传动弹簧，并且在三层编织管的端部连接透明管，透明管的内腔放置压电晶片，以进行超声信号的发射和接收。具体的，三层编织管由医用高分子材料制成的内层和外层包夹中间的金属丝编织层组成，编织过程中不断改变金属丝的丝径，使得编织成的金属丝编织层的厚度沿着朝向透明管的方向逐渐减小，从而获得外径和硬度渐变的三层编织管，以提高超声探头弯曲、前进、后退等操作灵活度的需求，减少操作超声探头弯曲或者移动过程中的卡顿问题，有助于顺利移动超声探头到目标位置进行成像工作，缩短医护人员的操作时间。The outer sheath tube disclosed by the invention is applied in an ultrasonic probe, and is used for wrapping a transmission spring and a piezoelectric chip of the ultrasonic probe. The transmission spring is protected by setting three layers of braided tubes, and transparent tubes are connected at the ends of the three layers of braided tubes, and piezoelectric crystals are placed in the inner cavity of the transparent tubes to transmit and receive ultrasonic signals. Specifically, the three-layer braided tube is composed of an inner layer made of medical polymer materials and an outer layer sandwiching a metal wire braid in the middle. During the weaving process, the wire diameter of the metal wire is constantly changed, so that The thickness gradually decreases along the direction of the transparent tube, so as to obtain a three-layer braided tube with gradual changes in outer diameter and hardness, so as to improve the operational flexibility of the ultrasonic probe, such as bending, advancing, and retreating, and reduce the bending or moving process of the ultrasonic probe. It helps to smoothly move the ultrasound probe to the target position for imaging and shorten the operation time of medical staff.

另外，外鞘管的硬度是渐变的，可以更好地适应外鞘管内设置的传动弹簧，减少超声探头高速旋转过程中，由于传动弹簧抖动造成图像几何畸变或者图像效果不佳的问题发生，有利于超声探头稳定地发射和接收超声信号，提高成像效果。In addition, the hardness of the outer sheath tube is gradual, which can better adapt to the transmission spring set in the outer sheath tube, and reduce the problem of image geometric distortion or poor image effect caused by the vibration of the transmission spring during the high-speed rotation of the ultrasonic probe. It is beneficial for the ultrasonic probe to transmit and receive ultrasonic signals stably and improve the imaging effect.

附图说明Description of drawings

为了更清楚地说明本发明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发明中记载的一些实施例，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 technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments described in the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

图1为本发明中外鞘管的剖面图；Fig. 1 is the sectional view of outer sheath tube in the present invention;

图2为本发明中外鞘管的制作方法的流程图；Fig. 2 is the flow chart of the manufacturing method of outer sheath tube in the present invention;

图3至图7为本发明中外鞘管的制作工艺流程图。3 to 7 are flow charts of the manufacturing process of the outer sheath in the present invention.

其中，10、外鞘管；11、三层编织管；111、高分子内层；112、金属丝编织层；1121、第一编织段；1121a、第一金属丝；1122、第二编织段；1122a、第二金属丝；1123、第三编织段；1123a、第三金属丝；113、高分子外层；12、透明管；13、高分子材料薄壁管；14、内芯轴；15、高分子材料薄壁管套；16、保护热缩管。Among them, 10, outer sheath tube; 11, three-layer braided tube; 111, polymer inner layer; 112, metal wire braided layer; 1121, first braided segment; 1121a, first metal wire; 1122, second braided segment; 1122a, the second metal wire; 1123, the third weaving segment; 1123a, the third metal wire; 113, the polymer outer layer; 12, the transparent tube; 13, the polymer material thin-walled tube; 14, the inner mandrel; 15, Thin-walled sleeve of polymer material; 16. Protective heat shrinkable tube.

具体实施方式Detailed ways

为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整的描述，显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，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，都属于本发明保护的范围。In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

