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CN104434263A - Regulating intracranial intravascular thrombus extraction device - Google Patents

Regulating intracranial intravascular thrombus extraction device
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Publication number
CN104434263A
CN104434263ACN201410717947.4ACN201410717947ACN104434263ACN 104434263 ACN104434263 ACN 104434263ACN 201410717947 ACN201410717947 ACN 201410717947ACN 104434263 ACN104434263 ACN 104434263A
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thrombus
retriever
guide wire
fixedly connected
remover
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黄清海
刘建民
沈洁
吕楠
王驰
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Second Military Medical University SMMU
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Second Military Medical University SMMU
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Abstract

Translated fromChinese

本发明涉及一种可调控颅内血管取栓装置,所述取栓装置设有调节导丝、取栓器、外固定鞘,所述取栓器一端与外固定鞘通过固定器固定连接;所述取栓器另一端与头端显影通过固定器固定连接;所述的头端显影上还固定连接调节导丝;所述的调节导丝贯穿外固定鞘和取栓器,并与手柄固定连接;所述手柄上设有旋钮和刻度尺。其优点表现在:操作性强,可精确调控取栓器的位置,直观控制取栓器直径大小,血栓捕获充分,且不容易脱落;该取栓装置不仅可以牢固固定血栓,并且相较于传统自膨式取栓器更具可控性及安全性;通过旋钮和刻度尺控制调节导丝,从而控制取栓器的位置以及展开位置和收回位置,控制精确,误差小。

The invention relates to an adjustable thrombus retrieval device for intracranial blood vessels. The thrombus retrieval device is provided with an adjustment guide wire, a thrombus retriever, and an external fixation sheath, and one end of the thrombus retriever is fixedly connected to the external fixation sheath through a fixator; The other end of the thrombus remover is fixedly connected with the head-end development through a fixer; the head-end development is also fixedly connected with an adjustment guide wire; the adjustment guide wire runs through the external fixation sheath and the thrombus remover, and is fixedly connected with the handle ; The handle is provided with a knob and a scale. Its advantages are: strong operability, precise control of the position of the thrombus retriever, intuitive control of the diameter of the thrombus retriever, sufficient thrombus capture, and not easy to fall off; the thrombus retrieval device can not only firmly fix the thrombus, but also compared with traditional The self-expanding thrombectomy is more controllable and safe; the guide wire is controlled and adjusted through the knob and scale, so as to control the position of the retriever, the deployed position and the retracted position, with precise control and small error.

Description

Translated fromChinese
一种可调控颅内血管取栓装置An adjustable thrombectomy device for intracranial blood vessels

技术领域technical field

本发明涉及医疗器械技术领域,具体地说,是一种可调控颅内血管取栓装置。The invention relates to the technical field of medical devices, in particular to an adjustable thrombectomy device for intracranial blood vessels.

背景技术Background technique

目前,随着人口的老龄化,在老龄化人群中,因老年人脑血管老化,血液在血管系统血管内面剥落处易形成血栓。At present, with the aging of the population, in the aging population, due to the aging of the cerebral blood vessels of the elderly, the blood is prone to form thrombus at the place where the inner surface of the blood vessel peels off in the vascular system.

现有技术中,关于使用器械取血栓有以下几个方面:In the prior art, there are the following aspects regarding the use of instruments to remove thrombus:

Chopko等在2000年报道了采用鹅颈式血管内捕获器成功取出来大脑血栓,立即实现了完全的血管再通。Chopko et al. reported in 2000 that the cerebral thrombus was successfully removed using a gooseneck endovascular capture device, and complete vascular recanalization was achieved immediately.

2004年,Merci装置获得FDA批准用于临床,Merci装置由三部分组成,镍钛合金的记忆导丝,其末端卷曲成环状,一个微导管以及一个球囊支持的引导管。In 2004, the Merci device was approved by the FDA for clinical use. The Merci device consists of three parts, a nickel-titanium alloy memory guide wire whose end is coiled into a loop, a microcatheter, and a balloon-supported guide tube.

Merci取栓器式用超弹的镍钛记忆合金制成的,远端呈5个直径逐渐变小的螺旋环状,环状类似开瓶钻。Merci装置从股动脉插入,然后在血管造影的作用指引下小心送入阻塞的脑动脉,展开口可变成螺旋状像开瓶钻一样,“抓住”血凝块后,Merci装置和血凝块退入经它大的球囊导管内。The Merci retriever is made of super-elastic nickel-titanium memory alloy, and the distal end is in the shape of 5 spiral rings with gradually smaller diameters, which are similar to corkscrews. The Merci device is inserted from the femoral artery, and then carefully sent into the blocked cerebral artery under the guidance of angiography. The opening can be turned into a spiral shape like a corkscrew. After "catching" the blood clot, the Merci device and the blood clot The block is retracted into a large balloon catheter through it.

