CN211934425U - Capturing device and filter system - Google Patents

Abstract

The utility model relates to a capture device and filter system, the capture device is including the ware of catching and the control rod that link to each other, the ware of catching is including catching the piece, be provided with the inner chamber that runs through along the axial in the control rod, it is mobilizable to be located to catch in the inner chamber, the one end of catching the piece is followed wear out in the inner chamber, fix the distal end of control rod, the other end of catching the piece passes through the inner chamber is followed the proximal end of control rod is worn out, makes it is in the distal end side of control rod is formed with the adjustable ring of catching of internal diameter size. The utility model discloses capture device and filter system's beneficial effect: by arranging the catching ring with the adjustable inner diameter, after the catching ring is sleeved on the recovering piece of the filter, the catching ring can be integrally contracted, the catching ring is tightly connected with the recovering piece, so that the catching ring and the recovering piece are prevented from being separated in the recovering process, and the success rate of recovering the filter is improved.

Description

Translated fromChinese

抓捕装置及滤器系统Capture device and filter system

技术领域technical field

本实用新型涉及植入医疗器械技术领域，特别是涉及一种抓捕装置及滤器系统。The utility model relates to the technical field of implanted medical instruments, in particular to a catching device and a filter system.

背景技术Background technique

肺栓塞是由于内源性或外源性的栓子堵塞肺动脉主干或分支，引起肺循环障碍的临床和病理生理综合征，这种病症会累及脑、心、肾等重要器官，严重者甚至波及整个循环和呼吸系统而导致生命危险。现有的治疗方法中，有一种是在血管中植入临时的腔静脉滤器(以下简称滤器)，通过滤器拦截较大的血栓，防止其在重要脏器等位置堵塞血管，避免造成患者脏器缺氧损坏。这种滤器的结构简单，依靠自膨胀性在血管壁上固定，待病变缓解或解除后再撤掉该滤器。Pulmonary embolism is a clinical and pathophysiological syndrome of pulmonary circulation disorder caused by endogenous or exogenous emboli blocking the main or branch of the pulmonary artery. Danger to life due to circulatory and respiratory system. Among the existing treatment methods, one is to implant a temporary vena cava filter (hereinafter referred to as the filter) in the blood vessel, and block the large thrombus through the filter to prevent it from blocking the blood vessel in important organs and other positions, and avoid causing the patient's organs. hypoxia damage. The filter has a simple structure, and is fixed on the blood vessel wall by self-expansion, and the filter is removed after the disease is relieved or relieved.

目前临床上均采用抓捕器对滤器进行回收，抓捕器包括抓捕圈套和连接抓捕圈套的操纵杆，回收时，使抓捕圈套与滤器的回收钩连接，然后将滤器收回。但是，该抓捕器在临床使用时，抓捕圈套与滤器的回收钩容易发生松脱，导致滤器回收失败。At present, the trap is used to recover the filter in clinical practice. The trap includes a trap and a joystick connected to the trap. When recovering, the trap is connected to the recovery hook of the filter, and then the filter is retracted. However, when the catcher is used clinically, the catcher snare and the recovery hook of the filter are easily loosened, resulting in failure of the filter recovery.

实用新型内容Utility model content

基于此，有必要提供一种抓捕装置及滤器系统，以解决抓捕装置与滤器在回收过程中容易松脱的问题。Based on this, it is necessary to provide a catching device and a filter system to solve the problem that the catching device and the filter are easily loosened during the recovery process.

本实用新型提供一种抓捕装置，包括相连的抓捕器与操纵杆，所述抓捕器包括抓捕件，所述操纵杆内设置有沿轴向贯穿的内腔，所述抓捕件可活动的位于所述内腔中，所述抓捕件的一端从所述内腔中穿出、并固定在所述操纵杆的远端，所述抓捕件的另一端通过所述内腔从所述操纵杆的近端穿出，使所述抓捕件在所述操纵杆的远端侧形成有内径大小可调节的抓捕环。The utility model provides a catch device, which comprises a connected catcher and a joystick, the catcher comprises a catcher, the joystick is provided with an inner cavity penetrating in the axial direction, and the catcher is provided with a catch. It is movably located in the inner cavity, one end of the catching piece is protruded from the inner cavity and is fixed at the distal end of the joystick, and the other end of the catching piece passes through the inner cavity Passing out from the proximal end of the joystick, the catch is formed with a catch ring with an adjustable inner diameter at the distal end of the joystick.

