CN111419338A

Movatterモバイル変換

Info

Publication number: CN111419338A
Application number: CN202010291121.1A
Authority: CN
Inventors: 朱宽; 王震; 王国辉; 张坤; 张晨朝; 刘锦
Original assignee: Weiming Medical Equipment Shanghai Co ltd
Current assignee: Weiming Medical Equipment Shanghai Co ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-07-17

Abstract

Translated fromChinese

本发明公开了一种用于颅内取栓的球囊抽吸导管装置，涉及医疗器械领域，包括外套管、抽吸导管、球囊、第一显影环、第二显影环、应力扩散管、Y型手柄，所述外套管和所述抽吸导管同轴设置，所述抽吸导管近端部分设置于所述外套管内腔，设置于所述外套管内腔的所述抽吸导管与所述外套管构成双腔结构；所述球囊固定设置在所述外套管远端，所述第一显影环固定设置在所述外套管远端且靠近所述球囊，所述第二显影环固定设置在所述抽吸导管远端，所述外套管近端连接所述应力扩散管远端。通过本发明的实施，不仅可以降低栓子逃逸概率，减少费用开支，节省手术时间，还具有结构简单功能多样的特点。

The invention discloses a balloon suction catheter device used for intracranial thrombectomy, which relates to the field of medical devices and includes an outer sleeve, a suction catheter, a balloon, a first developing ring, a second developing ring, a stress diffusion tube, Y-shaped handle, the outer sleeve and the suction catheter are arranged coaxially, the proximal part of the suction catheter is arranged in the inner cavity of the outer sleeve, and the suction catheter arranged in the inner cavity of the outer sleeve and the The outer sleeve forms a double-chamber structure; the balloon is fixedly arranged at the distal end of the outer sleeve, the first developing ring is fixedly arranged at the distal end of the outer sleeve and is close to the balloon, and the second developing ring is fixed It is arranged at the distal end of the suction catheter, and the proximal end of the outer sleeve is connected to the distal end of the stress diffusion tube. Through the implementation of the present invention, not only the escape probability of the emboli can be reduced, the costs and expenses can be reduced, and the operation time can be saved, but also it has the characteristics of simple structure and various functions.

Description

Translated fromChinese

一种用于颅内取栓的球囊抽吸导管装置A balloon suction catheter device for intracranial thrombectomy

技术领域technical field

本发明涉及医疗器械领域，尤其涉及一种用于颅内取栓的球囊抽吸导管装置。The invention relates to the field of medical instruments, in particular to a balloon suction catheter device used for intracranial thrombectomy.

背景技术Background technique

脑卒中为世界上的常见病之一，其特点为：高发病率、高患病率、高致残率。我国城市脑血管病的年发病率为219/10万，农村的为185/10万，而且还在逐年上升。自1998年至2008年脑血管病的患病率由5.9‰上升至9.7‰。存活的脑血管病患者中，约有四分之三不同程度的丧失劳动能力。有报道称80％的脑卒中患者有不同程度的肢体功能障碍，其中43.7％的患者生活不能自理。Stroke is one of the common diseases in the world, which is characterized by high incidence, high prevalence and high disability rate. The annual incidence of cerebrovascular disease in my country is 219/100,000 in urban areas and 185/100,000 in rural areas, and it is still increasing year by year. From 1998 to 2008, the prevalence of cerebrovascular disease increased from 5.9‰ to 9.7‰. About three-quarters of the surviving cerebrovascular disease patients are incapacitated to varying degrees. It has been reported that 80% of stroke patients have different degrees of limb dysfunction, of which 43.7% cannot take care of themselves.

