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    • 1. 发明申请
    • WIRE GUIDE WITH CANNULA
    • 电线指南与肛门
    • US20110160680A1
    • 2011-06-30
    • US12648724
    • 2009-12-29
    • Logan M. CageAaron WeeksThomas A. Kay, JR.James C. Elsesser
    • Logan M. CageAaron WeeksThomas A. Kay, JR.James C. Elsesser
    • A61M25/09A61L15/50B23P17/04
    • A61M25/09033A61M2025/0915Y10T29/49826
    • The present invention generally relates to a medical surgical device and specifically a wire guide for percutaneous placement within a body lumen. The wire guide includes an elongated mandrel having sufficient flexibility and kink resistance and a cannula having a stiffness greater than the mandrel stiffness for sufficient pushability. The mandrel extends through the cannula and has a portion extending distal thereto to form a distal tip of the wire guide. The wire guide can further include a slotted cannula to improve the flexibility of the wire guide at the proximal portion of the wire guide. The slots can be arranged in various patterns for increased flexibility along the longitudinal length of the cannula, as well as increased circumferential flexibility along the wire guide. The mandrel may also have a proximally tapered portion to improve the flexibility of the wire guide at the proximal portion of the wire guide.
    • 本发明总体上涉及一种医疗手术装置,具体地说涉及一种用于在体腔内经皮放置的导丝器。 线引导件包括具有足够的柔性和扭结阻力的细长心轴以及具有大于心轴刚度的刚度的套管以实现足够的可推动性。 心轴延伸穿过套管并且具有在其远端延伸以形成线引导件的远侧末端的部分。 电线引导件还可以包括开槽插管,以改善导线器在线导向件的近端部分处的柔性。 狭槽可以以各种图案布置,以沿着插管的纵向长度增加柔性,以及沿着导丝器增加周向柔性。 心轴还可以具有近端锥形部分,以改善导线器在线导向器的近端部分处的柔性。