CN106039526A - 一种经桡动脉脑血管介入诊疗导管系统 - Google Patents
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Abstract
一种经桡动脉脑血管介入诊疗导管系统，包括一根内部导管和一根外部导管，内部导管和外部导管同轴使用且紧密配合，内部导管为猪尾形结构，一端为手柄端Ⅰ，远离手柄端Ⅰ的头端Ⅰ呈自由弯曲结构；外部导管一端为手柄端Ⅱ，远离手柄端Ⅱ的头端Ⅱ为柔性软管，且头端Ⅱ与竖直方向的夹角在20度至40度之间。本发明为内外双导管组成，内部导管超选血管开口，外部导管跟进.两根导管同轴，相互配合使用；外部导管头端较软，后部为直型，便于跟进超选二级分支血管；超选成功后内部导管可起到稳定系统，增强系统支持力的作用，便于导管跟进；同轴结构可避免外部导管在血管转弯处对血管壁产生切割损伤血管。
Description
技术领域
本发明涉及医疗器械技术领域，具体涉及一种经桡动脉脑血管介入诊疗导管系统。
背景技术
全脑血管造影是诊断脑血管病的“金标准”，经股动脉是常规入路，而经股动脉穿刺进行介入治疗的穿刺点并发症发生率为2％～10％，常见的并发症包括穿刺点血肿、皮下或腹膜后出血、假性动脉瘤、动静脉瘘等。桡动脉位置浅表、内径细，穿刺术后容易找准动脉破口压迫止血。对于神经介入患者行股动脉穿刺进行介入治疗后多需进行抗凝、抗血小板等治疗，使穿刺后穿刺点出血风险明显升高，穿刺部位出血亦是常见并发症。多项研究证实经桡动脉可以明显减少穿刺点并发症。穿刺点出血并发症率仅为0.4％，需要外科手术干预的穿刺点出血并发症率低至0.06％。经桡动脉入路介入治疗后患者无需严格卧床制动，舒适度较高，一项关于冠状动脉介入治疗后生活质量评分的研究表明，术后1 d和1周TRA组患者的健康状况调查问卷(SF-36)平均得分均高于TFA组患者，而且患者也有极强的意愿选择TRA。患者术后住院时间较TFA患者短。住院费用较低。
近年来国内外许多中心探索经桡动脉行脑血管造影，少数中心进行经桡动脉进行脑血管介入治疗手术，但是使用的导管多使用西蒙导管，VTK导管等，需要在主动脉弓内旋转成攀或主动脉瓣成攀，然后提拉导管超选一级分支血管。
西蒙导管成形及超选过程复杂、费时、费力，对主动脉弓内骚扰较大，易出现并发症。且反弯导管跟进性较差，常常出现超选二级分支血管困难。目前尚无一种经桡动脉入路脑血管诊疗手术，操作简单，实用的专用导管。
发明内容
本发明要解决的技术问题是现有西蒙导管成形及超选过程复杂、费时、费力，对主动脉弓内骚扰较大、跟进性较差，常常出现超选二级分支血管困难，为解决上述问题，提供一种经桡动脉脑血管介入诊疗导管系统。
本发明的目的是以下述方式实现的：
一种经桡动脉脑血管介入诊疗导管系统，包括一根内部导管和一根外部导管，内部导管和外部导管同轴使用且紧密配合，内部导管一端为手柄端Ⅰ，远离手柄端Ⅰ的头端Ⅰ呈自由弯曲的猪尾巴结构；外部导管一端为手柄端Ⅱ，远离手柄端Ⅱ的头端Ⅱ为柔性软管，且头端Ⅱ与竖直方向的夹角在20度至40度之间。
所述头端Ⅰ弯曲的直径为0.5cm~4cm之间。
所述头端Ⅱ与竖直方向的夹角为30度。
所述内部导管长度比外部导管长度长15-30cm。
相对于现有技术，本发明提出的经桡动脉脑血管介入诊疗导管系统，具有以下优点：
1）现有的西蒙导管等均为具有一定形状的导管，导管形状不能调节，此系统具体可调节头端，角度更灵活；
2）现有的西蒙导管均为单一导管，本系统为内外双导管组成，内部导管超选血管开口，外部导管跟进.两根导管同轴，相互配合使用。
3）现有脑血管造影导管内径较小仅能进行脑血管造影，不能进行脑血管介入手术操作，如需要进行介入手术时需利用交换技术，把指引导管引入目标血管，本系统具有脑血管造影及脑血管介入手术多重用途，外部导管内腔较大，相当于指引导管，导管到位无需进行导管交换，可直接进行脑血管介入手术操作，缩短手术时间、降低手术风险。
4）本发明内部导管头端弯曲直径较小，可在锁骨下动脉，无名动脉等快速成形，无需主动脉瓣处进行导管成攀，减少导管于主动脉弓内操作；通过调节系统头端导管的弯曲角度可快捷超选多种角度的血管开口；
5）现有西蒙导管等，头端预成形弯曲角度较大，较硬，进入二级分支血管困难，本发明外部导管头端较软，后部为直型，便于跟进超选二级分支血管；超选成功后内部导管可起到稳定系统，增强系统支持力的作用，便于导管跟进；同轴结构可避免外部导管在血管转弯处对血管壁产生切割损伤血管。
