发明名称 冷凍アブレーションカテーテルアセンブリおよび冷凍アブレーションシステム
摘要 <p>A cryoablation catheter assembly includes a catheter having a coolant outtake region and receives a guide tube and a coolant transfer tube. The coolant transfer tube receives and transfers coolant from a coolant source to an expansion element coupled to a distal portion of the catheter. The expansion element includes an outer layer disposed over an inner layer such that the expansion element defines an inter-expansion-element space between the inner layer and the outer layer and an intra-expansion-element space within the inner layer. The intra-expansion-element space is in fluid communication with the coolant outtake region and the coolant transfer tube. The inter-expansion-element space is in fluid communication with a fluid pathway that transfers fluids to a fluid-drawing source. A pressure regulation system is disposed along the fluid pathway and passively regulates the pressure in the inter-expansion-element space using at least one check valve.</p>
申请公布号 JP5667185(B2) 申请公布日期 2015.02.12
申请号 JP20120523101 申请日期 2010.07.30
申请人 发明人
分类号 A61B18/02 主分类号 A61B18/02
代理机构 代理人
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