2006年,phonex血栓取出装置在欧洲被用于急性脑血管闭塞,它是一种类似于毛刷样的装置,其核心是一根微导丝,周边是长度不等的呈栅栏样排列的微丝结构。In 2006, the phonex thrombus removal device was used in Europe for acute cerebrovascular occlusion. silk structure.

中国专利文献CN201220389333.4,申请日2012年08月07日,专利名称为颅内血管取栓装置,公开了一种颅内血管取栓装置,该取栓装置包括取栓器,导引导丝、推拉导丝和外鞘管,该取栓装置可以牢牢固定血栓,有效防止血栓的脱落。Chinese patent document CN201220389333.4, application date August 07, 2012, the patent name is intracranial blood vessel thrombectomy device, discloses a kind of intracranial blood vessel thrombectomy device, the thrombectomy device includes a thrombectomy device, a guide wire, Pushing and pulling the guide wire and the outer sheath, the thrombus retrieval device can firmly fix the thrombus and effectively prevent the thrombus from falling off.

上述关于颅内血管取栓装置在把取栓器输送到血管病变位置时,通常是把取栓器收回在外鞘内,待外鞘到达病变位置,再把取栓器在外鞘中输出来展开,这种方式因从外鞘中输出取栓器时外鞘或取栓器可能移位,不能精确控制取栓器的位置;甚至可能因操作不当,人体抖动或其他外界因素影响取栓器控制,使得取栓装置损伤血管内膜,内皮细胞发生变性、坏死脱落、内皮下的胶原纤维裸露,内源型凝血系统被激活,促使更多的血栓形成;其次,这些取栓装置在捕获血栓时仅依靠骨架自膨胀径向支撑力无法根据术者需求调节,不同患者血管直径大小不同,在捕获血栓之后回收时,无法根据血管直径调节取栓器直径及径向支撑力;再有,在抓捕血栓时,容易遗漏边缘的血栓,且在收回取栓装置时,血栓容易脱落。When the above-mentioned intracranial vascular thrombectomy device transports the thrombus retriever to the vascular lesion site, it usually retracts the thrombus retriever in the outer sheath, and when the outer sheath reaches the lesion position, then outputs the thrombus retriever in the outer sheath for deployment. In this way, the outer sheath or the thrombus retriever may shift when the thrombus retriever is output from the outer sheath, and the position of the thrombus retriever cannot be accurately controlled; even improper operation, human body shaking or other external factors may affect the control of the thrombus retriever. The thrombectomy device damages the intima of the vessel, the endothelial cells undergo denaturation, necrosis, and collagen fibers are exposed, and the endogenous coagulation system is activated to promote more thrombus formation; secondly, these thrombus retrieval devices can only capture thrombus Relying on the self-expanding radial support force of the skeleton cannot be adjusted according to the operator's needs. Different patients have different vessel diameters. When recovering after capturing thrombus, the diameter and radial support force of the thrombus retriever cannot be adjusted according to the vessel diameter; In the case of thrombus, it is easy to miss the thrombus at the edge, and when the thrombus retrieval device is retracted, the thrombus is easy to fall off.

综上所述,亟需一种精确调节控制取栓器直径,操作性强,不易移位,抓捕血栓范围广,取出血栓不易脱落的可调控颅内血管取栓装置,但是关于这种装置目前还未见报道。In summary, there is an urgent need for an adjustable intracranial vascular thrombus retrieval device that can precisely adjust and control the diameter of the thrombus retriever, has strong operability, is not easy to shift, captures thrombus in a wide range, and is not easy to fall off after taking out the thrombus. There is no report yet.

发明内容Contents of the invention

本发明的目的是针对现有技术中的不足,提供一种精确调节控制取栓器直径,操作性强,不易移位,抓捕血栓范围广,取出血栓不易脱落的可调控颅内血管取栓装置。The purpose of the present invention is to address the deficiencies in the prior art, to provide an adjustable intracranial blood vessel thrombus retriever that precisely adjusts and controls the diameter of the thrombus retriever, has strong operability, is not easy to shift, captures thrombus in a wide range, and is not easy to fall off after taking out the thrombus. device.