参阅图1，本发明申请的一实施例中，公开了一种外鞘管10，用于超声探头；其中，包括依次对接的三层编织管11和透明管12，所述三层编织管11内用于设置所述超声探头的传动弹簧；所述透明管12内用于设置所述超声探头的压电晶片；所述三层编织管11包括高分子内层111、金属丝编织层112和高分子外层113，所述金属丝编织层112包裹在所述高分子内层111的外部，并且所述金属丝编织层112的厚度沿朝向所述透明管12的方向逐渐减小；所述高分子外层113包裹在所述金属丝编织层112的外部。Referring to FIG. 1 , in an embodiment of the application of the present invention, anouter sheath 10 is disclosed, which is used for an ultrasonic probe; wherein, it includes a three-layerbraided tube 11 and atransparent tube 12 butted in sequence, and the three-layerbraided tube 11 The driving spring for setting the ultrasonic probe inside; the piezoelectric wafer for setting the ultrasonic probe inside thetransparent tube 12; the three-layerbraided tube 11 includes a polymerinner layer 111, awire braid 112 and The polymerouter layer 113, the metalwire braiding layer 112 is wrapped on the outside of the polymerinner layer 111, and the thickness of the metalwire braiding layer 112 gradually decreases along the direction toward thetransparent tube 12; The polymerouter layer 113 is wrapped on the outside of the wire braidedlayer 112 .

本实施例公开的外鞘管10应用在超声探头中，用于包裹超声探头的传动弹簧和压电晶片。通过设置三层编织管11保护传动弹簧，并且在三层编织管11的端部连接透明管12，透明管12的内腔放置压电晶片，以进行超声信号的发射和接收。传动弹簧与压电晶片焊接连接，超声探头工作时，传动弹簧在三层编织管11内转动，带动压电晶片转动，实现周向扫描。Theouter sheath 10 disclosed in this embodiment is applied in an ultrasonic probe, and is used to wrap the transmission spring and the piezoelectric chip of the ultrasonic probe. The transmission spring is protected by setting three layers ofbraided tube 11, and the end of the three layers ofbraided tube 11 is connected with atransparent tube 12, and the inner cavity of thetransparent tube 12 places a piezoelectric chip for transmitting and receiving ultrasonic signals. The transmission spring is welded and connected to the piezoelectric chip. When the ultrasonic probe is working, the transmission spring rotates in the three-layer braidedtube 11 to drive the piezoelectric chip to rotate to realize circumferential scanning.

具体的，本实施例中公开的三层编织管11由医用高分子材料制成的内层和外层，包夹中间的金属丝编织层112组成。编织过程中可以采用不断改变金属丝的丝径的编织方式，使得编织成的金属丝编织层112的厚度沿着朝向透明管12的方向逐渐减小，从而获得外径和硬度渐变的三层编织管11。该三层编织管11朝向所述透明管12的方向厚度越小，硬度越低，柔韧性更佳，提高超声探头介入过程中的灵活性，有助于顺利移动超声探头(即压电晶片)到目标位置进行成像工作，缩短医护人员的操作时间。Specifically, the three-layer braidedtube 11 disclosed in this embodiment is composed of an inner layer and an outer layer made of medical polymer materials, and a metal wire braidedlayer 112 in the middle. During the weaving process, the weaving method of constantly changing the wire diameter of the metal wire can be adopted, so that the thickness of the braided metalwire braid layer 112 gradually decreases along the direction toward thetransparent tube 12, thereby obtaining a three-layer braid with gradual changes in outer diameter andhardness Tube 11. The thinner the thickness of the three-layer braided tube 11 toward the direction of thetransparent tube 12, the lower the hardness and the better the flexibility, which improves the flexibility of the ultrasonic probe during intervention and helps to move the ultrasonic probe (ie piezoelectric chip) smoothly. Go to the target location for imaging work, shortening the operating time of medical staff.

传动弹簧是一种柔性结构，在强支撑时可以减小力矩，利于力的传动，方便医生操作超声探头进入腔体。弱支撑时可以降低传动弹簧的抖动，减小超声图像的畸变。因此，本实施例中三层编织管11的后端(即远离所述透明管12的方向)硬度强，起到强支撑的作用，有利于超声探头进入腔体，三层编织管11的前端(即靠近所述透明管12的方向)硬度低，可以降低传动弹簧的抖动，减小图像几何畸变的几率，提高成像效果。The transmission spring is a flexible structure, which can reduce the torque when it is strongly supported, which is conducive to the transmission of force and facilitates the doctor to operate the ultrasonic probe into the cavity. When the support is weak, the vibration of the transmission spring can be reduced, and the distortion of the ultrasonic image can be reduced. Therefore, the rear end of the three-layer braided tube 11 in this embodiment (that is, the direction away from the transparent tube 12) has strong hardness and plays a role of strong support, which is conducive to the entry of the ultrasonic probe into the cavity. The front end of the three-layer braided tube 11 (that is, the direction close to the transparent tube 12 ) has low hardness, which can reduce the vibration of the transmission spring, reduce the probability of geometric distortion of the image, and improve the imaging effect.

