技术领域technical field
本实用新型涉及一种静脉滤器的回收装置，具体涉及一种下腔静脉滤器回收装置。The utility model relates to a recovery device for a vein filter, in particular to a recovery device for an inferior vena cava filter.
背景技术Background technique
深静脉血栓形成已成为危害人类健康的常见病，由于高龄化、发病率逐年上升，除了引起严重的肢体肿胀、下肢静脉曲张、静脉溃疡外，由于下肢深静脉内血栓脱落，随着血流方向流动至心脏，还可能导致严重的并发症肺动脉栓塞，肺梗死，死亡率极高，严重危及病人的生命。而传统手术治疗是在肺动脉栓塞发生后开胸肺动脉切开取栓、创伤大、危险性大。由于腔内技术的进步，目前已将腔静脉滤器置入下腔静脉作为预防肺动脉栓塞发生的唯一有创手段。下腔静脉滤器置入是采用经皮穿刺的方法，通过导管输送器，在下腔静脉放置金属滤器，滤器可以阻止大块血栓上行，预防致命性肺栓塞的发生或减少肺动脉栓塞的发生。与传统的外科手术相比，经皮下腔静脉滤器置放术简单、安全、有效，近年来已被广泛采用。Deep vein thrombosis has become a common disease that endangers human health. Due to the aging population and the incidence rate is increasing year by year, in addition to causing severe limb swelling, varicose veins, and venous ulcers, due to the detachment of deep vein thrombosis in the lower extremities, with the direction of blood flow If it flows to the heart, it may also lead to serious complications such as pulmonary embolism and pulmonary infarction, with extremely high mortality and seriously endangering the life of the patient. The traditional surgical treatment is to open the pulmonary artery and remove the thrombus after the occurrence of pulmonary embolism, which is traumatic and dangerous. Due to the advancement of endovascular technology, the vena cava filter has been inserted into the inferior vena cava as the only invasive means to prevent pulmonary embolism. The insertion of the inferior vena cava filter is a percutaneous puncture method. A metal filter is placed in the inferior vena cava through a catheter feeder. The filter can prevent large thrombus from ascending, prevent the occurrence of fatal pulmonary embolism or reduce the occurrence of pulmonary embolism. Compared with traditional surgery, percutaneous subcaval filter placement is simple, safe and effective, and has been widely used in recent years.
目前滤器种类较多，早起主要使用临时性滤器、永久性滤器，但由于永久性下腔静脉滤器长期留置体内可能继发下腔静脉血栓形成、滤器移位等严重并发症，而可回收滤器可作为临时性滤器、也可作为永久性滤器留置体内，同时，可回收滤器可在体内留置2-3周时间，避免了患者在可深静脉血栓急性期肺栓塞的发生，避免永久性下腔静脉滤器长期留置的危险性，有益于不适合长期留置下腔静脉滤器的患者。因此，腔静脉滤器在临床中使用越来越广泛。At present, there are many types of filters, and temporary filters and permanent filters are mainly used in the early stage. However, due to the long-term indwelling of the permanent inferior vena cava filter in the body, serious complications such as inferior vena cava thrombosis and filter displacement may occur, while the recyclable filter can be used As a temporary filter, it can also be left in the body as a permanent filter. At the same time, the recyclable filter can be left in the body for 2-3 weeks, avoiding the occurrence of pulmonary embolism in patients with deep vein thrombosis in the acute stage, and avoiding permanent inferior vena cava The risk of long-term filter retention is beneficial to patients who are not suitable for long-term retention of inferior vena cava filters. Therefore, vena cava filters are more and more widely used in clinical practice.