附图说明
图1是本发明的外部导管的结构示意图。
图2是本发明的内部导管的结构示意图。
图3至图5是调节本发明的内外两根导管的相对位置时的结构示意图。
其中，附图标记说明如下：
1、外部导管；2、内部导管。
具体实施方式
如图1和图2所示，该经桡动脉脑血管介入诊疗导管系统由内外两根导管组成，内部导管2和外部导管1同轴使用且紧密配合，内部导管2的外径略小于外部导管1的内径，内部导管2为猪尾结构（即J形结构），一端为手柄端Ⅰ，远离手柄端Ⅰ的头端Ⅰ呈自由弯曲的猪尾巴结构；外部导管1一端为手柄端Ⅱ，远离手柄端Ⅱ的头端Ⅱ为柔性软管。内部导管2头端Ⅰ猪尾状弯曲的直径为0.5cm~4cm之间，如直径为1cm、2cm或3cm。外部导管1头端Ⅱ与竖直方向的夹角为20度至40度之间，优选地，头端Ⅱ与竖直方向的夹角为30度。
两根导管同轴使用，如图3至图5所示，可通过控制两根导管相对位置调节系统头端内部导管的角度，便于超选不同角度的血管开口，内部导管超选成功后，导丝超选入靶血管，然后固定内部导管，推进外部导管，内部导管起到稳定系统的作用，同时外部导管1头端为软头，便于跟进超选二级分支血管。内部导管长度较外部导管长度长15-30cm，优选地，长20cm，当执行介入操作时，外部导管尾端及内部导管尾端接“Y”阀，给予持续加压液体滴注冲洗，避免出现导管内血栓形成。进行血管造影时可保留内部导管，通过内部导管注射对比剂，无需撤出内部导管，便于连续超选多根血管；脑血管介入手术时，外部导管到位后，撤出内部导管，单纯利用外部导管较大内腔进行手术。
以上所述的仅是本发明的优选实施方式，应当指出，对于本领域的技术人员来说，在不脱离本发明整体构思前提下，还可以作出若干改变和改进，这些也应该视为本发明的保护范围。
Claims (4)
1.一种经桡动脉脑血管介入诊疗导管系统，其特征在于：包括一根内部导管和一根外部导管，内部导管和外部导管同轴使用且紧密配合，内部导管为猪尾形结构，一端为手柄端Ⅰ，远离手柄端Ⅰ的头端Ⅰ呈自由弯曲结构；外部导管一端为手柄端Ⅱ，远离手柄端Ⅱ的头端Ⅱ为柔性软管，且头端Ⅱ与竖直方向的夹角在20度至40度之间。
2.根据权利要求1 所述的经桡动脉脑血管介入诊疗导管系统，其特征在于：所述头端Ⅰ猪尾状弯曲的直径为0.5cm~4cm之间。
3.根据权利要求1所述的经桡动脉脑血管介入诊疗导管系统，其特征在于：所述头端Ⅱ与竖直方向的夹角为30度。
4.根据权利要求1所述的经桡动脉脑血管介入诊疗导管系统，其特征在于：所述内部导管长度比外部导管长度长15-30cm。
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108295357A (zh) * | 2018-03-27 | 2018-07-20 | 中南大学湘雅医院 | 造影导管 |
| CN109529172A (zh) * | 2017-09-21 | 2019-03-29 | 泰尔茂株式会社 | 导管及导管组装体 |
| CN110585560A (zh) * | 2019-10-31 | 2019-12-20 | 上海加奇生物科技苏州有限公司 | 一种专用于保护介入类导管头端形状的保护管 |
| CN112423824A (zh) * | 2018-05-17 | 2021-02-26 | 92号医疗公司 | 抽吸导管系统和使用方法 |
| CN115337525A (zh) * | 2022-08-25 | 2022-11-15 | 中国人民解放军东部战区总医院 | 一种经桡长度可调节脑血管造影导管及造影方法 |
| US11534575B2 (en) | 2013-12-23 | 2022-12-27 | Route 92 Medical, Inc. | Methods and systems for treatment of acute ischemic stroke |
| US11576691B2 (en) | 2015-02-04 | 2023-02-14 | Route 92 Medical, Inc. | Aspiration catheter systems and methods of use |
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