如图1所示，作为本实施例的一种实施方式，公开了所述金属丝编织层112包括沿朝向所述透明管12的方向依次设置的第一编织段1121、第二编织段1122、……、第N编织段1123；所述第一编织段1121由多条第一金属丝1121a编织而成；所述第二编织段1122由多条第二金属丝1122a编织而成；所述第N编织段1123由多条第N金属丝1123a编织而成；所述第一金属丝1121a的半径、所述第二金属丝1122a的半径、……、所述第N金属丝1123a的半径依次减小。As shown in FIG. 1 , as an implementation of this embodiment, it is disclosed that thewire braided layer 112 includes afirst braided segment 1121 , asecond braided segment 1122 , ..., theNth weaving segment 1123; thefirst weaving segment 1121 is braided by a plurality offirst metal wires 1121a; thesecond weaving segment 1122 is braided by a plurality ofsecond metal wires 1122a; The N braidedsection 1123 is braided by a plurality ofNth metal wires 1123a; the radius of thefirst metal wire 1121a, the radius of thesecond metal wire 1122a, ..., the radius of theNth metal wire 1123a decrease in sequence Small.

本实施例中N为大于2的正整数，优选的设置金属丝编织层112包括三段编织段，即N等于3，金属丝编织层112由第一编织段1121a、第二编织段1122a和第三编织段依次连接组成。In this embodiment, N is a positive integer greater than 2. Preferably, thewire braided layer 112 is set to include three braided sections, that is, N is equal to 3, and thewire braided layer 112 is composed of thefirst braided section 1121a, thesecond braided section 1122a and thesecond braided section 1122a. The three braided segments are connected sequentially.

本实施例中公开的金属丝编织层112通过设置多个编织段依次连接，不同的编织段分别由不同尺寸的多条金属丝编织而成，使三层编织管11整体的硬度沿轴向方向渐变。每个编织段只用一种丝径的金属丝，保证编织出的网状结构的结构硬度均匀；另外，每个编织段只用一种金属丝编织更容易操作，降低编织难度。The metalwire braiding layer 112 disclosed in this embodiment is connected sequentially by setting a plurality of braiding segments, and different braiding segments are respectively braided by multiple wires of different sizes, so that the overall hardness of the three-layer braided tube 11 is along the axial direction. gradient. Each weaving section only uses one kind of wire diameter wire to ensure uniform structural hardness of the woven mesh structure; in addition, each weaving section only uses one kind of metal wire to weave, which is easier to operate and reduces the difficulty of weaving.

具体的，作为本实施例的另一种实施方式，公开了所述第一金属丝1121a、所述第二金属丝1122a、……、所述第N金属丝1123a均为不锈钢金属丝。不锈钢的硬度大，而且韧性好，采用不锈钢金属丝编织成的金属丝编织层112可以起到良好的支撑作用。Specifically, as another implementation manner of this embodiment, it is disclosed that thefirst metal wire 1121a, thesecond metal wire 1122a, ..., and theNth metal wire 1123a are all stainless steel wires. Stainless steel has high hardness and good toughness, and thebraided wire layer 112 made of stainless steel wire can play a good supporting role.

需要说明的是，本实施例中只是例举金属丝编织层112采用不锈钢金属丝编织，但本发明的保护范围并不局限于此，其他类型的金属丝只要能达到本申请公开的技术效果，作为本发明构思的等同替换，也应在本申请保护的范围之内。It should be noted that, in this embodiment, the metalwire braiding layer 112 is only exemplified to be braided with stainless steel wires, but the scope of protection of the present invention is not limited thereto. As long as other types of metal wires can achieve the technical effects disclosed in this application, As an equivalent replacement of the concept of the present invention, it should also be within the protection scope of the present application.

