Cryosurgical probe with bellows shaft
    13.
    发明授权
    Cryosurgical probe with bellows shaft 有权
    带波纹管轴的冷冻探头

    公开(公告)号:US06767346B2

    公开(公告)日:2004-07-27

    申请号:US10057033

    申请日:2002-01-23

    IPC分类号: A61B1736

    摘要: The malleable cryosurgical probe includes a cryostat assembly and a cryoprobe assembly. The cryostat assembly includes an elongated shaft assembly having a bellows portion thereof and a closed distal end. The shaft assembly includes at least one freezing portion comprising the bellows portion, at least one thermally insulated portion and a thermally insulating element positioned about the thermally insulated portion. A cryostat is operably associated with the elongated shaft assembly. It includes a cryostat inlet for receiving gas entering the cryostat, a cryostat outlet and a heat exchanger positioned between the cryostat outlet and the cryostat inlet. The heat exchanger receives gas from the cryostat inlet and provides heat transfer between gas flowing within the cryostat and fluid exterior thereto. At least one Joule-Thomson nozzle is in fluid communication with the cryostat outlet. The at least one Joule-Thomson nozzle expands gas expelled therefrom. The expanded cold fluid communicates with the freezing portion to provide cooling thereof. The cryoprobe assembly includes a handle assembly for supporting the cryostat assembly and a fluid supply line assembly connectable to a fluid source at one end and to the cryostat inlet at a second end. The heat exchanger is positioned at a location longitudinally spaced from the freezing portion(s).

    摘要翻译: 可延展的冷冻手术探头包括低温恒温器组件和冷冻探针组件。 低温恒温器组件包括细长轴组件,其具有波纹部分和封闭的远端。 轴组件包括至少一个包括波纹管部分的冷冻部分,至少一个热绝缘部分和围绕隔热部分定位的隔热元件。 低温恒温器与细长轴组件可操作地相关联。 其包括用于接收进入低温恒温器的气体的低温恒温器入口,低温恒温器出口和位于低温恒温器出口和低温恒温器入口之间的热交换器。 热交换器从低温恒温器入口接收气体,并在低温恒温器内流动的气体和外部流体之间提供热传递。 至少一个焦耳汤姆逊喷嘴与低温恒温器出口流体连通。 至少一个焦耳汤姆逊喷嘴扩大从其排出的气体。 膨胀的冷流体与冷冻部分连通以提供冷却。 冷冻探头组件包括用于支撑低温恒温器组件的手柄组件和可在一端连接到流体源的流体供应管线组件和在第二端处连接到低温恒温器入口的流体供应管线组件。 热交换器定位在与冷冻部分纵向间隔开的位置处。