现有主流的可回收下腔静脉滤器是通过与其一体的尾钩放置在下腔静脉内或取出人体血管，如果尾钩在人体内变形，静脉滤器则无法通过取放钩取出，则患者如要回收滤器就需要行开腹手术取出滤器，加大了手术难度及患者的风险；另外，尾钩较小，不便于现有回收装置对其进行勾取，导致病人及医生需长时间暴露在射线中，对患者及医护人员造成伤害。The existing mainstream retrievable inferior vena cava filter is placed in the inferior vena cava or taken out of the human blood vessel through the tail hook integrated with it. If the tail hook is deformed in the human body, the venous filter cannot be taken out through the take-and-release hook. If the patient wants to recycle The filter requires a laparotomy to take out the filter, which increases the difficulty of the operation and the risk of the patient; in addition, the tail hook is small, which is not convenient for the existing recovery device to pick it up, resulting in long-term exposure of the patient and doctor to radiation , causing harm to patients and medical staff.
实用新型内容Utility model content
本实用新型是为了解决上述课题而进行的，目的在于提供一种下腔静脉滤器回收装置，在导引导丝的引导下进入目标血管，方便回收下腔静脉滤器。The utility model is developed to solve the above-mentioned problems, and the purpose is to provide a recovery device for an inferior vena cava filter, which enters a target blood vessel under the guidance of a guide wire, and facilitates the recovery of an inferior vena cava filter.
本实用新型提供了一种下腔静脉滤器回收装置，具有这样的特征，包括：10F外鞘管，在鞘芯的带动下移至目标血管，前端设置有弹性段，用于容纳压缩后的下腔静脉滤器，鞘管尾端设置有螺旋接口，用于推送外鞘管在人体血管内移动；半弯头导管，沿外鞘管内腔移至目标血管，前端头部弯曲，用于穿过下腔静脉滤器尾端处的网孔或丝间隙，形成圈套回折通道；回收导丝，设置在半弯头导管内，沿半弯头导管内腔移动，用于在回折通道处穿过下腔静脉滤器尾端处的网孔；以及圈套器，用于抓取穿过回折通道后的回收导丝。半弯头导管、回收导丝、圈套器通过螺旋接口进入10F外鞘管。The utility model provides a recovery device for an inferior vena cava filter, which has the following characteristics, comprising: a 10F outer sheath tube, which is driven by a sheath core to move to a target blood vessel, and an elastic section is arranged at the front end for accommodating the compressed inferior vena cava filter. For the vena cava filter, the tail end of the sheath tube is provided with a spiral interface, which is used to push the outer sheath tube to move in the human blood vessel; the semi-elbow catheter moves along the inner cavity of the outer sheath tube to the target blood vessel, and the front end is bent to pass through the lower blood vessel. The mesh or wire gap at the end of the vena cava filter forms a snare turn-back channel; the recovery guide wire is set in the half-bend catheter and moves along the lumen of the half-bend catheter to pass through the inferior vena cava at the turn-back channel Mesh at the end of the filter; and a snare to capture the retrieval guidewire after passing through the turn-back channel. The semi-elbow catheter, recovery guide wire, and snare enter the 10F outer sheath through the spiral interface.
在本实用新型提供的下腔静脉滤器回收装置中，还可以具有这样的特征：其中，弹性段采用弹性材料制备，优选材料为橡胶。In the inferior vena cava filter recovery device provided by the present invention, it may also have such a feature: wherein, the elastic section is made of elastic material, preferably rubber.
在本实用新型提供的下腔静脉滤器回收装置中，还可以具有这样的特征：其中，弹性段包含两层结构，内层沿径向设置有一对对称的狭缝，可方便内层之间的分离，内层采用硬质材料；外层将内层黏结，形成密闭通路，外层采用弹性材料。In the inferior vena cava filter recovery device provided by the utility model, it can also have such a feature: wherein, the elastic section includes a two-layer structure, and the inner layer is provided with a pair of symmetrical slits along the radial direction, which can facilitate the connection between the inner layers. Separation, the inner layer is made of hard material; the outer layer bonds the inner layer to form a closed passage, and the outer layer is made of elastic material.
在本实用新型提供的下腔静脉滤器回收装置中，还可以具有这样的特征：其中，弹性段长度为2公分。In the inferior vena cava filter recovery device provided by the utility model, it may also have such a feature: wherein, the length of the elastic section is 2 centimeters.