静脉注射rt-PA溶栓是目前唯一被循证医学证实有效的脑梗死急性期治疗方法。但是静脉注射溶栓的治疗时间长，对缺血的脑组织损伤大，并伴有出血风险，再通率非常低。基底动脉溶栓的再通率只有30％左右，颈动脉末端的病变溶栓的再通率只有6％，颈总动脉溶栓的再通率只有27％左右。而且静脉注射溶栓的时间窗只有4小时左右。由以上可见，脑动脉闭塞单用静脉溶栓是远远不够的，单纯的静脉溶栓可能不足以满足实际的临床需求。Intravenous rt-PA thrombolysis is currently the only effective treatment method for acute cerebral infarction that has been proven by evidence-based medicine. However, the treatment time of intravenous thrombolysis is long, the damage to ischemic brain tissue is large, and it is accompanied by the risk of bleeding, and the recanalization rate is very low. The recanalization rate of thrombolysis in the basilar artery is only about 30%, the recanalization rate of thrombolysis in the distal carotid artery is only 6%, and the recanalization rate of thrombolysis in the common carotid artery is only about 27%. And the time window for intravenous thrombolysis is only about 4 hours. It can be seen from the above that intravenous thrombolysis alone is far from enough for cerebral artery occlusion, and intravenous thrombolysis alone may not be enough to meet the actual clinical needs.

另一类常用的治疗方式就是机器取栓。机械取栓是将取栓器输送至病变位置，然后通过鞘管将血栓取出至体外，包括以下几种方法：血栓切除术，这种方法取栓彻底，但对血管壁损伤过大，极易引起各种并发症；激光取栓，这种方法操作难度大，激光能量过低则无效，能量过高则损伤血管，而且，同样引起各种炎症；捕栓网取栓，虽然操作简单，但因捕栓网体积较大而无法在颅内狭窄血管使用，且耗时相对较长。Another common treatment modality is machine thrombectomy. Mechanical thrombectomy is to transport the thrombectomy device to the lesion site, and then take the thrombus out of the body through the sheath, including the following methods: thrombectomy. Cause various complications; laser thrombectomy, this method is difficult to operate, the laser energy is too low, it is ineffective, and the energy is too high to damage the blood vessels, and it also causes various inflammations; thrombectomy net, although the operation is simple, but Due to the large size of the thrombus-catching net, it cannot be used in intracranial stenotic vessels, and it takes a relatively long time.

抽吸取栓是目前一种较新的取栓手段，可以减少从股动脉穿刺到再灌注的时间。但在操作取栓过程中，在未完全抽吸血栓或在抽吸导管内仍有较小的碎栓的可能，在停止抽吸后，仍有栓子随血流逃逸的可能。如过长时间的抽吸，会导致流血过多。为了减少取栓过程中栓子逃逸的机率，封堵球囊导管为取栓时近端血管封堵提供了途径，但封堵球囊导管与机械取栓或抽吸导管结合，增加手术过程中的难度和操作时间。Aspirating thrombectomy is a relatively new method of thrombectomy, which can reduce the time from femoral artery puncture to reperfusion. However, in the process of thrombectomy, if the thrombus is not completely suctioned or there is still a small possibility of broken thrombus in the suction catheter, after the suction is stopped, the thrombus may still escape with the blood flow. Excessive bleeding may result if suction is continued for too long. In order to reduce the chance of emboli escaping during thrombectomy, the occlusion balloon catheter provides a way for proximal vascular occlusion during thrombectomy. difficulty and operation time.

综上所述，目前还未有一种既可以用于颅内血栓抽吸，又可以用于机械取栓，同时可封堵或半封堵近端颈动脉的装置。To sum up, there is currently no device that can be used for both intracranial thrombus aspiration and mechanical thrombectomy, and at the same time to block or semi-occlude the proximal carotid artery.

因此，本领域的技术人员致力于开发一种用于颅内取栓的球囊抽吸导管装置，可以减少栓子逃逸几率，并且结构简单功能多样，减少费用开支，节省手术时间。Therefore, those skilled in the art are devoted to developing a balloon suction catheter device for intracranial thrombectomy, which can reduce the probability of emboli escape, and has a simple structure and various functions, thereby reducing costs and operating time.

发明内容SUMMARY OF THE INVENTION

有鉴于现有技术的上述缺陷，本发明所要解决的技术问题是单独使用抽吸导管栓子逃逸率较高，且抽吸导管功能单一，而与多种导管配合取栓则费用高、操作复杂费时。In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the escape rate of the emboli is high when the suction catheter is used alone, and the suction catheter has a single function, while the cost of cooperating with a variety of catheters to remove the emboli is high and the operation is complicated. Time consuming.

