PROBLEM TO BE SOLVED: To provide a high-frequency power supply device capable of acquiring intracardiac potential reduced in noise even during the passage of a high-frequency electric current.SOLUTION: A high-frequency power supply device is constituted so as to let the high-frequency electric current flow across the leading end electrode 310 of an ablation catheter 300 and a counter electrode 400, and includes a first transformer 25 for transforming the AC voltage from a power supply plug, a power supply part 20 for applying the transformed AC electric current to the respective constitutional pats of this device, an operational processing part 10 for forming a high-frequency signal and an output indication signal, an amplification part 30 for amplifying a high-frequency signal to form a high-frequency electric current, an output part 60 for outputting the high-frequency electric current to the ablation catheter 300 on the basis of the output indication signal from the operational processing part 10, and the second transformer 65 mounted on the output part 60 in order to cut the noise mixed with the high-frequency electric current formed in the amplification part 30. The mounting angle of the first transformer 25 is 0° or 90° and the mounting angle of the second transformer 65 is 45°±10°.COPYRIGHT: (C)2013,JPO&INPIT【課題】高周波電流の通電中であっても、ノイズの少ない心内電位を取得できる高周波電源装置を提供すること。【解決手段】アブレーションカテーテル300の先端電極310と対極板400との間に高周波電流を流す電源装置であり、電源プラグからの交流電圧を変圧する第1トランス25と、変圧された交流電圧を装置の各構成部に印加する電源部20と、高周波信号および出力指示信号を形成する演算処理部10と、高周波信号を増幅して高周波電流を形成する増幅部30と、演算処理部10からの出力指示信号に基いてアブレーションカテーテル300に高周波電流を出力する出力部60と、増幅部30で形成された高周波電流に混入されているノイズをカットするために出力部60に実装された第2トランス65とを備え、第1トランス25の実装角度が0°または90°、第2トランス65の実装角度が45°±10°である。【選択図】 図2