在本实用新型提供的下腔静脉滤器回收装置中，还可以具有这样的特征：其中，螺旋接口为Y阀三通结构，螺旋接口的一侧设有注液接口，用于经注液接口注液进行造影，外鞘管内腔构成注液的流动通道。In the inferior vena cava filter recovery device provided by the utility model, it can also have such a feature: wherein, the screw interface is a Y valve three-way structure, and one side of the screw interface is provided with a liquid injection interface, which is used for injection through the liquid injection interface. The liquid is contrasted, and the inner cavity of the outer sheath constitutes the flow channel for the liquid injection.
实用新型的作用和效果Function and effect of utility model
根据本实用新型所涉及的下腔静脉滤器回收装置，因为采用圈套技术，所以，本实用新型的下腔静脉滤器回收装置在整个回收过程可实现准确、安全操作，并可快速准确回收地滤器，缩短了手术时间，减少血管曝露在射线中的时间，进而减少对血管内壁可能造成损伤，能极大减轻病人痛苦。另外，本实用新型的下腔静脉滤器回收装置简单方便，且结构设计合理，成本较之现有的回收装置有所下降。再者，因为本回收装置采用先包裹后回收的方式，回收顺畅，较直接回撤滤器的回收方式相比，降低了滤器断裂或损伤血管的风险。According to the inferior vena cava filter recovery device involved in the utility model, because the trap technology is adopted, the inferior vena cava filter recovery device of the utility model can realize accurate and safe operation in the whole recovery process, and can quickly and accurately recover the filter, The operation time is shortened, the time of blood vessels exposed to rays is reduced, and the possible damage to the inner wall of blood vessels is reduced, which can greatly reduce the suffering of patients. In addition, the recovery device for the inferior vena cava filter of the utility model is simple and convenient, and has a reasonable structure design, and the cost is lower than that of the existing recovery device. Furthermore, because the recovery device adopts the method of wrapping first and then recovering, the recovery is smooth, and compared with the recovery method of directly withdrawing the filter, the risk of filter breakage or blood vessel damage is reduced.
附图说明Description of drawings
图1是本实用新型的实施例一中下腔静脉滤器回收装置的结构示意图；Fig. 1 is a schematic structural view of a recovery device for a middle and inferior vena cava filter in Embodiment 1 of the present utility model;
图2是本实用新型的实施例一中下腔静脉滤器回收装置使用时头端的剖视图；以及Fig. 2 is a cross-sectional view of the head end of the inferior vena cava filter recovery device according to Embodiment 1 of the present invention; and
图3是本实用新型的变形例一中下腔静脉滤器回收装置的结构示意图。Fig. 3 is a structural schematic diagram of a recovery device for a middle and inferior vena cava filter according to Modification 1 of the present invention.
具体实施方式detailed description
为了使本实用新型实现的技术手段、创作特征、达成目的与功效易于明白了解，以下实施例结合附图对本实用新型的下腔静脉滤器回收装置作具体阐述。In order to make the technical means, creative features, goals and effects of the present invention easy to understand, the following embodiments will specifically describe the inferior vena cava filter recovery device of the present invention in conjunction with the accompanying drawings.
实施例一Embodiment one
图1是本实施例一的下腔静脉滤器回收装置100的结构示意图，图2是本实施例一的下腔静脉滤器回收装置100使用时的头端的剖视图。FIG. 1 is a schematic structural view of the inferior vena cava filter recovery device 100 of the first embodiment, and FIG. 2 is a cross-sectional view of the head end of the inferior vena cava filter recovery device 100 of the first embodiment in use.
如图1、2所示，本实施例提供的下腔静脉滤器回收装置100包括：10F外鞘管(带鞘芯)1、半弯头导管2、回收导丝3以及圈套器4。As shown in FIGS. 1 and 2 , the inferior vena cava filter recovery device 100 provided in this embodiment includes: a 10F outer sheath tube (with a sheath core) 1 , a semi-elbow catheter 2 , a recovery guide wire 3 and a snare 4 .