具体的，作为本实施例的另一种实施方式，公开了所述高分子内层111包括三硝基苯酚层、聚四氟乙烯层、热塑性聚氨酯弹性体层、聚丙烯层、聚乙烯层中的一种或多种；所述高分子外层113包括三硝基苯酚层、聚四氟乙烯层、热塑性聚氨酯弹性体层、聚丙烯层、聚乙烯层中的一种或多种。本实施例中公开的这些医用高分子材料层为热塑性材料层，作为外鞘管10的内层和外层，在制作过程中，可以先嵌套形成高分子内层111、金属丝编织层112和高分子外层113的三层结构，然后通过热熔、热缩、覆膜等工艺可以使高分子内层111、金属丝编织层112和高分子外层113三层结构充分融合，形成结构一体化的外鞘管10，增强外鞘管10的力学性能。Specifically, as another implementation of this embodiment, it is disclosed that the polymerinner layer 111 includes a trinitrophenol layer, a polytetrafluoroethylene layer, a thermoplastic polyurethane elastomer layer, a polypropylene layer, and a polyethylene layer. One or more of them; the polymerouter layer 113 includes one or more of a trinitrophenol layer, a polytetrafluoroethylene layer, a thermoplastic polyurethane elastomer layer, a polypropylene layer, and a polyethylene layer. These medical polymer material layers disclosed in this embodiment are thermoplastic material layers, as the inner layer and outer layer of theouter sheath tube 10, during the manufacturing process, the polymerinner layer 111 and thewire braided layer 112 can be nested first. and the three-layer structure of the polymerouter layer 113, and then the three-layer structure of the polymerinner layer 111, thewire braided layer 112 and the polymerouter layer 113 can be fully fused through processes such as hot melting, heat shrinkage, and film coating to form a structure The integratedouter sheath tube 10 enhances the mechanical properties of theouter sheath tube 10 .

具体的，作为本实施例的另一种实施方式，公开了所述透明管12包括热塑性聚氨酯弹性体管材、透明三硝基苯酚管材、聚丙烯管材、聚四氟乙烯管材中的至少一种。本实施例中公开的透明管12一端封闭，另一端开口，开口的一端与三层编织管11对接，制作过程中透明管12内储存有耦合剂和压电晶片，依据透明管12与压电晶片之间的耦合剂声速度匹配要求选择热塑性聚氨酯弹性体管材、透明三硝基苯酚管材、聚丙烯管材和聚四氟乙烯管材中的至少一种作为透明管12，有利于获得良好的超声波穿透效果，便于提高超声成像的精度。Specifically, as another implementation of this embodiment, it is disclosed that thetransparent tube 12 includes at least one of thermoplastic polyurethane elastomer tubes, transparent trinitrophenol tubes, polypropylene tubes, and polytetrafluoroethylene tubes. One end of thetransparent tube 12 disclosed in this embodiment is closed, the other end is open, and one end of the opening is connected to the three-layer braided tube 11. During the manufacturing process, thetransparent tube 12 stores coupling agents and piezoelectric wafers. According to the relationship between thetransparent tube 12 and the piezoelectric The matching of the acoustic velocity of the couplant between wafers requires selecting at least one of thermoplastic polyurethane elastomer pipes, transparent trinitrophenol pipes, polypropylene pipes and polytetrafluoroethylene pipes as thetransparent pipe 12, which is conducive to obtaining good ultrasonic penetration. Through the effect, it is convenient to improve the accuracy of ultrasound imaging.

如图2所示，作为本申请的另一实施例，公开了一种外鞘管10的制作方法，用于制造如上任一所述的外鞘管10，其中，包括：As shown in FIG. 2 , as another embodiment of the present application, a method for manufacturing anouter sheath 10 is disclosed, which is used to manufacture theouter sheath 10 described above, which includes:

S100、如图3所示，提供一高分子材料薄壁管13套在内芯轴14上；S100. As shown in FIG. 3 , provide a polymer material thin-walled tube 13 to be sleeved on theinner mandrel 14;

S200、如图4所示，在所述高分子材料薄壁管13的外表面上按丝径逐渐减小的方式分段编织金属丝，制成金属丝编织层112；S200. As shown in FIG. 4 , weave metal wires in segments on the outer surface of the thin-walledpolymer material tube 13 in such a manner that the wire diameters gradually decrease to form awire braided layer 112;

S300、如图5所示，在所述金属丝编织层112的外部嵌套一高分子材料薄壁管套15，并在所述高分子材料薄壁管套15外套上保护热缩管16进行热熔，冷却后取下所述保护热缩管16，制成三层编织管11；S300. As shown in FIG. 5 , nest a thin-walledpolymer material sleeve 15 outside thebraided wire layer 112 , and protect the heat-shrinkable tube 16 on the outer coat of the thin-walledpolymer material sleeve 15 . Heat melting, take off the protective heat-shrinkable tube 16 after cooling, and make a three-layer braided tube 11;

S400、如图6所示，将透明管12热熔固定在所述三层编织管11的端部；S400. As shown in FIG. 6, heat-melt and fix thetransparent tube 12 on the end of the three-layer braided tube 11;

S500、如图7所示，取下所述内芯轴14，完成制作。S500, as shown in FIG. 7 , remove theinner mandrel 14 to complete the fabrication.