为实现上述目的，本发明提供了一种用于颅内取栓的球囊抽吸导管装置，包括外套管、抽吸导管、球囊、第一显影环、第二显影环、应力扩散管，其中，所述抽吸导管为管状构件，所述外套管和所述抽吸导管同轴设置，所述抽吸导管近端部分设置于所述外套管内腔，设置于所述外套管内腔的所述抽吸导管为第一抽吸导管，设置于所述外套管内腔以外的所述抽吸导管为第二抽吸导管，所述第一抽吸导管与所述外套管构成双腔结构；所述球囊固定设置在所述外套管远端，所述第一显影环固定设置在所述外套管远端且靠近所述球囊，所述第二显影环固定设置在所述抽吸导管远端，所述外套管近端连接所述应力扩散管远端。In order to achieve the above purpose, the present invention provides a balloon suction catheter device for intracranial thrombectomy, comprising an outer sleeve, a suction catheter, a balloon, a first developing ring, a second developing ring, and a stress diffusion tube, Wherein, the suction catheter is a tubular member, the outer sleeve and the suction catheter are arranged coaxially, the proximal part of the suction catheter is arranged in the inner cavity of the outer sleeve, and is arranged in all parts of the inner cavity of the outer sleeve. The suction conduit is a first suction conduit, the suction conduit disposed outside the inner cavity of the outer casing is a second suction conduit, and the first suction conduit and the outer casing form a double-lumen structure; The balloon is fixedly arranged at the distal end of the outer sleeve, the first development ring is fixedly arranged at the distal end of the outer sleeve and is close to the balloon, and the second development ring is fixedly arranged at the far end of the suction catheter. The proximal end of the outer sleeve is connected to the distal end of the stress diffusion tube.

进一步地，还包括Y型手柄，所述Y型手柄包括手柄第一端、手柄第二端、手柄第三端，所述手柄第一端、所述手柄第二端和所述手柄第三端内腔连通，所述手柄第一端和所述手柄第二端同轴设置，所述手柄第三端的中心轴线与所述手柄第一端的中心轴线的夹角为钝角，所述手柄第一端与所述应力扩散管近端连接。Further, it also includes a Y-shaped handle, the Y-shaped handle includes the first end of the handle, the second end of the handle, the third end of the handle, the first end of the handle, the second end of the handle and the third end of the handle The inner cavity is communicated, the first end of the handle and the second end of the handle are coaxially arranged, the included angle between the central axis of the third end of the handle and the central axis of the first end of the handle is an obtuse angle, and the first end of the handle is an obtuse angle. The end is connected to the proximal end of the stress diffusion tube.

进一步地，还包括Y阀，所述Y阀包括Y阀第一端、Y阀第二端、Y阀第三端，所述Y阀第一端、所述Y阀第二端和所述Y阀第三端内腔连通，所述Y阀第一端和所述Y阀第二端同轴设置，所述Y阀第三端的中心轴线与所述Y阀第一端的中心轴线的夹角为钝角，所述Y阀第一端与所述手柄第二端连接。Further, it also includes a Y valve, the Y valve includes the first end of the Y valve, the second end of the Y valve, the third end of the Y valve, the first end of the Y valve, the second end of the Y valve and the Y valve The inner cavity of the third end of the valve is communicated with the inner cavity, the first end of the Y valve and the second end of the Y valve are coaxially arranged, and the angle between the central axis of the third end of the Y valve and the central axis of the first end of the Y valve For an obtuse angle, the first end of the Y valve is connected with the second end of the handle.

进一步地，还包括无针接头，所述无针接头设置在所述手柄第三端。Further, a needle-free connector is also included, and the needle-free connector is provided at the third end of the handle.

进一步地，所述第二抽吸导管外表面设置有亲水涂层，所述亲水涂层覆盖所述第二抽吸导管远端，所述亲水涂层的长度小于等于所述第二抽吸导管长度。Further, the outer surface of the second suction catheter is provided with a hydrophilic coating, the hydrophilic coating covers the distal end of the second suction catheter, and the length of the hydrophilic coating is less than or equal to the second suction catheter. Suction catheter length.