在本实用新型所述的抓捕装置中，所述抓捕器还包括弹簧管，所述弹簧管套设在所述抓捕环外。In the arresting device of the present invention, the arresting device further comprises a spring tube, and the spring tube is sleeved outside the arresting ring.

在本实用新型所述的抓捕装置中，所述弹簧管的至少一端固定在所述抓捕环上。In the catching device of the present invention, at least one end of the spring tube is fixed on the catching ring.

在本实用新型所述的抓捕装置中，所述操纵杆上设有至少两个沿径向贯穿至所述内腔的切槽，所述切槽将所述操纵杆分隔出至少两个沿周向间隔设置的瓣；所述抓捕装置还包括锁紧件，所述锁紧件套在所述瓣外、并可径向挤压所述瓣，使所述抓捕件与所述内腔固定连接。In the catching device of the present invention, the lever is provided with at least two slits penetrating into the inner cavity in the radial direction, and the slits separate the lever into at least two edges. Circumferentially spaced petals; the catching device further includes a locking member, which is sleeved outside the petal and can radially press the petal, so that the grasping member and the inner Cavity fixed connection.

在本实用新型所述的抓捕装置中，所述锁紧件为中空结构，所述锁紧件内设有斜面内螺纹，所述瓣的外表面设有与所述斜面内螺纹配合的斜面螺纹。In the catching device of the present invention, the locking member is a hollow structure, the locking member is provided with an inclined surface internal thread, and the outer surface of the petal is provided with an inclined surface matching with the inclined surface internal thread thread.

在本实用新型所述的抓捕装置中，所述瓣位于所述操纵杆的近端。In the capture device of the present invention, the flap is located at the proximal end of the joystick.

在本实用新型所述的抓捕装置中，多个所述瓣沿圆周方向均匀设置。In the catching device of the present invention, a plurality of the petals are evenly arranged along the circumferential direction.

在本实用新型所述的抓捕装置中，所述抓捕环为开口环。In the catching device of the present invention, the catching ring is a split ring.

本实用新型还提供一种滤器系统，包括如上述所述的抓捕装置。The present invention also provides a filter system, which includes the above-mentioned catching device.

本实用新型提供了一种抓捕装置及滤器系统，通过设置内径大小可调节的抓捕环，当抓捕环套在滤器的回收件上后，可使抓捕环整体收缩，将抓捕环与回收件紧紧连接在一起，从而避免抓捕环与回收件在回收过程中脱离，提高滤器回收的成功率。The utility model provides a catching device and a filter system. By arranging a catching ring with an adjustable inner diameter, when the catching ring is sleeved on a recovery part of a filter, the catching ring can be contracted as a whole, and the catching ring can be shrunk as a whole. It is tightly connected with the recycling part, so as to avoid the detachment of the catch ring and the recycling part during the recycling process, and improve the success rate of filter recycling.

附图说明Description of drawings

图1为一实施例的滤器系统的结构示意图；1 is a schematic structural diagram of a filter system according to an embodiment;

图2为一实施例的滤器系统的滤器结构示意图；Fig. 2 is the filter structure schematic diagram of the filter system of an embodiment;

图3为图2示出的滤器的主体结构示意图；Fig. 3 is the main structure schematic diagram of the filter shown in Fig. 2;

图4(a)为一实施例的滤器系统中，抓捕装置的抓捕器的结构示意图；4(a) is a schematic structural diagram of a catcher of a catcher in a filter system according to an embodiment;

图4(b)为图4(a)示出的抓捕器中，弹簧管的结构示意图；Fig. 4(b) is a schematic structural diagram of a spring tube in the catcher shown in Fig. 4(a);