本实施例中公开的外鞘管10的制作方法操作步骤简单，只需要从内向外依次制作外鞘管10的三层结构，然后通过热熔的方式融合为一体。制作工艺简单，只需要内芯轴14和保护热缩管16辅助加工，需要的设备少，操作简单，而且加工良率高。制作过程中直接在高分子材料薄壁管13的表面上分段编织，即可形成厚度及外径渐变的金属丝编织层112，从而使最终制成的外鞘管10的硬度和外径渐变，方便超声探头的移动操作、提高成像效果。The manufacturing method of theouter sheath tube 10 disclosed in this embodiment has simple operation steps, and only needs to sequentially fabricate the three-layer structure of theouter sheath tube 10 from the inside to the outside, and then fuse them into one body through thermal fusion. The manufacturing process is simple, only theinner mandrel 14 and the protective heat-shrinkable tube 16 are needed for auxiliary processing, less equipment is required, the operation is simple, and the processing yield is high. During the production process, thebraided layer 112 of metal wires with gradual changes in thickness and outer diameter can be formed by directly braiding in sections on the surface of the thin-walledpolymer material tube 13, so that the hardness and outer diameter of the finalouter sheath tube 10 are gradually changed. , to facilitate the mobile operation of the ultrasound probe and improve the imaging effect.

具体的，作为本实施例的一种实施方式，公开了所述步骤S200具体包括：Specifically, as an implementation manner of this embodiment, it is disclosed that the step S200 specifically includes:

选择丝径为0.1-1毫米的不锈钢金属圆丝或者丝径为0.1×0.2-0.8×1毫米的扁丝，以每英寸交叉数为25-75，1×2或者1×1的编织方式沿着所述高分子材料薄壁管13的长度方向编织。Select stainless steel round wire with a wire diameter of 0.1-1 mm or flat wire with a wire diameter of 0.1×0.2-0.8×1 mm, and weave along the wire with a cross number of 25-75 per inch, 1×2 or 1×1 Weaving along the length direction of the thin-walledpolymer material tube 13.

本实施例中公开的外鞘管10用于超声探头，医学领域用于内窥镜的超声探头体积小，以便进入人体内的腔道中，所以超声探头的外鞘管10既需要一定的硬度，又需要足够的柔性，而且厚度方面还有一定要求。编织金属丝的时候，金属丝的材质、丝径、编织方式等都决定着外鞘管10最终的力学性能。实际操作过程中，采用丝径为0.1-1毫米的不锈钢金属圆丝或者丝径为0.1×0.2-0.8×1毫米的扁丝，以每英寸交叉数为25-75，1×2或者1×1的编织方式进行编织，可获得硬度合适的金属丝编织层112，配合高分子内层111和高分子外层113可以良好支撑和保护传动弹簧的正常工作。Theouter sheath tube 10 disclosed in this embodiment is used for an ultrasonic probe. The ultrasonic probe used for endoscopes in the medical field is small in size so as to enter the cavity in the human body. Therefore, theouter sheath tube 10 of the ultrasonic probe needs a certain hardness. It needs to be flexible enough, and there are certain requirements in terms of thickness. When braiding the metal wire, the material, wire diameter, weaving method, etc. of the metal wire all determine the final mechanical properties of theouter sheath tube 10 . In the actual operation process, use stainless steel round wire with a wire diameter of 0.1-1 mm or flat wire with a wire diameter of 0.1×0.2-0.8×1 mm, and the number of intersections per inch is 25-75, 1×2 or 1× 1, a metalwire braid layer 112 with suitable hardness can be obtained, and the polymerinner layer 111 and polymerouter layer 113 can well support and protect the normal operation of the transmission spring.

具体的，作为本实施例的另一种实施方式，公开了所述步骤S200具体包括：Specifically, as another implementation manner of this embodiment, it is disclosed that the step S200 specifically includes:

沿长度方向将所述高分子材料薄壁管13均分为三段，使用卧式编织机选择丝径为0.5-1毫米的金属圆丝编织第一段，选择丝径为0.2-0.4毫米的金属圆丝编织第二段；再选择丝径为0.1毫米的金属圆丝编织第三段。Divide the polymer material thin-walled tube 13 into three sections along the length direction, use a horizontal braiding machine to select the metal round wire with a wire diameter of 0.5-1 mm to weave the first section, and select a metal round wire with a wire diameter of 0.2-0.4 mm. Metal round wire weaves the second segment; then choose a metal round wire with a wire diameter of 0.1 mm to weave the third segment.