进一步地，所述应力扩散管远端设置有螺旋状的环切结构，所述环切结构的螺距由远端往近端逐步增大。Further, the distal end of the stress diffusion tube is provided with a helical circumscribed structure, and the pitch of the circumscribed structure gradually increases from the distal end to the proximal end.

进一步地，所述应力扩散管的材质为不锈钢。Further, the material of the stress diffusion tube is stainless steel.

进一步地，所述外套管和所述第二抽吸导管的长度之和小于等于150cm且大于等于90cm，所述第二抽吸导管的长度小于等于40cm且大于等于10cm，所述应力扩散管的长度小于等于6cm且大于等于2cm。Further, the sum of the lengths of the outer sleeve and the second suction conduit is less than or equal to 150 cm and greater than or equal to 90 cm, the length of the second suction conduit is less than or equal to 40 cm and greater than or equal to 10 cm, and the stress diffusion tube has a length of 10 cm or less. The length is less than or equal to 6cm and greater than or equal to 2cm.

进一步地，所述第二抽吸导管的外径小于等于2.1mm且大于等于1.2mm，所述第二抽吸导管的内径小于等于1.9mm且大于等于0.9mm。Further, the outer diameter of the second suction conduit is less than or equal to 2.1 mm and greater than or equal to 1.2 mm, and the inner diameter of the second suction conduit is less than or equal to 1.9 mm and greater than or equal to 0.9 mm.

一种所述球囊抽吸导管装置的使用方法包括以下动作：A method of using the balloon suction catheter device includes the following actions:

a、将所述抽吸导管远端推送到目标位置；a. Push the distal end of the suction catheter to the target position;

b、将所述球囊充盈；b. inflating the balloon;

c、将所述Y阀第二端连接至抽吸系统。c. Connect the second end of the Y valve to the suction system.

与现有技术相比，本发明至少具有如下有益技术效果：Compared with the prior art, the present invention at least has the following beneficial technical effects:

1、结构简单，减少医生在手术过程操作的复杂性，减少手术时间；1. The structure is simple, which reduces the complexity of the doctor's operation during the operation and reduces the operation time;

2、较好推送性，近端外套管的存在，使其远端具有更好的轴向支撑力，更容易使其尖端通过弯曲段，减少导引导管的使用；2. Better pushability, the existence of the proximal outer sleeve makes the distal end have better axial support, making it easier for the tip to pass through the curved section, reducing the use of guiding catheters;

3、减少栓子逃逸可能性，近端球囊的存在，使其血流减缓，减少脑动脉的血流，使其在抽吸过程中，取栓更为彻底，减少碎小血栓的逃逸，减少脑血栓后遗症的几率；3. Reduce the possibility of emboli escaping. The presence of the proximal balloon slows down the blood flow and reduces the blood flow of the cerebral arteries, so that during the suction process, the embolectomy is more thorough and the escape of small thrombi is reduced. Reduce the chance of cerebral thrombosis sequelae;

4、多样性，球囊抽吸导管可与支架取栓配合使用，同时球囊的存在也减少了封堵球囊导管的使用，减少栓子逃逸几率；4. Diversity, the balloon suction catheter can be used in conjunction with stent thrombectomy, and the presence of the balloon also reduces the use of blocking balloon catheters and reduces the chance of emboli escaping;

5、减少病人痛苦性，远端段亲水涂层的存在，减少血管与血管壁的摩擦，减少病人痛苦，增加导管顺利进入颅内血管的几率；5. Reduce the pain of the patient, the existence of the hydrophilic coating on the distal segment, reduce the friction between the blood vessel and the blood vessel wall, reduce the pain of the patient, and increase the probability of the catheter entering the intracranial blood vessel smoothly;

6、减少病人开支，球囊抽吸导管功能的多样性，可减少多个导管组合使用，减少病人费用支出。6. Reduce patient expenses. The variety of functions of balloon suction catheters can reduce the combined use of multiple catheters and reduce patient expenses.

以下将结合附图对本发明的构思、具体结构及产生的技术效果作进一步说明，以充分地了解本发明的目的、特征和效果。The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present invention.