为实现上述目的,本发明采取的技术方案是:For realizing above-mentioned object, the technical scheme that the present invention takes is:

一种可调控颅内血管取栓装置,所述取栓装置设有调节导丝、取栓器、外固定鞘;所述的取栓器一端与外固定鞘通过固定器固定连接;所述取栓器另一端与头端显影通过固定器固定连接;所述的头端显影上还固定连接调节导丝;所述的调节导丝贯穿外固定鞘和取栓器;所述的外固定鞘为中空结构;所述调节导丝与手柄固定连接;所述手柄设有刻度尺;所述手柄上设有旋钮,位于手柄前端。An adjustable thrombectomy device for intracranial blood vessels, the thrombus removal device is provided with an adjustment guide wire, a thrombus remover, and an external fixation sheath; one end of the thrombus remover is fixedly connected to the outer fixation sheath through a fixator; The other end of the suppository is fixedly connected with the head-end development through a fixer; the head-end development is also fixedly connected with an adjustment guide wire; the adjustment guide wire runs through the external fixation sheath and the thrombus remover; the external fixation sheath is Hollow structure; the adjustment guide wire is fixedly connected with the handle; the handle is provided with a scale; the handle is provided with a knob located at the front end of the handle.

所述的取栓器由具有形状记忆效应的的金属丝材或者具有高弹性的高分子丝材编织成网状。The thrombus retriever is woven into a net shape by metal wires with shape memory effect or polymer wires with high elasticity.

所述取栓器两端收拢固定于一点,所述取栓器两端呈“漏斗”状。The two ends of the thrombus retriever are folded and fixed at one point, and the two ends of the thrombus retriever are in the shape of a "funnel".

所述取栓器展开状态下呈椭圆形,与血管内壁贴合。The thrombus retriever is in an oval shape when it is unfolded, and fits closely to the inner wall of the blood vessel.

所述的取栓器上设有网丝,部分网丝上涂有显影剂。The said thrombus remover is provided with meshes, some of which are coated with developer.

本发明优点在于:The present invention has the advantage that:

1、本发明的一种可调控颅内血管取栓装置,操作性强,不易移位,可精确调控取栓器的位置,直观控制取栓器直径大小,血栓捕获充分,且不容易脱落;1. An adjustable intracranial blood vessel thrombectomy device of the present invention has strong operability, is not easy to shift, can precisely control the position of the thrombus retriever, intuitively controls the diameter of the thrombus retriever, fully captures the thrombus, and is not easy to fall off;

2、该取栓装置不仅可以牢固固定血栓,并且相较于传统自膨式取栓器更具可控性及安全性,采用取栓器与外固定鞘间固定连接,防止取栓器抖动;2. The thrombectomy device can not only firmly fix the thrombus, but also is more controllable and safer than the traditional self-expanding thrombus retriever. It adopts a fixed connection between the thrombus retriever and the external fixation sheath to prevent the thrombus retriever from shaking;

3、通过旋钮和刻度尺控制调节导丝,从而控制取栓器的直径以及展开位置和收回位置,控制精确,误差小。3. Control and adjust the guide wire through the knob and scale, so as to control the diameter of the thrombus retriever, the deployment position and the retraction position, with precise control and small error.

附图说明Description of drawings

附图1是本发明的一种可调控颅内血管取栓装置收回结构示意图。Accompanying drawing 1 is a schematic diagram of retracting structure of an adjustable intracranial blood vessel thrombectomy device of the present invention.

附图2是取栓器收回状态下结构示意图。Accompanying drawing 2 is the structural diagram of the withdrawn state of the thrombus retriever.

附图3是本发明的一种可调控颅内血管取栓装置展开结构示意图。Accompanying drawing 3 is a schematic diagram of the unfolded structure of an adjustable intracranial blood vessel thrombectomy device of the present invention.

附图4是取栓器展开状态下的结构示意图。Accompanying drawing 4 is the structural schematic view of the thrombus remover in the unfolded state.