在其他实施例中，也可以根据需要设置所述第一段、所述第二段和所述第三段的长度，并不限定于三段长度相同的情况。In other embodiments, the lengths of the first segment, the second segment, and the third segment may also be set as required, and are not limited to the case where the three segments have the same length.

本实施例中通过沿着轴线方向逐渐变化编织用的金属圆丝的丝径，使得金属丝编织层112上每一段的外径和硬度变化明显，进一步地，使得外鞘管10的壁厚和外径逐渐变化，从而实现外鞘管10的硬度逐渐变化，可以满足临床使用中的各种要求。In this embodiment, by gradually changing the wire diameter of the metal round wire used for braiding along the axial direction, the outer diameter and hardness of each segment on thewire braided layer 112 change significantly, and further, the wall thickness and thickness of theouter sheath tube 10 The outer diameter changes gradually, so that the hardness of theouter sheath tube 10 changes gradually, which can meet various requirements in clinical use.

具体的，作为本实施例的另一种实施方式，公开了所述步骤S400具体包括：Specifically, as another implementation manner of this embodiment, it is disclosed that the step S400 specifically includes:

S401、依据压电晶片的超声速率选择匹配的透明管12；S401. Select a matchingtransparent tube 12 according to the ultrasonic rate of the piezoelectric chip;

S402、将选择的所述透明管12通过热熔焊接机或者激光焊接机熔接到所述三层编织管11的端部位置。S402. Weld the selectedtransparent tube 12 to the end position of the three-layer braided tube 11 by a hot-melt welding machine or a laser welding machine.

本实施例中公开的透明管12包裹在压电晶片外，而且压电晶片外部(即外鞘管内)填充有耦合剂，压电晶片射出和接收超声信号的过程中，超声信号都会经过透明管12，所以制作过程中就依据压电晶片的超声速率选择匹配材质的透明管12，可以减少透明管12对超声信号的阻挡，提高超声信号的穿透性，以便于获得更好的成像效果。Thetransparent tube 12 disclosed in this embodiment is wrapped outside the piezoelectric chip, and the outside of the piezoelectric chip (that is, the outer sheath) is filled with a coupling agent. During the process of emitting and receiving ultrasonic signals from the piezoelectric chip, the ultrasonic signal will pass through the transparent tube. 12. Therefore, in the production process, thetransparent tube 12 of matching material is selected according to the ultrasonic rate of the piezoelectric chip, which can reduce the obstruction of the ultrasonic signal by thetransparent tube 12, improve the penetration of the ultrasonic signal, and obtain better imaging effects.

另外，如图6所示，制作好三层编织管11后，可以在内芯轴和保护热缩管的保护下，直接通过热熔焊接机或者激光焊接机熔接透明管12，操作方便，便于快速加工成型。In addition, as shown in Figure 6, after the three-layer braided tube 11 is produced, thetransparent tube 12 can be welded directly by a hot-melt welding machine or a laser welding machine under the protection of the inner mandrel and the protective heat-shrinkable tube, which is easy to operate and convenient Rapid processing and prototyping.

作为本申请的另一实施例，公开了一种超声探头，其中，包括如上任一所述的外鞘管10。As another embodiment of the present application, an ultrasonic probe is disclosed, which includes theouter sheath tube 10 as described above.

综上所述，本申请公开了一种外鞘管10，用于超声探头；其中，包括连接在一起的三层编织管11和透明管12，所述三层编织管11内用于设置所述超声探头的传动弹簧；所述透明管12内用于设置所述超声探头的压电晶片；所述三层编织管11包括高分子内层111、金属丝编织层112和高分子外层113，所述金属丝编织层112包裹在所述高分子内层111的外部；所述高分子外层113包裹在所述金属丝编织层112的外部；所述金属丝编织层112的厚度沿朝向所述透明管12的方向逐渐减小。In summary, the present application discloses anouter sheath tube 10 for an ultrasonic probe; wherein, it includes a three-layer braided tube 11 and atransparent tube 12 connected together, and the three-layer braided tube 11 is used for setting the The transmission spring of the ultrasonic probe; the piezoelectric wafer for setting the ultrasonic probe in thetransparent tube 12; the three-layer braided tube 11 includes a polymerinner layer 111, awire braided layer 112 and a polymerouter layer 113 , the metalwire braiding layer 112 is wrapped on the outside of the polymerinner layer 111; the polymerouter layer 113 is wrapped on the outside of the metalwire braiding layer 112; the thickness of the metalwire braiding layer 112 is along the direction The direction of thetransparent tube 12 gradually decreases.

