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    • 4. 发明申请
    • METHOD FOR DETECTING SEPARATION OF A VASOOCCLUSION DEVICE
    • 检测血管分离装置分离的方法
    • WO1995023558A1
    • 1995-09-08
    • PCT/US1995002635
    • 1995-03-02
    • TARGET THERAPEUTICS, INC.SCHELDRUP, Ronald, W.SCHALLER, Laurent, B.
    • TARGET THERAPEUTICS, INC.
    • A61B17/38
    • A61B17/12022A61B17/12113A61B17/12145A61B18/1206A61B2017/00026A61B2017/00123A61B2017/12063
    • This invention is a method for ensuring for endovascular occlusion, aneurysms, vascular malformations, and arteriovenous fistulas. In particular, it deals with a method to predictably determine the instant of electrolytic detachment of an embolic device (104) which is introduced to and is intended to remain at the desired thrombus formation site. The invention further includes a method for delivering an embolic device (104) and detecting its electrolytic separation. According to the present invention, DC power with AC superposition (170) is delivered to the sacrificial link (106) that couples a delivery member (e.g., a guide wire) to an occlusion device. The impedance (as measured by the amplitude of the superposed AC) is monitored. When a predetermined change in that impedance (or amplitude) occurs, which indicates coil detachment, the DC power is interrupted to minimize or avoid further electrolysis.
    • 本发明是确保血管内闭塞,动脉瘤,血管畸形和动静脉瘘的方法。 特别地,它涉及一种可预测地确定栓塞装置(104)的电解脱离时刻的方法,所述栓塞装置(104)被引入并旨在保留在期望的血栓形成部位。 本发明还包括用于输送栓塞装置(104)并检测其电解分离的方法。 根据本发明,具有AC叠加(170)的DC电力被传送到将传送构件(例如导丝)耦合到遮挡装置的牺牲连接件(106)。 监测阻抗(由叠加的AC的幅度测量)。 当发生该阻抗(或振幅)的预定变化,其指示线圈脱离时,直流功率被中断以最小化或避免进一步的电解。