具体实施方式Detailed ways

下面结合附图对本发明提供的具体实施方式作详细说明。The specific embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

附图中涉及的附图标记和组成部分如下所示:The reference signs and components involved in the accompanying drawings are as follows:

1.手柄                       11.旋钮1. Handle 11. Knob

12.调节导丝                  13.外固定鞘12. Adjust the guide wire 13. External fixation sheath

14.固定器                    15.取栓器14. Retainer 15. Thrombectomy

16.头端显影                  17.血管16. Head development 17. Blood vessels

18.刻度尺18. Scale

实施例1Example 1

请参照图1,图1是本发明的一种可调控颅内血管取栓装置收回结构示意图。一种可调控颅内血管取栓装置,所述取栓装置设有调节导丝12、取栓器15、外固定鞘13;所述的取栓器15一端与外固定鞘13通过固定器14固定连接;所述取栓器15另一端与头端显影16通过固定器14固定连接;所述的头端显影16上还固定连接调节导丝12;所述的调节导丝12贯穿外固定鞘13和取栓器15;所述的外固定鞘13为中空结构;所述调节导丝12与手柄1固定连接;所述手柄1设有刻度尺18;所述手柄1上设有旋钮11,位于手柄1前端。Please refer to FIG. 1 . FIG. 1 is a schematic diagram of a retractable structure of an adjustable intracranial blood vessel thrombectomy device according to the present invention. An adjustable thrombectomy device for intracranial blood vessels. The thrombus removal device is provided with an adjustment guide wire 12, a thrombus remover 15, and an external fixation sheath 13; Fixedly connected; the other end of the thrombus remover 15 is fixedly connected to the head-end imaging device 16 through a fixer 14; the head-end imaging device 16 is also fixedly connected with an adjustment guide wire 12; the adjustment guide wire 12 runs through the outer fixation sheath 13 and a thrombus remover 15; the outer fixation sheath 13 is a hollow structure; the adjustment guide wire 12 is fixedly connected with the handle 1; the handle 1 is provided with a scale 18; the handle 1 is provided with a knob 11, Located at the front end of handle 1.

请参照图2,图2是取栓器收回状态下结构示意图。所述的取栓器15由具有形状记忆效应的的金属丝材或者具有高弹性的高分子丝材编织成网状;所述取栓器15两端收拢固定于一点;所述取栓器15两端呈“漏斗”状。Please refer to FIG. 2 . FIG. 2 is a schematic diagram of the structure of the thrombus retriever in a retracted state. The thrombus remover 15 is woven into a net shape by a metal wire with a shape memory effect or a polymer wire with high elasticity; both ends of the thrombus remover 15 are gathered and fixed at one point; Both ends are "funnel" shaped.

请参照图3,图3是本发明的一种可调控颅内血管取栓装置展开结构示意图。所述取栓器15展开状态下呈椭圆形,与血管17内壁贴合。Please refer to FIG. 3 . FIG. 3 is a schematic diagram of the unfolded structure of an adjustable intracranial blood vessel thrombectomy device according to the present invention. The thrombus remover 15 is in an oval shape when deployed, and fits closely to the inner wall of the blood vessel 17 .

请参照图4,图4是取栓器展开状态下的结构示意图。所述取栓器15展开状态下的径向直径大于收回状态下的径向直径;所述取栓器15展开状态下的横向长度小于收回状态下的横向长度;所述取栓器15设有网丝,部分网丝上涂有显影剂。Please refer to FIG. 4 . FIG. 4 is a schematic structural view of the thrombus remover in a deployed state. The radial diameter of the thrombus retriever 15 in the unfolded state is greater than the radial diameter in the retracted state; the lateral length of the thrombus retriever 15 in the deployed state is smaller than the lateral length in the retracted state; the thrombus retriever 15 is provided with Mesh, partially coated with developer.