图4(c)为图4(b)示出的弹簧管的剖面结构示意图；Figure 4 (c) is a schematic cross-sectional structure diagram of the spring tube shown in Figure 4 (b);

图4(d)为图4(a)示出的抓捕器中，抓捕件的结构示意图；Fig. 4(d) is a schematic structural diagram of a catch member in the catcher shown in Fig. 4(a);

图5为一实施例中的滤器系统中，操纵杆的结构示意图，图中示出了操纵杆在A-A处和B-B处的截面结构示意图；5 is a schematic structural diagram of a joystick in a filter system in an embodiment, and the figure shows a cross-sectional structural schematic view of the joystick at A-A and B-B;

图6为一实施例中的滤器系统中，抓捕装置的锁紧件的剖面结构示意图；6 is a schematic cross-sectional structural diagram of a locking member of a catching device in a filter system according to an embodiment;

图7为一实施例中的滤器系统中，抓捕装置的装配结构示意图。FIG. 7 is a schematic diagram of the assembly structure of the catching device in the filter system according to an embodiment.

具体实施方式Detailed ways

为了便于理解本实用新型，下面将参照相关附图对本实用新型进行更全面的描述。附图中给出了本实用新型的较佳实施方式。但是，本实用新型可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本实用新型的公开内容理解的更加透彻全面。In order to facilitate the understanding of the present utility model, the present utility model will be more fully described below with reference to the related drawings. The preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or an intervening element may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for the purpose of illustration only and do not represent the only embodiment.

除非另有定义，本文所使用的所有的技术和科学术语与属于本实用新型的技术领域的技术人员通常理解的含义相同。本文中在本实用新型的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本实用新型。本文所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

在介入医疗器械领域，一般将植入人体或动物体内的医疗器械的距离操作者较近的一端称为“近端”，将距离操作者较远的一端称为“远端”，并依据此原理定义医疗器械的任一部件的“近端”和“远端”。“轴向”一般是指医疗器械在被输送时的长度方向，“径向”一般是指医疗器械的与其“轴向”垂直的方向，并依据此原理定义医疗器械的任一部件的“轴向”和“径向”。In the field of interventional medical devices, the end of the medical device implanted in the human body or animal body that is closer to the operator is generally called the "proximal end", and the end farther away from the operator is called the "distal end". Principles define the "proximal end" and the "distal end" of any component of a medical device. "Axial" generally refers to the length direction of the medical device when it is delivered, and "radial" generally refers to the direction perpendicular to the "axial" of the medical device. According to this principle, the "axial" of any part of the medical device is defined Towards" and "Radial".

参阅图1所示，一实施例中的一种滤器系统100，包括滤器10和抓捕装置20。Referring to FIG. 1 , afilter system 100 in one embodiment includes afilter 10 and acatching device 20 .

滤器10用于植入到血管中，通过拦截较大的血栓，以起到过滤血液效果，防止血栓在重要脏器等位置堵塞血管而造成脏器缺氧损坏。Thefilter 10 is used to be implanted into a blood vessel, and by intercepting large thrombi, it can filter blood, and prevent the thrombus from blocking the blood vessel in important organs and other positions and causing damage to the organs due to hypoxia.

结合图2所示，滤器10包括主体结构12以及连接于主体结构12端部的回收件11。As shown in FIG. 2 , thefilter 10 includes amain structure 12 and arecovery member 11 connected to the end of themain structure 12 .

