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    • 2. 发明授权
    • Expandable ablation burr
    • 可扩展消融毛刺
    • US06685718B1
    • 2004-02-03
    • US09629771
    • 2000-07-31
    • Mark H. WyzgalaEric B. HamiltonThomas J. HiblarLixiao WangJohn J. ChenIrina NazarovaNancy L. HaigSheng-Ping Zhong
    • Mark H. WyzgalaEric B. HamiltonThomas J. HiblarLixiao WangJohn J. ChenIrina NazarovaNancy L. HaigSheng-Ping Zhong
    • A61B1732
    • A61B17/320725A61B17/320758A61B2017/00557A61B2017/00867A61B2017/320004A61B2017/320733
    • An atherectomy burr has an operating diameter that is larger than the diameter of a catheter in which the burr is routed. The burr may include a polymeric balloon that is coated with an abrasive and that expands when the burr is rotated. When the burr is rotated, the polymeric tube expands by centrifugal force. The maximum expansion of the burr is controlled by an expansion mechanism. Various mechanisms are disclosed for controlling the maximum diameter of the burr thus preventing the burr from over expanding. In addition, the present invention includes a system for preventing the loose ablated particulate from reembolizing in the distal vasculature. The system includes an ablation burr that has abrasive disposed on the proximal end that is pulled back toward the guide catheter to ablate the lesion. The burr creates a seal when expanded to block the ablated particulate so that the aspiration system can remove the particulate from the patient vessel or stent. Alternatively, the burr system may include a self expanding seal that is deployed out of the aspiration sheath so that a slight vacuum can remove the large loose particulate form, the patient's vessel or stent.
    • 粥样斑块切除术毛刺的操作直径大于其中布置毛刺的导管的直径。 毛刺可以包括涂覆有磨料的聚合物气球,并且当毛刺旋转时膨胀。 当毛刺旋转时,聚合物管通过离心力膨胀。 毛刺的最大膨胀由膨胀机构控制。 公开了用于控制毛刺的最大直径的各种机构,从而防止毛刺过度膨胀。 此外,本发明还包括一种用于防止松散的消融颗粒在远端脉管系统中再栓塞的系统。 该系统包括消融毛刺,其具有设置在近端上的磨料,其被拉回导向导管以烧蚀病变。 当膨胀时,毛刺产生密封以阻挡消融的颗粒,使得吸气系统可以从患者的血管或支架中移除颗粒。 或者,毛刺系统可以包括从抽吸鞘部署出来的自膨胀密封,使得轻微的真空可以从患者的血管或支架中移除大的松散颗粒。