PERICARDIAL CATHETER WITH TEMPERATURE SENSING ARRAY

To provide a catheter adapted for use in the pericardial sac for sensing temperature of an ablation site and surrounding heart tissue within one of the ventricles and atria of the heart via proximity with the epicardium in the pericardial sac.SOLUTION: The catheter comprises an elongated catheter bo...

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Hauptverfasser: MARK T STANLEY, KELVIN M CHUU, JOHN H ASHTON
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide a catheter adapted for use in the pericardial sac for sensing temperature of an ablation site and surrounding heart tissue within one of the ventricles and atria of the heart via proximity with the epicardium in the pericardial sac.SOLUTION: The catheter comprises an elongated catheter body, and a temperature sensing array distal to the catheter body. The temperature sensing array comprises a 2-D body, and comprises at least one temperature sensing member adapted for use in the pericardial sac. The 2-D body comprises a top member 43, a bottom member 44, and tubing 40 positioned between the top member 43 and the bottom member 44. The temperature sensing members comprise thermocouple wire pairs 28, 29 extending between the top member 43 and the bottom member 44, and has temperature sensing locations on the 2-D body. The thermocouple wire pairs 28, 29 extend through the tubing 40 and exit the tubing 40 via holes 56 formed in the tubing 40.SELECTED DRAWING: Figure 6 【課題】心膜嚢内の心外膜との近接によって心臓の心室又は心房の一方の内部でアブレーション部位の温度を感知し、かつ心臓組織を包囲して心膜嚢内で使用されるように適応されたカテーテルを提供する。【解決手段】細長いカテーテル本体と、カテーテル本体の遠位にある温度感知アレイを備える。温度感知アレイは、2次元体を備え、心膜で使用されるように適応された少なくとも1つの温度感知部材を備える。2次元体は、頂部部材43と、底部部材44と、頂部部材43と底部部材44との間に位置付けられたチューブ材40とを備える。温度感知部材は、頂部部材43と底部部材44との間に延在する熱電対ワイヤ対28,29を備え、2次元体上に温度感知位置を有する。熱電対ワイヤ対28,29が、チューブ材40を通って延在し、チューブ材40に形成された穴56を通ってチューブ材40から抜け出る。【選択図】図6