在一些实施例中，主体结构12由自膨胀性优越的管材如镍钛管切割定型而成，例如，结合图3所示，主体结构12采用镍钛管切割、定型而成，其包括第一连接件121、第二连接件123以及连接于第一连接件121和第二连接件123之间的若干个支撑杆122。支撑杆122的数量可以是3个或3个以上，在此不作限定。支撑杆122包括第一滤网、第二滤网以及连接于第一滤网与第二滤网之间的支撑部，第一滤网与第一连接件121固定连接，第二滤网与第二连接件固定连接，滤器10释放后，支撑部抵接至血管内壁，将滤器10固定在血管内。In some embodiments, themain body structure 12 is cut and shaped from a pipe material with excellent self-expansion, such as a nickel-titanium tube. For example, as shown in FIG. The connectingpiece 121 , the second connectingpiece 123 , andseveral support rods 122 connected between the first connectingpiece 121 and the second connectingpiece 123 . The number of thesupport rods 122 may be three or more, which is not limited herein. Thesupport rod 122 includes a first filter screen, a second filter screen, and a support portion connected between the first filter screen and the second filter screen. The first filter screen is fixedly connected to thefirst connector 121, and the second filter screen is connected to the The two connectors are fixedly connected, and after thefilter 10 is released, the support part abuts against the inner wall of the blood vessel, and thefilter 10 is fixed in the blood vessel.

用于形成主体结构12的管材的外径尺寸可以为0.2mm-4mm，对于形成主体结构12的管材的尺寸，在此不作限定。The outer diameter of the pipe for forming themain structure 12 may be 0.2 mm-4 mm, and the size of the pipe for forming themain structure 12 is not limited herein.

回收件11可以是通过焊接、螺纹连接等连接方式与主体结构12的第一连接件121或第二连接件123相连，并用于供抓捕装置20抓捕，以便抓捕装置20能够牵引滤器10移动。Therecovery member 11 may be connected to the first connectingmember 121 or the second connectingmember 123 of themain structure 12 by welding, screw connection, etc., and is used for thecapture device 20 to capture, so that thecapture device 20 can pull thefilter 10 move.

在本实施例中，滤器10为两端封闭的框架式滤器，本领域的普通技术人员应当知晓，本实施例的封闭框架式滤器仅用作举例，在其他实施例中，滤器10还可以为单伞开放式滤器。其中，单伞开放式滤器包括多根支撑杆，多根支撑杆的一端为开放端，另一端汇聚在一起与回收件连接。In this embodiment, thefilter 10 is a frame-type filter with both ends closed. Those skilled in the art should know that the closed-frame filter in this embodiment is only used as an example. In other embodiments, thefilter 10 may also be a Single umbrella open filter. Wherein, the single-umbrella open filter includes a plurality of support rods, one end of the plurality of support rods is an open end, and the other ends are gathered together and connected to the recovery piece.

再次参阅图1所示，抓捕装置20包括抓捕器21、操纵杆22以及锁紧件23。Referring again to FIG. 1 , the catchingdevice 20 includes a catchingdevice 21 , alever 22 and a lockingmember 23 .

结合图4(a)和4(d)所示，抓捕器21用于抓捕滤器10的回收件11，抓捕器21包括弹簧管211和抓捕件212，抓捕件212的远端设置有内径大小可调节的抓捕环2123，该抓捕环2123为开口环，弹簧管211套设在该抓捕环2123外。抓捕件212可以由镍钛或不锈钢材质的单丝、镍钛或不锈钢材质的多股丝、镍钛或不锈钢材质的扁带定型而成。4(a) and 4(d), thecatcher 21 is used to catch therecovery member 11 of thefilter 10. Thecatcher 21 includes aspring tube 211 and acatcher 212. The distal end of the catcher 212 A catchingring 2123 with an adjustable inner diameter is provided, the catchingring 2123 is an open ring, and thespring tube 211 is sleeved outside the catchingring 2123 . Thecatch 212 can be shaped by a single wire made of nickel titanium or stainless steel, a multi-strand wire made of nickel titanium or stainless steel, or a flat belt made of nickel titanium or stainless steel.

在一些实施例中，抓捕环2123被预定型成类圆环状，当抓捕器21从鞘管中释放后，抓捕环2123自动回复至类圆环状。弹簧管211套在抓捕件212的抓捕环2123外，由于弹簧管211具有弹性变形能力，当抓捕环2123所包围的内径缩小时，弹簧管211可跟随抓捕环2123一起变形。In some embodiments, thecatch ring 2123 is pre-shaped into a torus-like shape that automatically returns to the torus-like shape when thecatch 21 is released from the sheath. Thespring tube 211 is sheathed outside the catchingring 2123 of the catchingmember 212 . Since thespring tube 211 has elastic deformation ability, when the inner diameter surrounded by the catchingring 2123 is reduced, thespring tube 211 can deform together with the catchingring 2123 .