10F外鞘管1在鞘芯的带动下移至目标血管，前端设置有弹性段11，可容纳收缩后的下腔静脉滤器5。弹性段11的长度可根据下腔静脉滤器的长短设置，目前优选的长度为2公分。弹性段11可采用弹性材料制成。弹性段11亦可采用两层结构，内层沿径向设置有一对对称的狭缝，可方便内层之间的分离，内层采用硬质材料；外层将内层黏结，形成密闭通路，外层采用弹性材料。弹性材料优选橡胶。硬质材料可选择塑料或医用不锈钢。外鞘管1尾端设置有螺旋接口12，用于推送外鞘管1在人体血管内移动。螺旋接口12中空，便于半弯头导管2、回收导丝3以及圈套器4的操作。The 10F outer sheath tube 1 is driven by the sheath core to move to the target blood vessel, and the front end is provided with an elastic section 11, which can accommodate the contracted inferior vena cava filter 5. The length of the elastic section 11 can be set according to the length of the inferior vena cava filter, and the preferred length is 2 cm at present. The elastic section 11 can be made of elastic material. The elastic section 11 can also adopt a two-layer structure. The inner layer is provided with a pair of symmetrical slits along the radial direction, which can facilitate the separation between the inner layers. The inner layer is made of hard material; the outer layer bonds the inner layer to form a closed passage. The outer layer is made of elastic material. The elastic material is preferably rubber. Hard material can choose plastic or medical stainless steel. The tail end of the outer sheath 1 is provided with a screw interface 12 for pushing the outer sheath 1 to move in the human blood vessel. The spiral interface 12 is hollow, which is convenient for the operation of the semi-elbow catheter 2 , the recovery guide wire 3 and the snare 4 .
半弯头导管2沿外鞘管1内腔移至目标血管。弯头套管2前端头部弯曲，可穿过下腔静脉滤器尾端处的网孔，在回收导丝3的引导下形成回折通道。半弯头导管2长度大于外鞘管1的长度。回收导丝3设置在半弯头导管2内，可沿半弯头导管2内腔移动，在回折通道处穿过下腔静脉滤器尾端处的网孔。圈套器4头端设置有套圈组件41，用于抓取穿过回折通道后的回收导丝3。回收导丝3的长度大于半弯头导管2的长度。The half-elbow catheter 2 is moved to the target blood vessel along the lumen of the outer sheath tube 1 . The front end of the elbow cannula 2 is bent and can pass through the mesh at the tail end of the inferior vena cava filter to form a turning channel under the guidance of the recovery guide wire 3 . The length of the half elbow catheter 2 is greater than the length of the outer sheath tube 1 . The recovery guide wire 3 is set in the semi-elbow catheter 2, can move along the lumen of the semi-elbow catheter 2, and pass through the mesh at the tail end of the inferior vena cava filter at the turn-back channel. The head end of the snare 4 is provided with a loop assembly 41 for grabbing the recovery guide wire 3 after passing through the turning channel. The length of the recovery guide wire 3 is greater than the length of the semi-elbow catheter 2 .
