专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5836957A Large volume atherectomy device 失效
标题翻译：大体积粥样斑块切除装置
公开(公告)号：US5836957A
公开(公告)日：1998-11-17
申请号：US807822
申请日：1997-02-26
申请人： Grace Y. Schulz , Gerri Chatelain , Mark E. Deem , Ferolyn T. Powell
发明人： Grace Y. Schulz , Gerri Chatelain , Mark E. Deem , Ferolyn T. Powell
IPC分类号： A61B17/22 , A61M29/02
CPC分类号： A61B17/320783 , A61B2017/22052 , A61B2017/22055 , A61B2017/22069 , A61M2025/1097
摘要： A side-cutting atherectomy catheter with a housing containing a tissue-removal means, a window on one side, and a large volume inflatable support on the opposite side. The large volume inflatable support has a maximum diameter larger than the diameter of the cutter housing, generating a greater degree of contact with a blood vessel's interior diameter than conventional balloon-housing configurations. This feature stabilizes the cutter housing and improves tissue-removal during the atherectomy procedure. Large volume inflatable supports have a maximum inflated diameter at least 1.1 times, and preferably 1.35 times, greater than the diameter of the housing. The supports may be formed from either elastic or inelastic materials. When formed from inelastic materials, the supports have slack material when uninflated which can extend into and become entangled with the cutter window. To prevent this problem, the large volume inflatable support is constrained when uninflated. The means for constraining the support generally comprises balloon structures, housing structures, or storage or shielding features. In a preferred embodiment, the large volume inflatable support comprises a balloon formed with a plurality of preferential longitudinal folds. When deflated, the folds cause the balloon to form an overlapping flap of material which constrains the slack balloon material from extending around the housing and becoming entangled in the cutter window.
摘要翻译：一种具有壳体的侧切性粥样斑块切除术导管，其包含组织移除装置，一侧上的窗口和相对侧上的大体积可充气支撑件。大体积的可充气支撑件的最大直径大于切割器壳体的直径，与常规球囊壳体构造相比，产生与血管内径更大程度的接触。该功能使切割器壳体稳定，并且可以改善粥样斑块切除术过程中的组织去除。大容积充气支撑件的最大充气直径比壳体的直径大至少1.1倍，优选为1.35倍。支撑件可以由弹性材料或非弹性材料形成。当由非弹性材料形成时，当未膨胀时，支撑件具有松弛的材料，其可以延伸到切割窗口并与切割窗口缠结。为了防止这个问题，当未充气时，大体积的充气支撑被约束。用于约束支撑件的装置通常包括球囊结构，壳体结构或存储或屏蔽特征。在优选实施例中，大体积可充气支撑件包括形成有多个优先纵向折叠的气囊。当放气时，褶皱导致气囊形成重叠的材料折片，其限制松弛球囊材料围绕壳体延伸并且缠结在切割窗口中。

IPRDB

热门服务

关于我们

友情链接

联系方式