本实施例公开的外鞘管10应用在超声探头中，用于包裹超声探头的传动弹簧和压电晶片。通过设置三层编织管11保护传动弹簧，并且在三层编织管11的端部连接透明管12，透明管12的内腔放置压电晶片，以进行超声信号的发射和接收。Theouter sheath 10 disclosed in this embodiment is applied in an ultrasonic probe, and is used to wrap the transmission spring and the piezoelectric chip of the ultrasonic probe. The transmission spring is protected by setting three layers ofbraided tube 11, and the end of the three layers ofbraided tube 11 is connected with atransparent tube 12, and the inner cavity of thetransparent tube 12 places a piezoelectric chip for transmitting and receiving ultrasonic signals.

具体的，本实施例中公开的三层编织管11由医用高分子材料制成的内层和外层包夹中间的金属丝编织层112组成。编织过程中可以采用不断改变金属丝的丝径的编织方式，使得编织成的金属丝编织层112的厚度沿着朝向透明管12的方向逐渐减小，从而获得外径和硬度渐变的三层编织管11，以提高超声探头弯曲、前进、后退等操作的灵活性，减少操作超声探头弯曲或者移动过程中的卡顿问题，有助于顺利移动超声探头到目标位置进行成像工作，缩短医护人员的操作时间。另外，从整体上来说，设置外鞘管10的硬度是渐变的，可以更好地适应外鞘管10内设置的传动弹簧，减少传动弹簧抖动造成图像几何畸变或者成像效果不佳的问题发生，有利于超声探头稳定地发射和接收超声信号，提高成像效果。Specifically, the three-layer braided tube 11 disclosed in this embodiment is composed of an inner layer made of a medical polymer material and an outer layer sandwiching awire braided layer 112 in the middle. During the weaving process, the weaving method of constantly changing the wire diameter of the metal wire can be adopted, so that the thickness of the braided metalwire braid layer 112 gradually decreases along the direction toward thetransparent tube 12, thereby obtaining a three-layer braid with gradual changes in outer diameter andhardness Tube 11, to improve the flexibility of the ultrasonic probe bending, forward, backward and other operations, reduce the jamming problem during the operation of the ultrasonic probe bending or moving, help to smoothly move the ultrasonic probe to the target position for imaging work, and shorten the time for medical staff. operating time. In addition, on the whole, the hardness of theouter sheath tube 10 is set to be gradual, which can better adapt to the transmission spring provided in theouter sheath tube 10, and reduce the occurrence of geometric distortion of the image or poor imaging effect caused by the vibration of the transmission spring. It is beneficial for the ultrasonic probe to transmit and receive ultrasonic signals stably and improve the imaging effect.

需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互结合。It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

需要说明的是，本发明以外鞘管为例对本发明的具体结构及工作原理进行介绍，但本发明的应用并不以外鞘管为限，也可以应用到其它类似工件的生产和使用中。It should be noted that the specific structure and working principle of the present invention are introduced by taking the outer sheath as an example, but the application of the present invention is not limited to the outer sheath, and can also be applied to the production and use of other similar workpieces.

应当理解的是，本发明并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本发明的范围仅由所附的权利要求来限制。It should be understood that the present invention is not limited to the precise constructions which have been described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims

Translated fromChinese

1.一种外鞘管，用于超声探头；其特征在于，包括连接在一起的三层编织管和透明管，所述三层编织管内用于设置所述超声探头的传动弹簧；所述透明管内用于设置所述超声探头的压电晶片；1. a kind of outer sheath tube, is used for ultrasonic probe; It is characterized in that, comprises three layers of braided tube and transparent tube that are connected together, is used to arrange the drive spring of described ultrasonic probe in described three layers of braided tube; Described transparent A piezoelectric wafer for setting the ultrasonic probe in the tube;

其中，所述三层编织管包括高分子内层、金属丝编织层和高分子外层，所述金属丝编织层包裹在所述高分子内层的外部；所述高分子外层包裹在所述金属丝编织层的外部；所述金属丝编织层的厚度沿朝向所述透明管的方向逐渐减小。Wherein, the three-layer braided tube includes a polymer inner layer, a wire braided layer and a polymer outer layer, the metal wire braided layer is wrapped outside the polymer inner layer; the polymer outer layer is wrapped around the polymer outer layer The outer part of the metal wire braiding layer; the thickness of the metal wire braiding layer gradually decreases along the direction toward the transparent tube.