附图说明Description of drawings

图1是本发明的一个较佳实施例的结构示意图；Fig. 1 is the structural representation of a preferred embodiment of the present invention;

图2是本发明图1所示实施例的应力扩散管结构示意图；FIG. 2 is a schematic structural diagram of the stress diffusion tube of the embodiment shown in FIG. 1 of the present invention;

图3是本发明图1所示实施例的抽吸导管布置示意图。Fig. 3 is a schematic diagram of the arrangement of the suction catheter of the embodiment shown in Fig. 1 of the present invention.

其中，1-外套管，2-抽吸导管，3-球囊，4-第一显影环，5-第二显影环，6-应力扩散管，7-Y型手柄，8-Y阀，9-无针接头，21-第二抽吸导管，61-环切结构。Among them, 1-outer cannula, 2-suction catheter, 3-balloon, 4-first developing ring, 5-second developing ring, 6-stress diffusion tube, 7-Y-handle, 8-Y valve, 9 - Needleless connector, 21 - Second suction catheter, 61 - Circumcision structure.

具体实施方式Detailed ways

以下参考说明书附图介绍本发明的多个优选实施例，使其技术内容更加清楚和便于理解。本发明可以通过许多不同形式的实施例来得以体现，本发明的保护范围并非仅限于文中提到的实施例。The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

在附图中，结构相同的部件以相同数字标号表示，各处结构或功能相似的组件以相似数字标号表示。附图所示的每一组件的尺寸和厚度是任意示出的，本发明并没有限定每个组件的尺寸和厚度。为了使图示更清晰，附图中有些地方适当夸大了部件的厚度。In the drawings, structurally identical components are denoted by the same numerals, and structurally or functionally similar components are denoted by like numerals throughout. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thicknesses of components are appropriately exaggerated in some places in the drawings.

实施例1：Example 1:

如图1和图3所示，本实施例提供了一种用于颅内取栓的球囊抽吸导管装置，包括外套管1、抽吸导管2、球囊3、第一显影环4、第二显影环5、应力扩散管6、Y型手柄7、Y阀8、无针接头9，抽吸导管2为管状构件，外套管1和抽吸导管2同轴设置，抽吸导管2近端部分设置于外套管1内腔，设置于外套管1内腔的抽吸导管2为第一抽吸导管，设置于外套管1内腔以外的抽吸导管2为第二抽吸导管21，第一抽吸导管与外套管1构成双腔结构；球囊3固定设置在外套管1远端，第一显影环4固定设置在外套管1远端且靠近球囊3处，第二显影环5固定设置在抽吸导管2远端，外套管1近端连接应力扩散管6远端，应力扩散管6的材质为不锈钢。As shown in FIG. 1 and FIG. 3 , this embodiment provides a balloon suction catheter device for intracranial thrombectomy, including an outer sleeve 1, a suction catheter 2, a balloon 3, a first developing ring 4, The second developing ring 5, the stress diffusion tube 6, the Y-shaped handle 7, the Y valve 8, the needleless joint 9, the suction catheter 2 is a tubular member, the outer sleeve 1 and the suction catheter 2 are coaxially arranged, and the suction catheter 2 is close to the The end portion is arranged in the inner cavity of the outer casing 1, the suction conduit 2 arranged in the inner cavity of the outer casing 1 is the first suction conduit, and the suction conduit 2 arranged outside the inner cavity of the outer casing 1 is the second suction conduit 21, The first suction catheter and the outer sleeve 1 form a double-lumen structure; the balloon 3 is fixedly arranged at the distal end of the outer sleeve 1, the first developing ring 4 is fixedly arranged at the distal end of the outer sleeve 1 and close to the balloon 3, and the second developing ring 5 is fixedly arranged at the distal end of the suction catheter 2, the proximal end of the outer sleeve 1 is connected to the distal end of the stress diffusion tube 6, and the material of the stress diffusion tube 6 is stainless steel.

第一显影环4和第二显影环5用于显影标记。The first developingring 4 and the second developingring 5 are used for developing marks.