本实施例中的下腔静脉滤器回收装置的使用步骤如下：The steps of using the inferior vena cava filter recovery device in this embodiment are as follows:
1.导引导丝插入血管，移动到达目标血管段后固定，导引导丝起指引和建立通路的作用；1. The guide wire is inserted into the blood vessel, and fixed after moving to the target blood vessel segment. The guide wire acts as a guide and establishes a pathway;
2.推动10F外鞘管1的尾端的螺旋接口12，10F外鞘管1与外鞘管配套的鞘芯沿导引导丝形成的通路一同移至目标血管段后，鞘芯抽出10F外鞘管1，10F外鞘管1的内腔形成半弯头导管2的通道，鞘芯内空芯腔道，直径为0.038inch，便于0.035inch导丝通过；2. Push the screw interface 12 at the tail end of the 10F outer sheath tube 1, and the 10F outer sheath tube 1 and the sheath core matched with the outer sheath tube move to the target blood vessel segment along the path formed by the guide wire, and the sheath core pulls out the 10F outer sheath tube 1. The inner cavity of the 10F outer sheath tube 1 forms the channel of the semi-elbow catheter 2, and the hollow cavity in the sheath core has a diameter of 0.038 inches, which is convenient for the passage of a 0.035 inch guide wire;
3.半弯头导管2和回收导丝3在10F外鞘管1内移动至目标血管段后，半弯头导管2伸出10F外鞘管1，在回收导丝3的配合下穿过下腔静脉滤器5尾端处的网孔，半弯头导管2头端的弯头形成回收导丝3的回折通道；3. After the half-elbow catheter 2 and the recovery guide wire 3 move to the target blood vessel segment in the 10F outer sheath tube 1, the half-elbow catheter 2 extends out of the 10F outer sheath tube 1 and passes through the lower part with the cooperation of the recovery guide wire 3. The mesh at the tail end of the vena cava filter 5, and the elbow at the head end of the half-elbow catheter 2 form a turn-back channel for recovering the guide wire 3;
4.回收导丝3在半弯头导管2移动，穿过回折通道，即顺利绕过下腔静脉滤器尾端处的网孔，继续伸入回收导丝3，伸入回收导丝3的长度可根据圈套技术熟练程度决定；4. The recovery guide wire 3 moves in the semi-elbow catheter 2, passes through the turning channel, that is, smoothly bypasses the mesh at the end of the inferior vena cava filter, and continues to extend into the recovery guide wire 3, extending into the length of the recovery guide wire 3 It can be determined according to the technical proficiency of the trap;
5.伸入圈套器，圈套器头端设置有套圈组件41，套取回收导丝3后回拉，下腔静脉滤器5即被下腔静脉滤器回收装置抓住；5. Stretch into the snare, the head end of the snare is provided with a snare assembly 41, pull back the recovery guide wire 3, and the inferior vena cava filter 5 is caught by the inferior vena cava filter recovery device;
6.将下腔静脉滤器5拉至外鞘管1的前端时，弹性段11受到外力的作用撑开，下腔静脉滤器5顺利进入外鞘管1(由于回收导丝3嵌在下腔静脉滤器5尾端，下腔静脉滤器5无法完全收紧，可能无法顺利进入外鞘管1内，故而外鞘管1前端设置有弹性段11)；6. When the inferior vena cava filter 5 is pulled to the front end of the outer sheath tube 1, the elastic section 11 is stretched by the external force, and the inferior vena cava filter 5 smoothly enters the outer sheath tube 1 (because the recovery guide wire 3 is embedded in the inferior vena cava filter 5 tail end, the inferior vena cava filter 5 cannot be fully tightened, and may not be able to enter the outer sheath tube 1 smoothly, so the front end of the outer sheath tube 1 is provided with an elastic section 11);
7.将外鞘管1及其内部组件顺利抽取出人体。7. The outer sheath tube 1 and its internal components are smoothly extracted out of the human body.
变形例一Variation 1
在本变形例一中，对于和实施例一中相同的结构，给予相同的符号，并省略相同的说明。In the first modification, the same symbols are given to the same structures as those in the first embodiment, and the same descriptions are omitted.
图3是本变形例一中下腔静脉滤器回收装置200的结构示意图。FIG. 3 is a schematic structural diagram of an inferior vena cava filter recovery device 200 in the first modification.
