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    • 7. 发明授权
    • Multi-seal trocar system
    • 多密封套管针系统
    • US07438702B2
    • 2008-10-21
    • US10495671
    • 2001-11-13
    • Charles C. HartJohn R. BrustadNabil HilalSaid S. Hilal
    • Charles C. HartJohn R. BrustadNabil HilalSaid S. Hilal
    • A61M5/178A61B17/34
    • A61B17/3462A61B2017/3464
    • A multi-seal trocar system (10) includes a plurality of co-axial sealing elements (30 60,80) adapted for forming a seal with either a large or small instrument. Small and large scaling elements (45,62) are disposed in an in-line arrangement such that a single port is provided for instrument insertion. A zero seal (80) is disposed distally of the sealing elements to seal a working channel of the system and to prevent backflow when no instruments are inserted The small sealing element (45) is configured such that insertion of a large instrument automatically moves the small sealing element (45) out of its path, thereby avoiding contact with the large instrument.
    • 多密封套管针系统(10)包括适于与大型或小型仪器形成密封件的多个同轴密封元件(30,60,80)。 小型和大型缩放元件(45,62)以串联排列设置,使得提供用于仪器插入的单个端口。 零密封件(80)被设置在密封元件的远侧以密封系统的工作通道,并且当没有仪器被插入时防止回流。小密封元件(45)构造成使得大型仪器的插入自动地移动小型 密封元件(45)脱离其路径,从而避免与大型仪器接触。