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Invention Grant
CN105030325B 具有专用流体路径和针定心插入件的消融导管 有权

具有专用流体路径和针定心插入件的消融导管
Abstract:
本发明题为具有专用流体路径和针定心插入件的消融导管。本发明公开了一种冲洗式针电极消融导管，该导管具有配备尖端电极的远侧尖端节段、能够相对于导管纵向运动的针电极组件、以及位于尖端电极中的通道中的针定心插入件。该组件具有近侧管材和远侧针电极，并且插入件将针电极支撑在通道中距尖端电极的预先确定的间隔距离处，同时使得冲洗能够围绕针电极周向地流动穿过通道并且在针电极的远侧端部处流出。该导管还提供第一专用流体路径和第二专用流体路径，该第一专用流体路径穿过组件并且在针电极的远侧端部处退出，该第二专用流体路径用于将流体供应到针电极中的通道，其中第二路径由导向管限定并且由柱塞构件引导。
Abstract(English):

An irrigated needle electrode ablation catheter has a distal tip section with a tip electrode, a needle electrode assembly longitudinal movable relative to the catheter, and a needle centering insert in a channel in the tip electrode. The assembly has a proximal tubing and a distal needle electrode, and the insert supports the needle electrode in the channel at a predetermined separation distance from the tip electrode while enabling irrigation to flow circumferentially around the needle electrode through the channel and exit at the distal end of the tip electrode. The catheter also provides a first dedicated fluid pathway through the assembly and exits at the distal end of the needle electrode, and a second dedicated fluid pathway to supply fluid to the channel in the tip electrode, wherein the second pathway is defined by a guide tube and directed by a plunger member.

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