如图3所示，外鞘管6前端弹簧段61设置距离为1公分，尾端的螺旋接口62为Y阀三通结构，螺旋接口62的一侧设有注液接口，用于经注液接口注液进行造影，外鞘管内腔构成注液的流动通道，采用此结构也可方便在滤器回收入鞘管准备将滤器取出体外而又需要临时保留鞘管时从衔接处断开。As shown in Figure 3, the spring section 61 at the front end of the outer sheath tube 6 is set at a distance of 1 cm, and the helical interface 62 at the tail end is a Y valve three-way structure, and one side of the helical interface 62 is provided with a liquid injection interface for the injection interface Inject liquid for radiography, and the inner cavity of the outer sheath tube forms the flow channel for injection liquid. This structure can also facilitate disconnection from the joint when the filter is retracted into the sheath tube to prepare to take the filter out of the body and the sheath tube needs to be temporarily retained.
实施例的作用与效果Function and effect of embodiment
根据本实施例所涉及的下腔静脉滤器回收装置，因为采用导丝圈套技术，所以，本实施例的下腔静脉滤器回收装置在整个回收过程可实现准确、安全操作，并可快速准确回收地滤器，缩短了手术时间，减少血管曝露在射线中的时间，进而减少对血管内壁可能造成损伤，能极大减轻病人痛苦。另外，本实施例的下腔静脉滤器回收装置简单方便，且结构设计合理，成本较之现有的单导丝回收装置有所下降。再者，因为本回收装置采用先包裹后回收的方式，回收顺畅，较直接回撤滤器的回收方式相比，降低了滤器断裂、或损伤血管的风险。According to the inferior vena cava filter recovery device involved in this embodiment, because the guide wire snare technology is adopted, the inferior vena cava filter recovery device of this embodiment can realize accurate and safe operation during the entire recovery process, and can quickly and accurately recover The filter shortens the operation time, reduces the time that the blood vessels are exposed to rays, and thus reduces the possible damage to the inner wall of the blood vessels, which can greatly relieve the pain of the patient. In addition, the inferior vena cava filter recovery device of this embodiment is simple and convenient, and has a reasonable structural design, and the cost is lower than that of the existing single guide wire recovery device. Furthermore, because the recovery device adopts the method of wrapping first and then recovering, the recovery is smooth, and compared with the recovery method of directly withdrawing the filter, the risk of filter breakage or blood vessel damage is reduced.
以上实施例仅为本实用新型构思下的基本说明，不对本实用新型进行限制。而依据本实用新型的技术方案所作的任何等效变换，均属于本实用新型的保护范围。The above embodiments are only basic illustrations under the conception of the utility model, and do not limit the utility model. Any equivalent transformation made according to the technical solution of the utility model belongs to the protection scope of the utility model.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521036249.4UCN205215446U (en) | 2015-12-14 | 2015-12-14 | Inferior vena cava filter recovery device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521036249.4UCN205215446U (en) | 2015-12-14 | 2015-12-14 | Inferior vena cava filter recovery device |
| Publication Number | Publication Date |
|---|---|
| CN205215446Utrue CN205215446U (en) | 2016-05-11 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521036249.4UExpired - Fee RelatedCN205215446U (en) | 2015-12-14 | 2015-12-14 | Inferior vena cava filter recovery device |
| Country | Link |
|---|---|
| CN (1) | CN205215446U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109771087A (en)* | 2017-11-10 | 2019-05-21 | 上海微创心脉医疗科技股份有限公司 | A kind of recyclable device |
| CN115670738A (en)* | 2022-12-28 | 2023-02-03 | 北京华脉泰科医疗器械股份有限公司 | Thrombolytic catheter filter and thrombolytic filter combination kit |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109771087A (en)* | 2017-11-10 | 2019-05-21 | 上海微创心脉医疗科技股份有限公司 | A kind of recyclable device |
| CN109771087B (en)* | 2017-11-10 | 2024-04-05 | 上海蓝脉医疗科技有限公司 | Recovery device |
| CN115670738A (en)* | 2022-12-28 | 2023-02-03 | 北京华脉泰科医疗器械股份有限公司 | Thrombolytic catheter filter and thrombolytic filter combination kit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20160511 Termination date:20201214 | |
| CF01 | Termination of patent right due to non-payment of annual fee |