在一些实施例中，结合图2所示，回收件11呈勾状，其具有朝向远端的开口，从而利用抓捕装置20对其进行抓捕。当抓捕环2123套在回收件11上后，使抓捕环2123整体收缩，即，减小抓捕环2123所包围的环内径，将抓捕环2123与回收件11紧紧连接在一起，从而避免抓捕环2123与回收件11脱离，提高滤器10回收的成功率。In some embodiments, as shown in FIG. 2 , therecovery member 11 is in the shape of a hook, which has an opening toward the distal end, so as to be captured by the capturingdevice 20 . After thecatch ring 2123 is put on therecovery piece 11, thecatch ring 2123 is contracted as a whole, that is, the inner diameter of the ring surrounded by thecatch ring 2123 is reduced, and thecatch ring 2123 and therecovery piece 11 are tightly connected together, Thus, the catchingring 2123 is prevented from being separated from therecovery member 11, and the success rate of the recovery of thefilter 10 is improved.

结合图4(b)所示，弹簧管211具有相对的第一端2111和第二端2112，第一端2111和第二端2112中的至少一个固定在抓捕环2123上，从而在牵引抓捕件212时，抓捕环2123所包围的内径收缩的过程中，弹簧管211能更好的随抓捕环2123一起收缩。With reference to FIG. 4(b), thespring tube 211 has opposite first ends 2111 and second ends 2112, and at least one of the first ends 2111 and the second ends 2112 is fixed on thecatch ring 2123, so that the catch is pulled When the catchingmember 212 is being installed, thespring tube 211 can better shrink together with the catchingring 2123 in the process of shrinking the inner diameter surrounded by the catchingring 2123 .

图4(c)为弹簧管211的剖面结构示意图，弹簧管211采用具有较好的形状记忆性能的材质制成，如镍钛合金等。在一些实施例中，弹簧管211被预定型成类圆环状，由于弹簧管211具有较好的形状记忆性能，当抓捕器21从鞘管中释放后，弹簧管211自动回复至类圆环状，并使包覆在其内的抓捕环2123呈类圆环状，弹簧管211可避免抓捕环2123在血流冲击下变形，使抓捕环2123维持较大内径，便于套接至滤器10上进行抓捕。FIG. 4( c ) is a schematic cross-sectional structure diagram of thespring tube 211 . Thespring tube 211 is made of a material with good shape memory properties, such as nickel-titanium alloy. In some embodiments, thespring tube 211 is pre-shaped into a circular shape. Since thespring tube 211 has good shape memory performance, when thecatcher 21 is released from the sheath, thespring tube 211 automatically returns to the circular shape Thespring tube 211 can prevent the arrestingring 2123 from being deformed under the impact of blood flow, so that the arrestingring 2123 maintains a large inner diameter, which is convenient for socket connection to filter 10 for capture.

需要说明的是，弹簧管211套在抓捕件212的抓捕环2123外时，可增加抓捕环2123的整体尺寸，这样便可以增加抓捕环2123在x光下的可探测性，回收时可准确地将抓捕环2123套住回收件11。It should be noted that when thespring tube 211 is sheathed outside the catchingring 2123 of the catchingmember 212, the overall size of the catchingring 2123 can be increased, so that the detectability of the catchingring 2123 under x-rays can be increased, and the recovery At the same time, thecatch ring 2123 can be accurately sheathed on therecovery piece 11.