Y型手柄7包括手柄第一端、手柄第二端、手柄第三端，手柄第一端、手柄第二端和手柄第三端内腔连通，手柄第一端和手柄第二端同轴设置，手柄第三端的中心轴线与手柄第一端的中心轴线的夹角为钝角，手柄第一端与应力扩散管6近端连接；Y阀8包括Y阀8第一端、Y阀8第二端、Y阀8第三端，Y阀8第一端、Y阀8第二端和Y阀8第三端内腔连通，Y阀8第一端和Y阀8第二端同轴设置，Y阀8第三端的中心轴线与Y阀8第一端的中心轴线的夹角为钝角，Y阀8第一端与手柄第二端连接；无针接头9设置在手柄第三端。The Y-shapedhandle 7 includes a first handle end, a second handle end, and a third handle end. , the angle between the central axis of the third end of the handle and the central axis of the first end of the handle is an obtuse angle, and the first end of the handle is connected with the proximal end of thestress diffusion tube 6; theY valve 8 includes the first end of theY valve 8, the second end of theY valve 8 end, the third end of theY valve 8, the first end of theY valve 8, the second end of theY valve 8 and the inner cavity of the third end of theY valve 8 are connected, the first end of theY valve 8 and the second end of theY valve 8 are coaxially arranged, The included angle between the central axis of the third end of theY valve 8 and the central axis of the first end of theY valve 8 is an obtuse angle. The first end of theY valve 8 is connected to the second end of the handle; the needleless connector 9 is provided at the third end of the handle.

第二抽吸导管21外表面设置有亲水涂层，可减少推送阻力及病人痛苦，亲水涂层覆盖第二抽吸导管21远端，亲水涂层由第二抽吸导管21远端开始朝第二抽吸导管21近端设置，亲水涂层的长度小于等于第二抽吸导管21长度，本实施例优选为亲水涂层的长度小于第二抽吸导管21长度2cm。The outer surface of thesecond suction catheter 21 is provided with a hydrophilic coating, which can reduce the pushing resistance and the pain of the patient. Begin to set towards the proximal end of thesecond suction catheter 21, the length of the hydrophilic coating is less than or equal to the length of thesecond suction catheter 21, in this embodiment, the length of the hydrophilic coating is preferably 2 cm less than the length of thesecond suction catheter 21.

如图2所示，应力扩散管6远端设置有螺旋状的环切结构61，环切结构61的螺距由远端往近端逐步增大；环切结构61的螺旋线与应力扩散管6中心轴线的夹角小于等于90°且大于等于30°，本实施例优选为45°。As shown in FIG. 2 , the distal end of thestress diffusion tube 6 is provided with ahelical circumcision structure 61 , and the pitch of thecircumcision structure 61 gradually increases from the distal end to the proximal end; the helix of thecircumcision structure 61 and thestress diffusion tube 6 The included angle of the central axis is less than or equal to 90° and greater than or equal to 30°, and is preferably 45° in this embodiment.

外套管1和第二抽吸导管21的长度之和为球囊抽吸导管装置的有效长度，有效长度小于等于150cm且大于等于90cm，本实施例优选为100cm。The sum of the lengths of theouter sleeve 1 and thesecond suction catheter 21 is the effective length of the balloon suction catheter device.

第二抽吸导管21的长度小于等于40cm且大于等于10cm，本实施例优选为20cm；第二抽吸导管21的外径小于等于2.1mm且大于等于1.2mm，本实施例优选为1.5mm，第二抽吸导管21的内径小于等于1.9mm且大于等于0.9mm，本实施例优选为1.2mm。The length of thesecond suction conduit 21 is less than or equal to 40 cm and greater than or equal to 10 cm, preferably 20 cm in this embodiment; the outer diameter of thesecond suction conduit 21 is less than or equal to 2.1 mm and greater than or equal to 1.2 mm, preferably 1.5 mm in this embodiment, The inner diameter of thesecond suction conduit 21 is less than or equal to 1.9 mm and greater than or equal to 0.9 mm, and is preferably 1.2 mm in this embodiment.

应力扩散管6的长度小于等于6cm且大于等于2cm，本实施例优选为4cm。The length of thestress diffusion tube 6 is less than or equal to 6 cm and more than or equal to 2 cm, and is preferably 4 cm in this embodiment.