需要说明的是:所述的刻度尺18和旋钮11配合使用,可精确控制调节导丝12的长度,通过控制调节导丝12的长度可精确控制取栓器15的位置;所述的外固定鞘13远端与取栓器15固定连接,近端与手柄1连接;所述外固定鞘13具有导向调节导丝12和固定取栓器15的位置的作用,当需要收回取栓器15,旋转旋钮11,推动调节导丝12即可;所述的固定器14通常选用金属材料,也可以采用高分子材料或其它材料制造;所述的固定器14用于连接固定连接取栓器15和外固定鞘13,同时固定连接头端显影16和取栓器15;所述的头端显影16用于定位指示取栓器15的位置;所述的取栓器的金属丝网上涂有显影剂,在X光射线下,能判断取栓器15在展开位置时与血管17内壁间的关系,直观显示取栓器15直径大小。It should be noted that: the scale 18 is used in conjunction with the knob 11 to precisely control and adjust the length of the guide wire 12, and the position of the thrombus remover 15 can be precisely controlled by controlling and adjusting the length of the guide wire 12; the external fixation The distal end of the sheath 13 is fixedly connected to the thrombus retriever 15, and the proximal end is connected to the handle 1; the outer fixed sheath 13 has the function of guiding and adjusting the position of the guide wire 12 and fixing the thrombus retriever 15. When the thrombus retriever 15 needs to be retracted, Rotate the knob 11 to push and adjust the guide wire 12; the fixer 14 is usually made of metal material, and can also be made of polymer materials or other materials; the fixer 14 is used to connect and fix the thrombus remover 15 and The outer fixation sheath 13 is fixedly connected with the head-end imaging 16 and the thrombus remover 15 at the same time; the head-end imaging 16 is used for positioning and indicating the position of the thrombus remover 15; the wire mesh of the thrombus remover is coated with developer , under X-rays, the relationship between the thrombus remover 15 and the inner wall of the blood vessel 17 can be judged when it is in the unfolded position, and the diameter of the thrombus remover 15 can be visually displayed.

取栓器15在展开位置时,呈椭圆形或圆柱形,其由金属丝材编织的网孔呈四边形;所述取栓器15两端的金属丝收拢和调节导丝12一起固定在固定器14中,通过调节导丝12可调节取栓器15直径及径向支撑力大小。在展开位置,金属网展开形成中空立体构造,取栓器15可在收缩位置及展开位置间自由调节,术者可根据术中血管17直径及血栓成分等实际需要调节取栓器15直径及径向支撑力大小,并且在取栓失败时取栓装置可调节至收缩位置从而安全撤出。When the thrombus remover 15 is in the unfolded position, it is elliptical or cylindrical, and the mesh woven by the metal wire is quadrangular; Among them, the diameter of the thrombus remover 15 and the radial support force can be adjusted by adjusting the guide wire 12. In the unfolded position, the metal mesh is unfolded to form a hollow three-dimensional structure, and the thrombus retriever 15 can be freely adjusted between the contracted position and the unfolded position. When the thrombectomy fails, the thrombectomy device can be adjusted to the retracted position for safe withdrawal.

本发明的可调控颅内血管取栓装置使用方法是:首先连接好整个取栓装置,手术前,向前推动调节导丝12,取栓器15在调节导丝12的推动下,径向变小,轴向变长,直到取栓器15的径向尺寸小于血管17直径;然后根据血管17病变位置,手握手柄1,结合头端显影16,准确输送取栓器15到达病变位置;调节手柄1上的旋钮11,使得调节导丝12往后拉,同时使得取栓器15轴向尺寸缩短,径向尺寸变大。当取栓器15径向方向与血管17内壁贴合时,停止展开取栓器15,待一定时间后,使得血管中病变区的血栓进入取栓器15中;最后手握手柄拉出整个取栓装置即可,此过程中可通过手柄调节取栓器径向使之适应不同管径血管,以减少血栓脱落。The method of using the controllable intracranial blood vessel thrombectomy device of the present invention is as follows: first connect the whole thrombectomy device, before the operation, push the adjustment guide wire 12 forward, and the thrombus remover 15 will radially change under the push of the adjustment guide wire 12. Smaller and longer in the axial direction until the radial dimension of the thrombus remover 15 is smaller than the diameter of the blood vessel 17; then according to the lesion position of the blood vessel 17, hold the handle 1 and combine with the head-end imaging 16 to accurately transport the thrombus remover 15 to the lesion position; adjust The knob 11 on the handle 1 makes the adjustment guide wire 12 pull back, and at the same time shortens the axial dimension of the thrombus retriever 15 and increases the radial dimension. When the radial direction of the thrombus remover 15 is in contact with the inner wall of the blood vessel 17, stop deploying the thrombus remover 15, and after a certain period of time, the thrombus in the diseased area of the blood vessel enters the thrombus remover 15; Thrombectomy device is enough. During this process, the radial direction of the thrombus remover can be adjusted through the handle to adapt to blood vessels of different diameters, so as to reduce thrombus shedding.