结合图5所示，操纵杆22具有相对的远端221和近端222，且内开设有第一内腔223和第二内腔224。第一内腔223贯穿至操纵杆22的远端221和近端222，第二内腔224至少贯穿操纵杆22的远端221。结合图4(d)、图5和图7所示，抓捕件212具有相对的远端端口2121和近端端口2122，操纵杆22和抓捕器21配合后，第二内腔224固定抓捕件212的远端端口2121，抓捕件212可轴向移动地穿设于第一内腔223，抓捕件212近端端口2122从操纵杆22的近端222穿出，使抓捕件212在操纵杆22的远端侧形成所述抓捕环2123。As shown in FIG. 5 , thejoystick 22 has opposite distal ends 221 and proximal ends 222 , and is provided with afirst lumen 223 and asecond lumen 224 therein. Thefirst lumen 223 penetrates to thedistal end 221 and theproximal end 222 of thejoystick 22 , and thesecond lumen 224 penetrates at least thedistal end 221 of thejoystick 22 . 4( d ), FIG. 5 and FIG. 7 , thecatch member 212 has oppositedistal ports 2121 andproximal ports 2122 . After thejoystick 22 is matched with thecatcher 21 , thesecond lumen 224 fixes the catch Thedistal port 2121 of the catchingmember 212, the catchingmember 212 is axially movably penetrated through thefirst lumen 223, and theproximal port 2122 of the catchingmember 212 passes through theproximal end 222 of thejoystick 22, so that the catchingmember 212 passes through theproximal end 222 of thejoystick 22. 212 forms thecatch ring 2123 on the distal end side of thelever 22 .

继续参阅图5所示，操纵杆22的近端222设有斜面螺纹225，同时，操纵杆22的近端222开设有径向贯穿至第一内腔223的多个切槽226，多个切槽226在操纵杆22的近端分隔出多个周向彼此间隔的瓣227。由于抓捕件212穿设于第一内腔223，从而抓捕件212穿过第一内腔223后，瓣227围设于抓捕件212的周侧，这样瓣227受径向挤压时能够夹持固定抓捕件212，使得抓捕件212轴向限位于操纵杆22。Continuing to refer to FIG. 5 , theproximal end 222 of thejoystick 22 is provided with abevel thread 225 . At the same time, theproximal end 222 of thejoystick 22 is provided with a plurality of cuttinggrooves 226 penetrating radially to the firstinner cavity 223 . Theslot 226 separates a plurality of circumferentially spacedpetals 227 at the proximal end of thelever 22 . Since the catchingmember 212 passes through thefirst lumen 223, after the catchingmember 212 passes through thefirst lumen 223, thepetals 227 are surrounded on the peripheral side of the catchingmember 212, so that when thepetals 227 are compressed radially The fixedcatch 212 can be clamped so that thecatch 212 is axially limited to thejoystick 22 .

需要说明的是，切槽226的数量可以是2个或2个以上。It should be noted that the number of thecut grooves 226 may be two or more.

如图5所示，4个切槽226在操纵杆22的近端222分隔出4个瓣227。在其他实施例中，操纵杆22的近端222被分隔出至少2个瓣227。As shown in FIG. 5 , fourslits 226 separate fourpetals 227 at theproximal end 222 of thejoystick 22 . In other embodiments, theproximal end 222 of thejoystick 22 is separated by at least 2petals 227 .

结合图6所示，锁紧件23设有斜面内螺纹23a和通孔23b，斜面内螺纹23a能够与操纵杆22上的斜面螺纹225配合。在锁紧件23与操纵杆22的近端222螺纹配合后，穿设于操纵杆22的抓捕件212能够从通孔23b穿出。With reference to FIG. 6 , the lockingmember 23 is provided with a beveledinner thread 23 a and a throughhole 23 b , and the beveledinner thread 23 a can be matched with thebeveled thread 225 on the operatingrod 22 . After the lockingmember 23 is threadedly engaged with theproximal end 222 of thejoystick 22 , thecatch member 212 pierced through thejoystick 22 can pass through the throughhole 23b.