本实施例的球囊抽吸导管装置的在工作时，首先将抽吸导管2远端推送到目标位置，然后将球囊3充盈，再将抽吸端口连接至抽吸系统，球囊3膨胀可以减缓近端血流流向脑血管远端的速度，减少在抽吸过程中细小血栓流向脑血管远端，提高完全取栓的机率，减少取栓后的并发症，同时近端外套管1的使用，增加了远端推送时的支撑力，减少导引导管的使用。When the balloon suction catheter device of this embodiment is working, the distal end of thesuction catheter 2 is first pushed to the target position, and then theballoon 3 is inflated, and then the suction port is connected to the suction system, and theballoon 3 is inflated. It can slow down the speed of proximal blood flow to the distal end of the cerebral blood vessel, reduce the flow of small thrombus to the distal end of the cerebral blood vessel during the suction process, improve the probability of complete thrombectomy, and reduce the complications after thrombectomy. It increases the support force when pushing the distal end and reduces the use of the guide catheter.

实施例2：Example 2:

在实施例1的基础上，第二抽吸导管21远端设置为圆锥形的尖端，外套管1采用Pebax制成，第二显影环5固定设置在第二抽吸导管21的尖端，第一显影环4和第二显影环5标记抽吸导管尖端和球囊3位置；球囊抽吸导管装置的有效长度为90cm，第二抽吸导管21的长度为10cm，亲水涂层长度为8cm，第二抽吸导管21的外径为1.2mm，第二抽吸导管21的内径为0.9mm。On the basis of Example 1, the distal end of thesecond suction catheter 21 is set as a conical tip, theouter sleeve 1 is made of Pebax, the second developingring 5 is fixedly arranged on the tip of thesecond suction catheter 21, the first Thedevelopment ring 4 and thesecond development ring 5 mark the position of the suction catheter tip and theballoon 3; the effective length of the balloon suction catheter device is 90 cm, the length of thesecond suction catheter 21 is 10 cm, and the length of the hydrophilic coating is 8 cm , the outer diameter of thesecond suction conduit 21 is 1.2 mm, and the inner diameter of thesecond suction conduit 21 is 0.9 mm.

实施例3：Example 3:

在实施例2的基础上，球囊抽吸导管装置的有效长度为150cm，第二抽吸导管21的长度为40cm，亲水涂层长度为38cm，第二抽吸导管21的外径为2.1mm，第二抽吸导管21的内径为1.9mm。On the basis of Example 2, the effective length of the balloon suction catheter device is 150 cm, the length of thesecond suction catheter 21 is 40 cm, the length of the hydrophilic coating is 38 cm, and the outer diameter of thesecond suction catheter 21 is 2.1 mm, and the inner diameter of thesecond suction conduit 21 is 1.9 mm.

实施例4：Example 4:

在实施例1的基础上，外套管1采用尼龙和Pebax制成，球囊抽吸导管装置的有效长度为90cm，第二抽吸导管21的长度为10cm，亲水涂层长度为8cm，第二抽吸导管21的外径为2.1mm，第二抽吸导管21的内径为1.9mm。On the basis of Example 1, theouter sleeve 1 is made of nylon and Pebax, the effective length of the balloon suction catheter device is 90cm, the length of thesecond suction catheter 21 is 10cm, the length of the hydrophilic coating is 8cm, the first The outer diameter of thesecond suction conduit 21 is 2.1 mm, and the inner diameter of thesecond suction conduit 21 is 1.9 mm.

实施例5：Example 5:

在实施例2的基础上，球囊抽吸导管装置的有效长度为150cm，第二抽吸导管21的长度为40cm，亲水涂层长度为38cm，第二抽吸导管21的外径为1.2mm，第二抽吸导管21的内径为0.9mm。On the basis of Example 2, the effective length of the balloon suction catheter device is 150 cm, the length of thesecond suction catheter 21 is 40 cm, the length of the hydrophilic coating is 38 cm, and the outer diameter of thesecond suction catheter 21 is 1.2 cm mm, and the inner diameter of thesecond suction conduit 21 is 0.9 mm.