本发明的一种可调控颅内血管取栓装置,操作性强,不易移位,可精确调控取栓器15的位置,直接控制取栓器15直径大小,血栓捕获充分,且不容易脱落;该取栓装置不仅可以牢固固定血栓,并且相较于传统自膨式取栓器15更具可控性及安全性。采用取栓器15与外固定鞘13间固定连接,防止取栓器15抖动;通过旋钮11和刻度尺18控制调节导丝12,从而控制取栓器15的位置以及展开位置和收回位置,控制精确,误差小。The controllable intracranial blood vessel thrombus retrieval device of the present invention has strong operability, is not easy to shift, can precisely control the position of the thrombus retriever 15, directly controls the diameter of the thrombus retriever 15, fully captures the thrombus, and is not easy to fall off; The thrombus retrieval device can not only securely fix the thrombus, but also is more controllable and safer than the traditional self-expandable thrombus retriever 15 . Use the fixed connection between the thrombus remover 15 and the external fixation sheath 13 to prevent the thrombus remover 15 from shaking; control and adjust the guide wire 12 through the knob 11 and scale 18, so as to control the position of the thrombus remover 15 and the unfolded position and retracted position. Accurate, small error.

以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员,在不脱离本发明方法的前提下,还可以做出若干改进和补充,这些改进和补充也应视为本发明的保护范围。The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the method of the present invention, some improvements and supplements can also be made, and these improvements and supplements should also be considered Be the protection scope of the present invention.

Claims (5)

Translated fromChinese
1.一种可调控颅内血管取栓装置,其特征在于,所述取栓装置设有调节导丝、取栓器、外固定鞘;所述的取栓器一端与外固定鞘通过固定器固定连接;所述取栓器另一端与头端显影通过固定器固定连接;所述的头端显影上还固定连接调节导丝;所述的调节导丝贯穿外固定鞘和取栓器;所述的外固定鞘为中空结构;所述调节导丝与手柄固定连接;所述手柄设有刻度尺;所述手柄上设有旋钮,位于手柄前端。1. An adjustable thrombectomy device for intracranial blood vessels, characterized in that, the thrombectomy device is provided with an adjustment guide wire, a thrombus retriever, and an external fixation sheath; one end of the thrombus retriever and the external fixation sheath pass through the fixator fixedly connected; the other end of the thrombus remover is fixedly connected with the head-end development through a fixer; the head-end development is also fixedly connected with an adjustment guide wire; the adjustment guide wire runs through the external fixation sheath and the thrombus remover; The outer fixation sheath is a hollow structure; the adjustment guide wire is fixedly connected with the handle; the handle is provided with a scale; the handle is provided with a knob located at the front end of the handle.2.根据权利要求1所述的取栓装置,其特征在于,所述的取栓器由具有形状记忆效应的的金属丝材或者具有高弹性的高分子丝材编织成网状。2 . The thrombectomy device according to claim 1 , wherein the thrombus retriever is woven into a mesh shape by metal wires with shape memory effect or high-elasticity polymer wires. 3 .3.根据权利要求1所述的取栓装置,其特征在于,所述取栓器两端收拢固定于一点,所述取栓器两端呈“漏斗”状。3. The thrombectomy device according to claim 1, wherein both ends of the thrombus retriever are folded and fixed at one point, and the two ends of the thrombus retriever are in the shape of a "funnel".4.根据权利要求1所述的取栓装置,其特征在于,所述取栓器展开状态下呈椭圆形,与血管内壁贴合。4 . The thrombectomy device according to claim 1 , wherein the thrombus retriever is in an oval shape when deployed, and fits closely to the inner wall of the blood vessel. 5 .5.根据权利要求1所述的取栓装置,其特征在于,所述的取栓器上设有网丝,部分网丝上涂有显影剂。5. The thrombectomy device according to claim 1, characterized in that, the thrombus remover is provided with a mesh, and part of the mesh is coated with a developer.
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CN104771200B (en)*2015-04-152017-05-24中国人民解放军第二军医大学Intracranial aneurysm neck reconstruction device
CN104771200A (en)*2015-04-152015-07-15中国人民解放军第二军医大学Intracranial aneurysm neck reconstruction device
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CN113855159A (en)*2021-09-292021-12-31北京泰杰伟业科技有限公司 A combined control thrombectomy device
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CN114098906A (en)*2021-11-262022-03-01上海玮琅医疗科技有限公司A get and tie bracket component that is used for thrombus to clear away and catches thrombus that breaks
WO2023098584A1 (en)*2021-11-302023-06-08上海博畅医疗科技有限公司Thrombus removal device
CN114391920A (en)*2022-01-072022-04-26无锡天广泰医疗科技有限公司Thrombolytic stent catheter system and application method thereof
CN115634004A (en)*2022-12-262023-01-24北京久事神康医疗科技有限公司Tumor internal filling device
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