当锁紧件23通过斜面内螺纹23a配合于操纵杆22的斜面螺纹225时，随着旋拧锁紧件23，锁紧件23将径向挤压斜面螺纹225处的瓣227，由于瓣227之间通过切槽226隔开，从而瓣227受到锁紧件23的径向挤压时能够径向收紧，进而将第一内腔223内的抓捕件212夹紧，将抓捕件212的抓捕环2123维持在固定的内径，从而保持对滤器10的抓捕，避免滤器10与抓捕环2123松脱。相应地，需要解除对滤器10的抓捕时，解除锁紧件23对瓣227的径向挤压，便可以适应抓捕件212在操纵杆22内轴向移动，使抓捕环2123所包围的内径增大或减小。When the lockingmember 23 is matched with thebevel thread 225 of thejoystick 22 through the bevelinternal thread 23a, as the lockingmember 23 is screwed, the lockingmember 23 will radially squeeze theflap 227 at thebevel thread 225, because theflap 227 They are separated by aslot 226, so that theflap 227 can be radially tightened when it is radially squeezed by the lockingmember 23, so as to clamp the catchingmember 212 in the firstinner cavity 223, and the catchingmember 212 The catchingring 2123 is maintained at a fixed inner diameter, so as to maintain the catching of thefilter 10 and prevent thefilter 10 and the catchingring 2123 from loosening. Correspondingly, when it is necessary to release the capture of thefilter 10, the radial pressing of theflap 227 by the lockingmember 23 is released, so as to adapt to the axial movement of thecapture member 212 in the operatingrod 22, so that thecapture ring 2123 is surrounded by The inner diameter increases or decreases.

如图7所示，抓捕装置20的抓捕器21的抓捕环2123，常态处于一个尺寸较大的环线。当抓捕环2123挂上回收件11时，旋松锁紧件23，解除抓捕件212与操纵杆22之间的紧固连接，然后朝近端回拉抓捕件212，使抓捕环2123包围的内径减小，当抓捕环2123的内径无法继续减小时，抓捕环2123与回收件11抓牢，此时旋紧锁紧件23，通过锁紧件23与操纵杆22配合将第一内腔223内的抓捕件212夹紧，避免抓捕过程中滤器10与抓捕环2123脱离，从而达到更好的回收。As shown in FIG. 7 , the catchingring 2123 of the catchingdevice 21 of the catchingdevice 20 is normally in a ring line with a larger size. When thecatch ring 2123 is hung on therecovery piece 11, the lockingpiece 23 is loosened to release the fastened connection between thecatch piece 212 and thejoystick 22, and then thecatch piece 212 is pulled back towards the proximal end to make the catch loop The inner diameter enclosed by 2123 decreases. When the inner diameter of the catchingring 2123 cannot continue to decrease, the catchingring 2123 and therecovery piece 11 are firmly grasped. The catchingmember 212 in the firstinner cavity 223 is clamped to prevent thefilter 10 from being separated from the catchingring 2123 during the catching process, thereby achieving better recovery.

本领域的普通技术人员应当知晓，本实施例的抓捕装置20仅用作举例，并不对本申请进行限制，本申请的抓捕装置20还可以为其它结构，只要抓捕装置20的抓捕环2123的内径大小可调节即可。例如，在其他实施例中，抓捕装置20包括抓捕器21与操纵杆22，抓捕器21的一端固定在操纵杆22的远端，另一端可活动的从操纵杆22的第一内腔223中穿过，使得抓捕环2123的内径大小可调节。在该实施例中，抓捕装置20不包括锁紧件23，操纵杆22的近端无需设置与锁紧件23配合的斜面螺纹225及切槽226等结构。Those skilled in the art should know that the arrestingdevice 20 in this embodiment is only used as an example, and does not limit the application. The arrestingdevice 20 in this application may also have other structures, as long as the arresting The inner diameter of thering 2123 can be adjusted. For example, in other embodiments, thecatch device 20 includes acatcher 21 and ajoystick 22 , one end of thecatcher 21 is fixed at the distal end of thejoystick 22 , and the other end is movable from the first inner portion of thejoystick 22 . Through thecavity 223, the inner diameter of the catchingring 2123 can be adjusted. In this embodiment, the catchingdevice 20 does not include the lockingmember 23 , and the proximal end of thejoystick 22 does not need to be provided with structures such as thebeveled thread 225 and theslot 226 matched with the lockingmember 23 .