实施例6：Example 6:

在实施例2的基础上，球囊抽吸导管装置的有效长度为130cm，第二抽吸导管21的长度为38cm，亲水涂层长度为36cm，第二抽吸导管21的外径为2.0mm，第二抽吸导管21的内径为1.8mm。On the basis of Example 2, the effective length of the balloon suction catheter device is 130 cm, the length of thesecond suction catheter 21 is 38 cm, the length of the hydrophilic coating is 36 cm, and the outer diameter of thesecond suction catheter 21 is 2.0 cm. mm, and the inner diameter of thesecond suction conduit 21 is 1.8 mm.

以上详细描述了本发明的较佳具体实施例。应当理解，本领域的普通技术无需创造性劳动就可以根据本发明的构思作出诸多修改和变化。因此，凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案，皆应在由权利要求书所确定的保护范围内。The preferred embodiments of the present invention have been described in detail above. It should be understood that many modifications and changes can be made according to the concept of the present invention by those skilled in the art without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope determined by the claims.

Claims

1. A balloon suction catheter device for intracranial thrombus extraction is characterized by comprising an outer sleeve, a suction catheter, a balloon, a first developing ring, a second developing ring and a stress diffusion tube, wherein the suction catheter is a tubular member, the outer sleeve and the suction catheter are coaxially arranged, the proximal end part of the suction catheter is arranged in the inner cavity of the outer sleeve, the suction catheter arranged in the inner cavity of the outer sleeve is a first suction catheter, the suction catheter arranged outside the inner cavity of the outer sleeve is a second suction catheter, and the first suction catheter and the outer sleeve form a double-cavity structure; the sacculus is fixed to be set up the outer tube distal end, first development ring is fixed to be set up the outer tube distal end just is close to the sacculus, second development ring is fixed to be set up the suction catheter distal end, the outer tube near-end is connected the stress diffusion tube distal end.

2. The balloon aspiration catheter device for intracranial thrombectomy of claim 1, further comprising a Y-handle comprising a first handle end, a second handle end, and a third handle end, wherein the first handle end, the second handle end, and the third handle end are in lumen communication, wherein the first handle end and the second handle end are coaxially disposed, wherein a central axis of the third handle end forms an obtuse angle with a central axis of the first handle end, and wherein the first handle end is connected to the proximal stress diffusion tube end.

3. The balloon aspiration catheter device for intracranial thrombectomy of claim 2, further comprising a Y-valve first end, a Y-valve second end, and a Y-valve third end, the Y-valve first end, the Y-valve second end, and the Y-valve third end being in lumen communication, the Y-valve first end and the Y-valve second end being coaxially disposed, a central axis of the Y-valve third end being at an obtuse angle with a central axis of the Y-valve first end, the Y-valve first end being connected to the handle second end.

4. A balloon aspiration catheter device for intracranial thrombectomy as in claim 3, further comprising a needle-free connector disposed at the third end of the handle.

5. A balloon aspiration catheter device for intracranial thrombectomy as in claim 4, wherein the second aspiration catheter outer surface is provided with a hydrophilic coating covering the second aspiration catheter distal end, the hydrophilic coating having a length equal to or less than the second aspiration catheter length.

6. A balloon aspiration catheter device for intracranial thrombectomy according to claim 5, wherein the stress spreader tube is distally provided with a helical circumferential cut having a pitch that increases progressively from the distal end to the proximal end.

7. A balloon aspiration catheter device for intracranial thrombectomy as in claim 6, wherein the stress-diffusing tube is stainless steel.

8. A balloon aspiration catheter device for intracranial thrombectomy according to claim 7, wherein the sum of the lengths of the outer sheath and the second aspiration catheter is 150cm or less and 90cm or more, the length of the second aspiration catheter is 40cm or less and 10cm or more, and the length of the stress diffusion tube is 6cm or less and 2cm or more.

9. A balloon aspiration catheter device for intracranial thrombectomy according to claim 8, wherein the second aspiration catheter has an outer diameter of 2.1mm or less and 1.2mm or more and an inner diameter of 1.9mm or less and 0.9mm or more.

10. A method of using a balloon aspiration catheter device for intracranial thrombectomy as in any of claims 1-9, comprising the acts of:

a. advancing the distal end of the aspiration catheter to a target location;

b. inflating the balloon;

c. connecting the Y-valve second end to a suction system.