2.根据权利要求1所述的外鞘管，其特征在于，所述金属丝编织层包括沿朝向所述透明管的方向依次设置的第一编织段、第二编织段、……、第N编织段；所述第一编织段由多条第一金属丝编织而成；所述第二编织段由多条第二金属丝编织而成；所述第N编织段由多条第N金属丝编织而成；2. The outer sheath according to claim 1, wherein the braided wire layer comprises a first braided segment, a second braided segment, ..., the Nth braided segment arranged in sequence along the direction toward the transparent tube Braided segment; the first braided segment is braided by a plurality of first metal wires; the second braided segment is braided by a plurality of second metal wires; the Nth braided segment is braided by a plurality of Nth metal wires woven;

其中，所述第一金属丝的半径、所述第二金属丝的半径、……、所述第N金属丝的半径依次减小；Wherein, the radius of the first metal wire, the radius of the second metal wire, ..., the radius of the Nth metal wire decrease in sequence;

N为大于2的正整数。N is a positive integer greater than 2.

3.根据权利要求2所述的外鞘管，其特征在于，所述第一金属丝、所述第二金属丝、……、所述第N金属丝均为不锈钢金属丝。3. The outer sheath according to claim 2, characterized in that, the first metal wire, the second metal wire, ..., the Nth metal wire are all stainless steel wires.

4.根据权利要求1所述的外鞘管，其特征在于，所述高分子内层包括三硝基苯酚层、聚四氟乙烯层、热塑性聚氨酯弹性体层、聚丙烯层、聚乙烯层中的一种或多种；4. The outer sheath according to claim 1, wherein the polymer inner layer comprises a trinitrophenol layer, a polytetrafluoroethylene layer, a thermoplastic polyurethane elastomer layer, a polypropylene layer, and a polyethylene layer. one or more of

所述高分子外层包括三硝基苯酚层、聚四氟乙烯层、热塑性聚氨酯弹性体层、聚丙烯层、聚乙烯层中的一种或多种。The polymer outer layer includes one or more of a trinitrophenol layer, a polytetrafluoroethylene layer, a thermoplastic polyurethane elastomer layer, a polypropylene layer, and a polyethylene layer.

5.根据权利要求1所述的外鞘管，其特征在于，所述透明管包括热塑性聚氨酯弹性体管材、透明三硝基苯酚管材、聚丙烯管材、聚四氟乙烯管材中的至少一种。5. The outer sheath according to claim 1, wherein the transparent tube comprises at least one of thermoplastic polyurethane elastomer tubes, transparent trinitrophenol tubes, polypropylene tubes, and polytetrafluoroethylene tubes.

6.一种外鞘管的制作方法，用于制造如权利要求1至5任意一项所述的外鞘管，其特征在于，包括：6. A method for manufacturing an outer sheath tube, used to manufacture the outer sheath tube according to any one of claims 1 to 5, characterized in that, comprising:

7.根据权利要求6所述的外鞘管的制作方法，其特征在于，所述在所述高分子材料薄壁管的外表面上按丝径逐渐减小的方式分段编织金属丝，制成金属丝编织层的步骤，具体包括：7. The manufacturing method of the outer sheath tube according to claim 6, characterized in that, the said polymer material thin-walled tube is braided in segments in a manner that the wire diameter gradually decreases on the outer surface of said polymer material thin-walled tube, The step of forming a wire braided layer specifically includes:

8.根据权利要求6或7所述的外鞘管的制作方法，其特征在于，所述在所述高分子材料薄壁管的外表面上按丝径逐渐减小的方式分段编织金属丝，制成金属丝编织层的步骤，具体包括：8. The manufacturing method of the outer sheath tube according to claim 6 or 7, characterized in that, the braiding of metal wires in sections in a manner that the wire diameter gradually decreases on the outer surface of the thin-walled polymer material tube , the step of making the wire braided layer specifically includes:

9.根据权利要求6所述的外鞘管的制作方法，其特征在于，所述将透明管热熔固定在所述三层编织管的端部的步骤，具体包括：9. The manufacturing method of the outer sheath tube according to claim 6, wherein the step of heat-melting and fixing the transparent tube on the end of the three-layer braided tube specifically comprises:

10.一种超声探头，其特征在于，包括如权利要求1至5任意一项所述的外鞘管。10. An ultrasonic probe, characterized by comprising the outer sheath according to any one of claims 1-5.