以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

以上所述实施例仅表达了本实用新型的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对实用新型专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干变形和改进，这些都属于本实用新型的保护范围。因此，本实用新型专利的保护范围应以所附权利要求为准。The above-mentioned embodiments only represent several embodiments of the present utility model, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the utility model patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for this utility model shall be subject to the appended claims.

Claims (9)

Translated fromChinese

1.一种抓捕装置，包括相连的抓捕器与操纵杆，其特征在于，所述抓捕器包括抓捕件，所述操纵杆内设置有沿轴向贯穿的内腔，所述抓捕件可活动的位于所述内腔中，所述抓捕件的一端从所述内腔中穿出、并固定在所述操纵杆的远端，所述抓捕件的另一端通过所述内腔从所述操纵杆的近端穿出，使所述抓捕件在所述操纵杆的远端侧形成有内径大小可调节的抓捕环。1. A catch device, comprising a connected catcher and a joystick, wherein the catcher comprises a catcher, the joystick is provided with an axially penetrating cavity, and the catcher The catch is movably located in the inner cavity, one end of the catch passes through the inner cavity and is fixed at the distal end of the joystick, and the other end of the catch passes through the The inner cavity protrudes from the proximal end of the joystick, so that the catch member forms a catch ring with an adjustable inner diameter at the distal end of the joystick.2.根据权利要求1所述的抓捕装置，其特征在于，所述抓捕器还包括弹簧管，所述弹簧管套设在所述抓捕环外。2 . The arresting device according to claim 1 , wherein the arresting device further comprises a spring tube, and the spring tube is sleeved outside the capturing ring. 3 .3.根据权利要求2所述的抓捕装置，其特征在于，所述弹簧管的至少一端固定在所述抓捕环上。3 . The catching device according to claim 2 , wherein at least one end of the spring tube is fixed on the catching ring. 4 .4.根据权利要求1所述的抓捕装置，其特征在于，所述操纵杆上设有至少两个沿径向贯穿至所述内腔的切槽，所述切槽将所述操纵杆分隔出至少两个沿周向间隔设置的瓣；所述抓捕装置还包括锁紧件，所述锁紧件套在所述瓣外、并可径向挤压所述瓣，使所述抓捕件与所述内腔固定连接。4 . The catching device according to claim 1 , wherein at least two cutting grooves penetrating through the inner cavity in the radial direction are provided on the operating rod, and the cutting grooves separate the operating rod. 5 . at least two petals arranged at intervals along the circumferential direction; the catching device further includes a locking member, the locking member is sleeved on the outside of the petals and can radially press the petals to make the catching The component is fixedly connected with the inner cavity.5.根据权利要求4所述的抓捕装置，其特征在于，所述锁紧件为中空结构，所述锁紧件内设有斜面内螺纹，所述瓣的外表面设有与所述斜面内螺纹配合的斜面螺纹。5 . The catching device according to claim 4 , wherein the locking member is a hollow structure, the locking member is provided with a beveled internal thread, and the outer surface of the petal is provided with the beveled surface. 6 . Beveled thread for female thread fit.6.根据权利要求4所述的抓捕装置，其特征在于，所述瓣位于所述操纵杆的近端。6. The capture device of claim 4, wherein the flap is located at the proximal end of the lever.7.根据权利要求4所述的抓捕装置，其特征在于，多个所述瓣沿圆周方向均匀设置。7 . The catching device according to claim 4 , wherein a plurality of the petals are uniformly arranged along the circumferential direction. 8 .8.根据权利要求1所述的抓捕装置，其特征在于，所述抓捕环为开口环。8. The arresting device according to claim 1, wherein the arresting ring is a split ring.9.一种滤器系统，其特征在于，包括如权利要求1～8任一所述的抓捕装置。9 . A filter system, characterized in that it comprises the catching device according to any one of claims 1 to 8 . 10 .

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